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| Number | Title | Issue Date |
| 5264538 | Cyclic poly(aryl ether) oligomers Cyclic poly(aryl ether) oligomers and mixtures thereof, and methods for the preparation thereof in a highly dilute reaction medium under reaction conditions favorable for ring closure at low degrees of polymerization. These oligomers are represented by th... | 11/23/1993 |
| 5143177 | Tree stand A tree stand comprising a stand portion adapted for releasable attachment to a loop formed from an elongated flexible member that is placed in circumferential relationship with a tree or post.... | 09/01/1992 |
| 5132380 | Metal complex compounds A monocyclopentadienyl or substituted monocyclopentadienyl metal complex containing compound useful as a polymerization catalyst corresponding to the formula: CpMXn+ A- wherein: Cp is a single η5 -cyclopentadienyl o... | 07/21/1992 |
| 5066741 | Process for preparation of syndiotactic vinyl aromatic polymers A process for preparing syndiotactic vinyl aromatic polymers comprising contacting one or more aromatic monomers under polymerization conditions with a catalyst corresponding to the formula: [Cpm MXn X'p ]+ A- | 11/19/1991 |
| 5058759 | Plastic dairy product container having tamper evident lid and method of production A plastic, tamper resistant container particularly adapted for the marketing of dairy products comprising a cup and a lid having a tab extending peripherally therefrom such that application of a force to the tab sufficient to remove the lid, initiates fra... | 10/22/1991 |
| 5057583 | Polymerization process and initiator system therefor Narrow molecular weight telechelic and/or block copolymers are prepared by anionic polymerization using multifunctional lithium initiator in combination with a C2-16 lithium alkoxide.... | 10/15/1991 |
| 5045517 | Catalyst and process for preparation of syndiotactic polystyrene Syndiotactic polymers of vinyl aromatic monomers are prepared by conducting the polymerization in the presence of a catalytic amount of the reaction product of polymethylaluminoxane and a cyclopentadienyl/titanium complex.... | 09/03/1991 |
| 5045604 | Selective formation of methacrylimide containing polymers Resins comprising methacrylimide functionality and C2-20 alkyl or cycloalkyl methacrylate functionality are prepared by amidization and imidization of corresponding prepolymers comprising C2-20 alkyl or cycloalkyl methacrylate functi... | 09/03/1991 |
| 5043227 | Polyimide and copper metal laminates A laminated structure comprising a copper metal substrate adhered to a polyimide polymer by the use of first and second adhesive resin layers.... | 08/27/1991 |
| 5021288 | Microfibers of syndiotactic vinyl aromatic polymers, nonwoven mats of the microfibers A melt-blowing process for producing a fiber preferably a microfiber of a syndiotactic vinyl aromatic polymer, which comprises supplying a vinyl aromatic polymer having a high degree of syndiotacticity in a molten form from at least one orifice of a nozzl... | 06/04/1991 |
| 5015749 | Preparation of polyhydrocarbyl-aluminoxanes An improved process for the preparation of aluminoxanes comprising contacting an aluminoxane precursor such as a hydrocarbyl substituted aluminum compound with a porous organic or inorganic aqueous imbiber material containing water sorbed or imbibed there... | 05/14/1991 |
| 5013790 | Polymer blends of tapered styrene-butadiene triblock thermoplastic elastomers A thermoplastic blend useful for the preparation of molded articles comprising a thermoplastic polymer and a tapered triblock elastomer of a monovinylidene aromatic monomer and butadiene having a melt index (condition 200/5.0 ASTM method D1238-82) of 0.5 ... | 05/07/1991 |
| 5007706 | Polymeric optical fiber Improved polymeric optical fibers comprising a core of a copolymer prepared by anionic polymerization of alpha-methylstyrene and a monovinylidene aromatic comonomer at a temperature above 61° C. and a cladding polymer are disclosed. The fibers have super... | 04/16/1991 |
| 5006383 | Polymeric blend and laminated structures prepared therefrom A polymeric blend comprising a polypropylene resin and very low density polyethylene are particularly suited for preparation of films which are readily adhered to metal surfaces. Sheet metal laminates according to the foregoing design are usefully employe... | 04/09/1991 |
| 4975491 | Functionalized polymers prepared by anionic polymerization Novel polymers prepared by anionic polymerization techniques containing phenol, silyl ether, aminophenyl functionality or carboxylic acid or ester.... | 12/04/1990 |
| 4959435 | Oriented optically transparent crystalline syndiotatic vinylaromatic polymer Oriented, syndiotactic, optically transparent vinylaromatic polymers are prepared by a process comprising heating the polymer to a temperature above its crystalline melting point, cooling the polymer to a temperature less than an orientable temperature at... | 09/25/1990 |
| 4937175 | Free radically initiated process Compositions comprising a free radical sensitive compound and a thermally stable substituted diazene which upon exposure to electromagnetic radiation is convertible to a thermally unstable substituted diazene may be formed and processed utilizing thermall... | 06/26/1990 |
| 4937145 | Composite paper reinforced thermoplastic sheet A three layer structural sheet material having improved resistance to delamination comprising a core layer of a composite paper having outer surface layers of thermoplastic resin adhered to both major surfaces thereof.... | 06/26/1990 |
| 4929676 | Impact and chemical resistant polycarbonate blend Impact resistant polycarbonate blends, which may be extruded without pre-drying, are prepared from an aromatic polycarbonate, an aromatic polyester, a carbon monoxide polymer and a polyalkyleneoxide rubber, and optionally, a grafted copolymer or mixture o... | 05/29/1990 |
| 4929699 | Process for hydrogenation of polymers Ethylenically unsaturated polymers are hydrogenated by use of a bis(alkyl substituted cyclopentadienyl) lanthanide catalyst.... | 05/29/1990 |
| 4904729 | Impact resistant polycarbonate blend Impact resistant polycarbonate blends, which may be extruded without pre-drying, are prepared from an aromatic polycarbonate, an aromatic polyester, and a polyalkyleneoxide rubber, and optionally, a grafted copolymer or mixture of grafted copolymers.... | 02/27/1990 |
| 4894423 | Environmental stress failure resistant polycarbonate Environmental stress failure resistant and impact resistant polycarbonates useful for producing molded plastic components are prepared from an aromatic polycarbonate and a copolymer of ethylene and carbon monoxide.... | 01/16/1990 |
| 4886856 | Functionalized elastomers blended with polar copolymers of styrene and acrylic acid methacrylic acid or maleic anhydride Novel graft copolymer elastomers comprising a rubbery substrate polymer and a graft copolymer of a monomer capable of grafting to the rubbery substrate and a copolymerizable comonomer having pendant reactive groups capable of functionally reacting with re... | 12/12/1989 |
| 4877826 | Weatherable styrenic polymer blend comprising polyalkylene glycol Improved plasticization and stabilization of poly(styrene-acrylonitrile)/grafted diene rubber blends is obtained by use of polyalkylene glycol stabilizers.... | 10/31/1989 |
| 4874815 | ABS Compositions having trimodal rubber particle distributions A rubber modified interpolymer of a monovinylidene aromatic monomer and an ethylenically unsaturated nitrile monomer. The rubber particles of the present invention have a trimodal particle size distribution. Said particles comprise an emulsion polymerized... | 10/17/1989 |
| 4859339 | Microporous membranes of syndiotactic vinylaromatic polymers Microporous, asymmetric membranes comprising syndiotactic vinylaromatic polymers having utility as membranes for ultrafiltration or reverse osmosis and a process for their production.... | 08/22/1989 |
| 4851454 | Photolytically crosslinkable thermally stable composition Photolytically crosslinkable thermally stable compositions comprising at least one crosslinkable polymer and a crosslinkable quantity of a multifunctional 3,4-disubstituted maleimide. The compositions may be employed to prepare adhesives and photo printin... | 07/25/1989 |
| 4847326 | Copolymer blends Novel copolymer blends comprising (a) a copolymer of alkenyl aromatic monomers containing from about 10 to about 70 percent by weight of an isopropenyl aromatic monomer, (b) a block copolymer having an alkenyl aromatic monomer blocks and polybutadiene blo... | 07/11/1989 |
| 4837258 | Fire retardant impact modified carbonate polymer composition A flame retardant, impact resistant carbonate polymer composition comprising a mixture of one or more carbonate polymers, an impact modifying quantity of a rubbery polymer containing residual ethylenic unsaturation, a fluorine containing polymer of the fi... | 06/06/1989 |
| 4837075 | Coextruded plastic film label for in-mold labeling A label particularly adapted for use in in-mold labeling of blow-molded polyethylene containers comprising a heat activatable ethylene polymer adhesive layer and a surface printable layer with optional intermediate layers to provide interlayer adhesion an... | 06/06/1989 |
| 4824720 | Coalesced polyolefin foam having exceptional cushioning properties Improved closed cell foams particularly suitable for use in packaging applications comprising a plurality of coalesced strands or profiles of a foamed thermoplastic composition.... | 04/25/1989 |
| 4824629 | Process for preparing an oriented crystalline syndiotactic vinylaromatic polymer Oriented, syndiotactic, optically transparent vinylaromatic polymers are prepared by a process comprising heating the polymer to a temperature above its crystalline melting point, cooling the polymer to a temperature less than an orientable temperature at... | 04/25/1989 |
| 4822856 | Preparation of polymeric blend stock A process for preparing a polymeric blend stock comprising fluidizing a first particulated polymer, contacting the particulated polymer with droplets of a latex of a second polymer or polymer mixture, retaining the resulting product in a fluid state under... | 04/18/1989 |
| 4808680 | Polymerization of vinyl aromatic monomers using cyclopentadienyl zirconium catalysts Polymers of vinyl aromatic monomers having a high degree of syndiotacticity are prepared by contacting with a catalyst comprising a cyclopentadienyl zirconium (IV) complex and polymethylaluminoxane under polymerization conditions.... | 02/28/1989 |
| 4774301 | Zirconium containing catalysts and method of use Polymers of vinyl aromatic monomers having a high degree of syndiotacticity are prepared by contacting with a catalyst comprising a zirconium (IV) complex and polymethylaluminoxane under polymerization conditions.... | 09/27/1988 |
| 4724186 | Weatherable three layer films A flexible weather resistant film particularly adapted for use as a weatherable surface coating by lamination to a substrate comprising a weather resistant layer of a blend of a vinyl chloride polymer, an interpolymer of ethylene and at least one carboxyl... | 02/09/1988 |
| 4704431 | Blends of polypropylene and vinylaromatic/-methylstyrene copolymers A polymer resin comprising a blend of polypropylene, a copolymer of a vinylaromatic monomer and -methylstyrene prepared by anionic polymerization at a temperature above 61° C. and a monovinylidene aromatic polymer grafted -olefin copolymer ... | 11/03/1987 |
| 4704330 | Uniformly coated polymeric composition A particulated thermoplastic polymer having a uniform surface coating of zinc stearate is prepared by contacting the polymer particles with atomized droplets of molten zinc stearate while supporting and conveying the polymer by a moving stream of a gas. R... | 11/03/1987 |
| 4680234 | Weatherable coextruded flexible films and laminated structure A flexible weather resistant film comprising a weather resistant layer of a blend of a vinyl chloride polymer and chlorinated polyethylene and a second layer comprising a normally solid thermoplastic adhesive. Improved performance is obtained when the fir... | 07/14/1987 |
| 4666950 | Oxidation stabilization of thermoplastic foams Thermoplastic resinous foams having improved resistance to oxidation are provided by the incorporation into such foams of a polyvinyl ether of a C6-30 alcohol.... | 05/19/1987 |
