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| Number | Title | Issue Date |
| 5336719 | Transparent toughened plastics Tough transparent thermoplastics blends may be prepared by blending 10 to 99 weight percent of a block copolymer; 0.1 to 1 weight percent of particulate rubber having a particle size from 0.1 to 10 microns; and the balance a clear glassy polymer. These cl... | 08/09/1994 |
| 5252664 | Transparent toughened thermoplastics Tough transparent thermoplastics blends may be prepared by blending 10 to 99 weight percent of a block copolymer; 0.1 to 1 weight percent of particulate rubber having a particle size from 0.1 to 10 microns; and the balance a clear glassy polymer. These cl... | 10/12/1993 |
| 5244965 | Polymer solution treatment process The present invention provides a process to remove phosphine residues from a hydrogenated polymer solution.... | 09/14/1993 |
| 5194528 | Dimer reduction The dimer content in alpha, beta- ethylenically unsaturated ketones may be reduced by treating the ketone with a peroxide of the formula ##STR1## wherein R4 is a C1-6 branched or straight chain alkyl radical or a C6-10 | 03/16/1993 |
| 5079296 | Transparent toughened thermoplastics Tough transparent thermoplastics blends may be prepared by blending 10 to 99 weight percent of a block copolymer; 0.1 to 1 weight percent of particulate rubber having a particle size from 0.1 to 10 microns; and the balance a clear glassy polymer. These cl... | 01/07/1992 |
| 5051299 | Fibre reinforced belt The present invention relates to fiber-reinforced belts, such as timing belts or conveyor belts, which are manufactured from a hydrogenated nitrile rubber having oxazoline functionality. Thus, the hydrogenated nitrile rubber contains less than 10 mole per... | 09/24/1991 |
| 5045603 | Chlorinated EPDM with superior stability A chlorinated ethylene-alpha olefin-nonconjugated diolefin terpolymer having a chlorine content of from about 0.5 to 14 percent by weight characterized by superior viscosity stability on storage or exposure to elevated temperatures is obtained by chlorina... | 09/03/1991 |
| 5043392 | Toughened thermoplastics Functionalized thermoplastics such as styrene-maleic anhydride copolymers polystyrene or maleated polyolefins may be thoughened with halogenated rubbers which are copolymers of isoprene and isobutylene provided a dialkyl or dihydroxyalkyl amino alkanol is... | 08/27/1991 |
| 5026744 | Synthetic clay A nontacky, shock absorbing rubber composition suitable for replacing the natural clay used in horseshoe pits to absorb the energy of a thrown horseshoe, said composition comprising butyl rubber, crosslinked butyl rubber, cellulose fibre, particulate fill... | 06/25/1991 |
| 5026794 | Adducts of an hydroxy-free acrylate resin and an epoxy resin This invention provides an adduct of an epoxy resin and a hydroxy free acrylate resin. The novel adduct contains vinyl unsaturation and hence may be copolymerized with an ethylenically unsaturated monomer to provide a tough thermoset resin.... | 06/25/1991 |
| 4990456 | Analysis of asphalt The rubber content in a low gel rubber modified asphalt may be accurately and rapidly determined using gel permeation chromatography in which one or more columns comprise glass particles having a size from 80/120 mesh to 200/400 mesh and a pore size from ... | 02/05/1991 |
| 4985540 | Process for removing rhodium-containing catalyst residue from hydrogenated nitrile rubber A process is provided for removing rhodium-containing catalyst residue from a solution of hydrogenated nitrile rubber. The process utilizes an ion exchange resin which must be both macroreticular and modified with a selected amine, thiol, carbodithioate, ... | 01/15/1991 |
| 4983528 | Measurement of unsaturation level in butyl and EPDM rubbers A method is provided for quantitatively determining the amount of unsaturation in butyl and EPDM rubbers using a gel permeation chromatograph in combination with an ultraviolet detector. Placement of a differential refractive index detector in series with... | 01/08/1991 |
| 4980406 | Fortified polyacrylate resins The present invention relates to thermosetting polyacrylate compositions having surprising impact strength and glass transition temperature properties. The compositions are prepared with a selected acrylate monomer, a copolymerizable unsaturated monomer, ... | 12/25/1990 |
| 4959420 | Chlorinated EPDM with superior stability A chlorinated ethylene-alpha olefin-nonconjugated diolefin terpolymer having a chlorine content of from about 0.5 to 14 percent by weight characterized by superior viscosity stability on storage or exposure to elevated temperatures is obtained by chlorina... | 09/25/1990 |
| 4956398 | Nitrile rubber/vinyl chloride polymer/silica compositions The present invention provides a silica filled composition which contains vinyl chloride polymer and a nitrile rubber. The silica is characterized by being coated with a polymer which is prepared by the free radical emulsion polymerization of acrylate mon... | 09/11/1990 |
| 4944926 | Method to treat rhodium-containing solutions The present invention provides a method to treat a rhodium containing solution which is derived from the catalytic hydrogenation of nitrile rubber. An additive selected from thiourea, polysaccharide and carbon black is used to cause a rhodium-containing p... | 07/31/1990 |
| 4943616 | Living cationic polymerization process A polymerization process is provided for producing a terminally functional polymer which comprises introducing a monomer charge, a Lewis acid and an organic peroxy compound into a suitable reaction vessel and polymerizing the monomer charge at a temperatu... | 07/24/1990 |
| 4942920 | Heat exchanger leak detection The present invention relates to a convenient process to detect leaks in a partially disassembled floating head-type heat exchanger. The heat exchanger is partially disassembled by removing the floating head end shell cover. A lightweight, flexible membra... | 07/24/1990 |
| 4925900 | Halogenated-hydrogenated acrylonitrile-butadiene rubber The present invention relates to adducts of a partially hydrogenated acrylonigrile-butadiene rubber and a halogen selected from chlorine and bromine. The preferred adducts are characterized by having a surprisingly low gel content of less than ten weight ... | 05/15/1990 |
| 4925715 | Linerless roll of self fusing tape The present invention relates to a tension wound roll of tape. The tape does not contain a separate adhesive layer but will bond to itself after being elongated by at least 50 percent and wrapped in overlapping layers. The tape of the invention will not s... | 05/15/1990 |
| 4921910 | Toughened thermoplastics Functionalized thermoplastics such as styrene-maleic anhydride copolymers or maleated polyolefins may be toughened with halogenated rubbers which are copolymers of isoprene and isobutylene provided a dialkyl or dihydroxyalkyl amino alkanol is present as a... | 05/01/1990 |
| 4916956 | Catalyst sampling device A system for exposing a sample to the interior of a reaction vessel has a pair of chambers interconnected by a passage. Each of the chambers may be isolated by valves with the outer chamber being removable. A sample holder is slidable between the chambers... | 04/17/1990 |
| 4916180 | Butyl rubber/polypropylene elastoplastic The present invention provides an elastoplastic composition comprising a butyl terpolymer rubber and polypropylene, which composition is characterized by being treated with a peroxide curing agent.... | 04/10/1990 |
| 4909898 | Polymer recovery from solution A process for removing substantial quantities of volatile liquid e.g. hydrocarbon from a mixture of polymer and such liquid is provided. This process includes the initial step of introducing the mixture, and a liquid which is immiscible with the polymer, ... | 03/20/1990 |
| 4908421 | Production of terminally functional polymer by cationic polymerization A polymerization process is provided for producing a terminally functional polymer which comprises introducing a monomer charge, a Lewis acid and an organic peroxy compound into a suitable reaction vessel and polymerizing the monomer charge at a temperatu... | 03/13/1990 |
| 4879352 | Adducts of an aminoalcohol and nitrile rubber The present invention provides a method to prepare an adduct of a nitrile rubber and an amino alcohol. The present adducts have 2-oxazoline functionality which is detectable in the infrared spectrum.... | 11/07/1989 |
| 4877832 | Thermoset resin compositions This invention relates to unsaturated polyester compositions having improved impact resistance and good surface appearance. The compositions contain a novel additive. The novel additive comprises the partially polymerized product of a mixture comprising a... | 10/31/1989 |
| 4857632 | Residue removal process The present invention relates to a process to remove residue from partially hydrogenated nitrile rubber. The process is undertaken by mixing and kneading the rubber in the presence of an extractant fluid. The extractant fluid is a solvent for the residue ... | 08/15/1989 |
| 4855051 | Microbial treatment of wastewater to remove tertiary butyl alcohol The novel bacterial strains Bacillus coagulans ATCC 53595, Arthrobacter globiformis ATCC 53596 and Pseudomonas stutzeri ATCC 53602 are able to catabolize tertiary butyl alcohol and are therefore useful in treating wastewater to remove the compound prior t... | 08/08/1989 |
| 4837252 | Polymer-asphalt mixing process The present invention provides a process for the preparation of polymer modified asphalt compositions.... | 06/06/1989 |
| 4826910 | Oil resistant thermoplastic elastomer The present invention provides a process to prepare an oil resistant thermoplastic elastomer composition which contains carboxylated nitrile rubber, polyvinyl chloride and polycaprolactone.... | 05/02/1989 |
| 4818406 | Biological degradation of chemicals bearing an oxydibenzene nucleus A bacterium has been isolated which is capable of degrading surfactants having an oxydibenzene nucleus, such as sodium dodecyl oxydibenzene disulfonate. Accordingly, it may be used in biological wastewater treatment plants to remove the surfactant. The pr... | 04/04/1989 |
| 4794143 | Polymer composition containing CPE and styrene polymer This invention relates to a process to prepare impact resistant blends of chlorinated polyethylene and a styrenic polymer.... | 12/27/1988 |
| 4786690 | Process for polymer production A process is provided for the production of a polymer of reduced molecular weight by subjecting, in bulk form, a halogenated butyl polymer having at least 75 percent of the unsaturation in the EXO methylene configuration to mastication in an extruder whil... | 11/22/1988 |
| 4779657 | Rubber compositions An improved rubber composition for use in articles requiring reduced permeability to air, comprises: one hundred parts by weight of a terpolymer of isobutylene, isoprene and -methylstyrene, from about 30 to about 90 parts by weight of at least one carbo... | 10/25/1988 |
| 4780503 | Carboxylated latex A high solids latex of a functional monomer may be prepared by emulsion polymerization of the monomer charge to a specified overall conversion and then introducing an additional micelle forming surfactant or a unimodal seed latex and continuing the polyme... | 10/25/1988 |
| 4774288 | Resin cure system for hydrogenated nitrile polymer The invention relates to a vulcanizable composition containing a partially hydrogenated nitrile polymer and a resin vulcanization system.... | 09/27/1988 |
| 4757110 | Thermoplastic rubber compositions Rubbery thermoplastic blends comprise an acrylonitrile-butadiene-styrene or a styrene-acrylonitrile polymer, a rubbery carboxylated butadiene-acrylonitrile polymer and a metal oxide or hydroxide.... | 07/12/1988 |
| 4754793 | Butyl elastomeric compositions having reduced permeability to gases A new rubber composition, the vulcanizate of which has reduced permeability to gases, comprises: one hundred parts by weight of at least one butyl-type rubbery polymer; from about 3 to about 20 parts by weight of -methylstyrene homopolymer having a... | 07/05/1988 |
