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| Number | Title | Issue Date |
| 8133930 | Polyurethane foams made from hydroxymethyl-containing polyester polyols Flexible polyurethane foams are prepared by reacting a polyisocyanate with a high equivalent weight polyol. At least a portion of the high equivalent weight polyol is a polyester containing hydroxymethyl groups. The polyester is prepared in a multi-step process from... | 03/13/2012 |
| 8003708 | Process for making rigid polyurethane foams Process for making rigid polyurethane or urethane-modified polyisocyanurate foams at an isocyanate index of between 110 and 120 comprising the step of reacting an organic polyisocyanate composition with an isocyanate-reactive composition in the presence of a hydroca... | 08/23/2011 |
| 7666919 | Aromatic diacid ester diols and substituted carbamates thereof for minimizing deterioration of polyurethane foams A composition for making a polyurethane foam includes a non-fugitive tertiary amine urethane catalyst and an aromatic diacid ester diol or substituted carbamate thereof. Foams prepared from the reaction of a polyol and an organic isocyanate in the presence of these ... | 02/23/2010 |
| 7615580 | Ester alcohols and substituted carbamates thereof for minimizing deterioration of polyurethane foams A composition for making a polyurethane foam includes a non-fugitive tertiary amine urethane catalyst and an ester alcohol or substituted carbamate thereof. Foams prepared from the reaction of a polyol and an organic isocyanate in the presence of these ingredients s... | 11/10/2009 |
| 7414080 | Polyurethane polishing pad The polishing pad is suitable for planarizing at least one of semiconductor, optical and magnetic substrates. The polishing pad includes a cast polyurethane polymeric material formed with an isocyanate-terminated reaction product formed from a prepolymer reaction of... | 08/19/2008 |
| 7393465 | Hydrophobic polyols of low viscosity A process for preparing hydrophobic polyols that includes reacting A) a mixture having an OH content of from 180 to 300 mg KOH/g, a viscosity at 23° C. of from 5000 to 20 000 mPas and an OH functionality of from 2.8 to 4.5 including from 5 to 20 wt. % of 3-pentadec... | 07/01/2008 |
| 7390867 | Isocyanate adducts The invention relates to isocyanate adducts which can be prepared by reacting at least one polyisocyanate with compounds having at least two hydrogen atoms which are reactive toward isocyanate groups and have a crystalline content of less than 10 J/g determined by d... | 06/24/2008 |
| 7300961 | Polyol compositions useful for preparing dimensionally stable, low density water-blown rigid foams and the processes related thereto The present invention relates to polyol compositions which can be used to produce dimensionally stable, low density water-blown rigid foams which have acceptable compressive strengths and acceptable k-factors. In one embodiment of the present invention, the polyol c... | 11/27/2007 |
| 7262227 | Process for producing synthetic resin foam, blowing agent and premix The present invention relates to a process for producing a synthetic resin foam which comprises reacting at least one polyol with at least one polyisocyanate compound in the presence of an organic blowing agent, wherein the organic blowing agent is a blowing agent f... | 08/28/2007 |
| 7202284 | Foamed thermoplastic polyurethanes 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. ... | 04/10/2007 |
| 7183330 | Silicone surfactants for rigid polyurethane foam made with hydrocarbon blowing agents A method for making a rigid polyurethane foam by reacting a polyisocyanate and a polyol in the presence of a urethane catalyst, a blowing agent and a silicone surfactant characterized by employing a blowing agent comprising a C4 or C5 hydrocarbon, or mixtures thereo... | 02/27/2007 |
| 7160930 | Water blown polyurethane spray foam system A composition and a method for producing primarily water blown polyurethane foams is provided. The composition uses isocyanate ratios greater than conventional foam system to provide a water blown polyurethane foam suitable for a wide variety of applications includi... | 01/09/2007 |
| 7141613 | Flame resistant rigid foams and formulations for the production thereof The invention relates to flame resistant rigid foams and formulations useful for the production thereof. The polyol formulation must include at least one substance which is inert with respect to isocyanates, does not deplete the ozone layer and has a boiling point b... | 11/28/2006 |
| 7138077 | Process and installation for the production of foam in a continuous slabstock foam process The invention relates to an installation and a process for the production of foam in a continuous block foam process in which the height of a foam-forming mixture along a conveyor is measured and a correcting variable as a function of deviation of the actual height ... | 11/21/2006 |
| 7084230 | Oxylated vegetable-based polyol having increased functionality and urethane materials formed using the polyol The present invention generally includes material comprising the reaction product of an A-side comprising an isocyanate and a B-side comprising a crosslinker, a catalyst, and a modified vegetable oil. The present invention also generally includes a material comprisi... | 08/01/2006 |
| 7008974 | Composition for preparing rigid polyurethane foam having good demolding property Disclosed is a composition for preparing a rigid polyurethane foam having a good demolding property by defining polyol component and catalyst component. The polyol component comprises 40˜60 wt. % of polyol obtained by polymerization with an organic oxide using sorb... | 03/07/2006 |
| 7005458 | Static dissipative polyurethane foams 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 wei... | 02/28/2006 |
| 6989406 | Polyurea polyrethanes having improved physical properties A process for preparing oil and petroleum-resistant cellular to solid (polyurea)polyurethanes (PURS) with improved physical properties in which a polyether polyol component having a number average molecular weight of from 1000 to 8000 and a polyester polyol componen... | 01/24/2006 |
| 6960618 | Preparation method for rigid polyurethane foam The present invention relates to a preparation method for low-density polyurethane foam excelling in the flame retardance and the dimensional stability, wherein rigid polyurethane foam having the average value for the ratio of lengthwise direction diameter/cross dir... | 11/01/2005 |
| 6894083 | Polyurethane foam composition Single component compositions for making a moisture-cured polyurethane foam are disclosed. Foam produced from the compositions of the present invention produce very low foaming pressure due to their 60-95 percent open-cell content. After these compositions are appli... | 05/17/2005 |
| 6878753 | Process for producing polyurethane foam A process for producing a polyurethane foam which comprises mixing a polyol solution comprising 100 parts by weight of a polyester-polyol, 0.1 to 1.8 parts by weight of water and 0.1 to 5 parts by weight of urea, and a catalyst with a polyisocyanate compound and foa... | 04/12/2005 |
| 6872758 | Polyurethane foams and method of manufacture thereof A thermoformable polyurethane foam having excellent compression set resistance, and a thermoformable polyurethane foam having excellent compression set resistance and shape retention under load. In another embodiment, at least one additional layer of a polyurethane ... | 03/29/2005 |
| 6861454 | Raw materials for anti-cracking polyurethane foams and method for preparing the same Raw materials for anti-cracking polyurethane foams comprises: a mixed polyol 100 weight parts; an isocyanate 140˜180 weight parts; a catalyst 1.0˜3.0 weight parts; water 1˜2.5 weight parts; a foam blowing agent 30.0˜35.0 weight parts; and an additive 1.0˜3.0 we... | 03/01/2005 |
| 6849666 | Polyurethanes containing dispersed crystalline polyesters A process is disclosed for producing resilient polyurethane foams by foaming an organic polyisocyanate, an iso-cyanate-reactive compound and a fusible polymer. The improvement in the hardness of the foams is achieved without adversely affecting the other properties ... | 02/01/2005 |
| 6846850 | Rigid polyurethane foams with improved properties In the process of the present invention, an organic polyisocyanate is reacted with a sorbitol-based polyether polyol having a number average molecular weight of from about 400 to about 1500, in the presence of a pentafluoropropane blowing agent, and a catalyst. ... | 01/25/2005 |
| 6833390 | Process for preparing closed-cell water-blown rigid polyurethane foams having improved mechanical properties The present invention is directed to a process for preparing water-blown rigid polyurethane foams having at least an 80% closed-cell content which involves reacting a) at least one polyol mixture which is composed of (i) at least one polymer polyol; (ii) at least on... | 12/21/2004 |
| 6784273 | Biomedical polyurethane, its preparation and use The invention is directed to a novel biomedical polyurethane based on diisocyanatae linked polyester polymer and diol components, said diol component having a uniform block-length. ... | 08/31/2004 |
| 6784220 | Polyurethane foam A process for preparing a polyurethane foam, comprising reacting a polyol having a number-average molecular weight of not less than 1000 and less than 2500 with a polyisocyante compound in the presence of a catalyst and a blowing agent in a mold, to give a molded ar... | 08/31/2004 |
| 6774154 | Semiflexible and flexible polyurethanes foams having low fogging characteristics and improved physical properties Semiflexible and flexible polyurethane foams having significantly reduced fogging and improved physical properties such as tensile strength, useful in the transportation industry, are obtained from a polyurethane foam-forming reaction-mixture containing as a polyest... | 08/10/2004 |
| 6753357 | Rigid foam compositions and method employing methyl formate as a blowing agent A method for producing a rigid, closed-cell polyurethane foam having a free-rise density of from about 1.3 lbs./ft.3 to about 4 lbs./ft.3 and exhibiting a shrinkage of less than 10%, comprises mixing together an isocyanate, a methyl formate blo... | 06/22/2004 |
| 6740686 | Process for the manufacture of polyurethane foam, amine polyesterpolyol used in this process and foam obtained The invention concerns a method for making a polyurethane foam by reacting at least a polyester polyol with at least a polyisocyanate in the presence of a foaming agent and a catalytic agent, such a polyester polyol having been previously obtained by reacting a reac... | 05/25/2004 |
| 6737471 | Polyurethane elastomers which exhibit improved stability to hydrolysis A solid and/or cellular polyurethane elastomers which are produced using polyester polyols are disclosed. The elastomers which exhibit improved stability to hydrolysis are characterized in that their preparation is carried out in the presence of at least one esters ... | 05/18/2004 |
| 6710095 | Polyol containing glycol adduct for use in producing rigid foam A polyol composition containing a polyester polyol, at least 5 weight % of a compatibilizing agent, based on the weight of the polyol and compatibilizing agent, and a hydrocarbon blowing agent. The compatibilizing agent is one or a combination of a benzoate glycol a... | 03/23/2004 |
| 6706774 | Two-component on-site foam system and its use for foaming openings for the purpose of fire protection A two-component on-site foam system for producing an intumescing fire protection foam is described with a density of less than 200 kg/m3 and an increased fire resistance endurance, with a polyol component (A), which contains at least one polyol, one catal... | 03/16/2004 |
| 6696505 | Preparation of polyurethane foams Polyurethane foams are prepared by reacting a) polyisocyanates with b) compounds having at least two hydrogen atoms reactive with isocyanate groups, by a process in which the polyisocyanates a) are aliphatic di- or polyisocyanates and the compounds hav... | 02/24/2004 |
| 6667416 | Method and apparatus for producing polyester polyol, polyester polyol and polyurethane foam To provide a method for producing polyester polyol that can provide a simple process to produce extensively improved production efficiencies and also produce the polyester polyol of stable in quality, an apparatus for producing the polyester polyol produc... | 12/23/2003 |
| 6646020 | Isopropyl chloride with hydrofluorocarbon or hydrofluoroether as foam blowing agents A composition useful as a blowing agent having no flash point or reduced combustibility comprising 2-chloropropane and a gas selected from the group consisting of a fluorohydrocarbon, perfluorocarbons, fluoroethers, hydrofluoropolyethers and mixtures ther... | 11/11/2003 |
| 6638989 | Method of preparing polyurethane-modified polyisocyanurate foam Rigid foams having excellent compression strength, dimensional stability, flame retardance and adhesion are produced by reacting an active hydrogen compound having at least two functionalities with a polyisocyanate compound in the presence of a catalyst a... | 10/28/2003 |
| 6638990 | Flame-laminable polyurethane foams This invention relates to flame-laminable polyurethane block foams having high peel strength, a process for their production and the use thereof for textile lamination.... | 10/28/2003 |
| 6635685 | Rigid polyurethane foam and process for producing the same A process for producing a rigid polyurethane foam provides a rigid polyurethane foam having a closed-cell size of about 80-130 μm and thus, improved heat insulating properties.... | 10/21/2003 |
