Abstract: To provide a method for producing a rigid polyurethane foam using a polymer-dispersed polyol, which has high compatibility with a polyol to be used and is excellent in the storage stability, and with which good heat insulating properties can be obtained when it is formed into a foam. A method for producing a rigid polyurethane foam, which comprises reacting a polyol (Z) with a polyisocyanate in the presence of a blowing agent, a surfactant and a catalyst, wherein the (Z) is obtained by mixing a polyol (Z1) with a polymer-dispersed polyol (A) and has an average hydroxy value of from 200 to 800 mgKOH/g. The (A) is one having a monomer polymerized in a polyol (X), the (X) contains a polyether polyol (Y), the (Y) has an oxyethylene group content of at least 15 mass % and contains a polyol Y1 having a hydroxy value of from 200 to 800 mgKOH/g and a polyol Y2 having a hydroxy value of from 5 to 84 mgKOH/g, and the monomer contains a fluorinated acrylate or a fluorinated methacrylate.

Abstract: A flame-retardant elastic polyurethane-soft-foam produced from a foam reaction mixture, comprising a polyol mixture, a polyisocyanate, an expandable graphite as a flame retardant, and additives. In order to reduce density while retaining long-term service properties, the polyol mixture comprises, in terms of parts by weight, from 50% to 90% of EO-based polyol, and from 50 to 10 parts by weight of standard polyol and/or filler polyol.

Abstract: Silicone-containing polyurethane foams prepared from isocyanate-containing organosilicon compounds and expandable graphite are flame retardant without displaying liquifaction of the polymer component when the foam is exposed to high temperatures.

Abstract: An expandable sealant is provided for a fastener including a threaded defining surface. The fastener includes the expandable sealant as a coating adhered to at least a portion of the thread-defining surface to lock the fastener in place and to expand to fill space between the thread-defining surface of the fastener and an aperture through which the fastener is passed to seal the aperture to prevent fluid and gases from passing therethrough.

Abstract: A polyurethane foam produced from a formulation comprising a polyol, an isocyanate, a strut reinforcing agent and a VOC reducing agent. The isocyanate reacts with the polyol to produce the polyurethane foam. By including the strut reinforcing and VOC adsorption agents in the formulation during the reaction between the isocyanate and the polyol, the air permeability and firmness of the polyurethane foam are enhanced while the amount of VOCs within and the level of VOCs emitted by the polyurethane foam are reduced relative to a polyurethane foam produced by reacting the isocyanate and the polyol in the absence of the strut reinforcing or VOC reducing agents.

Abstract: A molecularly imprinted material made from polymerizing a monomer having the structural formula (OR)3Si—B-A-B—Si(OR)3. A is a divalent organic group, B is a saturated or unsaturated divalent hydrocarbon group or a covalent bond, and R is an independently selected saturated or unsaturated monovalent hydrocarbon group. A preconcentrator having: a container comprising in inlet and an outlet and the above material within the container. The inlet is capable of allowing a fluid to enter the container. The outlet is capable of being coupled to a sensor and of allowing the fluid to exit the container.

Abstract: A polyurethane foam and a resin composition that may be used to form the polyurethane foam is provided. The resin composition comprises a first ethylene diamine-based polyol having about 100% ethylene oxide capping present in an amount of from 0.5 to 8 parts by weight based on 100 parts by weight of the resin composition, a second polyol, and a physical blowing agent. The polyurethane foam comprises the reaction product of an isocyanate component and the resin composition. A method of forming the polyurethane foam on a substrate, comprising the steps of combining the isocyanate component, the first ethylene diamine-based polyol having about 100% ethylene oxide capping, the second polyol, and the physical blowing agent to form a polyurethane composition is also provided. The polyurethane composition is applied onto the substrate at an ambient temperature of 0° C. or lower to form the polyurethane foam.

Abstract: A post-crosslinked adsorbent comprises: monomer units of (a) at least 55 wt % at least one polyvinylaromatic monomer and (b) up to 45 wt % at least one monovinylaromatic monomer; and 0.5-2.5 mmol/g pendent vinyl groups; wherein the dry adsorbent has BET specific surface area in the range of about 650-1000 m2/g, BET average pore diameter 7.2-10 nm, BET porosity 1.29-2.45 mL/g, BJH adsorption micropore volume was less than 20% of total BJH adsorption pore volume, and HK micropore volume was less than 21% of total BJH adsorption pore volume. The invention is also directed to a preparation method for the polymeric adsorbent.

Abstract: A cross-linked foamed pressure sensitive adhesive having excellent stress relaxing property, restoration property and solvent resistance brought forth by uniform and sufficient cross-linking and foaming irrespective of transmissibility of ultraviolet rays and electron beams to components, and free from drawbacks inherent to low molecular weight acrylic copolymers. A cross-linked foamed pressure sensitive adhesive having restoration property, prepared by heating a heat cross-linkable and heat foamable composition containing a tacky polymer having a molecular weight of at least 100,000, a heat cross-linking agent and a heat foaming agent to cause cross-linking and foaming.

Abstract: The present invention provides a rigid polyurethane foam comprising the reaction product, at an isocyanate index of from about 90 to about 400, of a polyisocyanate and a polyol component comprising, about 20 wt. % to about 80 wt. %, based on the weight of the polyol component, of a double metal cyanide (DMC)-catalyzed polyether polyol having a number average molecular weight of greater than about 1,000 Daltons (Da), about 80 wt. % to about 20 wt. %, based on the weight of the polyol component, of a sucrose-based polyol having a functionality of from about 2.5 to about 6 and a number average molecular weight of from about 350 Da to less than about 1,000 Da, and about 0 wt. % to about 40 wt. %, based on the weight of the polyol component, of a low molecular weight organic compound having a number average molecular weight of less than about 600 Da in the presence of water, polyvinylchloride (PVC) particles having a diameter of from about 0.

Abstract: An expandable sealant is provided for a fastener including a threaded defining surface. The fastener includes the expandable sealant as a coating adhered to at least a portion of the thread-defining surface to lock the fastener in place and to expand to fill space between the thread-defining surface of the fastener and an aperture through which the fastener is passed to seal the aperture to prevent fluid and gases from passing therethrough.

Abstract: To provide a method for producing a rigid polyurethane foam, whereby it is possible to obtain a rigid polyurethane foam which has a low density and good dimensional stability, and when a mixture of a polymer-dispersed polyol and a polyol for a rigid polyurethane foam to be used, is stored, the mixture is excellent in storage stability, so that a rigid polyurethane foam can be produced constantly.

Abstract: The present invention provides polymeric polyol compositions employing polyol compounds having multiple tertiary amine groups. Methods of making these compositions are also disclosed. Polyol formulations containing these polymeric polyol compositions and methods of making polyurethane gel and foam employing such polymeric polyol compositions are also provided.

Abstract: The present invention provides an improved syntactic foam plug for plug assist thermoforming wherein such plug is composed of a thermoplastic material having a relatively high melting and/or glass transition temperature. Accordingly, the subject invention encompasses diminishing or removing the undesirable characteristics of thermoset syntactic plugs while increasing the ease by which these articles may be constructed for a given use, by forming such plugs from syntactic foams containing thermoplastics.

Abstract: The present invention relates to a one-component, moisture-curing foam consisting of 10 to 60% by volume of at least one gas and of a one-component, moisture-curing composition Z comprising at least one polymer P having isocycanate groups and/or alkoxysilane groups and 5 to 50% by weight of carbon black, based on the total weight of the one-component, moisture-curing foam. Such foams are suitable as adhesives or sealants, for the production of coatings or for the film-filling of hollow structures, in particular in vehicle construction.

Abstract: The present invention relates to a kind of composite of porous resin and porous carbon particles, which has excellent adsorption, odor resistance, moisture-management, air permeability, water vapor permeability, water resistance and anti-peeling properties. Moreover, a kind of adsorbent, odor resistant, moisture-managing, air permeable, water vapor permeable, water resistant and anti-peeling polytetrafluoroethylene and its processing method are also disclosed.

Abstract: A dihydroxyphenyl cross-linked macromolecular network is provided that is useful in artificial tissue and tissue engineering applications, particularly to provide a synthetic, implantable tissue matrix material for a wide variety of tissue types. In particular, artificial or synthetic cartilage, vocal cord material, vitreous material, soft tissue material and mitral valve material are described. In an embodiment, the network is composed of tyramine-substituted and cross-linked hyaluronan molecules, wherein cross-linking is achieved via peroxidase-mediated dityramine-linkages that can be performed in vivo. The dityramine bonds provide a stable, coherent hyaluronan-based hydrogel with desired physical properties.

Abstract: A synthetic polymer foam is produced which incorporates fine particles of expandable graphite which surprisingly impart excellent fire resistant properties to the foam, particularly to foam made with a non-halogenated hydrocarbon as the primary blowing agent. For best results, the foam is produced through mixing the constituent materials, including the expandable graphite using a screw extruder. The foam can also be produced by creating a graphite/polyol or graphite/isocyanate dispersion in an extruder then mixing the remaining components in a conventional batch mixing or high pressure spraying process. Alternatively, conventional mixing can be used for the entire process, but use of a screw extruder in whole or in part is preferred.

Abstract: The purpose of the present invention is to provide a polyurethane foam that is excellent in adsorption property of odor and humidity and antibacterial property. Further, the purpose of the present invention is to provide the polyurethane foam that a user can recognize compounding of added agent such as deodorant and antibacterial agent in the polyurethane foam. The polyurethane foam of the present invention has carbon powder and/or inorganic antibacterial agent in it. Low resilience polyurethane foam is suitable as the polyurethane foam.

Abstract: This invention relates to stable liquid, trimer and allophanate-modified isocyanates, a process for the production of these isocyanates, foams prepared from these isocyanates and a process for the production of these foams.

Abstract: A thermally expandable material is provided that, once expanded, has a Young's storage modulus E? between 0.1 MPa and 1000 MPa, a loss factor of at least 0.3 (preferably, at least 1) and preferably a shear storage modulus G? between 0.1 MPa and 500 MPa at a temperature between ?10 and +40 degrees C. in the frequency range 0 to 500 Hz. Such materials are useful in combination with a carrier to form a dissipative vibratory wave barrier that effectively reduces the transfer of vibrations from a vibration generator, as may be present in a vehicle.

Abstract: A method for producing a novel silicone foam by reaction of a polyisocyanate with a silicone oligomer having a plurality of functional end groups with active hydrogens, optionally in the presence of fire-retardants, under foam forming conditions which creates a new silicone foam for use in items such as residential upholstered furniture industry, seat cushions and bedding etc., and specifically for use in applications that require, high resilience and fire-retardant properties such as aircraft and surface transportation seat cushioning, military and shipboard mattresses etc.

Abstract: The present invention discloses a water dispersible polymer particle stabilized by a hydrophobically capped oligomeric acrylamide dispersant. The present invention also discloses a heterogeneous method for forming polymer particles comprising providing a water immiscible organic phase comprising at least one monomer dispersed in a continuous water phase and a hydrophobically capped oligomeric acrylamide, and polymerizing said organic phase to yield polymer particles stabilized with hydrophobically capped oligomeric acrylamide. Also disclosed in the present invention is a heterogeneous method for forming polymer particles comprising providing a water immiscible organic dispersed in a continuous water phase, polymerizing said organic phase, and adding bydrophobically capped oligomeric acrylamide to yield polymer particles stabilized with hydrophobically capped oligomeric acrylamide.

Abstract: A novel flexible polyurethane foam having good vibration characteristics and being excellent in occupant posture stability, is provided. A flexible polyurethane foam obtainable by reacting a high molecular weight polyoxyalkylene polyol or a polymer-dispersed polyol containing fine polymer particles in the high molecular weight polyoxyalkylene polyol, with a polyisocyanate compound in the presence of a catalyst, a blowing agent and a foam stabilizer, characterized in that as at least a part of the foam stabilizer, the following fluorinated compound (F) is used in an amount of from 0.

Abstract: Provided is a process for preparing a polyurethane urea pad adapted to polish a microelectronic substrate. The pad includes at least partially gas-filled cells substantially uniformly distributed throughout. The process is s follows: forming a reaction mixture by adding to a mixing unit the following mixture components: (a) a polyisocyanate, (b) an amine-containing material, (c) a blowing agent, and (d) optionally, a hydroxyl-containing material; mechanically mixing the reaction mixture at a pressure of less than 20 bar; dispensing the reaction mixture into an open mold; and curing the reaction mixture to form a polyurethane urea, wherein the at least partially gas-filled cells comprise carbon dioxide produced by the reaction of the mixture components.

Abstract: The invention provides a method for forming polymer microrods, the method including the steps of providing a polymer solution comprising a polymer dissolved in a first solvent; providing a dispersion medium comprising a second solvent, wherein the first solvent and the second solvent are miscible or partially soluble in each other, and wherein the polymer is insoluble in the second solvent; adding the polymer solution to the dispersion medium to form a dispersed phase of polymer solution droplets within the dispersion medium; and introducing a shear stress to the dispersion medium and dispersed polymer solution droplets for a time and at a shear rate sufficient to elongate the polymer solution droplets to form microrods and solidify the microrods by attrition of the polymer solvent into the dispersion medium.

Abstract: Molecularly imprinted polymer membranes for selectively collecting phosphate, nitrate and ferric ions are disclosed, prepared by copolymerizing a matrix monomer, cross-linking agent, ion imprinting complex, permeability agent and polymerization initiator, after which the ions of the ion imprinting complex are permeability agent are removed. The permeability agent creates channels in the membrane permitting the ion binding sites in the membrane to communicate with the exterior surface of the membrane.

Abstract: Surprisingly effective additive formulations for the reduction of highly undesirable yellowing or other discoloration of white, uncolored, polyurethane foam articles are provided. White polyurethane foam exhibits a susceptibility to yellowing and discoloration to a great extent, particularly in relatively short periods of time, than other types of polymeric articles. The inventive additives impart excellent low-discoloration properties over appreciable amounts of time of regular exposure to harmful elements, thereby according the pertinent industry a manner of providing white polyurethane foams for longer periods of time. Methods of producing such reliably white-colored polyurethane foams are also provided.

Abstract: Provided is a coating liquid for forming a porous film having desirably controlled thickness and having excellent dielectric and mechanical properties, using the conventional semiconductor process. Specifically, provided is a composition for forming a porous film comprising a condensation product and an organic solvent wherein the condensation product is obtained by hydrolysis and condensation, at presence of a basic catalyst, of one or more silane compounds represented by formula (1): R1kSi(OR2)4-k, and one or more crosslinking agents represented by formula (2): {Xj(Y)3-jSi-(L)m-}nMZ4-n. Moreover, a method for manufacturing a porous film comprising steps of applying said composition so as to form a film, drying the film and heating the dried film so as to hardent the film, and others are provided.

Abstract: Process for the preparation of foamed thermoplastic polyurethanes characterized in that the foaming of the thermoplastic polyurethane is carried out in the presence of thermally expandable microspheres.

Abstract: Black polyurethane foams that exhibit higher strength black colorations without the need for concomitant increases in black colorants therein are provided. Such a resultant jetter black foam article is possible through the unexpectedly effective introduction of small amounts of certain toner compounds or combinations that exhibit specific measurable appearance characteristics. Such toners exhibit at least one absorption peak within a specific range of wavelengths (e.g., from about 560 to 610 nm) and specific ranges of half-height bandwidths (from 40 to 130 nm). Furthermore, such a compound or combination of compounds, is preferably liquid in nature (at room temperature) or in dispersion form and may thus be easily incorporated within target polyurethane precursor compositions for admixture with either black pigments (or dispersions thereof), black polymeric (liquid) colorants, or both.

Abstract: The present invention relates to a process for the production of a cellular composite, and to the resultant cellular composites. This process comprising (A) preparing a mixture of a polyisocyanate, water, and, optionally, one or more additives; (B) adding this mixture under low shear mixing to inorganic hollow microspheres; (C) completely filling a mold with the mixture; and (D) heating the mold containing the mixture to a temperature of from 100 to 280° C., thereby forming the composite.

Abstract: A mesoporous polymer and method of preparing a mesoporous polymer whose polymerization kinetics are dependent upon pH and whose pore size is controlled by pH and solvent concentration are disclosed. The polymer is optionally pyrolyzed to form a primarily carbonaceous solid. The material has an average pore size in the mesopore range and is suitable for use in liquid-phase surface limited applications including chromatographic, sorbent, catalytic, and electrical applications.

Abstract: The present invention features a method for the formation of superporous hydrogels using an ion-equilibration technique. Anionic polysaccharides are included in the hydrogel reaction mixture and cations are introduced either during or after hydrogel formation. Properties of the resulting hydrogel can be subsequently adjusted by treating the cation-complexed gel with a different cation or cation mixture under equilibrating conditions. It has been found that by properly adjusting the cations and the sequence in which they are used in the equilibration process, superporous hydrogels can be formed that are highly absorbent while maintaining favorable structural properties, including strength, ruggedness, and resiliency. It has also been found that applying appropriate dehydration conditions to them after their formation can further stabilize the superporous hydrogels formed by the method of the invention.

Abstract: A static dissipative flexible polyurethane foam is formed under free rise expansion conditions from a polyether graft polyol and an isocyanate, wherein one or more anti-static additives are incorporated into the reaction mix in an amount from 0.10 to 20 parts by weight. Water is added in an amount of from 0.2 to 1.0 parts per weight. Upon curing, the foam has a density in the range of 6 to 20 pounds per cubic foot, a surface resistivity below 1×1011 ohms/square, and a pore size in the range of 100 to 250 pores per inch. The foam may be fabricated (cut or shaped) to form a shaped article, such as a roller, a clean room wipe, a cosmetic applicator or a packaging element.

Abstract: A dihydroxyphenyl cross-linked macromolecular network is provided that is useful in artificial tissue and tissue engineering applications, such as artificial or synthetic cartilage. The network is made by first providing a polyamine or polycarboxylate macromolecule (having a plurality of amine or carboxylic acid groups respectively attached along the length of the molecule), reacting this macromolecule with a hydroxyphenyl compound having a free carboxylic acid group in the case of a polyamine or a free primary amine group in the case of a polycarboxylate, and substituting the hydroxyphenyl compound onto the macromolecule via a carbodiimide-mediated reaction pathway to provide a hydroxyphenyl-substituted macromolecule. This macromolecule is then linked to other such macromolecules via an enzyme catalyzed dimerization reaction between two hydroxyphenyl groups attached respectively to different macromolecules under metabolic conditions of temperature and pH.

Abstract: A fiber-free molding composition containing: (a) a binder selected from the group consisting of an epoxide, a polyisocyanate, a furane-resin-free phenolic resin, and mixtures thereof; and (b) a filler mixture containing: (i) an inorganic high-temperature-resistant filler; and (ii) a heat-activatable swelling agent.

Abstract: The present invention provides a ring-containing component polyol and process for making the same for use as a load-bearing capacity improvement agent in flexible polyurethane foam manufacture. The ring-containing component polyol eliminates and/or reduces the need for a copolymer polyol containing suspended solids in the manufacture of flexible foam products. This may reduce production costs, reactivity variations, filter plugging, color variations, foam shrinkage/tightness, foam irregularity, and foam malodor while maintaining an adequate load-bearing capacity. The present polyol blends can be non-opaque or transparent.

Abstract: A system and a method of providing PUR/PIR foam using flammable blowing agent. The flammable blowing agent is introduced to PUR/PIR manufacturing equipment via an independent feed-line. This enables a flammable blowing agent storage vessel to be located off site from the foam manufacturing equipment. The independent flammable blowing agent feed-line couples the off-site flammable blowing agent storage vessel with the foam production system. The preferred flammable blowing agent is pentane.

Abstract: The polyisocyanate polyaddition products comprise hydrophobic compounds plus at least one further compound selected from the group consisting of: (i) organic, cyclic compounds having a molecular weight of from 200 to 3000 g/mol, (ii) salts of metals of transition groups I, II and/or VIII, (iii) organic and/or inorganic acid anhydrides, (iv) cyclic sulfonic esters and/or sulfones, (v) lactones, lactams and/or cyclic esters and/or (vi) &agr;,&bgr;-unsaturated carboxylic acids, &agr;,&bgr;-unsaturated carboxylic acid derivatives, &agr;,&bgr;-unsaturated ketones and/or &agr;,&bgr;-unsaturated aldehydes.

Abstract: A sprayable composition and a method of protecting material with the composition is disclosed. The composition comprises a bulking/setting material, a water soluble polymer and water to provide a cover layer which, after spraying, is tough, flexible and water-repellent. Other materials such as clay, fibrous material, a foam producing agent and a hardening retarder can be included in the composition. The composition is effective as a cover layer over material such as soil, refuse at a dump site, stockpiled material, a temporary cover for remediation sites, or tire piles.

Abstract: Disclosed are low k-factor foams and methods of producing such foams. The methods comprise cooling high boiling blowing agent compounds to low temperatures and in introducing such cooled, high boiling blowing agents to the reaction mixture from which the foam is made.

Abstract: A flexible isocyanate-based polymeric foam which has: (i) low resiliency; (ii) a Tg less than or equal to about 0° C.; and (iii) a change in tan &dgr; less than or equal to about 35% from a median value measured over a temperature range of from about −20° to about +60° C. The foam may be produced using a formulation comprising selected plasticizers as set in the disclosure. The subject foam is less temperature sensitive than currently known low resilience, flexible polyurethane foams. Thus, the present foam finds many applications such as for use in the interior of a vehicle where energy dissipation of the foam is important over a relatively wide temperature range—e.g., −20° to +60° C.

Abstract: A composition comprising at least a part A and a part B is disclosed. The part A comprises at least one polyol and the part B comprises at least one isocyanate. At least one part further comprises at least one of the following: a strength enhancer having a softening point of from about 120° F. to about 400° F.; a non-reactive hydrophobic enhancer; and/or an impact absorption enhancer. These enhancers provide, among optional other benefits, enhanced pull strength. Additionally, a mass can be prepared by a method of combining part A with part B and applying the mixture to a void. The compositions may also be used in the repair of surface defects or for the reinforcement of structural members such as spike holes left after spike removal from railroad ties during road bed maintenance or repair.

Abstract: Prepare a multimodal thermoplastic polymer foam having a distribution of large and small cells in a substantial absence of water by using a blowing agent stabilizer. Multimodal foams of the present invention have blowing agent stabilizer predominantly located proximate to large cells. The resulting multimodal foams have particular utility as thermal insulating materials.

Abstract: A flexible, flame-retarded, polyurethane foam comprising brominated and/or phosphorous flame retardants and an acid scavenger.

Abstract: A polymeric sponge includes cellulose fibers imbedded therein. The sponge is made by mixing water and cellulose fibers with a water-catalyzing prepolymer for chemical reaction thereof. The mixture is cured and granulated to size. The cellulose fibers enhance both the manufacturing process and the resulting sponge for increasing strength, durability, and performance thereof.

Abstract: A polymeric sponge includes cellulose fibers imbedded therein. The sponge is made by mixing water and cellulose fibers with a water-catalyzing prepolymer for chemical reaction thereof. The mixture is cured and granulated to size. The cellulose fibers enhance both the manufacturing process and the resulting sponge for increasing strength, durability, and performance thereof.

Abstract: A micropore open cell foam composite and a method for manufacturing a micropore open cell foam composite wherein the micropore open cell foam composites comprise a micropore open cell foam having an open cell content of greater than about 80% volume and an average pore size of about 200 microns or less and a phase change material in the open cell foam in the amount of 80% volume or greater.

Abstract: Process for preparing rigid and flexible polyurethane foams by reacting a polyisocyanate, polyols and water in the presence of a catalyst and a fire retardant which is a combination of expandable graphite and phosphorous-containing compound.