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| Number | Title | Issue Date |
| 7345121 | Method of controlled free radical polymerisation of acrylic acid and its salts thereof, resulting low-polydispersity polymers, and their uses The present invention relates to the technical sector of the polymerisation of acrylic acid and its salts, more particularly in solution, more particularly by controlled radical method, the use of the corresponding organo-sulphurated transfer agents, the acrylic aci... | 03/18/2008 |
| 7332553 | Functional monomers for molecular recognition and catalysis The present invention refers to new classes of polymerisable monomers, to molecularly imprinted polymers obtainable by polymerisation of at least one of the monomers and a crosslinking monomer in the presence of a template molecule. The obtained polymers may be used... | 02/19/2008 |
| 7285611 | (Meth)acrylic acid type polymer and unsaturated polyalkylene glycol type copolymer, and methods for production thereof This invention concerns a (meth)acrylic acid type polymer, wherein the value S representing the quantity of an sulfur element introduced which is defined by the formula, S=(quantity of S contained in polymer)/(total quantity of S)×100, is not less than 35. This (me... | 10/23/2007 |
| 7262250 | Scorch-retardant composition The present invention relates to the prevention of scorching before crosslinking of a thermoplastic and/or elastomeric composition with peroxides or azo compounds. This is achieved by using a family of specific nitroxides as additive. ... | 08/28/2007 |
| 7208557 | Functional monomers for molecular recognition and catalysis The present invention refers to new classes of polymerisable monomers, to molecularly imprinted polymers obtainable by polymerisation of at least one of the monomers and a crosslinking monomer in the presence of a template molecule. The obtained polymers may be used... | 04/24/2007 |
| 7205366 | Hole transport polymers and devices made with such polymers The present invention is generally directed to a hole transport polymer comprising a polymeric backbone having linked thereto a plurality of substituents comprising fused aromatic ring groups, with the proviso that the polymer does not contain groups selected from t... | 04/17/2007 |
| 7160946 | Method to improve high temperature cohesive strength with adhesive having multi-phase system A method for improving the cohesive strength at elevated temperature of a die attach adhesive formulation of a liquid curable resin, initiator, and filler, comprises adding to the adhesive formulation an aromatic bismaleimide resin powder that does not dissolve in t... | 01/09/2007 |
| 7160971 | pH-sensitive methacrylic copolymers and the production thereof The present invention provides novel multi-functional methacrylic copolymers that exhibit cationic pH-sensitive behavior as well as good water solubility under acidic conditions. The copolymers are constructed from tertiary amine methacrylates and poly(ethylene glyc... | 01/09/2007 |
| 7132487 | (Meth) acrylic acid type polymer and unsaturated polyalkylene glycol type copolymer, and methods for production thereof This invention concerns a (meth)acrylic acid type polymer, wherein the value S representing the quantity of an sulfur element introduced which is defined by the formula, S=(quantity of S contained in polymer)/(total quantity of S)×100, is not less than 35. This (me... | 11/07/2006 |
| 7109280 | Block copolymers and preparation thereof The present invention relates to block copolymers for applications in medicine and biotechnology and synthesis thereof. Block copolymers comprise polyvalent N-Acetyl Glucosamine (NAG) which bind more efficiently to lysozyme than NAG itself. The effective inhibition ... | 09/19/2006 |
| 7071273 | Tetrafluoroethylene copolymer, its production method and paste extruded product Provided are a tetrafluoroethylene copolymer excellent in paste extrudability, which comprises a unit based on tetrafluoroethylene and a unit based on a monomer represented by a formula of CF2═CF—O—(CF2)nCF═CF2 (wh... | 07/04/2006 |
| 7041762 | Polyvalent imprinted polymer and process of preparation thereof The present invention relates to a polyvalent imprinted polymer useful in medicine and biotechnology and to a process for the preparation thereof. More particularly it relates to the said polymer of formula (1) herein below | 05/09/2006 |
| 7034079 | Radial polymers prepared by stabilized free radical polymerization A process for preparing a radial polymer comprising at least 3 polymeric arms and a central core comprising a polymerized di- or polyfunctional monomer, said process comprising the steps, (a) polymerizing at an elevated temperature... | 04/25/2006 |
| 7025886 | Material The present invention provides porous monoliths with high flow permeability that can be produced by polymerising and divinylbenzene in the presence of an initiator, a carboxy-functionalized nitroxide stable free radical and polymeric porogens. The monoliths produced... | 04/11/2006 |
| 6998453 | (Meth)acrylic acid type polymer and unsaturated polyalkylene glycol type copolymer, and methods for production thereof This invention concerns a (meth)acrylic acid type polymer, wherein the value S representing the quantity of an sulfur element introduced which is defined by the formula, S=(quantity of S contained in polymer)/(total quantity of S)×100, is not less than 35. This (me... | 02/14/2006 |
| 6943222 | Temperature-controlled process of producing polymer A process of producing a polymer by aqueous solution polymerization with good productivity without causing the formation of noxious gases or the formation of impurities due to the noxious gases, or without any danger of foaming and the like is disclosed. The process... | 09/13/2005 |
| 6894093 | Materials free of endorine disruptive chemicals The present invention describes plastic materials and food additives that are free or substantially free from endocrine disruptive chemicals. The plastic materials may be used in products which are exposed to individuals in which endocrine disruptive activity is par... | 05/17/2005 |
| 6864335 | Process for forming solid pressure sensitive adhesive polymer microspheres In forming pressure sensitive adhesive microspheres by copolymerizing a non-ionic monomer of an alkyl acrylate or alkyl methacrylate ester of a non-tertiary alcohol and an ionic monomer copolymerizable with said non-ionic monomer, non-free radically polymerizable ac... | 03/08/2005 |
| 6846881 | Preparation of defect-free polyacrylamide electrophoresis gels in plastic cassettes Irregularities in the pore structures of polyacrylamide gels that are formed in cassettes against plastic walls are reduced or eliminated by the inclusion of an oxygen scavenger in the gel-forming solution. Avoidance of the irregularities results in electropherogram... | 01/25/2005 |
| 6825308 | Copolymers and preparation thereof The present invention relates to copolymers for applications in medicine and biotechnology and preparation thereof. Copolymers comprises polyvalent N-Acetyl Glucosamine(NAG) in polyvalent form and bind more efficiently to lysozyme than NAG itself. The copolymers exh... | 11/30/2004 |
| 6822060 | Process for producing a tetrafluoroethylene polymer excellent in strength A process for producing a tetrafluoroethylene polymer, which comprises polymerizing tetrafluoroethylene in an aqueous medium in the presence of a dispersant, a stabilizer and a polymerization initiator, wherein the polymerization initiator is a redox polymerization ... | 11/23/2004 |
| 6743871 | Method for polymerising ethylene The invention concerns a method for producing ethylene homopolymers or copolymers comprising at least 90 mol % of units derived from ethylene which consists in: contacting in polymerising conditions, the monomers with a catalytic system including: (a) a catalytic so... | 06/01/2004 |
| 6696519 | Redox process for preparing emulsion polymer having low residual monomer content A process for preparing an aqueous emulsion polymer including providing at least one ethylenically unsaturated monomer and a free radical redox initiator system under emulsion polymerization conditions, the redox initiator system including a water-soluble... | 02/24/2004 |
| 6667375 | Ethylene--olefin copolymer and polyethylene composition An ethylene--olefin copolymer obtained by a gas phase polymerization method in the presence of a catalyst, wherein the copolymer satisfies the following conditions (A-1) to (A-4): (A-1) Melt flow rate (MFR): 0.3 to 5.0 g/10 minutes (A-2) Melt fl... | 12/23/2003 |
| 6667374 | Polymer flocculants with improved dewatering characteristics A high molecular weight water soluble acrylamide based polymer having improved flocculating and dewatering properties is provided. The polymer is prepared by a process in which a small quantity of a chain branching agent is added to the polymerization rea... | 12/23/2003 |
| 6642337 | Stabilized cyanoacrylate adhesives The problem addressed by the invention was to find an anionic polymerization inhibitor for cyanoacrylate adhesives containing one or more cyanoacrylates, stabilizers against anionic and radical polymerization and auxiliaries typically used in such adhesiv... | 11/04/2003 |
| 6590049 | Multi-functional initiators for atom transfer radical (Co)polymerization The present invention is directed to novel compounds that can serve as highly efficient initiators for controlled radical (co)polymerization processes including atom transfer radical (co)polymerization processes. These compounds include di-(trimethylolpro... | 07/08/2003 |
| 6326451 | Acrylonitrile-based precursor fiber for the formation of carbon fiber, process for preparing same, and carbon formed from same This invention relates to an acrylonitrile-based precursor fiber for the formation of a carbon fiber which is obtained by spinning an acrylonitrile-based copolymer (which contains not less than 90% by weight of acrylonitrile units as monomeric components,... | 12/04/2001 |
| 6310156 | (Meth) acrylic acid polymer and manufacturing method thereof A (meth)acrylic acid polymer is obtained by conducting a polymerization reaction using 60 mol % or more of a hydrophilic monomer containing (meth)acrylic acid and a combination of at least one kind of persulfate salts and at least one kind of bisulfite sa... | 10/30/2001 |
| 6310154 | Solid acids as catalysts for the preparation of hydrocarbon resins Solid acids are used as catalysts for the polymerization of a feed stream containing at least one of pure monomer, C5 monomers, and C9 monomers to produce hydrocarbon resins. Freely-associated water may be removed from the solid acid catalyst prior to use... | 10/30/2001 |
| 6284850 | Polymerization of vinyl monomers Free radically polymerizable monomers may be polymerized using as an initiator a combination of a selected arylsulfonyl halide or alkylsulfonyl halide and a selected compound containing a lower valent transition metal atom. These polymerizations are somet... | 09/04/2001 |
| 6281309 | Flourinated solid acids as catalysts for the preparation of hydrocarbon resins Fluorinated solid acids and supported fluorinated solid acids are used as catalysts for the polymerization of a feed stream containing at least one of pure monomer, C5 monomers, and C9 monomers to produce hydrocarbon resins. Freely-associated water may be... | 08/28/2001 |
| 6133372 | Aqueous polymer dispersion, process for preparing the same and its use in leather production Aqueous polymer dispersions are produced by polymerizing monoethylenically unsaturated monomers bearing acid groups in an acid, partially or totally neutralized form, optionally with other monomers that can be copolymnerized therewith in the presence of h... | 10/17/2000 |
| 5948874 | Acid catalyzed polymerization The present invention is an improvement in a free radical bulk polymerization process for preparing a high molecular weight polymer from a vinyl aromatic monomer characterized in that the polymerization is conducted in the presence of an acid catalyst hav... | 09/07/1999 |
| 5886118 | Process for polymerizing acrylonitrile This invention relates to a process for polymerizing acrylonitrile, comprising: (A) forming a polymerizable mixture comprising acrylonitrile monomer, solvent and a metal catalyst; (B) contacting said mixture with an initiator, said initiator being selecte... | 03/23/1999 |
| 5837776 | Process for producing water soluble anionic dispersion polymers Aqueous dispersions of water soluble nonionic and anionically charged vinyl and allyl addition polymers can be obtained by polymerizing in the presence of an anionically charged water soluble polymer stabilizer in a saturated salt solution. Methods for th... | 11/17/1998 |
| 5780563 | Supported lewis acid catalysts derived from superacids useful for hydrocarbon conversion reactions A supported Lewis acid catalyst system for catalyzing hydrocarbon conversion reactions including cationic polymerization, alkylation, isomerization and cracking reactions is disclosed, wherein the catalyst system comprises an inorganic oxide support havin... | 07/14/1998 |
| 5756606 | Means to control particle size and eliminate fouling in the synthesis of syndiotactic 1,2 - polybutadiene Syndiotactic 1,2-polybutadiene is a thermoplastic resin which has double bonds attached in an alternating fashion to its polymeric backbone. Films, fibers and molded articles can be made utilizing syndiotactic 1,2-polybutadiene. It can also be blended int... | 05/26/1998 |
| 5739221 | Suspension-polymerization process for producing expandable styrene resin beads Expandable styrene resin beads are described, which, when expanded to a bulk density of 20 g/l, give pre-expanded beads in which the number of cells present along those surface parts of radii which range from the bead surface to a depth of 0.2 mm from the... | 04/14/1998 |
| 5629384 | Polymers of N-acryloylmorpholine activated at one end and conjugates with bioactive materials and surfaces Polymers of the monomer N-acryloylmorpholine having a single reactive moiety at one end of the polymer chain have the following structure: ##STR1## wherein -Z-X-Y is a polymer capping moiety, such as mercaptan, X represents a saturated residue of a l... | 05/13/1997 |
