Provided is a variable-capacity compressor control valve where a decrease in the sealability or the operability due to shaft misalignment can be effectively suppressed without requiring high dimensional accuracy. The dimensions and the shape of each part are designed such that when the sub valve element closes the in-valve release passage, the tapered portion (sub valve element portion) provided at the lower end portion of the sub valve element enters the release through-hole of the in-valve release passage, and the sub valve element is thus aligned with the main valve element by the tapered portion.

Provided is a variable-capacity compressor control valve where the size of a plunger can be reduced, the machining and assembly process can be simplified, weight reduction can be achieved, and cost reduction can also be achieved, for example. The plunger has a slit through which a valve element is assembled to the plunger by being inserted from a lateral side. The slit serves as a flow path for releasing the pressure Pc in the crank chamber to the suction chamber of the compressor from the Ps inlet/outlet port when the sub valve element has opened the in-valve release passage.

A valve for a reciprocating pump includes a housing, a first chamber, a second chamber, a first valve element, and a second valve element. The housing includes an inlet and an outlet. The first and second chambers are within the housing. The first chamber includes a first valve seat and is fluidly connected to the inlet. The second chamber includes a second valve seat and is fluidly connected to the outlet. The first valve element is disposed in the first chamber and includes a spring-loaded check valve element. The second valve element is disposed in the second chamber and includes a buoyant material.

A cabin air compressor assembly includes a cabin air compressor, and a cabin air compressor motor operably connected to the cabin air compressor. The cabin air compressor motor includes a rotor and a stator having a plurality of end windings. A cabin air compressor housing includes at least one cooling airflow hole formed therein. A motor cooling flow is movable across a portion of the cabin air compressor motor to cool the stator and the end windings. A duct extends from the cabin air compressor housing to an adjacent end winding such that a cooling outlet flow provided via the at least one cooling air flow hole is arranged in fluid communication with the end winding.

A system and method of producing fluid from a wellbore by pressurizing the fluid and then directing the pressurized fluid to a centrifugal pump. Pressurizing the fluid compresses gas or vapor within the fluid, thereby decreasing the volume ratio of the gas or vapor within the fluid, which in turn increases operating efficiency of the centrifugal pump. A positive displacement pump, such as a gerotor pump, is used for pressurizing the fluid prior to sending it to the centrifugal pump.

A control valve for an air conditioning compressor is disclosed. The control valve comprises a control piston, an electric motor, a sensor, and a control unit. The control piston connects a refrigerant flow between a high-pressure area and a crankcase pressure area of the air conditioning compressor in a first position. The control piston further connects the refrigerant flow between the crankcase pressure area and a low-pressure area of the air conditioning compressor in a second position. The electric motor moves the control piston between the first position and the second position. The sensor determines the position of the control piston. The control unit is connected to the sensor and the electric motor. The control unit controls the electric motor to move the control piston and control the refrigerant flow based on the position of the control piston determined by the sensor.

The compressor includes a bearing hub, defining a radial bearing having a first and a second end portion and supporting a crankshaft having an eccentric end portion supporting the larger eye of a connecting rod coupled to the piston, for example, by a smaller eye mounted around a piston pin. The second end portion and, optionally, the first end portion of the bearing hub and the larger and smaller eyes of the connecting rod are internally provided with bushings. End portions of the bearing hub and of the larger and smaller eyes may have their structure resistant to the pressing of a confronting compressor component supported on said end portions, or further present a terminal portion elastically deformable together with a confronting terminal portion of the associated bushing.

A reciprocating jetting water pump primarily for use on a vacuum truck is disclosed. The jetting water pump includes a pair of reciprocating pistons that are each movable within an outer cylinder mounted to a center block. Each of the outer cylinders is mounted to the center block by a plurality of tie-rod that each extend between the center block and an end plate. An airflow passageway is formed in the center block to vent air trapped within the open interior of the first outer cylinder during reciprocating movement of the piston in the first outer cylinder. A control system mounted to the vacuum truck senses the pressure of water leaving the jetting water pump and controls the supply of pressurized hydraulic fluid to the jetting water pump to maintain the water pressure at an operator selected value.

An aero-engine low pressure pump is provided for supplying fuel at a raised pressure to a high pressure pump. The low pressure pump has a pumping mechanism which raises the pressure of fuel flowing though the mechanism. The low pressure pump further has electrical motor which drives the pumping mechanism. The low pressure pump further has a variable frequency motor drive which supplies electrical power to the electrical motor. The variable frequency motor drive measures the electrical power supplied to the electrical motor. The low pressure pump further has a control unit which compares the measured electrical power to a reference power, and, when the measured electrical power is less than the reference power by a predetermined amount, controls the motor drive to increase the power supplied to the electrical motor thereby increasing the pressure rise produced by the pumping mechanism.

A compressor (10), in particular a compressor for compressing a coolant, including one or more pistons (12), a cylinder block (16), and a compressor housing which at least partially houses the compressor (10), the piston(s) (12) being arranged in corresponding cylinder bores or cylinders (14) arranged at least partially in the cylinder block (16) and/or in the compressor housing so that they can move back and forth. The compressor (10) also includes an impedance tube (36) and an outlet (30) for releasing the coolant from the compressor, (10) in particular an outlet flange (32). Said compressor (10) has an associated high pressure volume (24), for one or more, in particular, for respectively two cylinders (14), and a common high pressure volume (26), in which the individual high pressure volumes (24) join, the common high pressure volume (26) being connected to the outlet (30) and the impedance tube (36) being arranged in the connection between the common high pressure volume (26) and the outlet (30) or the connection is created between the common high pressure volume (26) and the outlet (30). The invention also relates to a corresponding coolant circuit and to a corresponding air-conditioning system.

Integrated processes are provided for syngas refining and bioconversion of syngas to oxygenated organic compound. In the integrated processes ammonia contained in the syngas is recovered and used as a source of nitrogen and water for the fermentation. The integrated processes first remove tars from syngas by scrubbing using a first aqueous medium under conditions that ammonium bicarbonate is unstable. With tars removed, contact between the syngas and a second aqueous medium enables ammonia and carbon dioxide to be removed from the syngas without undue removal of components adverse to the fermentation, processing or oxygenated product such as benzene, toluene, xylene, ethylene, acetylene, and hydrogen cyanide. At least a portion of the second aqueous medium is supplied as a source of water and ammonia for the fermentation.

Reactive diluent fluid (22) is introduced into a stream of synthesis gas (or “syngas”) produced in a heat-generating unit such as a partial oxidation (“POX”) reactor (12) to cool the syngas and form a mixture of cooled syngas and reactive diluent fluid. Carbon dioxide and/or carbon components and/or hydrogen in the mixture of cooled syngas and reactive diluent fluid is reacted (26) with at least a portion of the reactive diluent fluid in the mixture to produce carbon monoxide-enriched and/or solid carbon depleted syngas which is fed into a secondary reformer unit (30) such as an enhanced heat transfer reformer in a heat exchange reformer process. An advantage of the invention is that problems with the mechanical integrity of the secondary unit arising from the high temperature of the syngas from the heat-generating unit are avoided.

A gas separation process that utilizes ejector recycle with a membrane separation step in combination with a second separation step. The second separation step may be a second membrane separation, or may involve a different type of separation process. At least a portion of the non-product (i.e. residue) stream withdrawn from the second separation step is directed back to the ejector to form a processing loop. The ejector drives the gas flow in the loop and recycles the non-product stream to the first separation step.

Provided are apparatus and systems having a poppet valve assembly and swing adsorption separation techniques related thereto. A poppet valve includes a valve body, a plurality of static valves fixedly secured to the valve body and a single dynamic poppet valve having a plurality of openings. The plurality of static valves align and mate with the plurality of openings. The single dynamic poppet valve reciprocates to selectively open and close the plurality of static valves.

The system is provided for continuously separating landfill gas in a raw multi-phase stream coming from a landfill gas collector. The system includes an atmospheric tank and an elongated separator vessel mounted substantially upright above the tank bottom. The elongated separator vessel includes a mid-level inlet that is configured and disposed to be in fluid communication with the landfill gas collector pipe, an upper gas outlet located vertically above the mid-level inlet, and a bottom-opened discharge end that is located vertically below the mid-level inlet. A method of pretreating a raw multi-phase stream captured from a landfill site is also disclosed. The proposed concept provides a relatively simple arrangement that can be made sufficiently rugged to perform a pretreatment of the raw multi-phase stream in a continuous manner and with a very minimal intervention from landfill operators under almost any weather and operating conditions.

A novel crystalline hybrid solid with a mixed organic-inorganic matrix is described which has a three-dimensional structure containing an inorganic framework with metallic centers based on zinc connected together via deprotonated organic ligands constituted by the entity —O2C—C6H2—(O)2—CO2. This novel solid is termed IM-21 and has an X-ray diffraction diagram as given below.

The invention relates to a process and a plant for producing cement clinker, which has a furnace system and has essentially the following process steps:—raw material is preheated in a preheater by means of hot offgases from the furnace system,—dust is removed from the hot offgas downstream of the preheater in a preliminary dust removal apparatus to a residual dust concentration of max. 20 g/standard m3,—the offgas which has been subjected to preliminary dust removal is purified in a selective catalytic flue gas purification plant (selective catalytic reduction, SCR),—at least part of the offgas purified in the flue gas purification plant is conveyed in a bypass around a raw material milling plant to a cooling device and cooled there to temperatures of max. 140° C.,—before the residual dust in the offgas is precipitated in a process filter and—at least part of the residual dust precipitated in the process filter is discharged for removal of mercury.

A process for the reduction of carbon dioxide and carbonyl sulfide from various types of gas emitting sources containing carbon dioxide and/or gas or liquid emitting sources containing carbonyl sulfide, using ion exchange resin.

A process for winning oil from a vapor gas mixture (VGM) containing a plurality of oil fractions obtained by the pyrolysis of a hydrocarbon containing material includes dedusting and cooling the VGM. The dedusted and cooled VGM are fractionated in at least two electrostatic precipitator stages at respective temperatures corresponding to respective boiling points of the oil fractions so as to separate the oil fractions.

A method and apparatus are described for swing adsorption processes. The method includes obtaining different plates, wherein the plates have gaseous openings and a utility fluid opening. Then, the gaseous openings are substantially oriented along a common axis for gaseous openings and the plates are diffusion bonded. Once diffusion bonded, the gaseous openings within the module are wash coated with an adsorbent material.

The present invention relates to a process and apparatus for producing a fluid enriched in carbon dioxide starting from a waste gas from a ferrous metallurgy unit.

A natural gas-containing stream such as biogas from landfills and sewage treatment plants is freed of siloxane contaminants by passing the biogas through a bed containing an adsorbent having a neutral surface, which adsorbs the siloxanes. When the bed of neutral adsorbent is filled to capacity, the adsorbent bed is heated to remove the siloxanes and regenerate the bed. The neutral adsorbent reduces disadvantageous reactions between the adsorbent and siloxane and other impurities in the natural gas-containing stream.

There is provided a process for effecting permeation of at least an operative material component of an operative mixture from a higher pressure space, through a membrane, and into a lower pressure space, wherein the higher pressure space is disposed in mass transfer communication with the lower pressure space through the membrane.

A punching device includes a punching unit that punches a hole in a sheet of paper; a container that receives a chad of paper generated upon punching by the punching unit; a dispersing member that is provided within the container and that is configured to disperse the chad of paper; and a guiding member configured to guide the chad of paper that is generated upon punching by the punching unit and fallen into the container to the dispersing member.

Noodles with hand-made quality consisting of thick and thin portions are processed by introducing a noodle belt between first and second cutting rolls 5 and 6 having first and second cutting blades 3 and 4 each formed by large and small diameter portions 3a, 4a and 3b and 4b, and spacers 7. The cutting rolls are relatively shifted in an axial direction such that the thick portion is formed by opposing large diameter portion and spacer and the thin portion is formed by opposing large diameter portion and small diameter portion.

A simple and compact rotary cutter unit capable of detecting a home position of a rotary cutter, and a printer device having the rotary cutter unit. A radially outwardly extending fin-shaped detected member is arranged on an end portion of the rotating blade opposed to a second gear of the rotating blade. A photosensor is arranged within a main frame of the printer device so that the photosensor may detect the fin-shaped member when the rotating blade is positioned at the home position. The fin-shaped member and the photosensor are not positioned outside relative to both ends of the rotating blade in relation to the direction of the rotational axis of the rotating blade. Therefore, it is not necessary to increase the width of the printer device due to the presence of the fin-shaped member or the photosensor, whereby the printer device may be compactly constituted.

An apparatus having a sample sectioning device including a cutting mechanism that is operable to cut sections from a sample and a sample holder that is operable to hold the sample. The apparatus further includes a drive system coupled with the sample holder to drive movement of the sample holder and a reciprocating member coupled to the drive system to drive vertical movement of the drive system. The reciprocating member to move in a reciprocating manner within an angle of rotation of less than 180 degrees. A surface orientation sensor may further be provided that is operable to sense an orientation of a surface of the sample held by the sample holder.

The invention relates to a metal-cutting machining process for a semi-finished product having a predetermined shape and at least one machining surface which has the steps: applying a protective foil having a predetermined elongation at break to the at least one machining surface with a predetermined adhesive force, placing a metal-cutting tool in a predetermined position above the machining surface, exerting a predetermined mechanical force in a predetermined direction for a predetermined length of time to the tool for carrying out a metal-cutting process on the semi-finished product and lifting the tool from the at least one machining surface after the predetermined length of time. In order to protect the semi-finished products from damage through the machining residues and at the same time not to impair the drilling performance, according to the invention through the adhesion an adhesive force is produced between the protective foil and the machining surface of substantially 10 N/25 mm and a protective foil is used which has an elongation at break of between 80 and 120%.

A strip die is prepared with cutouts according to a pre-determined pattern, e.g., on a cutting table and positioned on a stripping station that has a removal tool to remove waste material. After a sheet of material is cut on the same or another cutting table, the sheet is positioned in the stripping station over the female strip die. The removal tool moves to programmed positions in the stripping station and removes pieces of waste material. The final stripped cut sheet is the brought to the out-stack.

Embodiments herein provide a modified pitch sprocket to provide an orientation of a saw chain link, such as a cutter link or drive link, with respect to the direction of travel of the link, as it traverses the sprocket that is different than the orientation of the link as it traverses a straight portion of the guide bar. In some embodiments, the modified pitch sprocket may orient the cutter link to provide radial extension for a depth gauge of the cutter link relative to a cutting element of the cutter link. This may facilitate shaping of the depth gauge and/or cutting element, such as by a sharpening element, as the cutter link traverses the sprocket.

A sheet post-processing apparatus which is capable of shortening time wasted until actual start of punching and enhancing productivity. A drive unit causes a moving member which has a cam and reciprocates. A punching member is driven by a movement of the cam of the moving member and punches a sheet when the moving member moves forth and moves back. A determination unit determines a type of the sheet. A control unit controls, when a sheet to be punched is to be subjected to a punching process, the drive unit such that the moving member starts moving before conveyance of the sheet to be punched stops, and controls, when the sheet to be punched is to be subjected to the punching process, the drive unit such that timing with which the moving member starts moving is changed based on the determination by the determination unit.

The invention relates to a process for making paper or paper board comprising forming a cellulosic suspension, flocculating the suspension, draining the suspension on a device to form a sheet and then drying the sheet, wherein the suspension is flocculated using a formation improving 3-component flocculation system comprising a) a linear cationic or ampoteric co-polymer of: i) acrylamide, and ii) a substance with formula (I) with a halide as counter-ion; b) at least one water soluble component chosen from the group of anionic polyacrylamide, non-ionic polyacrylamide and polyethyleneoxide; and c) inorganic microparticles, whereby the flocculation system does not contain a wafer-dispersible or branched anionic organic polymer. The invention also relates to use of the flocculation/retention system in the manufacture of paper or paper board, and to paper and paper board thus produced.

Disclosed is a water and oil resistant agent comprising a fluorine-containing copolymer obtained by copolymerizing a (meth)acrylate monomer having a polyfluoroalkyl group having 1 to 6 carbon atoms, the agent being able to afford a superior water and oil resistance to a paper. The invention also discloses a composition comprising the water and oil resistant agent, a process for treating a paper thereby and a treated paper thereby.

The present invention relates to a process for the production of a surface-treated calcium carbonate, the use of this surface-treated calcium carbonate in a process for the control of organic material in an aqueous medium, as well as to a composite of surface-treated calcium carbonate and organic material, such as a composite of surface-treated calcium carbonate and to the use of such a composite.

The invention relates to a device for the hydrolysis of preferably solid organic substrates, in particular of energy crops and plant residues, with a collection vessel (1) for receiving the organic substrates, with a conveying means (4) for transporting the organic substrates into a charging device (7) for the batch-wise charging of a hydrolyzer (10) with the organic substrates, the hydrolyzer (10) being provided on the output with a pressure-release device (12) having a valve-controlled pressure diaphragm (13) and a steam trap (14) arranged upstream of an expander tank (15). According to the invention, the conveying means (4) includes a conveyor worm (4') with a sleeve shaft (25), which is charged with hot steam from the steam trap (14), which is preferably designed as a cyclone, the sleeve shaft (25), in the conveying zone for the organic substrate, having, in a heating zone (18), steam-outlet openings (26) for directly charging the organic substrate with hot steam.

A method of producing a finely fibrous cellulose composite prepreg sheet, sheet or laminate sheet, the method including a mixing an emulsion of a reactive compound with an aqueous suspension containing a finely fibrous cellulose to prepare a mixed liquid dewatering the mixed liquid by filtration on a porous substrate to form a water-containing sheet; and heating and drying the water-containing sheet. A method of producing a finely fibrous cellulose composite sheet, the method including subjecting the finely fibrous cellulose composite prepreg sheet produced by the method described above to a curing treatment.

The invention provides methods and compositions for increasing the strengthening effect of a starch coating on paper. The method involves contacting the starch with a synthetic polymer before the starch is cooked. This changes how the starch gelatinizes and how the polymer gets distributed on the paper resulting in greater paper surface strength.

A method for manufacturing a sheet of paper and/or board having improved retention and drainage properties is provided, according to which, before the formation of the sheet and/or board, at least two retention aids are added to the fibrous suspension. These two retention aids are a main retention aid corresponding to a (co)polymer having a cationic charge density above 2 meq/g, obtained by the Hofmann degradation reaction, and a secondary retention aid corresponding to a water-soluble or water-swellable polymer having an anionic charge density above 0.1 meq/g. The main retention aid is introduced into the fibrous suspension in a proportion of 100 to 800 g/t of dry pulp, and the secondary retention aid is introduced into the fibrous suspension in a proportion of 50 to 800 g/t of dry pulp and has an intrinsic viscosity IV above 3 dl/g.

A process is disclosed for converting biomass to fuels and/or valuable chemicals. The process comprises the steps of a) activating biomass to make it more susceptible to conversion; c) partially converting the biomass to a solubilized material; and d) subjecting the unconverted biomass to a second conversion step. The process optionally comprises a step b) of adding a solvent to the activated biomass. In a preferred embodiment the solubilized biomass obtained in step c) is removed before the unconverted biomass is subjected to step d).

A method is provided for forming a fire resistant cellulose product. A fire-retarding solution and a bonding agent are combined with refined cellulose fibers to form a fiber mixture, and the fire-retarding solution and bonding agent are substantially uniformly distributed with respect to the cellulose fibers within the fiber mixture. The fiber mixture is exposed to an actuating element, wherein the actuating element is configured to actuate the bonding agent so as to facilitate cohesion of the cellulose fibers and form the fiber mixture into a fiber board member, the fiber board member having opposing major surfaces. A cellulose sheet member is engaged with each major surface of the fiber board member, such that each cellulose sheet member substantially covers the respective major surface. An associated apparatus is also provided.

A press felt includes: a base fabric comprising a plurality of repeat units, each of the repeat units comprising a plurality of exterior machine direction (MD) yarns, each of which includes an upper run and a lower run merging with seam loops at each end, a plurality of middle MD yarns positioned between the upper and lower runs of the exterior MD yarns, a plurality of cross machine direction (CMD) yarns interwoven with the exterior MD yarns and the middle MD yarns in a predetermined regular weave pattern, the seam loops defining the longitudinal ends of the press felt; and a batt layer overlying the base fabric.

The invention relates to a method for obtaining cellulose by separating lignin from a biomass comprising lignocellulose in the form of plants or plant parts, wherein the biomass comprising lignocellulose is solubilized in a boiler in an alkaline medium comprising alkanol amine, and dissolved lignin is separated from the resulting raw cellulose. Said method is characterized in that the biomass comprising lignocellulose is not from a wood source, and is solubilized at a temperature of less than approximately 170° C. in a solubilizing agent based on alkanol amine and water, wherein the weight ratio of alkanol amine to water is set to 80:20 to 20:80, and raw cellulose thus produced is separated from the waste lye using a typical method. Said method is particularly advantageous for obtaining cellulose from annual plants, particularly wheat straw. The method is advantageously improved in that the solubilization takes place in the presence of a catalyst, particularly of anthrachinon. An advantageous bleaching process may be performed subsequently. Said method is characterized by great economic efficiency, particularly due to the high reclamation rates of the alkanol amine used, and leads to lower environmental impact in wastewater, and to reduced disposal costs. The design of the method leads to a greater yield of cellulose and largely prevents degradation of alkanol amine, particularly monoethanol amine (MEA).

A sheet-forming unit of a papermaking machine includes a headbox which outputs a suspension jet and an inner fabric and an outer fabric, which in each case form a loop. A forming element is arranged within the loop of the inner fabric and guide rolls and a white-water box are arranged within the loop of the outer fabric. The inner fabric and the outer fabric form a gap for receiving the suspension jet and jointly wrap around the forming element at least partially in a wraparound region. A machine-wide guide element is arranged in the wraparound region within the loop of the outer fabric and/or, in the region of at least one of the guide rolls of the outer fabric, a machine-wide guide apparatus is provided outside the chamber which is formed by the loop of the outer fabric.

A process for preparing a seam area for a paper machine clothing (PMC) base fabric includes the steps of: forming the PMC base fabric by flat-weaving, the PMC base fabric including warp yarns extending in machine direction and weft yarns extending in cross machine direction and interwoven with the warp yarns, the weft yarns including first weft yarns and a second weft yarn, the second weft yarn being a multifilament yarn, the warp yarns, the first weft yarns, and the multifilament yarn being woven together on a loom in an original weaving process, the multifilament yarn being positioned in an anticipated seam area; and folding over the PMC base fabric, after weaving the multifilament yarn with the warp yarns, to form a seam loop of the PMC base fabric such that the multifilament yarn is a first one of the weft yarns on a sheet side of the seam loop.

Method for production of cellulose and hemicellulose fibers from lignocellulose biomass obtained from sugarcane leaves and buds by applying a process comprising the stages of: a) Diminishing the particle size of the lignocellulose biomass to a range between 3 and 15 mm, b) Subjecting the product obtained to treatment with one or more solvents and/or a mixture of specific catalysts, c) Carry out sudden decompression to an atmospheric pressure, d) Collecting the pretreated material in a cyclone, e) Optionally separating the liquid and solid fractions through washing and filterung f) Optionally, treating the solid fraction in a reactor with a mixture of ethanol and chlorine dioxide, d) Wash the product obtained to achieve cellulose efficiency above 50% and of lignin of 5 to 7%, fiber lengtht in a range to 1,5 to 2,7 mm, breaking length (km) of 7,0 -8,9, Burst index (kPam2/g) of 4,5-7,2 and Tear index (mNm2/g) of 8,2-8, The obtained high-resistance cellulose and hemicellulose is especially suitable for the paper production and polymer-type plastics.

A web product having at least two plies is disclosed. One of the at least two plies has a continuous pillow area disposed upon a surface thereof. A first portion of the continuous pillow area has a first width, W1, and a length, L1, and a second portion of the continuous pillow area in contacting engagement and in fluid communication with the first portion has a second width, W2, and a length, L2, wherein, W1≠W2 and L1=L2. The web product has a Basis Weight, BW, value greater than 51.6 gsm and a Dry Bulk, DB, value greater than 15.5 cc/g.

The present invention relates to a process for the production of a surface-treated calcium carbonate, the use of this surface-treated calcium carbonate in a process for the control of organic material in an aqueous medium, as well as to a composite of surface-treated calcium carbonate and organic material, such as a composite of surface-treated calcium carbonate and to the use of such a composite.

The present invention relates to a process for the production of a surface-treated calcium carbonate, the use of this surface-treated calcium carbonate in a process for the control of organic material in an aqueous medium, as well as to a composite of surface-treated calcium carbonate and organic material, such as a composite of surface-treated calcium carbonate and to the use of such a composite.

A pellet made of aramid pulp and filler material. The pellet has at most 90 weight percent aramid pulp and at least 10 weight percent filler material. A method for manufacturing a pellet that has at most 90 weight percent aramid pulp and at least 10 weight percent filler material.

The disclosure provides a dispersion for making décor paper having improved optical performance without negatively impacting mechanical strength comprising a TiO2 particle slurry comprising a treated TiO2 particle having a surface area of at least about 30 m2/g, and a cationic polymer; wherein the treatment comprises an oxide of silicon, aluminum, phosphorus or mixtures thereof; and the treatment is present in the amount of at least 15% based on the total weight of the treated titanium dioxide particle; paper pulp; and a cationic polymer; wherein the cationic polymer in the slurry and the cationic polymer in the dispersion are compatible; wherein for equal optical performance, the amount of treated TiO2 particle in the dispersion is reduced by about 10% when compared to a dispersion not comprising the treated TiO2 particle of (a). These dispersions are useful in making décor paper that may be used in paper laminates.