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 |
| 8053529 | Catalytic olefin block copolymers with controlled block sequence distribution A process for the polymerization of one or more addition polymerizable monomers and the resulting polymer products, said process comprising: 1) contacting an addition polymerizable monomer or mixture of monomers under addition polymerization conditions in a reactor ... | 11/08/2011 |
| 7368508 | Functional norbornenes and polymeric derivatives and fabrication thereof The present invention relates to novel functional norbornenes as initiators for radical polymerization, its polymer and a process for producing the same. More particularly, the novel functional norbornenes can be selectively polymerized by ring-opening metathesis po... | 05/06/2008 |
| 7368509 | Functional norbornenes and polymeric derivatives and fabrication thereof The present invention relates to novel functional norbornenes as initiators for radical polymerization, its polymer and a process for producing the same. More particularly, the novel functional norbornenes can be selectively polymerized by ring-opening metathesis po... | 05/06/2008 |
| 7285597 | Radical polymerization processes for preparing halogenated polymers, and halogenated polymers Radical polymerization process for the preparation of halogenated polymers employing one or more ethylenically unsaturated monomers, at least one of which is chosen from halogenated monomers, molecular iodine and one or more radical-generating agents chosen from dia... | 10/23/2007 |
| 7247685 | Zero valent metal initiated gas-phase deposition polymerization The present invention relates to a method for preparing polymers by gas-phase deposition polymerization, initiated by a zero valent metal and an initiator. ... | 07/24/2007 |
| 7241837 | Vibration damper composition The present invention has for its object to provide a damping material which, despite a high damping capacity at and around room temperature, has a small temperature dependence of rigidity at and around room temperature and a damping material having hot-melt process... | 07/10/2007 |
| 7230053 | Golf ball A golf ball, typically its core, is manufactured by molding and vulcanizing a rubber composition comprising a base rubber, an unsaturated carboxylic acid or a metal salt thereof, an inorganic filler, an organic peroxide, and an organosulfur compound. The base rubber... | 06/12/2007 |
| 7214640 | Ionic material The present invention relates to a material containing ionic groups, in particular, to the ionic materials that form an ionic pair with a free radical catalyst. Various applications of such materials are also described. Ionic materials can include magnetic particles... | 05/08/2007 |
| 7205359 | Functional norbornenes as initiators for radical polymerization, their polymeric derivatives and a process for producing the same The present invention relates to novel functional norbornenes as initiators for radical polymerization, its polymer and a process for producing the same. More particularly, the novel functional norbornenes can be selectively polymerized by ring-opening metathesis po... | 04/17/2007 |
| 7183358 | Hydrophobically modified polymers Hydrophobically modified polymer compositions contain at least one polymer based on one or more ethylenically unsaturated monomers, in the form of an aqueous polymer dispersions or water-redispersible polymer powder prepared therefrom, further containing, a) one or ... | 02/27/2007 |
| 7169866 | Process for preparing homopolymers, copolymers and/or block copolymers by living polymerization with metallocenes having a donor-acceptor interaction The present invention relates to a process for preparing homopolymers, copolymers and/or block copolymers of 1-olefins by living polymerization, to the use of the homopolymers, copolymers and/or block copolymers obtained for producing high-value materials and to the... | 01/30/2007 |
| 7148290 | Rubber composition for golf ball A rubber composition for a golf ball having excellent rebound characteristics and excellent durability, and showing good workability, which contains a base rubber, a co-crosslinking agent, an organic peroxide and an inorganic filler, wherein the base rubber includes... | 12/12/2006 |
| 7112632 | Process for the preparation of low branch content polybutadiene A process for the preparation of low branch content polybutadiene comprising: (a) a first butadiene polymerisation stage; (b) treatment of the polymer solution obtained upon completion of stage (a) with a coupling ... | 09/26/2006 |
| 7087689 | Method for polymerizing styrene A method of homogeneously polymerizing styrene comprising admixing an ethylenically unsaturated monomer and an initiation system that is soluble in the monomer. This system includes a metal; a peroxide, hydroperoxide or mixture thereof; and a reductant. Under approp... | 08/08/2006 |
| 7074865 | Azaborolyl group 4 metal complexes, catalysts and olefin polymerization process Metal complexes, catalysts derived therefrom, and polymerization processes using the same, characterized by the presence of one or more nitrogen and boron containing, anionic 5-membered cyclic ligand groups, especially 1,2-azaborolyl groups, are disclosed. ... | 07/11/2006 |
| 6960631 | Catalyst composition and process for producing copolymer A method for block copolymerization of a conjugated diene and an aromatic vinyl compound, which comprises the steps of carrying out homopolymerization of the conjugated diene in the presence of a catalyst composition comprising the following components: (A) a metall... | 11/01/2005 |
| 6887944 | Modified polypropylene and process for producing same A modified polypropylene which is a polypropylene having a value of racemic diad fraction [r] in a specific range and modified with a specific compound, e.g., (meth)acrylic acids, and their derivatives or styrene derivatives to have well-balanced properties of affin... | 05/03/2005 |
| 6730744 | Method for copolymerization and resulting copolymers The invention concerns a method for preparing block copolymers comprising steps which consist in: polymerising a first monomer using an organolanthanide catalyst wherein said catalyst in the form of a hydride complex of a trivalent metal from the group of rare earth... | 05/04/2004 |
| 6716927 | Perovskite-type organic/inorganic lamellar polymer Amines having an unsaturated bond can be introduced into the organic layer of organic-inorganic laminar perovskite compounds comprising a metal halide and an organic amine, and the organic layer can be polymerized by applying external energy such as by irradiating w... | 04/06/2004 |
| 6713565 | Golf ball It has been unexpectedly discovered that cis-1,4-polybutadiene that is synthesized utilizing Zeigler-Natta catalyst systems has superior characteristics for utilization in solid golf ball cores if the polymerization is terminated utilizing a carboxylic acid of the s... | 03/30/2004 |
| 6602960 | Polymers and copolymers prepared or modified by using cobalt complexes A polymerization process comprising the steps of admixing a halogen-containing compound, monomer, and a cobalt complex.... | 08/05/2003 |
| 6599996 | Method for (CO)polymerizing polar and non-polar monomers In a process for the transition-metal-catalyzed preparation of polymers having a syndiotactic or predominantly syndiotactic structure from vinylaromatic monomers and a process for preparing block copolymers from vinylaromatic monomers and olefinically uns... | 07/29/2003 |
| 6576722 | Acrylic-halogenated polyolefin copolymer adhesion promoters The present invention is directed to a method for producing a copolymer and a copolymer product of the method. The copolymer is prepared by a controlled radical polymerization process, typically an atom transfer radical polymerization process, in which po... | 06/10/2003 |
| 6486279 | Acid activation of ruthenium metathesis catalysts and living ROMP metathesis polymerization in water Activation of ruthenium based catalyst compounds with acid to improve reaction rates and yields of olefin metathesis reactions, including ROMP, RCM, ADMET and cross-methasis reactions is disclosed. The ruthenium catalyst compounds are ruthenium carbene co... | 11/26/2002 |
| 6462114 | Microgels and process for their preparation A process for forming a microgel which comprises a crosslinked core and a multiplicity of linear polymeric arms attached to the core, wherein the process comprises (a) first forming a halogen atom terminated prepolymer with a weight average molecular weig... | 10/08/2002 |
| 6451958 | Radiation curable acrylate-terminated polymers having polycarbonate repeating units Polymer having repeating polycarbonate moieties of the formula (I) (Acr)y (A)(Q)(PC)[(Q)(PC)]x (Q)(A)(Acr)y (I) wherein (Acr)y (A) is the residue of hydroxyalkyl acrylate or hydroxyalkyl methacrylate having an alkyl moie... | 09/17/2002 |
| 6391978 | Process for the synthesis of hydroxyl-end group functionalized polybutadienes This invention relates to a process for the synthesis and purification of hydroxyl-end group functionalized, linear, non-crosslinked polyolefins without pendant chain branched groups, and specifically to hydroxyl-end group functionalized polybutadienes. T... | 05/21/2002 |
| 6284852 | Acid activation of ruthenium metathesis catalysts and living ROMP metathesis polymerization in water Activation of ruthenium based catalyst compounds with acid to improve reaction rates and yields of olefin metathesis reactions, including ROMP, RCM, ADMET and cross-metathesis reactions is disclosed. The ruthenium catalyst compounds are ruthenium carbene ... | 09/04/2001 |
| 6225414 | Propylene block copolymer A polypropylene block copolymer obtained by producing an ethylene-propylene copolymer moiety as a component A having an ethylene content of 1.5 to 6.0% by weight in an amount of 40 to 85% by weight based on the total weight of components A and B in the ab... | 05/01/2001 |
| 6162882 | Preparation of novel homo- and copolymers using atom transfer radical polymerization The present invention is directed to a process of atom (or group) transfer radical polymerization for the synthesis of novel homopolymer or a block or graft copolymer, optionally containing at least one polar group, with well defined molecular architectur... | 12/19/2000 |
| 6124411 | Preparation of novel Homo- and copolymers using atom transfer radical polymerization The present invention is directed to a process of atom (or group) transfer radical polymerization for the synthesis of novel homopolymer or a block or graft copolymer, optionally containing at least one polar group, with well defined molecular architectur... | 09/26/2000 |
| 5945491 | Preparation of novel homo- and copolymers using atom transfer radical polymerization The present invention is directed to a process of atom (or group) transfer radical polymerization for the synthesis of novel homopolymer or a block or graft copolymer, optionally containing at least one polar group, with well defined molecular architectur... | 08/31/1999 |
| 5919866 | Liquid toners with hydrocarbon solvents The toner particles of this invention comprise pigment and a resin. The resin comprises a novel polymer formed from ethylenically unsaturated monomers, macromeric moieties that render the resin dispersible in hydrocarbon solvents, and a surface-release pr... | 07/06/1999 |
| 5919867 | Block copolymer and a preparation process thereof An A-B-A type of block copolymer consisting of polymer block A of (meth)acrylate and polymer block B of olefin, having a Mw/Mn of 1.0 to 2.5, is disclosed. This block copolymer can be produced by polymerizing an olefin using a particular rare earth compou... | 07/06/1999 |
| 5866663 | Processes of polymerizing olefins Disclosed herein are processes for polymerizing ethylene, acyclic olefins, and/or selected cyclic olefins, and optionally selected olefinic esters or carboxylic acids, and other monomers. The polymerizations are catalyzed by selected transition metal comp... | 02/02/1999 |
| 5852145 | Polymerization processes for olefins Certain olefins such as ethylene, -olefins and cyclopentene can be polymerized by using catalyst system containing a nickel or palladium -diimine complex, a metal containing hydrocarbylation compound, and a selected Lewis acid, or a catalyst... | 12/22/1998 |
| 5789487 | Preparation of novel homo- and copolymers using atom transfer radical polymerization The present invention is directed to a process of atom (or group) transfer radical polymerization for the synthesis of novel homopolymer or a block or graft copolymer, optionally containing at least one polar group, with well defined molecular architectur... | 08/04/1998 |
| 5753763 | Process for preparing liquid toners with hydrocarbon solvents The toner particles of this invention comprise pigment and a resin. The resin comprises a novel polymer formed from ethylenically unsaturated monomers, macromeric moieties that render the resin dispersible in hydrocarbon solvents, and a surface-release pr... | 05/19/1998 |
| 5698634 | Process for preparing block copolymer of monoolefin A process for preparing a block copolymer of an -olefin and a vinyl compound is here disclosed which comprises the steps of polymerizing an olefin selected from ethylene and the -olefin having 3 or more carbon atoms by the use of a divalent ... | 12/16/1997 |
| 5621047 | Process for preparing linear monofunctional and telechelic difunctional polymers and compositions obtained thereby This invention relates to a process for preparation of non-crosslinked linear monofunctional and telechelic difunctional unsaturated polymers wherein the functional groups are acrylate or methacrylate groups. The average functionality number of the monofu... | 04/15/1997 |