Class / Patent application number | Description | Number of patent applications / Date published |
521156000 | With three-membered heterocyclic reactant containing two carbon atoms and a hetero atom (i.e., nitrogen or a chalcogen atom) | 16 |
20090156703 | Polyurethane foam for steering wheel having improved water resistance - The present invention provides a polyurethane foam for an automobile steering wheel. More particularly, the present invention relates to polyurethane foam formed by using a predetermined amount of a polyol having various functional groups and OH values and a predetermined amount of isocyanate having a certain function, along with water as a foaming agent, thereby preventing the environmental problems caused by use of the conventional fluorine-based or pentane-based foaming agent and also improving durability such as water resistance. | 06-18-2009 |
20090264547 | VISCO-ELASTIC POLYURETHANE FOAM WITH CASTOR OIL - The present invention relates to polyether polyol compositions containing renewable raw materials, a process for preparing visco-elastic polyurethane foams using such compositions, correspondingly prepared visco-elastic foam materials, and the use thereof. | 10-22-2009 |
20090306237 | VISCOELASTIC FOAMS HAVING HIGH AIR FLOW - A viscoelastic polyurethane foam is the reaction product of at least one natural oil derived polyol and at least one aromatic compound having an average of more than one isocyanate group. A viscoelastic polyurethane foam has an air flow of at least about 0.5 l/s, wherein the foam is formed in the substantial absence of copolymer polyol and has not (yet) been mechanically reticulated and is preferably prepared using at least one natural oil derived polyol, more preferably in an amount of at least about 20 weight percent of the polyols used. A process of preparing a viscoelastic foam, comprises steps of (A) forming a reaction mixture including at least one polyol, at least one polyisocyanate, water, at least one catalyst wherein a the polyol comprises at least one natural oil derived polyol; and (B) subjecting the reaction mixture to conditions sufficient to result in the reaction mixture to expand and cure to form a viscoelastic polyurethane foam. In another embodiment, a process comprises steps of (a) forming a natural oil derived polyol composition comprising at least one natural oil derived polyol and water; (b) admixing at least one gelling catalyst and at least one blowing catalyst with the natural oil derived polyol composition to form a catalyst polyol admixture; (c) supplying an isocyanate in an amount corresponding to an isocyanate index for a pMDI of at least about 65 and at most about 95 or, when the isocyanate is a TDI or MDI or combination thereof, at least about 80 and at most about 105; and (c) admixing the isocyanate with the catalyst polyol admixture. | 12-10-2009 |
20100184878 | POLYURETHANE FOAMS COMPRISING OLIGOMERIC POLYOLS - The invention relates to polyurethane foams comprising oligomeric polyols. In embodiments of the invention, the polyurethane foams comprise the reaction product of: (a) a polyisocyanate; and (b) an active-hydrogen containing composition comprising an oligomeric polyol having a hydroxyl number of about 45 to about 65 mg KOH/g, a number average hydroxyl functionality (Fn) of less than about 2.7, and about 40% weight or greater oligomers. The polyurethane foams of the invention may be slabstock foams or molded foams. Also disclosed are low odor polyols and polyurethane compositions. | 07-22-2010 |
20100197820 | SOY-BASED POLYOLS - The invention provides B-sides of urethane formulations, wherein the B-sides comprise both alcohol and epoxy moieties. Also provided are urethane formulations comprising the B-side of the invention, as well as A-sides comprising isocyanate molecules. | 08-05-2010 |
20110039966 | POLYURETHANE FOAM AND POLISHING PAD - 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. | 02-17-2011 |
20110160327 | ISOCYANATE MODIFIED EPOXY RESIN FOR FUSION BONDED EPOXY FOAM APPLICATIONS - Thermosetting powder coating compositions, wherein the compositions comprise an epoxy-terminated oxazolidinone-isocyanurate polymer and are capable of forming a foam when applied to a substrate in a powder coating process, as well as methods of making and uses of such compositions. | 06-30-2011 |
20110257285 | EPOXIDE-BASED STRUCTURAL FOAM HAVING IMPROVED TENACITY - Disclosed is a thermally expandable and curable material containing: | 10-20-2011 |
20110263741 | SOFT POLYURETHANE FOAM WITH LOW RESILIENCE AND THE PREPARATION METHOD THEREOF - A novel flexible, low resilience polyurethane foam based on a reaction product of isocyanate-reactive component with isocyanate component is disclosed. The flexible, low resilience polyurethane foam is prepared by reacting (a) an isocyanate component substantially free of aromatic isocyanates having isocyanate group attached directly to aromatic ring, (b) an isocyanate-reactive mixture, (c) catalyst, and (d) optionally, one or more substance selected from the group consisting of water, surfactant, cross-linker, and additive. The flexible, low resilience polyurethane foam produced according to the present method has an isocyanate index of from 75 to 105, a density ranging from 16 to 160 kilogram per cubic meter, and ball resilience of less than 15%. | 10-27-2011 |
20110275732 | HIGHLY ELASTIC FLEXIBLE POLYURETHANE FOAMS - Flexible polyurethane foam which can be obtained by mixing
| 11-10-2011 |
20120004338 | Polymer and Method of Forming a Polymer - The present invention provides a method of forming a polymer, the method comprising reacting a first species comprising at least one isocyanate group with a second species comprising at least one aziridine group to form the polymer. | 01-05-2012 |
20120041089 | POLYOL FORMED FROM AN EPOXIDIZED OIL - A polyol includes the reaction product of an epoxidized oil and an organic acid. The epoxidized oil and the organic acid are reacted in the presence of a Lewis base catalyst including at least one of a phosphorous atom or a nitrogen atom. The polyol is formed by a method that includes the step of reacting the epoxidized oil with the organic acid in the presence of the Lewis base catalyst. | 02-16-2012 |
20120259029 | METHOD FOR MAKING LOW DENSITY POLYURETHANE FOAM FOR SOUND AND VIBRATION ABSORPTION - Flexible polyurethane foams that function well in noise and vibration absorption applications are made from a mixture of polyether polyols oxides that each has a hydroxyl equivalent weight of from 1200 to 3000 and at least 70% primary hydroxyl groups. From 5 to 80% by weight of the ethylene oxide-capped polypropylene oxides are nominally difunctional, from 0.5 to 20% by weight of the ethylene oxide-capped polypropylene oxides have a nominal functionality of four or higher, and the balance of the ethylene oxide-capped polypropylene oxides, but not less than 1.5% by weight thereof, are nominally trifunctional. | 10-11-2012 |
20130274363 | HYDROPHILIC POLYURETHANE FOAM - A method for making hydrophilic polyurethane foam includes providing methylene diphenyl diisocyanate, mixing polyether polyols with the methylene diphenyl diisocyanate, and allowing the methylene diphenyl diisocyanate and the polyether polyols to form the hydrophilic polyurethane foam. The hydrophilic polyurethane foam has a content of ethylene oxide that is between about 30-100% by weight. The methylene diphenyl diisocyanate and polyols are mixed in a one-stage process. The hydrophilic polyurethane foam absorbs water in time period that is less than about 30 seconds. | 10-17-2013 |
20140094534 | Polyurethane Foam Elastomers for High Temperature Applications - Molded elastomeric polyurethane foams suitable for use as gasketing and sealing devices for use in hot environments are disclosed. The foams are the reaction product of an aromatic polyisocyanate with an isocyanate-reactive composition that includes one or more polyether polyols, certain diol chain extenders, and certain low equivalent weight hydroxyl-containing cross-linkers. The molded foams exhibit low compression sets after being compressed and aged at elevated temperatures. | 04-03-2014 |
20150087736 | POLYURETHANE FOAM AND ASSOCIATED METHOD AND ARTICLE - A polyurethane foam is prepared from a reaction mixture that includes an aromatic isocyanate compound, and blowing agent, and a polyol that itself includes a poly(phenylene ether) having a number average molecular weight of 600 to 2000 atomic mass units and an average of 1.5 to 3 hydroxyl groups per molecule. Use of the poly(phenylene ether) is associated with faster formation of polyurethane, and increased compression force deflection. The polyurethane is useful for forming articles including bedding, furniture, automotive interiors, mass transportation interiors (seating, padding, instrument panels, door panels, steering wheels, armrests, and headrests), flooring underlay (foam, rebond binder), packaging, textiles, lining and gasketing applications, acoustic dampening materials, and weather stripping. | 03-26-2015 |