Patents by Inventor Patrick T. McGrail
Patrick T. McGrail has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6242083Abstract: A shaped article optionally containing a prepreg, or a composite derived from the shaped article with the prepreg, is prepared from a curable composition derived from the reaction in the presence of a catalyst of epoxy resin having at least 0.05% by weight of an epoxy resin oligomer with a solid rubber possessing at least 1% by weight of reactive groups and which is swellable or soluble in the reaction mixture, in a rubber epoxy resin weight ratio between 1:1 to 1:20, wherein said epoxy resin comprises (a) at least one first epoxy resin having an epoxy functionality of greater than three and (b) at least one second epoxy resin having a functionality of greater than one to three.Type: GrantFiled: July 20, 1999Date of Patent: June 5, 2001Assignee: Cytec Industries Inc.Inventors: Patrick T. McGrail, Stephen D. Jenkins, Jeffrey T. Carter, Peter R. Ciriscioli, Scott D. Lucas, Robin K. Maskell
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At least trifunctional epoxy resin reacted with solid rubber mixed with epoxy resin and curing agent
Patent number: 6013730Abstract: A curable composition and a method of making it comprises reacting in the presence of a catalyst epoxy resin(s) having at least 0.05% by weight of epoxy resin oligomer with a solid rubber which is swellable or soluble in the reaction mixture and possessing at least 1% by weight of reactive groups, in a rubber:epoxy resin(s) weight ratio of between 1:1 and 1:20, wherein said epoxy resin(s) comprises (a) at least one epoxy resin having an epoxy functionality of greater than three and (b) at least one second epoxy resin having a functionality of greater than one but not more than three; heating to effect the reaction, cooling to substantially ambient temperature, and adding any remaining portion of epoxy resin and curing agent(s).Type: GrantFiled: July 28, 1997Date of Patent: January 11, 2000Assignee: Fiberite, Inc.Inventors: Patrick T. McGrail, Stephen D. Jenkins, Jeffrey T. Carter, Peter R. Ciriscioli, Scott D. Lucas, Robin K. Maskell -
Patent number: 5952453Abstract: Methylenedianiline-free, PMR-type, curable compositions based on m-phenylenediamine or mixtures of m-phenylenediamine and p-phenylenediamine are described.Type: GrantFiled: May 8, 1996Date of Patent: September 14, 1999Assignee: Cytec Technology Corp.Inventors: Patrick T. McGrail, Paul Eustace, William S. Dewar
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Patent number: 5605984Abstract: Polymer compositions comprising phenol/formaldehyde systems and polyarylsulphones having epoxy pendent or end groups are disclosed together with novel epoxy-ended polyarylsulphones and novel cross-linked epoxy-ended polyarylsulphones. The compositions can be both unreinforced and reinforced with fibres and/or other fillers.Type: GrantFiled: September 21, 1990Date of Patent: February 25, 1997Assignees: Imperial Chemical Industries PLC, ICI Composites Inc.Inventors: Patrick T. McGrail, Jeffrey T. Carter
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Patent number: 5434224Abstract: A polymer composition especially suitable for producing fiber-reinforced structures having advantageous fracture toughness comprises a polyarylsulphone component and a thermoset resin component, each of which components is present at least partly as a phase continuous in at least one dimension. Preferred polyarylsulphones contain repeating units (PhSO.sub.2 Ph).sub.n and (Ph).sub.a linked through ether and/or thioether, where Ph is phenylene, n=1 to 2 and a=1 to 3; and such polyarylsulphones having amino end groups are provided as new compounds. The compositions can be made by spinodal decomposition of a mixture of the polyarylsulphone and a thermoset resin precursor.Type: GrantFiled: March 8, 1993Date of Patent: July 18, 1995Assignee: Imperial Chemical Industries PLCInventors: Patrick T. McGrail, Mark S. Sefton, Judith A. Peacock, Gregory R. Almen, Steven P. Wilkinson
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Patent number: 5231150Abstract: A polymer composition especially suitable for producing fibre-reinforced structures having advantageous fracture toughness comprises a polyarylsulphone component and a thermoset resin component, each of which components is present at least partly as a phase continuous in at least one dimension. Preferred polyarylsulphones contain repeating units (PhSO.sub.2 Ph).sub.n and (Ph).sub.a linked through ether and/or thioether, where Ph is phenylene, n=1 to 2 and a=1 to 3; and such polyarylsulphones having amino end groups are provided as new compounds. The compositions can be made by spinodal decomposition of a mixture of the polyarylsulphone and a thermoset resin precursor.Type: GrantFiled: September 30, 1991Date of Patent: July 27, 1993Assignee: Imperial Chemical Industries PLCInventors: Patrick T. McGrail, Mark S. Sefton, Judith A. Peacock, Gregory R. Almen, Steven P. Wilkinson
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Patent number: 5075412Abstract: Aromatic polymers comprise divalent aromatic units connected by ether and/or thioether linkages. At least one of such units carries at least one halogen radical linked to a nuclear carbon by a halogen-carbon bond or a functionalized derivative thereof linked to a nuclear carbon atom by a carbon-carbon bond.Type: GrantFiled: December 12, 1989Date of Patent: December 24, 1991Assignee: Imperial Chemical Industries plcInventors: Patrick T. McGrail, Paul D. MacKenzie, Ian W. Parsons
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Patent number: 4972031Abstract: A moulding composition comprising an uncured or partly, cured thermoset resin precursor and, mixed intimately therewith, a polyarylsulphone containing the repeating unit (Ph, SO.sub.2, PH).sub.n, where Ph is phenylene and n is 1 or 2, linked through ether and/or thioether.Type: GrantFiled: October 5, 1988Date of Patent: November 20, 1990Assignee: Imperial Chemical Industries PLCInventors: Martin T. Choate, Patrick T. McGrail, Mark S. Sefton, Jeffrey T. Carter
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Patent number: 4970271Abstract: An aromatic polymer comprises divalent aromatic units linked through oxygen, characterized in that some at least of those units are or contain aromatic rings free of electron-withdrawing groups and in that at least one of such rings carries at least one nitrogen radical linked to a nuclear carbon atom by a nitrogen-carbon bond.Preferably it consists to the extent of at least 75 mol percent by the repeating units:O--Ph'--O--Ph--A--Ph Ialone or in combination withO--Ph--A--Ph--O--Ph--A--Ph IIwherePh is paraphenylene;Ph' is phenylene, at least some of groups Ph' carrying a nitrogen radical;A is SO.sub.2 or CO; andthe As can be the same or different in the polymer chain.A process is provided which comprises nitrating a parent polymer and optionally reducing nitro groups to amino followed optionally by substitution of amino.Type: GrantFiled: January 18, 1989Date of Patent: November 13, 1990Assignee: Imperial Chemical Industries PLCInventors: Patrick T. McGrail, Ian W. Parsons, Paul D. MacKenzie
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Patent number: 4410600Abstract: A coated polyester film suitable for producing polyester/polyolefin laminates consists of biaxially oriented poly(ethylene terephthalate) film coated with a cross-linked styrene copolymer by deposition from an aqueous coating composition which comprises (A) a copolymer containing 50-75 mol % of styrene units and 25-50 mole % of comonomer units providing carboxylic groups (10-50 mole %) and alkyl carboxylate groups (20-50 mole %) and (B) a melamine/formaldehyde cross-linking agent. The styrene copolymer (A) is preferably a water-soluble copolymer of styrene and maleic anhydride partially converted into butyl ester and partially neutralized with ammonia, and the cross-linking agent (B) is conveniently hexamethoxymethylmelamine. The polyolefin layer in the laminates produced may in particular be of low-density polyethylene.Type: GrantFiled: August 2, 1982Date of Patent: October 18, 1983Assignee: Imperial Chemical Industries PLCInventor: Patrick T. McGrail
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Patent number: 4371489Abstract: A process for producing an oriented thermoplastics film, e.g. a polyethylene terephthalate film, having an anti-static layer in which the film is oriented by stretching in at least one direction, and preferably biaxially oriented by stretching in two mutually perpendicular directions, and a coating composition comprising (i) an acrylic or methacrylic copolymer, which is preferably cross-linkable and (ii) an aqueous solution of at least one partially neutralized acidic phosphate ester is applied before the commencement of or during the molecular orientation.Type: GrantFiled: October 15, 1980Date of Patent: February 1, 1983Assignee: Imperial Chemical Industries LimitedInventor: Patrick T. McGrail
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Patent number: 4339531Abstract: A coated film base suitable for coating with a light-sensitive photographic emulsion layer comprises a self-supporting film of a synthetic linear polyester and a continuous subbing layer applied to at least one surface of said self-supporting film comprising a water-insoluble copolymer of (a) styrene or a derivative of styrene, (b) a comonomer selected from acrylic acid, methacrylic acid or a derivative of acrylic acid or methacrylic acid and (c) a copolymerizable sulphonated ethylenically unsaturated comonomer having the general structure: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different and represent hydrogen, halogen, alkyl, nitrile, amide, amine, ketone, ethyl or vinyl;R.sub.Type: GrantFiled: February 24, 1981Date of Patent: July 13, 1982Assignee: Imperial Chemical Industries LimitedInventors: Terence D. J. Elmes, Patrick T. McGrail
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Patent number: 4304851Abstract: Light-sensitive photographic films are produced by coating polyester films with aqueous dispersions of polyesters or copolyesters containing free-functional acid groups. Corona discharge treatment of the polyester or copolyester layers is disclosed for direct adhesion to photographic emulsions or indirect adhesion via a polymeric sub and/or gelatin sub.Type: GrantFiled: October 1, 1980Date of Patent: December 8, 1981Assignee: Bexford LimitedInventors: Patrick T. McGrail, David R. Mann
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Patent number: 4252885Abstract: Light-sensitive photographic films are produced by coating polyester films with aqueous dispersions of polyesters or copolyesters containing free-functional acid groups. Corona discharge treatment of the polyester or copolyester layers is disclosed for direct adhesion to photographic emulsions or indirect adhesion via a polymeric sub and/or gelatin sub.Type: GrantFiled: March 22, 1978Date of Patent: February 24, 1981Assignee: Bexford LimitedInventors: Patrick T. McGrail, David R. Mann