Patents by Inventor Edward N. Squire
Edward N. Squire 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: 5006382Abstract: Articles made from amorphous dipolymers of perfluoro-2,2-dimethyl-1,3-dioxole with tetrafluoroethylene having high glass transition temperatures of 140.degree. C. or higher, low indices of refraction, and good physical properties, and low dielectric constants, include, among others, substrates for circuit boards, composites, sheets and films, optical lenses, and electronic current carrying devices.Type: GrantFiled: April 9, 1990Date of Patent: April 9, 1991Assignee: E. I. du Pont de Nemours and CompanyInventor: Edward N. Squire
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Patent number: 5000547Abstract: Amorphous copolymers of perfluoro-2,2-dimethyl-1,3-dioxole with at least one fluoro comonomer selected from one or more of ten defined classes having a recited minimum mole proportion of perfluoro-2,2-dimethyl-1,3-dioxole, in no event less than 65%, have high glass transition temperatures of 140.degree. C. or higher, low indices of refraction, and good physical properties, and low dielectric constants, which make them suitable for cladding optical fibers as well as for many electronics applications, including the manufacture of substrates for circuit boards. They all are soluble at room temperature in perfluoro(2-butyltetrahydrofuran), which makes it practical to apply them as coatings from solution.Type: GrantFiled: March 29, 1990Date of Patent: March 19, 1991Assignee: E. I. du Pont de Nemours and CompanyInventor: Edward N. Squire
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Patent number: 4999248Abstract: Articles made from amorphous dipolymers of perfluoro-2,2-dimethyl-1,3-dioxole with tetrafluoroethylene having high glass transition temperatures of 140.degree. C. or higher, low indices of refraction, and good physical properties, and low dielectric constants, include, among others, substrates for circuit boards, composites, sheets and films, optical lenses, and electronic current carrying devices.Type: GrantFiled: April 9, 1990Date of Patent: March 12, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventor: Edward N. Squire
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Patent number: 4985308Abstract: Articles made from amorphous dipolymers of perfluoro-2,2-dimethyl-1,3-dioxole with tetrafluoroethylene having high glass transition temperatures of 140.degree. C. or higher, low indices of refraction, and good physical properties, and low dielectric constants, include, among others, substrates for circuit boards, composites, sheets and films, optical lenses, and electronic current carrying devices.Type: GrantFiled: April 9, 1990Date of Patent: January 15, 1991Assignee: E. I. du Pont de Nemours and CompanyInventor: Edward N. Squire
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Patent number: 4982056Abstract: Amorphous copolymers of perfluoro-2,2-dimethyl-1,3-dioxole with at least one fluoro comonomer selected from one or more of ten defined classes having a recited minimum mole proportion of perfluoro-2,2-dimethyl-1,3-dioxole, in no event less than 65%, have high glass transition temperatures of 140.degree. C. or higher, low indices of refraction, and good physical properties, and low dielectric constants, which make them suitable for caldding optical fibers as well as for many electronics applications, including the manufacture of substrates for circuit boards. They all are soluble at room temperature in perfluoro(2-butyltetrahydrofuran), which makes it practical to apply them as coatings from solution.Type: GrantFiled: March 29, 1990Date of Patent: January 1, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventor: Edward N. Squire
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Patent number: 4977026Abstract: Amorphous copolymers of perfluoro-2,2-dimethyl-1,3-dioxole with at least one fluoro comonomer selected from one or more of ten defined classes having a recited minimum mole proportion of perfluoro-2,2-dimethyl-1,3-dioxole, in no event less than 65%, have high glass transition temperatures of 140.degree. C. or higher, low indices of refraction, and good physical properties, and low dielectric constants, which make them suitable for cladding optical fibers as well as for many electronics applications, including the manufacture of substrates for circuit boards. They all are soluble at room temperature in perfluoro(2-butyltetrahydrofuran), which makes it practical to apply them as coatings from solution.Type: GrantFiled: March 29, 1990Date of Patent: December 11, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventor: Edward N. Squire
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Patent number: 4977297Abstract: Articles made from amorphous dipolymers of perfluoro-2,2-dimethyl-1,3-dioxole with tetrafluoroethylene having high glass transition temperatures of 140.degree. C. or higher, low indices of refraction, and good physical properties, and low dielectric constants, include, among others, substrates for circuit boards, composites, sheets and films, optical lenses, and electronic current carrying devices.Type: GrantFiled: April 9, 1990Date of Patent: December 11, 1990Assignee: E. I. du Pont de Nemours and CompanyInventor: Edward N. Squire
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Patent number: 4977008Abstract: Amorphous copolymers of perfluoro-2,2-dimethyl-1,3-dioxole with at least one fluoro comonomer selected from one or more of ten defined classes having a recited minimum mole proportion of perfluoro-2,2-dimethyl-1,3-dioxole, in no event less than 65%, have high glass transition temperatures of 140.degree. C. or higher, low indices of refraction, and good physical properties, and low dielectric constants, which make them suitable for cladding optical fibers as well as for many electronics applications, including the manufacture of substrates for circuit boards. They all are soluble at room temperature in perfluoro(2-butyltetrahydrofuran), which makes it practical to apply them as coatings from solution.Type: GrantFiled: March 29, 1990Date of Patent: December 11, 1990Assignee: E. I Du Pont de Nemours and CompanyInventor: Edward N. Squire
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Patent number: 4977025Abstract: Amorphous copolymers of perfluoro-2,2-dimethyl-1,3-dioxole with at least one fluoro comonomer selected from one or more of ten defined classes having a recited minimum mole proportion of perfluoro-2,2-dimethyl-1,3-dioxole, in no event less than 65%, have high glass transition temperatures of 140.degree. C. or higher, low indicies of refraction, and good physical properties, and low dielectric constants, which make them suitable for cladding optical fibers as well as for many electronics applications, including the manufacture of substrates for circuit boards. They all are soluble at room temperature in perfluoro(2-butyltetrahydrofuran), which makes it practical to apply them as coatings from solution.Type: GrantFiled: March 29, 1990Date of Patent: December 11, 1990Assignee: E. I Du Pont de Nemours and CompanyInventor: Edward N. Squire
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Patent number: 4975505Abstract: Amorphous copolymers of perfluoro-2,2-dimethyl-1,3-dioxole with at least one fluoro comonomer selected from one or more of ten defined classes having a recited minimum mole proportion of perfluoro-2,2-dimethyl-1,3-dioxole, in no event less than 65%, have high glass transition temperatures of 140.degree. C. or higher, low indices of refraction, and good physical properties, and low dielectric constants, which make them suitable for cladding optical fibers as well as for many electronics applications, including the manufacture of substrates for circuit boards. They all are soluble at room temperature in perfluoro(2-butyltetrahydrofuran), which makes it practical to apply them as coatings from solution.Type: GrantFiled: March 29, 1990Date of Patent: December 4, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventor: Edward N. Squire
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Patent number: 4973142Abstract: Articles made from amorphous dipolymers of perfluoro-2,2-dimethyl-1,3-dioxole with tetrafluoroethylene having high glass transition temperatures of 140.degree. C. or higher, low indices of refraction, and good physical properties, and low dielectric constants, include, among others, substrates for circuit boards, composites, sheets and films, optical lenses, and electronic current carrying devices.Type: GrantFiled: April 9, 1990Date of Patent: November 27, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventor: Edward N. Squire
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Patent number: 4948851Abstract: Articles made from amorphous dipolymers of perfluoro-2,2-dimethyl-1,3-dioxole with tetrafluoroethylene having high glass transition temperatures of 140.degree. C. or higher, low indices of refraction, and good physical properties, and low dielectric constants, include, among others, substrates for circuit boards, composites, sheets and films, optical lenses, and electronic current carrying devices.Type: GrantFiled: December 28, 1989Date of Patent: August 14, 1990Assignee: E. I. du Pont de Nemours and CompanyInventor: Edward N. Squire
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Patent number: 4935477Abstract: Amorphous copolymers of perfluoro-2,2-dimethyl-1,3-dioxole with at least one fluoro comonomer selected from one or more of ten defined classes having a recited minimum mole proportion of perfluoro-2,2-dimethyl-1,3-dioxole, in no event less than 65%, have high glass transition temperatures of 140.degree. C. or higher, low indices of refraction, and good physical properties, and low dielectric constants, which make them suitable for cladding optical fibers as well as for many electronics applications, including the manufacture of substrates for circuit boards. They all are soluble at room temperature in perfluoro(2-butyltetrahydrofuran), which makes it practical to apply them as coatings from solution.Type: GrantFiled: June 5, 1989Date of Patent: June 19, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventor: Edward N. Squire
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Patent number: 4754009Abstract: Amorphous copolymer of perfluoro-2,2-dimethyl-1,3-dioxide with at least one fluoro comonomer selected from one or more of ten defined classes having a recited minimum mole proportion of perfluoro-2,2-dimethyl-1,3-dioxole, in no event less than 65%, have high glass transition temperatures of 140.degree. C. or higher, low indices of refraction, and good physical properties, and low dielectric constants, which make them suitable for cladding optical fibers as well as for many electronics applications, including the manufacture of subtrates for circuit boards. They all are soluble at room temperature in perfluoro (2-butyltetrahydrofuran), which makes it practical to apply them as coatings from solution.Type: GrantFiled: September 4, 1986Date of Patent: June 28, 1988Assignee: E. I. Du Pont De Nemours and CompanyInventor: Edward N. Squire
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Patent number: 4560778Abstract: Perfluoro(2,2-dimethyl-1,3-dioxole) forms oligomers on standing in the presence of an ether. The preferred ethers are aliphatic and cycloaliphatic, especially tetrahydrofuran. Free radical generators, especially peroxydicarbonates, may be added to the reaction medium. The oligomers have a degree of polymerization of about 2-8. They are useful as lubricants, hydraulic fluids, heat transfer agents, and plasticizers, and as intermediates to oligomeric acid fluorides and acids, which acids are useful surfactants.Type: GrantFiled: September 14, 1984Date of Patent: December 24, 1985Assignee: E. I. Du Pont de Nemours and CompanyInventor: Edward N. Squire
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Patent number: 4558141Abstract: Perfluoro-1,3-dioxole is a useful monomer, which polymerizes to either amorphous or liquid homopolymers and copolymerizes with tetrafluoroethylene as well as with other monomers to both crystalline and amorphous copolymers having one or more such comonomers incorporated therein. Amorphous homopolymers and copolymers of perfluoro-1,3-dioxole are useful in such applications as glazing for reactors for hydrogen fluoride reactions. Amorphous homopolymers and amorphous or crystalline copolymers form self-supporting films and can be used for coatings and linings which are inert to most chemicals and are stain and weather resistant and as dielectrics for electrical and electronic equipment. Liquid homopolymers can be used as hydraulic fluids and heat exchange media.Type: GrantFiled: April 11, 1985Date of Patent: December 10, 1985Assignee: E. I. Du Pont de Nemours and CompanyInventor: Edward N. Squire
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Patent number: 4540799Abstract: Perfluoro(2,2-dimethyl-1,3-dioxole) forms oligomers on standing in the presence of an ether. The preferred ethers are aliphatic and cycloaliphatic, especially tetrahydrofuran. Free radical generators, especially peroxydicarbonates, may be added to the reaction medium. The oligomers have a degree of polymerization of about 2-8. They are useful as lubricants, hydraulic fluids, heat transfer agents, and plasticizers, and as intermediates to oligomeric acid fluorides and acids, which acids are useful surfactants.Type: GrantFiled: June 11, 1984Date of Patent: September 10, 1985Assignee: E. I. Du Pont de Nemours and CompanyInventor: Edward N. Squire
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Patent number: 4535175Abstract: Novel fluorodioxoles which may have Cl or F substituents in the 4 or 5 positions and have two F or CF.sub.3 substituents in the 2 position are useful monomers for the preparation of homopolymers and copolymers with tetrafluoroethylene and terpolymers with tetrafluoroethylene and vinylidene fluoride. The homopolymers are suitable for glazing materials, while copolymers are useful, among others, for corrosion-resistant seals, gaskets, and linings.Type: GrantFiled: April 18, 1984Date of Patent: August 13, 1985Assignee: E. I. Du Pont de Nemours and CompanyInventor: Edward N. Squire
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Patent number: 4533741Abstract: Perfluoro-1,3-dioxole, prepared by dechlorinating 4,5-dichloro-2,2,4,5-tetrafluoro-1,3-dioxolane with magnesium, is a useful monomer, which polymerizes to either amorphous or liquid homopolymers and copolymerizes with tetrafluoroethylene as well as with other monomers to both crystalline and amorphous copolymers having one or more such comonomers incorporated therein. Amorphous homopolymers and copolymers of perfluoro-1,3-dioxole are useful in such applications as glazing for reactors for hydrogen fluoride reactions. Amorphous homopolymers and amorphous or crystalline copolymers form self-supporting films and can be used for coatings and linings which are inert to most chemicals and are stain and weather resistant and as dielectrics for electrical and electronic equipment. Liquid homopolymers can be used as hydraulic fluids and heat exchange media.Type: GrantFiled: October 9, 1984Date of Patent: August 6, 1985Assignee: E. I. Dupont De Nemours and CompanyInventor: Edward N. Squire
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Optical fibers comprising cores clad with amorphous copolymers of perfluoro-2,2-dimethyl-1,3-dioxole
Patent number: 4530569Abstract: Amorphous copolymers of perfluoro-2,2-dimethyl-1,3-dioxole with tetrafluoroethylene and, optionally, with another ethylenically unsaturated monomer, have high glass transition temperatures, e.g., 85.degree. C. or higher, low indices of refraction, and good physical properties which make them suitable for cladding optical fibers.Type: GrantFiled: March 20, 1984Date of Patent: July 23, 1985Assignee: E. I. Du Pont de Nemours and CompanyInventor: Edward N. Squire