Patents Examined by B. Lipman
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Patent number: 4861812Abstract: A modified composition is disclosed for compounding with a polyolefin to produce a resin from which cement adherent polyolefin fibers may be produced by conventional fiber forming methods. The modifier composition comprising a polyolefin resin modified to contain a reactive Si(IV) moiety. A preferred embodiment comprises the reaction product obtained from the high shear dry blending of an alkylamino alkoxysilane with an acid modified polyolefin, preferably gamma-aminopropyltriethoxysilane dry blended with meleated polypropylene. Such modifier composition when compounded in from about 1 to about 10 weight percent with a polyolefin, preferably polypropylene, provides a resin from which cement adherent fibers may be produced.Type: GrantFiled: December 23, 1986Date of Patent: August 29, 1989Assignee: Exxon Chemical Patents Inc.Inventors: James J. McAlpin, Wai Y. Chow
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Patent number: 4801655Abstract: A hydrolyzed dye/gel polymer for use in a pH-based sensor is characterized by its chemical and optical stability with respect to dye loss with time. Preferably, the dye/gel polymer is hydrolyzed by heating in a dilute base solution for a period of time sufficient to remove weakly bonded dye molecules from the polymer, then washed to remove the base solution and loose dye.Type: GrantFiled: August 20, 1987Date of Patent: January 31, 1989Assignee: Gould, Inc.Inventors: Richard C. Murray, Jr., Mark S. Goorsky
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Patent number: 4798870Abstract: The invention comprises regenerative reactive articles having surfaces useful for decontamination comprising hydrohalide-polyhalides or quaternary halide-perhalide salts corresponding to the formula: ##STR1## wherein X is BR or I; n is an integer of about 5 to 1,000, R is H or a C.sub.1 -C.sub.3 alkyl radical; and the backbone polymer is in the form of a film or fabric. The invention also comprises the process of preparing the said reactive surfaces.Type: GrantFiled: December 4, 1986Date of Patent: January 17, 1989Assignee: Southwest Research InstituteInventors: Robert E. Lyle, Jr., Henry F. Hamil
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Patent number: 4707524Abstract: Small amounts of peroxides which do not decompose to TBA and which have a half-life in the range of about 1.0 to 10 hrs. at 128.degree. C. are incorporated in polypropylene by thermal mechanical melting in an extruder. Control of molecular weight and molecular weight distribution is achieved as a function of the amount of peroxide added. The peroxides of choice are 2,2 di(t-amyl) peroxy propane and 3,6,6,9,9 pentamethyl-3 n-propyl-1,2,4,5 tetraoxacyclononane.Type: GrantFiled: May 6, 1986Date of Patent: November 17, 1987Assignee: Aristech Chemical CorporationInventors: Raymond J. Ehrig, Richard C. Weil
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Patent number: 4694046Abstract: Novel water soluble terpolymers of acrylamide, an alkali metal or ammonium salt of acrylic acid and an oil soluble or hydrophobic alkyl acrylamide monomer have been found to provide efficient viscosification of water or brine solutions. The polymers are prepared by a free radical micellar polymerization of acrylamide and alkyl acrylamide followed by base catalyzed partial hydrolysis. These terpolymers, called HRAM, impart unique and useful rheological properties to aqueous solutions. In a water or brine solution the hydrophobic groups associate to increase hydrodynamic size and enhance thickening efficiency. Solutions containing the HRAM terpolymers show increased viscosification at higher polymer concentration and reduced salt sensitivity relative to polyacrylamide based HPAM solutions.Type: GrantFiled: November 25, 1985Date of Patent: September 15, 1987Assignee: Exxon Research and Engineering CompanyInventors: Jan Bock, Donald B. Siano, S. Richard Turner
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Patent number: 4684667Abstract: Basic polymers useful as weak base catalyst support for rhodium in a one-step hydroformylation/reduction of an olefin to an alcohol are prepared by reacting chloromethylated polystyrene resin with an alkoxide of an alkanolamine in a nonaqueous solution. The reaction product has repeating units of the formula: ##STR1## wherein R is an aliphatic tertiary amine and n is the number of repeating units in the polymeric structure.Type: GrantFiled: April 21, 1986Date of Patent: August 4, 1987Assignee: The Dow Chemical CompanyInventor: Douglas L. Hunter
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Patent number: 4654401Abstract: Polyolefins are graft modified with functional hydroxyl groups through an imide linkage and chemically reacted with polymerized polycarbonates, polyesters, and/or poly(ester-carbonates) to produce a thermoplastic molding composition.Type: GrantFiled: December 30, 1985Date of Patent: March 31, 1987Assignee: General Electric CompanyInventor: Robert R. Gallucci
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Patent number: 4544710Abstract: There is disclosed a new polymer bound catalyst, a means for the production of a polymer bound aryl substituted crown ether and use of such polymer bound aryl substituted crown ethers as catalysts.Type: GrantFiled: March 4, 1982Date of Patent: October 1, 1985Assignee: The Goodyear Tire & Rubber CompanyInventor: Dane K. Parker
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Patent number: 4477623Abstract: An improved paint composition comprises an aqueous dispersion of a water insoluble addition polymer formed substantially of monomers selected from the class consisting of styrene, acrylates, methacrylates, vinyl esters, and vinyl chloride; at least one anionic or non-ionic emulsifier; at least one polyoxyethylene-chain-containing compound with between 60 and 400 oxyethylene units; and a minor amount of at least one alkali-soluble addition polymer. The emulsifier may itself be a polyoxyethylene-chain-containing compound. The unsaturated monomers comprising the water insoluble addition polymer include at least one monomer containing a phosphoric acid, sulphonic acid, or carboxylic acid group or a group functioning as an emulsifier.Type: GrantFiled: January 27, 1983Date of Patent: October 16, 1984Assignee: Syrnes International B.V.Inventors: Dick A. Pons, Anno Bijker
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Patent number: 4460750Abstract: The invention relates to a process of thermomechanical treatment in the molten state, in the presence of organic peroxides, of co-polymers with a density less than 0.935, obtained by co-polymerization under a pressure of less than 4 MP.sub.a of ethylene and a higher alpha-olefin. The co-polymers thus treated may advantageously be used for the manufacture of finished objects such as films according to the current techniques of conversion of "high pressure" type polyethylene.Type: GrantFiled: June 25, 1982Date of Patent: July 17, 1984Assignee: BP Chimie S.A.Inventors: Jean-Paul Thiersault, Alain Senez, Jean L. Vidal
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Patent number: 4433113Abstract: New polymers are described which are copolymers of olefins and tetraalkyl ammonium carboxylates. They are insoluble in water, soluble in hydrocarbons and are antistatic agents.Type: GrantFiled: August 10, 1981Date of Patent: February 21, 1984Inventors: Fred E. Woodward, Alice Hudson
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Patent number: 4414346Abstract: An aqueous petroleum resin emulsion is realized by the slow addition of part of the water with vigorous agitation to a resin blended with up to 10 weight percent resinplast and in the presence from 3 to 10 weight percent of an emulsifier until inversion and thereafter adding the balance of the water at low agitation and thereafter cooling said emulsion to a temperature at least about 20.degree. C. below the softening point of the mixture of emulsifier, resin and resinplast prior to terminating agitation.Type: GrantFiled: January 15, 1982Date of Patent: November 8, 1983Assignee: Exxon Research & Engineering Co.Inventors: Frank C. Jagisch, Morris L. Evans
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Patent number: 4348309Abstract: Spheres of cured vinyl ester resin of a size useful as a flattening agent in paper coating compositions are prepared by a process of adding an aqueous phase containing polyvinyl alcohol to a stirred vinyl ester resin phase containing a free-radical catalyst to form a resin-in-water dispersion followed by addition of a promoter and the resin allowed to cure.Type: GrantFiled: October 9, 1980Date of Patent: September 7, 1982Assignee: The Dow Chemical CompanyInventor: Warren W. Pruess
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Patent number: 4338238Abstract: A process for polymerizing chloroprene which may contain as much as 50% by weight of a copolymerizable monomer, in an alkaline aqueous emulsion, of which the alkali ions at least partially consist of potassium, into a latex rich in solid matter having a solid content of from 50 to 65% by weight in the presence of an alkali salt of disproportionated abietic acid and a formaldehyde condensate with naphthalene sulphonic acid and also an alkali hydroxide, whereby polymerization is carried out until there is a conversion of more than 90% characterized in that(a) the aqueous phase contains from 2.8 to 3.8 parts by weight of an alkali salt of disproportionated abietic acid, from 0.3 to 2.0 parts by weight of a formaldehyde condensate of a naphthalene sulphonic acid and from 0.25 to 0.75 parts by weight of an alkali phosphate and/or polyphosphate, based on 100 parts by weight of monomer, and(b) polymerization is initiated using formamidine sulphinic acid.Type: GrantFiled: October 29, 1980Date of Patent: July 6, 1982Assignee: Bayer AktiengesellschaftInventors: Wilfried Nolte, Wilfried Keller, Heinz Esser