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...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7989516 | Plastic composite elements and a process for the production thereof The present invention relates to composite elements containing, as a layer, at least one thermoplastic polymer, adhering to which, as a layer, a polyisocyanate polyaddition product is attached, and a process for the production thereof. ... | 08/02/2011 |
| 7772312 | Reinforced polyurethane-urea elastomers and their use The invention relates to reinforced polyurethane-urea elastomers with a specific urea content and a specific urethane content, to sheet polyurethane moldings with high surface energy and good lacquer adhesion produced therefrom, and to their use. ... | 08/10/2010 |
| 7638197 | Composite elements made from polyurethane materials having surfaces consisting of thermoplastic or metallic layers and a process for their production The present invention relates to composite elements constructed from an outer layer (i), a fiber-reinforced polyurethane (PU) material which contains in-mold release additives as a supporting layer (ii), and optionally, a decorative inner layer (iii). This invention... | 12/29/2009 |
| 7622542 | Plastic moldings from optionally filled polyurethanes and their use The present invention relates to plastic moldings that are prepared from optionally filled polyurethanes. The plastic molding of the present invention exhibit high tenacity, flexural strength and heat stability. This invention also relates to a process for the prepa... | 11/24/2009 |
| 7273656 | Plastic composite elements and a process for the production thereof The invention provides composite elements containing a thermoplastic polymer layer, adhering to a layer comprising the reaction product of a reaction mixture containing a prepolymer containing isocyanate groups produced by the reaction of at least one isocyanate and... | 09/25/2007 |
| 7087657 | Stable polyol dispersions, polyurethane moldings produced therefrom, and their use The present invention relates to polyol dispersions with long-term stability, to cellular polyurethane moldings produced therewith, to processes for their preparation and to their use. ... | 08/08/2006 |
| 6881771 | Process for producing press molded materials Composite materials are made by press molding a lignocellulose-containing materials glued with a specified type of binder in which the cold bonding strength of the molded lignocellulose-containing material is increased. ... | 04/19/2005 |
| 6761953 | Laminated parts made of outer layers and polyurethane sandwich materials and their production The invention relates to laminated parts comprising outer layers and polyurethane sandwich materials, and to a method of producing these laminated parts and to their use in the automotive industry. ... | 07/13/2004 |
| 6759363 | Activators for the production of polyurethane foams Activators with reduced volatility that are liquid at room temperature are obtained as the reaction product of (A) a secondary amine or primary alcohol having at least one tertiary amine group, (B) a polyisocyanate of the diphenylmethane series having a functionalit... | 07/06/2004 |
| 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 |
| 6632851 | 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.... | 10/14/2003 |
| 6566482 | Process for the preparation of polyurethane elastomers with a high heat distortion temperature Polyurethane elastomers are produced by reacting a polyether and/or polyester polyol having a starter functionality of at least 2 with an NCO-terminated prepolymer produced with a polyether and/or polyester polyol having a starter functionality of at leas... | 05/20/2003 |
| 6471905 | Internal release agents for producing polyurethane moulded bodies The present invention relates to improved internal mould release agents based on particular ammonium or metal salts of phosphoric acid esters, ammonium salts of carboxylic acids and/or ammonium or metal salts of sulfonic acids for producing cellular or co... | 10/29/2002 |
| 6235799 | Method for producing soft to medium-hard structural polyurethane foams The invention provides a process for preparing flexible to semi-rigid polyurethane moulded items with compacted edge zones with given hardness and a much more flexible cellular core, so-called integral foams, in which physical blowing agents from the set ... | 05/22/2001 |
| 6100309 | Process for preparing elastic polyurethane slabstock foams A present invention relates to a process for preparing elastic, flexible slabstock foams by reacting polyisocyanates with at least one polyol having a molecular weight from 2,000 to 10,000, having a functionality of 2 to 4, which have at least two hydroge... | 08/08/2000 |
| 6007649 | Method of producing press-moulding materials with polyisocyanate binders and using latent, heat-activable catalysts A process is described for producing pressed materials, particularly wood particle boards, by the hot compaction of raw materials containing lignocellulose which are mixed and/or impregnated with polyisocyanates as binders, with the use of latent, thermal... | 12/28/1999 |
| 5977198 | Process for the production of resilient, flexible polyurethane foams This invention relates to a process for the production of resilient, flexible polyurethane foams. This process comprises reacting A) polyisocyanates or polyisocyanate prepolymers, B) compounds having at least two isocyanate-reactive hydrogen atoms and a molecu... | 11/02/1999 |
| 5863961 | Flexible polyurethane foams and a process for the production thereof Process for the production of flexible polyurethane foams by reacting A) polyisocyanates or polyisocyanate prepolymers, with B) a specific blend of isocyanate-reactive compounds, C) water, D) optionally, blowing agents, E) optionally, activators, stabilizers and other p... | 01/26/1999 |
| 5814676 | Flexible polyurethane foams and a process for the production thereof Process for the production of flexible polyurethane foams by reacting A) polyisocyanates or polyisocyanate prepolymers, with B) a specific blend of isocyanate-reactive compounds, C) water, D) optionally, blowing agents, E) optionally, activators, stabilizers and other p... | 09/29/1998 |
| 5760098 | Process for producing low-emission polyurethane moldings and composite bodies and their use A process is described for producing polyurethane moldings by the reaction of compounds of molecular weight 400 to 10,000 which contain at least 2 hydrogen atoms capable of reacting with isocyanates, and optionally chain extenders of molecular weight 32 t... | 06/02/1998 |
| 5587117 | Process for insulating pipes using polyurethane rigid foams by the rotational casting process The invention relates to a process for insulating pipes by applying a rigid polyurethane foam as an insulating layer and optionally an external top coating by the rotational casting process. The rigid polyurethane foam is obtained by a) an aromatic polyis... | 12/24/1996 |
| 5504179 | Process for the manufacture of flexible molded parts The present invention is directed to a RIM process wherein an isocyanate-terminated prepolymer is reacted with one or more isocyanate-reactive components which contian inorganic fillers. The improvement resides in including an acidc group containing compo... | 04/02/1996 |
| 5464880 | Process for the CFC-free production of cellular polyurethane molded parts A process for the CFC-free production of cellular polyurethane molded parts/articles with solid surfaces by reacting a reaction mixture of per se known starting materials in sealed molds, to yield polyurethane foams. Carbamates obtainable from aliphatic a... | 11/07/1995 |
| 5459171 | Core discoloration preventing agents in the production of isocyanate-based foams Compounds of the general formula ##STR1## in which n represents an integer from 2 to 6, preferably 2 or 3, m represents an integer from 1 to 6, preferably 1 to 3, R represents --C(CH3)3 and X represents hydrogen or the group ##STR2##... | 10/17/1995 |
| 5426124 | Process for the production of moldings of polyurethane foams The present invention relates to a process for the production of polyurethane foam moldings having a compact surface skin and a density of at least 150 kg/m3 comprising foaming a polyurethane-forming starting mixture inside a mold. The starting... | 06/20/1995 |
| 5395888 | Thermoplastically processible poly-vinylarene/polyurethane block copolymers A substantially linear poly-vinylarene/polyurethane block copolymer prepared by reacting (1) a difunctional poly-vinylarene which is produced by anionic polymerization and which contains isocyanate-reactive groups, (2) a diisocyanate or an isocyanate prep... | 03/07/1995 |
| 5242977 | Poly--olefin/polyurethane block copolymers, processes for their production and their use The present invention is directed to poly--olefin/polyurethane block copolymers which are prepared by reacting A) isocyanate-reactive functionalized poly-(C2 -C10 --olefins) having a number average molecular weight Mw | 09/07/1993 |
| 5158987 | Process for the preparation of highly elastic polyurethane flexible foams and their use as upholstery material The invention relates to a process for preparing highly elastic polyurethane flexible foams by the reaction of (a) polyisocyanates with (b) polyethers having a molecule weight of from 400 to 10,000 and containing at least two isocyanate-reactive hydrogen atoms... | 10/27/1992 |
| 5104905 | Process for the preparation of polyurethane foams The present invention relates to a process for the preparation of polyurethane foams comprising reacting polyisocyanates with compounds having a molecular weight of from 400 to 10,000 and containing at least two isocyanate-reactive hydrogen atoms, in the ... | 04/14/1992 |
| 5104906 | Process for the preparation of polyurethane foams The present invention relates to a process for the preparation of polyurethane foams in which polyisocyanates are reacted with compounds having a molecular weight of from 400 to 10,000 and containing at least two isocyanate-reactive hydrogen atoms, in the... | 04/14/1992 |
| 5023280 | Process for the production of polyurethane foams The present invention relates to a process for the production of polyurethane foams by the reaction of 1) polyisocyanates with 2) polyesters, polycarbonates, polylactones, or polyamides having a molecular weight range of about 400 to about 10,000 and cont... | 06/11/1991 |
| 5017623 | Process for the preparation of polyurethane foams This invention relates to a process for the preparation of polyurethane foams comprising reacting polyisocyanates with compounds containing at least two active hydrogen atoms and having a molecular weight of 400 to 10,000 selected from polymer-modified po... | 05/21/1991 |
| 4977194 | Process for the preparation of polyurethane foams The present invention relates to a process for the preparation of polyurethane foams comprising reacting polyisocyanates with dispersions of (i) polymer-containing relatively high molecular weight hydroxyl compounds that are prepared by reaction of mono- ... | 12/11/1990 |
| 4970243 | Process for the production of flexible slabstock polyurethane foams This invention relates to a process for the production of elastic, open-cell flexible slabstock polyurethane foams comprising reacting at an isocyanate index less than about 80 one or more polyisocyanates selected from the group tolylene diisocyanates, he... | 11/13/1990 |
| 4874797 | Oligourea polyols, polyether polyols produced from them and the use of these polyols in the isocyanate polyaddition process The present invention is directed to novel polyhydroxyalkyl oligoureas prepared by condensing urea derivatives with polyamides. The present invention is further directed to polyether polyols prepared by alkoxylating these polyhydroxyalkyl oligoureas. Fina... | 10/17/1989 |
| 4797430 | Amine-modified polyurethane (urea) foams and a process for their production Amine-modified polyurethane (urea) foams are made by reacting a polyisocyanate with a relatively high molecular weight isocyanate-reactive compound in the presence of a difunctional and/or polyfunctional amine corresponding to the formula(e) ##STR1##... | 01/10/1989 |
| 4775558 | Polyurethanes prepared or combined with another material and a process for their manufacture Polyurethanes which have been prepared or combined with another material are made by combining or applying a polyurethane-forming reaction mixture or polyurethane to another material such as a PVC foil or textile. The polyurethane-forming mixture or polyu... | 10/04/1988 |
| 4766172 | Mold release composition, mixtures containing this mold release composition, a process for the production of molded articles and the molded articles obtained by this process The present invention is directed to mold release compositions based on a solution which is liquid at room temperature and contains (i) at least one zinc salt of a straight or branched chain, saturated or unsaturated aliphatic carboxylic acid containing 8 to 2... | 08/23/1988 |
| 4761307 | Process for the production of optionally foamed polyurethanes which are combined or fabricated with another material The present invention is directed to a process for the production of optionally foamed polyurethanes which are combined or fabricated with another material, comprising reacting compounds with molecular weights from 400 to 10,000 containing at least 2 isoc... | 08/02/1988 |
| 4758601 | Process for the production of polysiloxane ionomers, polysiloxane ionomers and their use for the production of cellular polyurethane elastomers The present invention is directed to a process for the production of waterproof, fine-cell polyurethane elastomers having a density of about 300 to 800 kg/m3 by reacting (a) organic polyisocyanates, (b) polyhydroxyl compounds having a molecular weig... | 07/19/1988 |
