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7488790 |
Processing of bimodal polymers
The present invention discloses the use of a supercritical fluid to improve the homogeneity of heterogeneous bi- or multi-modal resins resulting from a physical or a chemical blend of two or more...
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7166658 |
Rubber reduction
A method of reducing vulcanized rubber is provided. The method comprises the steps of heating the rubber, wherein the rubber includes synthetic rubber, in the presence of a solvent, wherein the...
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7067577 |
Apatite-reinforced resin composition
The present invention relates to a resin composition comprising a resin and apatite, wherein referring to the particulate form of said apatite present in the resin composition thus obtained, the...
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6995205 |
Resin composition with high thermal conductivity and method of producing the same
A resin composition having high thermal conductivity and excellent moldability and a method of producing the same is provided. The composition includes 40 vol % or more of a matrix resin, 10 to 55...
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6656589 |
Polyamide resin pellet for a miniature part
A polyamide resin pellet for a miniature part, comprising a polyamide resin (A) whose melting point as measured by DSC is in the range of 280 to below 330° C., which has an average volume of 0.001...
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6632918 |
Method of reclaiming crosslinked rubber
The object of the present invention is to provide a method of reclaiming crosslinked rubber, which can reclaim various kinds of crosslinked rubbers whose reclamation is difficult. The method of...
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6239243 |
Method for preparing hydrophilic silica gels with high pore volume
A method for the preparation of hydrophilic silica gels with high pore volume. In the preferred method a hydrophilic silica hydrogel treated with an organosilicon compound to effect hydrophobing of...
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6133413 |
Method of manufacturing devulcanized rubber using high temperature and shearing pressure
Devulcanized rubber in which sulfuric crosslinking bonds are cut and which contains carbon black particles having very small diameters. Vulcanized rubber of discarded products is devulcanized by...
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5951750 |
Anti-yellowing polyolefin compositions containing pearlescent pigment to prevent yellowing and method therefore
Antioxidant-containing polyolefin compositions are provided including titanium dioxide-coated mica particles having an overcoating calcined thereon to prevent yellowing of the compositions. Reduced...
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5886764 |
Polyester resin-based high index ophthalmic lenses having improved optical uniformity and/or tintability
Unsaturated polyester resin-based compositions that are modified for unexpected improvement in uniform, low optical distortion and/or improved tint speed by the addition of one or more additives...
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5548004 |
Method of preparing coating materials
The present invention provides a new and improved method of producing coating materials comprising the steps of providing a first organic material which is solid at room temperature, providing a...
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5502161 |
Method for the production of free-flowing tetrafluoroethylene polymer molding powders
An improved process for preparing free flowing tetrafluoroethylene (TFE) polymer powders is disclosed in which a TFE polymer powder is (1) wetted with an aqueous solution containing a wetting agent...
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5472997 |
Process for reprocessing plastic wastes
The invention relates to a process for reprocessing plastic wastes, in which the plastic wastes filled into vessels are autoclaved as coherent, porous bundles with high water absorption capacity in...
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5430127 |
Process for minimizing residual monomers
Aqueous emulsions, at least 80% of which have been polymerized, are treated by a process which comprises the separate steps of: a) initially treating the emulsion with a sufficient amount of a free...
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5376698 |
Polyolefin compositions containing coated mica particles to prevent yellowing and methods therefore
Antioxidant containing polyolefin compositions are provided including titanium dioxide-coated mica particles comprising a coating of silica and alumina calcined thereon to prevent yellowing of the...
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5244961 |
Thermoplastic compositions and process for preparing the same
A non-vulcanized thermoplastic composition comprising a polyamide and an elastomeric halogen-containing copolymer of a C 4 to C 7 isomonoolefin and a para-alkylstyrene is prepared by blending the...
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5232975 |
Preconsolidation process for making fluoropolymer composites
A process for preconsolidating a planar porous fiber-thermoplastic resin layer which is unconstrained in the inplane directions by heating the layer to above the melting point of the resin, then...
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5164428 |
Method for the production of fine grain ice and dry clathrate water for manufacturing of concrete/mortar, a method for the production of concrete/mortar by using fine grain ice or dry clathrate water and concrete/mortar products manufactured thereby
Concrete/mortar is manufactured with a small amount of water by using fine polymer particles containing frozen water. The water becomes available when the particles thaw or the particles may be...
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5141973 |
Method of preparing polyvinyl alcohol gel
A method of preparing a polyvinyl alcohol hydrogel contains the steps of charging an aqueous solution of a polyvinyl alcohol having a degree of hydrolysis of not less than 95 mol % and an average...
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5137942 |
Method of mixing high temperature composite filled, thermoplastic engineering resins
The method of compounding a high strength, cost-effective, composite of a high temperature, water sensitive, polar, polyamide-inide resin mixed with a talc, water absorbent/adsorbent filler. The...
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5030394 |
PVdF-based powder coatings
A process for preparing pigmented PVdF-based powder coating products is disclosed, which comprises the steps of (i) mixing PVdF resin with a compatible thermoplastic resin, preferably PMMA in a...
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4916170 |
Process for making skin marker
A skin marker is provided for diagnosis by X-ray tomography and nuclear magnetic resonance imaging. The skin marker is composed of a vessel in which a non-magnetic and X-ray radioopaque material is...
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4882373 |
Asphaltic composition
An asphaltic composition having improved tensile properties is disclosed. Also disclosed is a method for producing said composition which comprises: A. contacting an asphalt with a mineral acid;...
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4824878 |
Composites of thermoplastic polymers and silica reinforcing fibers
Composites of heat-stable thermoplastic polymers and silica reinforcing fibers having diameters of less than 1000 nm are prepared by polycondensation of silicic acid or polysilicic acid in the melt...
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4788017 |
Process for the improvement of the homogeneity of highly reactive of highly reactive polycondensates
The homogeneity of highly reactive polycondensates is improved in a process involving batch operations in a reactor, followed by extrusion and then cooling by a coolant to the point of...
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4752630 |
Thermoplastic polymer materials containing molecular inorganic reinforcing fibers
Composite materials consisting of heat-resistant thermoplastic polymers and metal oxide reinforcing fibers having diameters of less than 1000 nm are prepared by hydrolyzing an organometallic...
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4743411 |
Process for producing shaped silicon carbide article from a polycarbosilastyrene copolymer
A polycarbosilastyrene copolymer which comprises recurring carbosilane units of the formula I: ##STR1## and recurring silastyrene units of the formula II: ##STR2## is useful for producing a shaped...
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4709009 |
Method for the production of reformed p-vinylphenol polymers which are lightened in color
A method for the production of reformed p-vinylphenol polymers which are lightened in color comprising treating a p-vinylphenol polymer under heating at about 150° C. to about 350° C. in the...
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4698378 |
Procedure for the continuous production of free flowing and homogenous mixtures of plastic materials with admixtures
Processes for continuous conversion of granulated PVC material and additive substances to free-flowing pre-blends mechanically intermix at room temperature granulated PVC material and additive...
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4632947 |
Method of producing a polytetrafluorethylene material
The present invention relates to a method of producing a polytetrafluorethylene material comprising filler particles embedded therein. In fact, the mechanical characteristics of most synthetic...
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4621108 |
Gilsonite-asphalt emulsion composition
A base stock composition comprises a blend of gilsonite, asphalt and a rubber latex residue. The base stock may be used alone as a paving material or emulsified to form a gilsonite emulsion having...
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4554686 |
Polymethylmethacrylate bone cements and methods for preparing such bone cements
The present invention is directed to polymethylmethacrylate bone cement that is premixed and frozen so as to arrest the polymerization reaction at a suitable point. The frozen bone cement is...
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4501828 |
Dissolving water soluble polymers
High molecular weight, water soluble polymers are dissolved to form liquid solutions at relatively low polymer concentrations and solid, water-plasticized composites at higher polymer...
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4440916 |
Process for solid state free radical reactions
Particles of two different normally solid materials are caused to react by generating free radicals on the surfaces of at least one of the solids by mechanical working, suitably by comminution, at...
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4420585 |
Method of mixing elastomeric polymers for improved physical properties
A method of mixing crosslinkable elastomeric polymers and reinforcing fillers has been developed that yields significant improvements in physical properties compared to like polymers mixed by...
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4366270 |
Process for uniformly blending additives into thermoplastic synthetic resins
A method for the uniform blending of additives into thermoplastic synthetic resins. A solution or finely divided dispersion of the additive is produced in a polymerizable cyclic ester of the...
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4314921 |
Method and apparatus for preparing a bituminous binder
A bituminous binder for asphalt road coverings is prepared by homogenizing a blend of bitumen and polyethylene and/or polypropylene in a heated mixing vessel while stirring the blend and melting...
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4256612 |
Preparation of epoxy resin-rubber-glass mixture and mixture produced
Molded objects are formed from rubber and glass products, e.g. discarded glass and rubber, by grinding the rubber and glass into small particles and then melting them in separate kilns. The melted...
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4246390 |
Molding powder of ultra-high molecular weight polyethylene and process for its preparation
Ultra-high molecular weight polyethylene powder is heated at a temperature between its crystalline melting point and about 275° C. for a short period of time ranging from about one minute to about...
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4246210 |
Low temperature maturation of sheet molding compositions
Composite sheets of low pressure molding compounds sandwiched between films of polyethylene are thickened to a viscosity at which the film can be stripped from the composite by the application of...
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4193845 |
Immobilization of enzymes or bacterial cells
This invention relates to polymer composition having fixed bacterial cells and/or fixed enzyme, in which the enzyme or cells are dispersed within the polymer. The polymer composition is prepared by...
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4183839 |
Polyimide resin-forming composition
Polyimides of the formula ##STR1## Methods of making and polymerizing precursors for such polymers. Coating and adhesive compositions including constituents which can be converted into polyimides...
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4157327 |
Thermally conductive caulk
A thermally conductive caulk particularly suited for use in a phosphoric acid fuel cell is made by mixing graphite into a stable aqueous dispersion of polytetrafluoroethylene and fluorinated...
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4150008 |
Fluorocarbon polymer-pigment coating compositions stabilized against discoloration
The discoloration of finishes derived from coating compositions containing (a) fluorocarbon polymer, along with (b) pigment, and (c) a liquid carrier, Can be significantly reduced by...
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4145328 |
Bimetallic adhesive mixture for bonding and release applications
A bimetallic adhesive for surface bonding and for controlled release applications that is non-explosive and which also provides improved shock, moisture, temperature and spark resistance...
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4129550 |
Self-lubricating heat-resistant material and process for manufacturing same
A self-lubricating heat-resistant material which, in accordance with the invention, comprises from 20 to 90 percent by weight of a polymer binder, viz. poly(butadiene) with a degree of...
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4107125 |
Crosslinked aromatic polyimides and articles made therefrom
A polyimide polymeric material of a crosslinked combination of two linear aromatic polyimide polymers is disclosed. The crosslinked polyimide polymeric material exhibits a retention of physical...
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4105622 |
Process for the preparation of flame retardant thermoplastic resin compositions
A process for preparing a flame retardant thermoplastic resin composition which comprises heat mixing and kneading 100 parts by weight of a mixture consisting of a hydroxyl-terminated low molecular...
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RE29711 |
Polyureas and preparation thereof
The invention disclosed is a method for preparing new improved polyureas from polyisocyanates and polyamines. The product polyureas are characteristically tough, abrasion resistant resins having...
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4077934 |
Method of preparing compositions that comprise a polyphenylene ether resin and an alkenyl aromatic resin
A novel process is disclosed for preparing a composition which comprises a polyphenylene ether resin and an alkenyl aromatic resin. The process is based on preparing a preblend of the polyphenylene...
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