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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 7884169 | Thermoplastic cellulose composition, method for producing the same, and molded product using the same A method for producing a thermoplastic cellulose composition according to the present invention includes a process of ring-opening polymerization of cyclic ester with a cellulosic material or oligoesterified cellulose after mechanochemical pretreatment or during mec... | 02/08/2011 |
| 7264913 | Antireflective compositions for photoresists The present invention relates to a novel antireflective coating composition comprising a polymer, a crosslinking agent and an acid generator. The present invention further relates to a process for using the novel composition, particularly at 193 nm. The polymer of t... | 09/04/2007 |
| 7199205 | Organopolysiloxane-modified polysaccharide and process for producing the same An organopolysiloxane-modified polysaccharide prepared by esterification reacting (A) an organopolysiloxane having residual carboxylic anhydride groups and (B) a polysaccharide having hydroxyl groups, wherein the organopolysiloxane is bonded to the polysaccharide th... | 04/03/2007 |
| 7153821 | Use of graft polymers in fabric cleaning A laundry cleaning composition comprises a graft polysaccharide polymer benefit agent capable of imparting a benefit such as soil release or fabric care, and at least one additional laundry cleaning ingredient. ... | 12/26/2006 |
| 7041730 | Polymers and their synthesis The invention relates to polysaccharide graft polymers useful for incorporation as benefit agents in laundry detergent and fabric treatment compositions, and their preparation. The invention also relates to substituted polysaccharides useful as macroinitiator interm... | 05/09/2006 |
| 7030187 | Cellulose copolymers that modify fibers and surfaces and methods of making same Cellulosic polymers, copolymers and grafts, are disclosed that adhere to fibers and surfaces during an aqueous treatment process. The cellulosic polymers having grafts and/or co-blocks are prepared using living-type free radical polymerization techniques, which prov... | 04/18/2006 |
| 6828402 | Resin composite, method for producing the same and articles consisting of the same A resin composite characterized in that it includes: a polymer compound which is an alternating copolymer of a saccharic compound and an aliphatic compound and has a three-dimensional network; and a plasticizer contained in the gap in the three-dimensional network o... | 12/07/2004 |
| 6517933 | Hybrid polymer materials The invention is directed to a hybrid polymer material or system that combines naturally occurring building blocks with synthetic building blocks. The sets of naturally occurring and synthetic building blocks are mixed and joined on a molecular or nanosco... | 02/11/2003 |
| 6509440 | ALIPHATIC COPOLYMER, PRODUCTION PROCESS, ALIPHATIC POLYESTER RESIN COMPOSITION, VARIOUS USES, COATING COMPOSITION, AND AGRICULTURAL OR HORTICULTURAL PARTICULATE COMPOSITION COMPRISING DEGRADABLE COATING FILM In the present invention, there are obtained aliphatic polyesters having a controlled thermal decomposing property, hydrolizability, and biodegradability, in which OH terminals and COOH terminals are decreased to 50% and 30%, respectively, through a ring-... | 01/21/2003 |
| 6504003 | Synthesis of higher polyol fatty acid polyesters by transesterification A process for synthesizing polyol fatty acid polyesters comprising the steps of (1) mixing ingredients comprising (a) unesterified first polyol having hydroxyl groups, (b) second polyol esterified with fatty acids, (c) basic catalyst, and (d) emulsifying ... | 01/07/2003 |
| 6441057 | Optical sensor membranes having improved barrier properties The present invention discloses novel polymer compositions comprising cellulose acrylamide, acrylamide and/or a fluorescent indicator species, and membranes made with these compositions. Optical pH sensors for monitoring the pH in a fluid sample, and meth... | 08/27/2002 |
| 6355734 | Resin-fortified sugar-based vinyl emulsion copolymers and methods of preparing the same A method of preparing a resin-fortified polymer emulsion is disclosed. In one embodiment, the method comprises polymerizing at least one monomer in the presence of a surfactant, an initiator, a resin and sugar-based vinyl monomer under emulsion polymeriza... | 03/12/2002 |
| 6255427 | Amphoteric polymer dispersion An amphoteric polymer dispersion obtained in the presence of at least one of starch or a starch derivative by a two-stage polymerization using anionic and cationic monomers is useful as a sizing agent for paper products, as a coating for various substrate... | 07/03/2001 |
| 6252027 | Thermally formed article, production process of thermally formed article, toner cartridge, and recording medium The invention provides a thermally formed article having biodegradability, recycling ability and thermoplasticity. The thermally formed article comprises a sugar polymer represented by the following general formula ##STR1## wherein G is a residue of a mon... | 06/26/2001 |
| 6211315 | Lewis acid-catalyzed polymerization of biological oils and resulting polymeric materials Biological oils, conjugated biological oils, and metathesized or cometathesized biological oils are polymerized or co-polymerized faith divinylbenzene, norboradiene and dicyclopentadiene using a BF3.OEt.sub.2 initiator to provide plastics from ... | 04/03/2001 |
| 6201070 | Method for enhancing the toughness of cycloaliphatic epoxide-based coatings Methods are disclosed for enhancing the toughness, e.g., resistance to cracking upon flexation, of coatings made from cycloaliphatic epoxide derivatives wherein the cycloaliphatic epoxide derivative is a cycloaliphatic epoxide ester of a hydroxy-functiona... | 03/13/2001 |
| 6107432 | Water-swellable, hydrophilic polymer compositions The present invention relates to water-swellable, hydrophilic polymer compositions which can be prepared by free-radical (co)polymerization of one or more hydrophilic monomers in the presence of starch and/or chemically modified starch, wherein a free-rad... | 08/22/2000 |
| 6011092 | Thermoplasticized starch component and process for the preparation thereof The invention relates to a process for thermoplasticizing starch, a melt-processible polymer composition, which contains a starch-based component and a thermoplastisized polymer component, and a method for preparating such a composition. According to the ... | 01/04/2000 |
| 5981743 | Cyclic ester ring-opened oligomers and methods of preparation An oligomer composed of a carbohydrate head group and an oligomer chain is disclosed. Methods for increasing the oligomerization rates of lactones and cyclic carbonates are also disclosed.... | 11/09/1999 |
| 5981738 | UV curable cellulose esters The present invention relates to a modified cellulose ester containing unsaturated pendent groups which can be prepared by reacting a cellulose ester containing residual hydroxyl groups with, for example, maleic anhydride in acetic acid solvent with sodiu... | 11/09/1999 |
| 5936005 | Crosslinkable composition for coating substrates, coating process employing this composition, and substrates thus coated A curable composition comprising (A) a modified copolymer which is a partial ester of a styrene-carboxylic anhydride copolymer, a hydroxyalkyl (meth)acrylate and, if required, a monovalent alcohol; (B) at least one diluent for the modified copolymer; (C) ... | 08/10/1999 |
| 5932539 | Biodegradable polymer matrix for tissue repair Novel biodegradable amphiphilic polymers are described. Preferred polymers have a lipophilic binding moiety coupled covalently to a hydrophilic tissue adhesion moiety through a divalent linker comprising a natural metabolite or a polymer biodegradable int... | 08/03/1999 |
| 5925722 | Amphoteric and anionic polymer dispersions, process for their preparation and use thereof A process for producing an amphoteric aqueous polymer dispersion by two-step radical copolymerization includes (a) decomposing a starch by treatment with an enzyme or acid hydrolysis to provide a starch solution composed of decomposed starch and/or deriva... | 07/20/1999 |
| 5914381 | Degradable polymer and preparation process of the same A degradable polymer and a process for preparing the degradable polymer which has a structure resulting from combination of a star-shaped polymer comprising a polyfunctional base compound of polycarboxylic acid having three or more carboxyl groups and/or ... | 06/22/1999 |
| 5854368 | Adjuvant for pharmaceutical preparations A polyester represented by the following general formula (I) and a copolymer which comprises two structural units represented by the following general formulae (I') and (II). ##STR1## and a coating material for use in large intestine-selective drug r... | 12/29/1998 |
| 5840881 | Composition containing a water-insoluble or slightly water-soluble compound with enhanced water-solubility A composition is disclosed comprising a water-insoluble or slightly water-soluble compound and a branched cyclodextrin-carboxylic acid. The branched cyclodextrin-carboxylic acid significantly increases the water-solubility of the compound. Also disclosed ... | 11/24/1998 |
| 5834556 | Graft copolymer of polycationic species and water-soluble polymers, and uses therefor In accordance with the present invention, there are provided methods to render cells non-adhesive and/or non-immunogenic with respect to macromolecules typically encountered in culture media or in physiological media.... | 11/10/1998 |
| 5817728 | Preparation of degradable copolymers A preparation process of a degradable copolymer comprising carrying out dehydration polycondensation of polysaccharide (A) with one or more compounds (B) selected from the group consisting of: (b1) hydroxycarboxylic acid, (b2) polyhydroxycarboxylic acid, (b3) ... | 10/06/1998 |
| 5763557 | Grafting of a polymer onto cellophane by ultrasonic induced free radical polymerization The invention relates to the chemical bonding of a polymer/or polymers onto non-metallic substrates such as cellophane by ultrasonic techniques. The cellophane film is preactivated by contacting with silver nitrate solution followed by treatment with pota... | 06/09/1998 |
| 5760154 | Graft copolymers of unsaturated monomers and polyhydroxy compounds, a process for their production and their use The present invention relates to water-soluble, acid groups-containing graft copolymers which are at least partially biodegradable and are based on polyhydroxy compounds and monoethylenically unsaturated carboxylic acids, sulfonic acids and/or phosphonic ... | 06/02/1998 |
| 5741901 | UV curable cellulose esters The present invention relates to a modified cellulose ester containing unsaturated pendent groups which can be prepared by reacting a cellulose ester containing residual hydroxyl groups with, for example, maleic anhydride in acetic acid solvent with sodiu... | 04/21/1998 |
| 5733994 | Biodegradable, water-resistant polymer material A novel biodegradable, water-resistant polymer material which can be produced with defined material properties is suggested, in particular in the form of foils, films, strips, masses, molded articles or the like, this material consisting essentially of a ... | 03/31/1998 |
| 5723151 | Cellulose acetate phthalate enteric coating compositions Provided are enteric coating compositions which utilize a low viscosity cellulose acetate phthalate polymer as a film former. The cellulose acetate phthalates have an inherent viscosity of about 0.2 to 0.6 dL/g and phthalyl values of from 30 to 40% and ca... | 03/03/1998 |
| 5665816 | Aqueous dispersions for adhesives Aqueous dispersions prepared by polymerization of vinyl acetate, ethylene, and comonomers selected from the group consisting of vinyl esters of aliphatic (C3 -C18)-carboxylic acids, acrylic acid esters, methacrylic acid esters, and m... | 09/09/1997 |
| 5644012 | Adjuvant for pharmaceutical preparations A polyester represented by the following general formula (I) and a copolymer which comprises two structural units represented by the following general formulae (I') and (II). ##STR1## and a coating material for use in large intestine-selective drug r... | 07/01/1997 |
| 5633316 | Surface crosslinked and surfactant coated absorbent resin particles and method of preparation The invention is surface crosslinked particles of water absorbing resin comprising particles of a carboxyl containing water-absorbent resin; wherein the particles of the carboxyl containing water-absorbent resin are crosslinked at or near the particle sur... | 05/27/1997 |
| 5583193 | Polysaccharide graft-polymers and the use in papermaking thereof A process for preparing a modified polysaccharide graft copolymer complex which comprises the steps of: i. subjecting polysaccharide to graft copolymerization with a vinyl monomer; ii. treating the polysaccharide graft copolymer with: a. polyethylene glycol to... | 12/10/1996 |
| 5356634 | Controlled-release delivery system Provided is a controlled-release system for delivery of bioactive materials such as medicaments, cosmetic ingredients and agrichemicals using cellulose acetate succinate or certain blends of cellulose acetate phthalate polymers as enteric coating material... | 10/18/1994 |
| 5278303 | Polymer-supported solution synthesis of oligosaccharides This invention relates to the preparation of oligosaccharides, using polymer supported methodology. By this method, which offers anomeric control, oligosaccharides are produced very rapidly in comparison with known methodologies. Thus, there is disclosed ... | 01/11/1994 |
| 5270421 | Sugar-based polymers A method of making a novel sugar-based polymer is disclosed. A sugar and an organic acid derivative having at least two carboxylate functionalities are mixed in a substantially non-aqueous organic solvent with a hydrolytic enzyme and, thereafter, the resu... | 12/14/1993 |
