Abstract: The present invention relates to a novel method for manufacturing a cellular elastomeric polyurethane foam ball. The product polyurethane foam ball may be used as a core for a tennis ball which meets ITF specifications for tennis balls, including weight, diameter, bound, forward deformation and return deformation.

Abstract: A cylindrical molding based on cellular polyurethane elastomers having a density according to DIN EN ISO 845 of from 300 to 900 kg/m3, a tensile strength according to DIN EN ISO 1798 of ?2.

Abstract: An earpiece of flexible foam construction which incorporates recycled pulverized polyurethane foam (RPPF). RPPF constituting 5% to 30% of the improved foam has been found to be useful. The novel and unique nature of RPPF allows for the replacement of a higher cost component with a lower cost component while maintaining or improving physical properties, such as sound attenuation, sound control, comfort and fit.

Abstract: A polyol composition contains a polyaminochlorophenylmethane mixture (A) and a polyol (B), in which the component (A) is uniformly dissolved in the component (A) in a weight ratio of 30/70 to 60/40. The component (A) includes 50 to 70% by weight of a specific binuclear polyaminochlorophenylmethane compound, 20 to 40% by weight of a specific trinuclear polyaminochlorophenylmethane compound and 5 to 10% by weight of a specific tetranuclear or higher polyaminochlorophenylmethane compound. The polyol composition exhibits excellent miscibility and dissolution stability, is liquid and enables molding of a foamed article for abrasive in a simple two-component mixing casting machine. According to the present invention, water serving as a foaming agent can be added to the polyol composition containing MBOCA, and the composition for a two-component curable abrasive foam can be held to a temperature equal to or lower than the boiling point of water, thus avoiding water from evaporating upon molding.

Abstract: The present invention provides rigid polyurethane foam comprising thermally expandable particles which are displaced to penetrate a strut of a structure of the polyurethane foam so that the particles are exposed into one or more cells of the polyurethane foam during foaming. Further, the rigid polyurethane foam can comprise hollow thermally expanded particles which are displaced to penetrate a surface of a cell in the polyurethane foam so that the particles are exposed into one or more cells of the polyurethane foam during foaming. The rigid polyurethane of the present invention can have excellent insulating properties.

Abstract: A fire-resistant polyurethane foam is provided. A hydroxyl-containing inorganic fire retardant is premixed with a polyisocyanate and a polyol, respectively, to form two premixtures. Then, the two premixtures are mixed for reaction to form a fire-resistant polyurethane foam. Preferably, a combination of different particle sizes of the fire retardant is employed to maximize the amount of the fire retardant and increase the fire resistance of the foam.

Abstract: Process for making a slabstock, visco-elastic, flexible, polyurethane foam which process comprises reacting a polyisocyanate and a polyol at an index of 60-95 and using a blowing agent, wherein 5-50 and preferably 10-40% by weight of the polyol used is castor oil. The foams and a polyol composition are claimed as well.

Abstract: The invention provides a polyurethane foam manufactured from a polyisocyanate and a polycarbonate polyol. Moreover, the invention provides a method of manufacturing the polyurethane foam manufactured from a polyisocyanate and a polycarbonate polyol, comprising mixing the polyisocyanate and polycarbonate polyol together and foaming same.

Abstract: The present invention is to a molded rigid polyurethane foam for application in appliance, having a reduced thermal conductivity at densities between 33 and 38 kg/m3 and a process for the production of such foams. The molded rigid polyurethane foam have a ratio of applied foam density (kg/m3) to lambda (mW/mK), measured at 10° C., 24 hours after foam production from 1.65 and to 2.15 and are obtained by the process of injecting into a closed mold cavity under reduced pressure a reaction mixture at a packing factor of 1.1 to 1.9 and the reaction mixture comprises: A) an organic polyisocyanate; B) a physical blowing agent, C) a polyol composition containing at least one polyol with a functionality of 3 or greater and a hydroxyl number between 200 and 800 and a water content of 0 to 2.5 weight percent of the total polyol composition; D) catalyst and E) auxiliary substances and/or additives.

Abstract: The invention presents a new method to prepare biomedical polyurethanes with high tensile and tear strengths. Such polyurethanes are especially interesting for making foams thereof, e.g. as meniscus implants. A new method, applicable to the biomedical polyurethanes, has been found to make such foams, that can be used as scaffolds. This method is based on salt leaching and phase separation.

Abstract: In one of its aspects, the present invention relates to foamed isocyanate-based polymer derived from a reaction mixture comprising an isocyanate, an active hydrogen-containing compound, a dendritic macromolecule and a blowing agent; wherein at least a 15% by weight of the dendritic macromolecule may be mixed with a polyether polyol having an OH number less than about 40 mg KOH/g to form a stable liquid at 23° C. The dendritic macromolecule confers advantageous load building characteristics to the foamed isocyanate-based polymer and may be used to partially or fully displace the use of conventional copolymer polyols used. A process for production of a foam isocyanate-based polymer and a process for conferring loading building properties to a foamed isocyanate-based polymer are also described.

Abstract: A method of preparing a rigid foam material is presented, the method comprising: providing a curable liquid matrix material; mixing the liquid matrix material with a plurality of microspheres; adding nanoparticles to the matrix material; and curing a mixture comprising the matrix material, the microspheres and the nanoparticles. The addition of nanoparticles to the matrix material may significantly reduce the viscosity of the mixture comprising the liquid matrix material and the microspheres. Thereby, even a mixture comprising a very high content of microspheres in access of 60 Vol.-% can still be handled and e.g. filled in a mould and/or be de-gassed. Thus, a rigid foam material having low specific weight and high electrically insulating properties can be produced. Furthermore, a method of preparing a liquid material with reduced viscosity is proposed, the method comprising: providing a liquid material; adding nanoparticles to the liquid material.

Abstract: Composite materials and methods for their preparation are described herein. The composite materials include a polyurethane made from the reaction of an isocyanate and a polyol, and coal ash (e.g., fly ash). The isocyanates for these composite materials may be selected from the group consisting of diisocyanates, polyisocyanates, and mixtures thereof. The polyol consists essentially of one or more plant-based polyols, the one or more plant-based polyols including castor oil. The fly ash is present in amounts from about 40% to about 90% by weight of the composite material. Also described is a method of preparing a composite material, including mixing an isocyanate, a polyol, coal ash (e.g., fly ash), and a catalyst.

Abstract: A polyol prepolymer having at least one urethane group is disclosed. The polyol preopolymer is a reaction product of at least one isocyanate and a polyol blend, where the polyol blend includes at least one conventional petroleum-based polyol and at least one natural oil based polyol. The polyol prepolymer may be used in producing flexible polyurethane foams.

Abstract: Composite materials and methods for their preparation are described herein. The composite materials include a polyurethane made from the reaction of at least one isocyanate and at least one polyol, and coal ash (e.g., fly ash). The isocyanates for these composite materials may be selected from the group consisting of diisocyanates, polyisocyanates, and mixtures thereof. The at least one polyol includes lesquerella oil. The coal ash is present in amounts from about 40% to about 90% by weight of the composite material. Also described is a method of preparing a composite material, including mixing at least one isocyanate, at least one polyol, coal ash (e.g., fly ash), and a catalyst.

Abstract: Disclosed is a multi-isocyanate prepolymer formed by reacting diisocyanate and/or diisocyanate trimer with diol and/or triol. Because the prepolymer and the diol/triol have similar molecular weights, additional crosslink agents such as diamine, multi-amine, or combinations thereof are not necessary. Furthermore, the prepolymer can be blown to form foam, or directly gelled to form an unbubbled product such as film.

Abstract: Methods for producing a polyols and polyurethanes are described. The polyols described herein can be produced directly from crude glycerin or through liquefaction of lignocellulosic biomass using a solvent comprising crude glycerin. The polyols produced in accordance with certain aspects may be derived from a significant proportion of renewable resources.

Abstract: An improved polyol, having a first component combined with a second component, one of the first and second components being hydrophobic and one of the first and second components being hydrophillic, at least one of the components being in a stable encapsulation or being in a stable emulsion, desirably formed of calcium carbonate and silicon dioxide.

Abstract: A polyurethane foam composition that includes polyol, isocyanate, a catalyst, a surfactant, a physical blowing agent, a chemical blowing agent, a nucleating agent and a silsesquioxane compound is provided.

Abstract: A flame retardant composition comprises: (i) at least one flame retardant; (ii) at least one lactone stabilizer; (iii) at least one phosphite stabilizer; (iv) at least one epoxide stabilizer; and, (v) optionally, at least one stabilizer performance enhancer for lactone stabilizer (ii).

Abstract: The invention relates to a process for producing rigid polyurethane foams by reacting a) polyisocyanates with b) compounds having at least two hydrogen atoms which are reactive toward isocyanate groups in the presence of c) blowing agents wherein a mixture of b1) a polyether alcohol which has a functionality of 4 and a hydroxyl number of from 380 to 450 mg KOH/g and a viscosity of greater than 12 000 mPa·s and can be prepared by addition of ethylene oxide and/or propylene oxide onto TDA, b2) a polyether alcohol which has a functionality of from 5 to 7.

Abstract: Rigid polyurethane blowing agent enhancers, methods for using them, and the products produced by these methods are disclosed. The enhancers are low molecular weight alcohols and/or ethers that assist the action of blowing agents comprising a hydrohalocarbon compound.

Abstract: The present invention provides a polyurethane foam, which, despite having a low specific gravity, has a hardness and an elasticity favorable for a polishing pad, and a polishing pad made using the polyurethane foam. The polyurethane foam is obtained by reacting a blend composition containing (A) polyisocyanate, (B) a polyol, (C) a chain extender with a molecular weight of equal to or smaller than 400, and (D) water, and in the blend composition, MDI is blended as a main component of the component (A) and a blending amount of the MDI is 45 to 70 parts by weight when a total weight of the respective components (A), (B), and (C) is taken as 100 parts by weight.

Abstract: A process is disclosed for preparing a elastomer by contacting under reaction conditions: a) an isocyanate component comprising an isocyanate-terminated prepolymer having an isocyanate (NCO) content of 10 to 30 weight percent where the prepolymer is the reaction product of a stoichiometric excess of one or more di- or poly-isocyanate compounds, collectively referred to hereinafter as isocyanate component, with a first polyol component; b) a second polyol component; and c) an effective amount of a blowing agent to provide a polyurethane elastomer with a density of from 200 to 1200 kg/m3; wherein a) and b) are used at an isocyanate index of from 85 to 115, and at least one of the first polyol composition and the second polyol composition contains at least one hydroxymethyl-containing polyester polyol.

Abstract: New shape memory polymer compositions, methods for synthesizing new shape memory polymers, and apparatus comprising an actuator and a shape memory polymer wherein the shape memory polymer comprises at least a portion of the actuator. A shape memory polymer comprising a polymer composition which physically forms a network structure wherein the polymer composition has shape-memory behavior and can be formed into a permanent primary shape, re-formed into a stable secondary shape, and controllably actuated to recover the permanent primary shape. Polymers have optimal aliphatic network structures due to minimization of dangling chains by using monomers that are symmetrical and that have matching amine and hydroxyl groups providing polymers and polymer foams with clarity, tight (narrow temperature range) single transitions, and high shape recovery and recovery force that are especially useful for implanting in the human body.

Abstract: A process for producing polyurethane foam filter material with adsorption capabilities, containing a solid adsorbent, that comprises a one shot process of reacting a polyurethane foam-forming formulation, comprising isocyanates and polyesters or polyethers, catalysts, silicone oils and water, characterized in that particles of the adsorbent material are included directly in the foam-forming formulation, without any surface pretreatment, after cleansing by heating. The resulting filter material can be sliced in plates of various thicknesses according to the intended particular use, and this use can be in air filtering systems, for purification of air or water, ion-exchange, deodorization, drying, prevention of public hazards, or the separation and purification.

Abstract: The present invention relates to a composition based on trans-1,2-dichloroethylene. A subject-matter of the invention is more particularly a nonflammable composition comprising trans-1,2-dichloroethylene and at least two hydrofluorocarbons and its uses.

Abstract: This invention relates to biodurable, reticulated elastomeric matrices that are resiliently-compressible, their manufacture and uses including uses for implantable devices into or for topical treatment of patients, such as humans and other animals, for therapeutic, nutritional, or other useful purposes.

Abstract: A prepolymer and products made from the preopolymer is described. The prepolymer includes the reaction product of at least one isocyanate and at least one natural oil based polyol. The natural oil based polyol includes at least two natural oil moieties separated by a molecular structure having an average of at least about 19 ether groups between any 2 of the natural oil moieties or by a polyether molecular structure having an equivalent weight of at least about 480.

Abstract: A method for preparing a water blown, low density, rigid polyurethane foam which comprises contacting at least one polyisocyanate with at least one polyol, at an Isocyanate Index of 70 to 200, in the presence of a blowing agent composition comprising at least 75 wt % water and an effective amount of a catalyst composition comprising a gelling catalyst which is bis-(N,N-dimethylaminopropyl)amine and a blowing catalyst which is N,N-dimethylaminoethyl-N?-methyl-ethanolamine, the foam having a density of 6 to 16 Kg/m3.

Abstract: Polyurethane molded foams having a surface region and an interior region and comprising a flame-retardant solid, wherein the flame-retardant solid is present in the surface region in a proportion higher than a proportion of the flame-retardant solid in the interior region; processes for preparing the same; and materials comprising such foams.

Abstract: A storage and shipping stable polyol blend is provided, The polyol blend includes a first and second polyol. The first polyol may be derived from a natural oil, and the second polyol, may be an amine initiated conventional petroleum-based polyol. The mixture of the first and second polyols form a polyol blend having a single continuous phase.

Abstract: The subject invention provides an open-celled polyurethane foam formed from a polyurethane spray foam system that mixes a formulated resin component with an isocyanate component. The resultant open-celled polyurethane spray foam has a density of about ½ pound per cubic foot. The resin component includes water as a blowing agent, a first aliphatic, amine-initiated polyol having a number-average molecular weight of from 150 to 500 and having tetra-functionality, and a second polyol having terminal hydroxyl groups and having a number-average molecular weight of from 3500 to 8000. A curing component having at least one primary amine group and having a number-average molecular weight of from 150 to 5000 is also included in the resin component. The spray foam system reacts a) the resin component and b) the isocyanate component in a volumetric ratio of a) to b) of from 1:1.2 to 1:5 and having an isocyanate index of from 15 to 70.

Abstract: The invention provides a molding producible by a process comprising the following steps: a) introduction of a foamable reactive resin into a support material and b) compressive deformation of the support material comprising the foamable reactive resin.

Abstract: The present invention relates to compositions containing polyether-siloxane copolymers which are based on branched SiH-functional siloxanes, where at least one of the polyether-siloxane copolymers has a radical —OR8 where R8=hydrogen or an alkyl radical having from 1 to 10 carbon atoms which is bound to a silicon atom, a process for producing polyurethane foam in which these compositions are used as foam stabilizers, polyurethane foams containing these compositions and the use of these polyurethane foams.

Abstract: Embodiments of the disclosure include aromatic polyol compositions, resin blend compositions, and spray foam compositions.

Abstract: A method of manufacturing a polyisocyanurate foam insulation board, the method comprising contacting a stream of reactants that comprise an isocyanate-reactive compound with a stream of reactants that include an isocyanate compound to form a reaction product, where the step of contacting takes place in the presence of a blowing agent and a low-boiling inert gas, and where the amount of low-boiling inert gas present at the time of the contacting is sufficient to result in frothing of the reaction product.

Abstract: A foamed resin product having shape-formable properties, a method of using the same and a cushion material that is to be worn by the human body are provided. The foamed resin product (a flexible polyurethane foam, etc.) has a glass transition temperature, expressed as the temperature of the loss tangent peak, of 10° C. to 35° C., a loss tangent within this temperature range of 0.20 to 0.80, and, with respect to the storage elastic modulus (G?) within this temperature range, the ratio (G?max/G?min) of maximum value (G?max) to minimum value (G?min) of 3.0 to 30. The using method thereof has attaching a molded article made of the foamed resin product to the surface of the human body, and lowering the hardness of the molded article due to the heat transferred from the human body so as to deform the molded article by allowing to follow-up the shape of the body.

Abstract: A polymer polyol composition of conventional petroleum-based polyols, natural oil derived polyols, PIPA and/or PHD particles made in the presence of natural oil derived polyols, and conventional petroleum-based polymer particles is provided. The polymer polyol composition may be used to form polyurethane foams.

Abstract: A method for making antimicrobial rebonded carpet pad includes mixing zinc pyrithione with a polyol to form an antimicrobial polyol mixture concentrate, blending the antimicrobial polyol mixture concentrate with a binder stream, mixing the binder with foam particles and curing the binder. The percentage of zinc pyrithione mixed with the polyol and the addition ratio of the antimicrobial polyol mixture concentrate with the binder stream are selected to provide an overall concentration of zinc pyrithione in the binder of at least about 7500 ppm. The particles and binder are cured into a block and sliced to form carpet pad.

Abstract: To provide a flexible polyurethane foam having good vibration characteristics and suitable particularly for a seat for an automobile. A flexible polyurethane foam obtained 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 an amino-modified silicone (F) having a silicon atom and a nitrogen atom in its molecule is used in an amount of from 0.00001 to 1 part by mass per 100 parts by mass of all active hydrogen compounds.

Abstract: A prepolymer or elastomer is the reaction product of reactants (a) at least one polyester polyol or fatty acid derived polyol which is the reaction product of at least one initiator and a mixture of fatty acids or derivatives of fatty acids comprising at least about 45 weight percent monounsaturated fatty acids or derivatives thereof, (b) optionally, at least one polyol which is different from the polyol of (a); and (c) at least one isocyanate compound (herein after isocyanate) having an average of at least about 1.8 isocyanate groups per molecule. A process comprises admixing reactants (a) at least one polyol composition comprising the fatty acid derived polyol which is the reaction product of at least one initiator and a mixture of fatty acids or derivatives of fatty acids comprising at least about any of 45 weight percent monounsaturated fatty acids or derivatives thereof; and (b) at least one isocyanate having an average functionality of at least about 1.

Abstract: The invention relates to oligomeric polyols that are made from palm-based oils and to polyurethane compositions comprising the oligomeric palm-based polyols. Oligomeric polyols of the invention comprise a ring-opened and oligomerized epoxidized palm-based oil composition comprising about 40% wt. or greater oligomers, a hydroxyl number of about 65 or less, a number average hydroxyl functionality (fn) of about 2.5 or less, and a viscosity at 25° C. of about 4 Pa-s or less.

Abstract: A polyurethane foam for thermal insulation at extremely low temperatures. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

Abstract: The present disclosure relates to reticulated elastomeric matrices, and more particularly to at least partially degradable elastomeric elements that are compressible and exhibit resilience in their recovery and that can be employed in diverse applications including, without limitation, biological implantation, especially in humans.

Abstract: This invention relates to biodurable, reticulated elastomeric matrices that are resiliently-compressible, their manufacture and uses including uses for implantable devices into or for topical treatment of patients, such as humans and other animals, for therapeutic, nutritional, or other useful purposes.

Abstract: A high resilience (HR) polyurethane foam comprising the reaction product of (1) at least one polyisocyanate comprising at least about 5 weight percent of at least one methylene diphenyl diisocyanate isomer, derivative or a combination thereof and (2) an admixture of at least one natural oil based polyol and at least one additional polyol which is not a natural oil based polyol, wherein the admixture comprises at least about 10 weight percent natural oil based polyol and at least about 40 weight percent additional polyol having an equivalent weight of at least about 1700 Daltons; and the foam has a resiliency indicated by a ball rebound of at least 40 percent as measured according to the procedures of ASTM D 3574, Test H. An HR foam is made according to a process comprising steps of (a) forming a natural oil based polyol composition comprising at least about 10 weight percent of at least one natural oil based polyol having an OH functionality of at least about 2.

Abstract: Compatibilizers for mutually immiscible polyol compositions, characterized in that they comprise dispersed particles, and processes for production of these and their use in polyurethane foams.

Abstract: A prepolymer having an NCO content of less than 10%, based on the reaction of (a) diisocyanate with (b) polyether alcohol, the (b) polyether alcohol comprising (b1) and (b2) and/or (b3) with the following meanings for (b1), (b2) and (b3): (b1) polytetrahydrofuran having a molecular weight of from 1800 to 2100 g/mol and (b2) polyether alcohol having a molecular weight of from 500 to 7000 g/mol, based on ethylene oxide and/or propylene oxide, and/or (b3) polytetrahydrofuran having a molecular weight of from 800 to 1200 g/mol.

Abstract: The invention relates to a process for producing open-celled viscoelastic flexible polyurethane foams based on renewable raw materials by reacting a) polyisocyanates with b) a polyol mixture comprising bi) compounds having at least two hydrogen atoms which are reactive toward isocyanate groups and an OH number of from 20 to 100 mg KOH/g and bii) compounds having at least two hydrogen atoms which are reactive toward isocyanate groups and an OH number of from 100 to 800 mg KOH/g and biii) compounds having at least one and not more than two hydrogen atoms which are reactive toward isocyanate groups and an OHN of from 100 to 800 mg KOH/g, c) and blowing agents, wherein the components bi) and bii) each comprise at least one compound which comprises renewable raw materials or reaction products thereof.