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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 |
| 5183847 | Modified carboxylated rosin polyamide/acrylics Alkali-soluble resins, their preparation and use are disclosed herein. The resins are carboxylated polyamide/acrylic resins and are synthesized in a two-step fusion process in which a polyamide is first condensed with a carboxylated rosin and this interme... | 02/02/1993 |
| 5079275 | Polyurea resins from poly(aminoaromatic) compounds Disclosed is a class of poly(aminoaromatic) compounds (I) obtained by capping polymeric polyols or polythiols iwth aromatic amine groups wherein the latter groups are linked by --O-- or --S-- to the polyol (polythiol) residues. Also disclosed are the prec... | 01/07/1992 |
| 5068135 | Aqueous dispersions of fluorinated polyurethanes and their use for textile coatings Aqueous dispersions of fluorinated polyurethanes obtained by the reaction of an organic diisocyanate with a mixture of diols containing ionizable groups and macroglycols comprising polyols and at least 1% by weight of one or more hydroxy- and/or carboxy-c... | 11/26/1991 |
| 5066762 | Thermoplastic polyurethane resin from p-phenylene diisocyanate, a poly(hexamethylene carbonate) polyol, and a short chain polyol A thermoplastic polyurethane resin is prepared by the reaction of (A) p-phenylene diisocyanate, (B) a hydroxyl terminated poly(hexamethylene carbonate) polyol having a molecular weight of 850 to 5000 and (C) a short chain polyol having 2 to 10 carbon atoms as the c... | 11/19/1991 |
| 5066711 | Wetness indicating hot-melt adhesives A wetness indicating hot-melt adhesive which changes color in response to the presence of moisture is disclosed, which contains 20 to 70 wt. % of polymer, about 28 to 10 wt. % of which is water sensitive polymer; 25 to 60% of organic acid which is selecte... | 11/19/1991 |
| 5064872 | Polyisocyanurate foam with chloropropane blowing agent A polyisocyanurate foam or a with polyurethane modified polyisocyanurate foam having a mainly closed cell structure and also a method for preparing this foam, the latter comprising closed cells wherein chloropropane, preferably 2-chloropropane, whether or... | 11/12/1991 |
| 5064870 | Method for the production of highly elastic, cold-curing polyurethane foams In a method for the preparation of highly elastic, cold curing polyurethane foams, equilibrated organofunctional polysiloxanes of the average general formula ##STR1## wherein R1 is methyl or R2, R2 is chloropropyl, n ... | 11/12/1991 |
| 5055545 | Urethane-rubber adhesives based on azoester prepolymers and derivatives thereof A composite comprises a coating which is adhered to an unsaturated usually cured elastomer utilizing a rubber-urethane adhesive having azoeneophile functionalities such as a dihydrocarbylazodicarboxylate, a dihydrocarbylazodicarboxamide, a dihydrocarbylaz... | 10/08/1991 |
| 5051495 | Production and/or handling of aryl polyethers and thioethers polymers In making polyarylethersulphones or polyaryletherketones or their thioanalogues by reaction of phenols with aromatic halogen compounds, raw polycondensation product is freed of alkali halide by adjusting its composition and/or temperature so that it disso... | 09/24/1991 |
| 5049648 | Thermoplastic copolyester elastomer binder A copolyester of long chain and short chain ester units, said long chain ester units being represented by the structure: ##STR1## and said short chain ester units being represented by the structure: ##STR2## wherein G is a divalent radical remai... | 09/17/1991 |
| 5047493 | Cationic paint binders based on polyether urethanes and process for preparation thereof Cationic paint binders based on polyether urethanes are formed by selective reaction of one NCO-group of a diisocyanate which contains NCO-groups of different reactivities with the primary hydroxyl groups of a polyhydroxypolyether in the presence of 1,4-d... | 09/10/1991 |
| 5045226 | Polyisocyanate preparations containing latent tin catalysts and a process for their preparation Polyisocyanate preparations containing latent tin catalysts are made from an organic polyisocyanate and a reaction product of a sulfonyl isocyanate and an organic tin catalyst in which at least one tin-oxygen bond is present. The organic tin catalyst pref... | 09/03/1991 |
| 5043379 | Plastisol composition A plastisol composition containing a vinyl chloride type polymer, a plasticizer, an adhesiveness-improving agent and a thermal dissociation-promoting agent, wherein the adhesiveness-improving agent is an aromatic diisocyanate polymer randomly blocked with... | 08/27/1991 |
| 5043098 | A non-ionic dispersing agent A nonionic dispersing agent suitable for use in the production of aqueous polyurethane dispersions, said agent having the formula: ##STR1## wherein R1 represents a monovalent hydrocarbon radical containing 1-12 carbon atoms; R2 ... | 08/27/1991 |
| 5043092 | Process for the production of polyisocyanate mixtures containing uretdione and isocyanurate groups The present invention is directed to a process for the production of polyisocyanate mixtures containing isocyanurate groups and uretdione groups in a molar ratio of about 1:9 to 9:1 by oligomerizing a portion of the isocyanate groups of hexamethylene diis... | 08/27/1991 |
| 5043381 | Aqueous dispersions of a nonionic, water dispersible polyurethane having pendent polyoxyethylene chains An aqueous dispersion of a nonionic water-dispersible polyurethane having pendent polyoxyethylene chains and one crosslink per 3,000 to 100,000 atomic weight units. The dispersions are useful as coating compositions.... | 08/27/1991 |
| 5041494 | Aqueous solutions or dispersions of polyurethanes, a process for their preparation and their use in coating compositions The present invention is directed to aqueous solutions or dispersions of cationically modified polyurethanes, characterized in that the dissolved or dispersed polyurethanes (i) contain about 2 to 200 milliequivalents of incorporated ammonium groups per 10... | 08/20/1991 |
| 5039775 | Process for producing polyurea resin A process for producing polyurea resin in which an amine compound containing aromatic polyamine and specific aminobenzoate derivative and polyisocyanate are reacted. The polyurea resin is decreased in temperature dependence and improved in hardness, stren... | 08/13/1991 |
| 5039726 | Alkyl (C12-C22) esters of rosin acid The present invention relates to alkyl (C12 -C22) esters of rosin acids which are useful as a total or partial replacement for extender or processing oil in rubber formulations. Addition of the alkyl (C12 -C22) ... | 08/13/1991 |
| 5039739 | Aqueous dispersion of a polyurethane having pendent fluoroalkyl groups An aqueous dispersion of a water-dispersible polyurethane having pendent fluoroalkyl groups, said polyurethane being the product of chain extending, in aqueous medium, a water-dispersible, isocyanate-terminated polyurethane prepolymer having pendent fluor... | 08/13/1991 |
| 5037956 | Process for the preparation of the hydroxydiphenylamine ester of rosin acid The present invention relates to the preparation of the p-hydroxydiphenylamine ester of rosin acid. The process involves first reacting hydroquinone and aniline in the presence of a bentonite catalyst to form a reaction mixture containing p-hydroxydipheny... | 08/06/1991 |
| 5037862 | Polyamide-imide resin pastes Disclosed is a polyamide-imide resin paste which comprises polyamide-imide resin solution dissolved in a non-nitrogen-containing solvent, wherein resin fine particles are dispersed in the solution in an amount of 1 to 50% by weight relative to the resulti... | 08/06/1991 |
| 5034426 | Aromatic diamine catalytic chain extenders The present invention relates to a process for the production of polyurethanes wherein a tertiary amine functionality is incorporated into the side chain of an aromatic diamine, preferably a diaminobenzamide, to form a catalytic polyurethane chain extende... | 07/23/1991 |
| 5032665 | Method and device for the manufacture of a high optical quality transparent plastic sheet A high optical quality polyurethane layer is manufactured by reactive pouring or reactive spraying of a reaction mixture comprising an aliphatic isocyanate component and a polyol component followed by a polymerization comprising the passage of the layer t... | 07/16/1991 |
| 5032666 | Amine rich fluorinated polyurethaneureas and their use in a method to immobilize an antithrombogenic agent on a device surface A thermoplastic polyurethaneurea having free amino groups is the reaction product of a diisocyanate, a fluorinated polyol, a non-fluorinated polyol and a polyamine. The invention includes a shaped polymeric support structure having the thermoplastic polyu... | 07/16/1991 |
| 5032623 | Rigid foams using CHClF2 as a blowing agent A method for preparation of rigid foam disclosed. The method comprises mixing at least two components to form a reaction mixture. The reaction mixture comprises isocyanate, up to about 20% by weight CHClF2, up to about 2% by weight of water, an... | 07/16/1991 |
| 5028684 | Process for the production of molded polyurethane bodies The present invention is directed to a process for the preparation of molded polyurethane articles having densities of about 0.8 to 1.4 g/cm3 and a flex moduli according to DIN 53,457 of at least about 1800 N/mm2 by reacting accordin... | 07/02/1991 |
| 5028355 | Conductive polyurethane foam containing picric acid and analog thereof An electrically conductive polyurethane foam product is prepared by the in situ combination of polyurethane-forming reactants and an effective amount of a charge transfer agent selected from the group consisting of tetracyanoethylene (TCNE), picric acid a... | 07/02/1991 |
| 5026754 | Resinous binders comprising a metal rosin resinate and a pendant tertiary amine polymer A resinous binder is disclosed which is composed of a metal rosin resinate and a dilution increasing effective amount of a pendant tertiary amine polymer type resin having greater than 50,000 weight average molecular weight. Also disclosed is a gravure pr... | 06/25/1991 |
| 5026753 | Resinous binders comprising a metal rosin resinate and a carboxylated polystyrene resin A resinous binder is disclosed which is composed of a metal rosin resinate and a dilution increasing effective amount of polystyrene type resin having greater than 50,000 weight average molecular weight and an acid number less than 200. Also disclosed is ... | 06/25/1991 |
| 5023319 | Stabilization of modified rosin This invention relates to a method for treating polymerized rosin to decrease its tendency to oxidize comprising heating the polymerized rosin to an elevated temperature in the presence of an effective amount of one or more disproportionating agents. This... | 06/11/1991 |
| 5023309 | Water dispersible, modified polyurethane thickener with improved high shear viscosity in aqueous systems A water dispersible, modified polyurethane which is the reaction product of polyisocyanate, polyether polyol, modifying agent containing at least one pendant hydrophobic group and at least two active hydrogen moieties and capping agent. The modified polyu... | 06/11/1991 |
| 5021534 | Thermosetting urethane elastomer A thermosetting urethane elastomer is prepared from: (a) a prepolymer having isocyanate groups at terminal ends obtained by allowing p-phenylene diisocyanate to react with a compound having 2 or more active hydrogens, and (b) curing agents of 1,4-bis(2-hydroxy... | 06/04/1991 |
| 5021507 | Arcylic modified reactive urethane hot melt adhesive compositions The addition to urethane prepolymers of low molecular weight polymers formed from ethylenically unsaturated monomers which do not contain active hydrogen provides a hot melt adhesive which can be readily coated at a viscosity of 3000 to 50,000 cps. at 120... | 06/04/1991 |
| 5019622 | Rosin modified styrene acrylic resin A rosin modified acrylic resin for use in a toner composition is provided. The resin is prepared by steam stripping a mixture of solution polymerized styrene-acrylic copolymer rosin, and a suitable solvent, such as toluene or xylene, followed by cooling a... | 05/28/1991 |
| 5019167 | Stabilized rosin esters and hot melt adhesives containing them Improved rosin ester compositions are provided having diminished tendency toward hazing concomitant with good viscosity stability when employed in adhesive systems such as hot melt adhesive systems. Addition of zinc composition to rosin ester formulations... | 05/28/1991 |
| 5019636 | Polyester chain-extended vinyl ether urethane oligomers A vinyl ether oligomer especially useful for coatings is prepared by reacting an hydroxyl-terminated polyester, a diisocyanate, and a hydroxy monovinyl ether having formulas as defined herein.... | 05/28/1991 |
| 5017664 | Biocompatible polyurethane devices wherein polyurethane is modified with lower alkyl sulfonate and lower alkyl carboxylate Modified-polyurethane block copolymers and devices formed therefrom demonstrate excellent biocompatibilty and improved physical and mechanical properties. In a preferred embodiment, from about 5 to about 25 percent of urethane hydrogen atoms are replaced ... | 05/21/1991 |
| 5017645 | Photoresponsive imaging members with protective copolyurethane overcoatings An imaging member comprised of a photoconductive layer, and a protective copolyurethane overcoating of the formula ##STR1## wherein A is a trivalent group; A' is a bivalent group; R is selected from the group consisting of alkylene, substituted alkyl... | 05/21/1991 |
| 5011908 | Polymer polyol compositions and their use in the preparation of polyurethane foams Polymer polyol compositions are provided which are useful for the production of flexible polyurethane foams. The polymer polyol compositions are composed of (1) a high functionality polyol, (2) a subsidiary polyalkylene oxide high in polyoxyethylene conte... | 04/30/1991 |
