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| Number | Title | Issue Date |
| 7902310 | Copolymers based on phosphorous-containing monomers, methods for the production thereof and their use The invention relates to copolymers based on phosphorous-containing monomers (A) and on macromonomers (B), to methods for the production thereof and to their use as additives for inorganic binding agent suspensions based on cement, lime, gypsum and anhydrite. The co... | 03/08/2011 |
| 7402645 | Soluble polyfunctional vinyl aromatic polymer and method of producing the same The present invention relates to a soluble polyfunctional vinylaromatic copolymer improved in heat resistance, resistance to thermal decomposition, solvent solubility, and processability. The soluble polyfunctional vinylaromatic polymer is obtained by cationically p... | 07/22/2008 |
| 7399814 | Living radical polymerization method A highly active and environment-friendly catalyst for use in a living radical polymerization is provided. A catalyst for use in a living radical polymerization method is provided. The catalyst comprises a central element, which is selected from germanium, tin... | 07/15/2008 |
| 7351770 | Ionic hydrophilic high molecular weight redox polymers for use in enzymatic electrochemical-based sensors Ionic hydrophilic high molecular weight redox polymers for use in enzymatic electrochemical-based sensors include a hydrophilic polymer (such as a hydrophilic polymer backbone) with ionic portions (e.g., cationic monomers incorporated in the hydrophilic polymer back... | 04/01/2008 |
| 7332554 | Polymers with new sequence distributions The invention relates to new polymerization processes including diluents including hydrofluorocarbons and their use to produce novel polymers with new sequence distributions. In particular, the invention relates to copolymers of an isoolefin, preferably isobutylene,... | 02/19/2008 |
| 7332555 | Polymers with new sequence distributions The invention relates to new polymerization processes including diluents including hydrofluorocarbons and their use to produce novel polymers with new sequence distributions. In particular, the invention relates to copolymers of an isoolefin, preferably isobutylene,... | 02/19/2008 |
| 7271214 | Cement dispersant and methods of making and using the same The present invention relates to cement dispersant that is a copolymerization product of a first monomer (A) comprising a carboxylic acid, a second monomer (B) comprising an alkoxylated allyl alcohol sulfate, and, optionally, a third monomer (C) comprising an alkoxy... | 09/18/2007 |
| 7232872 | Polymerization processes The invention provides for a process to produce polymers utilizing a hydrofluorocarbon diluent. ... | 06/19/2007 |
| 7214750 | Polymerization processes The invention relates to new processes to produce polymers utilizing bayonette cooled slurry reactor systems and diluents including hydrofluorocarbons. ... | 05/08/2007 |
| 7041760 | Process for production of butyl rubber The present invention relates to a process for producing polymers containing repeating units derived from at least one isoolefin monomer, optionally repeating units derived from at least one multiolefin monomer and optionally further copolymerizable monomers in the ... | 05/09/2006 |
| 7034085 | Method for polymerizing ethylenically unsaturated monomers by degenerative iodine transfer The invention pertains to a method for making a block or gradient final (co)polymer comprising a step of radically polymerizing a mixture of ethylenically unsaturated monomers in the presence of a) a radical precursor and b) an iodine atom-containing intermediate po... | 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 |
| 7005490 | Method for making methacrylate unit-containing low-polydispersity polymers The invention pertains to a method for making a methacrylate unit-containing polymer with polydispersity | 02/28/2006 |
| 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 |
| 6936393 | Catalyst for preparing polyester for toner A catalyst for preparing a polyester for a toner, comprising an inorganic tin(II) compound; a polyester resin composition comprising a polyester and the catalyst; and a toner comprising the polyester resin composition. The catalyst for preparing a polyester is suita... | 08/30/2005 |
| 6869998 | Concrete or cement dispersant and method of use A dispersant for use with concrete or cement, and a concrete or cement admixture that comprises a cementitious material, water, and the dispersant. The dispersant includes a polymeric derivative of carboxylic acid, and has a sulfur-containing moiety that is covalent... | 03/22/2005 |
| 6649716 | Polymerization of alpha-methylstyrene A process for producing polymers of -methylstyrene uses tin IV chloride as a polymerization initiator. Use of tin IV chloride as an initiator allows polymerization to proceed without purification of the monomer prior to processing. Polymerization c... | 11/18/2003 |
| 6620898 | Production of polyisobutylene copolymers The invention relates to a new improved catalyst to produce random copolymers of one or more iso-olefin monomers and one or more para-alkylstyrene monomers. The invention also relates to an improved continuous slurry polymerization process to produce rand... | 09/16/2003 |
| 6451941 | Inorganic dispersion stabilizer and process for producing resinous particles using the same An inorganic dispersion stabilizer having a hydrophobic inorganic oxide such as hydrophobic silica dispersed in an aqueous medium in the presence of an hydrophilic organic compound such as alcohol. An suspension polymerization process for producing resino... | 09/17/2002 |
| 6444768 | Production of polyisobutylene copolymers The invention relates to a new improved catalyst to produce random copolymers of one or more iso-olefin monomers and one or more para-alkylstyrene monomers. The invention also relates to an improved continuous slurry polymerization process to produce rand... | 09/03/2002 |
| 6399721 | Process for synthesizing styrene-butadiene rubber Conventional SBR does not have the soft and smooth chew characteristics needed in chewing gum base for soft chew applications. Conventional SBR typically also has undesirable odor and taste characteristics that have generally limited its use in chewing gu... | 06/04/2002 |
| 6331596 | Method of preparing carbamate-functional polymers A method of preparing a carbamate-functional polymer comprising the steps of providing a hydroxy-functional polymer and reacting a carbamate compound with the hydroxy-functional polymer in the presence of a transcarbamation catalyst, thereby forming a car... | 12/18/2001 |
| 6291612 | Process for preparing vinyl polymer A vinyl polymer having a controlled molecular weight and narrow molecular weight distribution is prepared by polymerizing a vinyl monomer using an organic halide polymerization initiator in the presence of a cuprous compound catalyst in a solvent containi... | 09/18/2001 |
| 5854367 | Process for cationic polymerization The specification discloses a process for cationic polymerization of vinyl aromatic monomers, adhesive compositions containing polymers made by the process and use of the polymers as processing aids for thermoplastic polymers. In the process, a vinyl arom... | 12/29/1998 |
| 5847064 | Polycarbometallanes via acyclic diene metathesis polymerization An organometallic polymer having the following moiety: ##STR1## is disclosed. R1 and R2 are independently selected from the group of H, alkyl having 30 or fewer carbons, alkenyl having 30 or fewer carbons, and aromatic having on... | 12/08/1998 |
| 5811501 | Process for producing unsaturated group-terminated isobutylene polymer The present invention provides a novel halogen-free solvent system which can produce a good isobutylene polymer and can be easily reused. A novel process for the production of an isobutylene polymer is provided which comprises using a hydrocarbon solvent ... | 09/22/1998 |
| 5777037 | Process for producing isobutylene polymer The present invention provides a novel solvent which is capable of providing an excellent isobutylene polymer, little affects the environment, has a lower solubility in water than those of halogenated hydrocarbons having 1 or 2 carbon atoms and can be dec... | 07/07/1998 |
| 5744560 | Metal accelerated polymerization processes A free radical polymerization process for the preparation of a polymer comprising heating a mixture of a free radical initiator, a stable free radical agent, a metal catalyst, or a metal stable free radical complex catalyst, and at least one polymerizable... | 04/28/1998 |
| 5674955 | Production of polyisobutenes This invention relates to a method of producing polyisobutenes from a feedstock comprising a mixture of C4 hydrocarbons and containing isobutene and at least 5% by weight of 1-butene using a cationic polymerisation catalyst, characterised in that prior to... | 10/07/1997 |
| 5663260 | Hyperbranched copolymers from AB monomers and C monomers A process for preparing hyperbranched polymers from AB monomers and C monomers Using a self-constructing approach is disclosed along with the hyperbranched polymers of a living-like character produced by such process.... | 09/02/1997 |
| 5587441 | Hyperbranched polymers from AB monomers A process for preparing hyperbranched polymers from AB monomers using a self constructing approach is disclosed. Hyperbranched polymers of a living-like character produced by such process are also disclosed.... | 12/24/1996 |
| 5545457 | Self-adhesive lidding film for packaging electronic components Self-adhesive lidding film for packaging electronic components, whose adhesive layer is covered with a non-adhesive covering in the center, wherein the adhesive layer comprises a mixture of two acrylate adhesive compositions of different polarity, the fir... | 08/13/1996 |
| 5543479 | Process for the production of polyisoolefins Polyisoolefins are produced according to the invention by polymerizing isoolefins having 4 to 16 carbon atoms, optionally with conjugated diolefins having 4 to 6 carbon atoms and/or cationically polymerizable, mono- or polyunsaturated, organic compounds h... | 08/06/1996 |
| 5464898 | Suspensions for producing filled cast resins A cast resin suspensions comprising: (A) 40 to 80% by weight of an inorganic filler, (B) 60 to 20% by weight of a liquid polymerizable organic monomer, and (C) 0 to 5 parts by weight based on the sum of (A) and (B) of a polymerizable organosilicon component as coup... | 11/07/1995 |
| 5463004 | Process for polymerizing conjugated dienes with lithium-tin-nitrogen initiators A method for preparing a polymer having low hysteresis loss value, good breaking properties and good processability with good productivity is provided by adding a tin compound during the propagation step of polymerization of a conjugated diene and/or an a... | 10/31/1995 |
| 5463003 | Process for polymerizing conjugated dienes with lithium-tin-nitrogen initiators A method for preparing a polymer having low hysteresis loss value and good breaking properties using a novel lithium initiator compound for polymerization of a conjugated diene and/or an aromatic vinyl hydrocarbon. Polymers produced in accordance with thi... | 10/31/1995 |
| 5399641 | Method of controlling the polymerization of acrylates The present invention relates to a method of controlling the polymerization of acrylates using a catalyst which is selected from at least one of zinc, cadmium, or mercury halides in combination with free iodine to give acrylate polymers having narrow mole... | 03/21/1995 |
| 5373073 | Process for the preparation of 1-monoalkyl dimethylsilylpropyne polymers A process for the preparation of 1-monoalkyl(C1 -C4) dimethylsilyl-1-propyne polymers which comprises polymerizing a 1-monoalkyl (C1 -C4)dimethylsilyl-1-propyne monomer in the presence of a compound of a transit... | 12/13/1994 |
| 5359018 | Method of controlling the polymerization of acrylates The present invention relates to a method of controlling the polymerization of acrylates using a catalyst which is selected from at least one of zinc, cadmium, or mercury halides in combination with free iodine to give acrylate polymers having narrow mole... | 10/25/1994 |
| 5286822 | Perfluoroalkyl sulfide polymer solvents for fluoromonomer polymerization A novel process for the free radical polymerization of fluoromonomers in which perfluoroalkyl sulfide solvents are used is disclosed. The solvents have little effect on atmospheric temperature and ozone concentrations. The polymers produced are useful as ... | 02/15/1994 |
