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7601796 Synthesis of hybrid block copolymers and uses thereof  
The present invention relates to the field of polymer chemistry and more particularly to multiblock copolymers and methods of preparing the same.
7521514 Emulsion polymerization of dipolymers of tetrafluoroethylene and 3,3,3-trifluoropropene  
An aqueous semi-batch polymerization process is disclosed for the manufacture of dipolymers of tetrafluoroethylene and 3,3,3-trifluoropropene that contain between 45 and 95 mole percent...
7521513 Semi-batch process for producing fluoroelastomers  
A novel semi-batch emulsion polymerization process for the production of fluoroelastomers is disclosed wherein a hydrocarbon anionic surfactant is employed as the dispersing agent. The surfactant...
7423100 Polymerization processes  
The invention provides for polymerization processes to produce polymers utilizing boiling pool reactor systems and diluents including hydrofluorocarbons.
7332550 Stabilization of transition metal complexes for catalysis in diverse environments  
This present invention is directed towards the identification or design, preparation, and use of suitable transition metal complexes for use as catalysts. The transition metal complexes may...
7326759 Compositions for solid freeform fabrication  
Chemical compositions are disclosed. One exemplary composition, among others, includes: a basic component, an acidic component, at least one acrylate component, oxidizing agent, reducing agent, and...
7303821 Material and process for precisely controlled polymeric coatings  
This invention provides a chemically coated surface for the electrophoretic separation application. The surface comprises of block copolymers prepared from addition monomers selected from a group...
7300990 Zwitterionic polymers  
Polymers may be made from zwitterionic monomers having controlled architectures and molecular weights, using living polymerisations such as group or atom transfer radical polymerisation. For...
7247387 Material and process for controlled thin polymeric coatings on plastic surface  
This invention provides a chemically coated surface for the plastics surface such as contact lens. The chemical surface coating comprises of at least one addition polymer prepared from addition...
7048874 Process for preparing an aqueous or non-aqueous solution or dispersion of a polythionphene or thiophene copolymer  
A process for preparing an aqueous or non-aqueous solution or dispersion of a polythiophene or thiophene copolymer, containing structural units according to formula (I): in which R 1 and R 2 ...
7019067 Polymer powders, pressure sensitive adhesives and methods of making the same  
A method for making hydrophilic homopolymers and copolymers of poly 2-hydroxyethyl methacrylate. Also disclosed are coatings, films, hydrogels, cosmetic compositions, dermatological compositions,...
6916761 Polymer-supported Lewis acid catalyst  
In order to provide a novel Lewis acid catalyst, which shows high reaction activity in aqueous medium, is easily recovered, and is excellent in reusability, a Lewis acid group expressed by the...
6897271 Porous hydrogels  
The present invention relates to a process for the manufacture of a porous polymer; wherein a composition comprising a polymerizable component, a porogen having an inverse temperature dependent...
6870014 Catalyst and method for producing polytetrahydrofurane  
The invention relates to a catalyst which contains a catalytically active quantity of at least one oxygen-containing molybdenum and/or wolfram compound on an oxidic support material and which has...
6858763 Process for preparing elastomeric ethylene-hexafluoropropylene copolymer  
The present invention relates to a process for preparing an elastomeric ethylene-hexafluoropropylene copolymer with excellent vulcanization properties, which comprises emulsion polymerizing...
6815517 Mortar composition of at least two components and curable by heat initiation and a method for fastening tie rods, reinforcing steel for concrete or the like in solid substrates  
An at least two-component mortar composition is described, which can be cured by thermal initiation and contains at least one polymerizable monomer and/or at least one curable resin, at least one...
6759491 Simultaneous reverse and normal initiation of ATRP  
The use of concurrent reverse and normal initiation processes in an ATRP enables the use of highly active catalysts under “reverse ATRP” conditions and leads to the synthesis of well-defined...
6716929 Superabsorbent polymers having a slow rate of absorption  
Superabsorbent polymers having a slow rate of absorption, and a process for their preparation. The superabsorbent polymer has a slow rate of absorption, is crosslinked with a covalent crosslinking...
6696518 Method of selectively hydrogenating ethylenically unsaturated double bonds in polymers  
The present invention relates to a process for hydrogenating ethylenically unsaturated double bonds in polymers P by reacting an aqueous dispersion of at least one polymer P with hydrogen in the...
6635725 Method for producing ethylene-vinyl acetate copolymer aqueous emulsion  
A method for producing an ethylene-vinyl acetate copolymer aqueous emulsion is provided which uses a redox catalyst comprising a transition metal salt and an erysorbic acid and/or an ascorbic acid,...
6624262 Polymerization process for ionic monomers  
The present invention describes preparation of nanocomposite particles and structures by polymerizing monomers onto a functional inorganic colloid comprising a polymerization initiation site. The...
6573345 Catalyst compositions and processes for olefin oligomerization and polymerization  
The present invention is directed to processes of polymerizing olefin monomers and copolymerizing olefin monomer(s) with functionalized alpha-olefin monomers in the presence of certain late...
6555640 Process for producing metal-containing resin and composition thereof  
Process that is capable of synthesizing a metal-containing resin having a good antifouling property in a short period of time without having such problems associated with the synthesis as gelation....
6506856 Transition metal catalyzed polymerization of olefinic monomers in a water-containing polymerization medium  
Polymers based on monomers having a C—C double bond and/or C—C triple bond are prepared by polymerization of these monomers in the presence of a catalyst system comprising as active...
6414094 Olefin polymer and process for producing the same  
An olefin polymer of an alkenyl hydrocarbon having 5 or more carbon atoms, wherein said olefin polymer is an amorphous polymer having a Mn of 300,000 and a Mw/Mn of 2.40 or less, and substantially...
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...
6395846 Catalysts for olefin polymer production  
The invention relates to high-activity catalysts for olefin polymerization, to efficient methods for producing them, and to efficient methods of using the catalysts for producing high-quality...
6391987 Gas-phase polymerization process for producing propylene/1-pentene copolymers  
Process for producing a propylene/1-pentene polymer in the presence of a Ziegler-Natta catalyst system with the monomer reactants being in the vapor phase while the reaction is in process and with...
6300450 Conjugated diene compound polymerization catalyst process for the preparation of conjugated diene polymer in the presence thereof and polybutadiene thus prepared  
The present invention provides a process for the production of a conjugated diene polymer having a controlled microstructure at a high polymerization activity in the presence of a metallocene type...
6291606 Highly stereoregular polyacetylenes from organorhodium catalysts in aqueous media  
The present invention provides methods for obtaining highly stereoregular polyacetylenes from organorhodium catalysts in aqueous media in high yield. These methods afford substantial advantages in...
6121392 Low softening point beta-pinene-based resins with improved molecular weight distribution  
The specification discloses a method for producing low softening point beta-pinene based polyterpene resins having an essentially unimodal molecular weight distribution, as well as resins made by...
6087458 Initiator composition for polymerizing unsaturated monomers  
An initiator composition for polymerizing unsaturated monomers, comprising a component (A) which is a mixture of i) at least one salt of a metal in the second sub-group of the periodic table,...
5965675 Polymerization processes  
A polymerization process is provided comprising contacting under polymerization conditions a catalyst, a taming agent, ethylene and optionally a comonomer, wherein the catalyst comprises chromium...
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...
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...
5691431 Cationic polymerization catalyzed by lewis acid catalysts supported on porous polymer substrate  
An immobilized Lewis Acid catalyst system for the carbocationic polymerization of olefin monomer is provided. The catalyst comprises a porous polymer support having catalytically active Lewis Acid...
5677400 Process for producing syndiotactic-1,2-polybutadiene  
In a process for producing syndiotactic-1,2-polybutadiene by suspension polymerization wherein a mixture composed of 1,3-butadiene, a cobalt compound, and an organometallic compound or metal...
5627244 Process producing a polymer comprising an unsaturated carboxylic acid or a derivative thereof  
Disclosed is a process for producing a polymer of an unsaturated carboxylic acid or a derivative thereof, the process comprising polymerizing an unsaturated carboxylic acid or a derivative thereof...
5616292 Process of making PAN fibers  
A process for preparing PAN fibers under precipitation polymerization conditions in an aqueous solvent system.
5530078 Preparation of a modified polytetrafluoroethylene and use thereof  
Polymerizing tetrafluoroethylene with modifying amounts of a perfluoro(alkyl vinyl ether) at temperatures below 60° C. using permanganate or similar initiators by the suspension process and...
5508313 Tacky microspheres having pendant hydrophilic polymeric or oligomeric moieties  
The invention provides inherently tacky, polymeric, organic, solvent-insoluble, solvent dispersible, elastomeric, pressure sensitive adhesive microspheres having pendant hydrophilic polymeric or...
5346971 Aqueous suspension polymerization of 1,3-butadiene to produce syndiotactic-1,2-polybutadiene  
A process for producing polybutadiene essentially consisted of syndiotactic-1,2-polybutadiene in an aqueous medium includes a step off polymerizing diene essentially consisted of 1,3-butadiene in...
5342909 Ruthenium and osmium metal carbene complexes for olefin metathesis polymerization  
Processes for the synthesis of several new carbene compounds of ruthenium and osmium are provided. These novel complexes function as stable, well-defined catalysts for the metathesis polymerization...
5290891 Process for the preparation of polyindoles, electroconductive compositions and devices containing them and applications of the polyindoles  
The invention relates to a process for the preparation of polymers based on polyindoles by chemical polymerization of indole in the presence of an oxidizing agent and of a solvent. The invention...
5268436 Radically polymerizable multi-component mixtures and their use (I)  
The invention relates to moldable, radically polymerizable multicomponent mixtures containing ethylenically unsaturated, polymerizable compounds, if desired in admixture with soluble and/or...
5266665 Metathesis polymerization catalyst and method of polymerizing cyclic olefins therewith  
Cyclic olefin metathesis polymerization catalyst comprising metal compounds wherein said metals consist essentially of a minor amount of a transition metal which Will initiate ring-opening...
5252629 Adhesives for dentin  
An adhesive showing a strong bonding effect on dentin characterized by comprising in combination a primer comprising a water-miscible monomer and a salt of copper, iron or cobalt, and a curing...
5218065 Polymerization process  
An improved olefin metathesis catalyst system comprises a tungsten halide having an average of no more than about one halide substituent and no more than one oxygen substituent per tungsten with...
5212270 Compositions suitable for imparting wetting characteristics to fabrics, and fabrics treated with same  
This invention relates to a composition prepared by reacting, in the presence of a redox initiator and a mineral acid, (a) at least one hydroxyl-containing imide, amide or mixtures thereof of a...
5196257 Bidimensional organic diaphragms and their preparation processes  
The invention relates to bidimensional organic membranes or diaphragms and to their preparation processes. These diaphragms have at least one monomolecular layer of organic molecules A, such as...
Matches 1 - 50 out of 190 1 2 3 4 >