Patents by Inventor Charles V. Hedges
Charles V. Hedges 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: 4663434Abstract: Novel heat resistant polycarbonates are provided which are the polymerized reaction products of:(i) a carbonate precursor; and(ii) at least one dihydric phenol selected from dihydric phenols represented by the general formulae ##STR1## wherein: each R.sup.1 is independently selected from halogen radicals, monovalent hydrocarbon radicals, and monovalent hydrocarbonoxy radicals;each R.sup.2 is independently selected from halogen radicals, monovalent hydrocarbon radicals, and monovalent hydrocarbonoxy radicals;R.sup.4 and R.sup.5 are independently selected from monovalent hydrocarbon radicals;R.sup.3 is selected from hydrogen and monovalent hydrocarbon radicals, with the proviso that if R.sup.3 is a hydrogen radical than at least one of the monovalent hydrocarbon radicals represented by R.sup.4 and R.sup.5 contains at least two carbon atoms;R.sup.7 is selected from hydrogen and monovalent hydrocarbon radicals;R.sup.Type: GrantFiled: March 1, 1985Date of Patent: May 5, 1987Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4638036Abstract: Linear thermoplastic polycarbonates derived from:(i) a carbonate precursor; and(ii) at least one dihydric phenol represented by the general formula ##STR1## wherein R is independently selected from hydrogen and lower alkyl radicals,X is selected from monocyclic cycloalkylidene radicals containing from 8 to about 16 ring carbon atoms, andn and n' are independently selected from whole numbers having a value of from 0 to 2 inclusive, with the proviso that the sum of n plus n' is at least one.Type: GrantFiled: September 6, 1985Date of Patent: January 20, 1987Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4638027Abstract: Thermoplastic, linear, high molecular weight, end-capped aromatic polycarbonate polymers exhibiting improved heat resistance derived from:(i) a carbonate precursor; and(ii) at least one dihydric phenol represented by the general formula ##STR1## wherein X is selected from monocyclic cycloalkylidene radicals containing from 10 to about 16 ring carbon atoms. These polycarbonate polymers have an intrinsic viscosity in methylene chloride at 25.degree. C. of at least 0.38 dl./gm.Type: GrantFiled: December 20, 1984Date of Patent: January 20, 1987Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4620950Abstract: A process for preparing aryl sulfone sulfonic acids by reacting an aryl sulfone in the molten state with sulfur trioxide under substantially anhydrous conditions.Type: GrantFiled: September 11, 1981Date of Patent: November 4, 1986Assignee: General Electric CompanyInventors: Charles V. Hedges, Victor Mark
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Patent number: 4576996Abstract: Novel heat resistant polycarbonates are provided which are the polymerized reaction products of:(i) a carbonate precursor; and(ii) at least one dihydric phenol selected from dihydric phenols represented by the general formulae ##STR1## wherein: each R.sup.1 is independently selected from halogen radicals, monovalent hydrocarbon radicals, and monovalent hydrocarbonoxy radicals;each R.sup.2 is independently selected from halogen radicals, monovalent hydrocarbon radicals, and monovalent hydrocarbonoxy radicals;R.sup.4 and R.sup.5 are independently selected from monovalent hydrocarbon radicals;R.sup.3 is selected from hydrogen and monovalent hydrocarbon radicals, with the proviso that if R.sup.3 is a hydrogen radical then at least one of the monovalent hydrocarbon radicals represented by R.sup.4 and R.sup.5 contains at least two carbon atoms;R.sup.7 is selected from hydrogen and monovalent hydrocarbon radicals;R.sup.Type: GrantFiled: March 1, 1985Date of Patent: March 18, 1986Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4562242Abstract: High molecular weight, thermoplastic, randomly branched polycarbonates of an aromatic dihydric phenol, a carbonate precursor, and a chain branching agent comprising at least one compound selected from the formula: ##STR1## where A is selected from alkylene radicals from 1 to 6 carbons, alkylidene radicals from 2 to 6 carbons, cycloalkylene radicals and cycloalkylidene radicals containing from 4 to 6 carbon atoms;R and R' are independently selected from halogen radicals, monovalent hydrocarbon radicals of from 1 to 4 carbon atoms, and monovalent hydrocarbonoxy radicals of from 1 to 4 carbon atoms;n is an integer having a value of 0 or 1; andp and p' are integers having a value of 0 or 1.Type: GrantFiled: December 24, 1984Date of Patent: December 31, 1985Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4560808Abstract: A transalkylation process for the preparation of dihydric phenols comprising reacting, in the presence of an acid or base catalyst, at least one mole of an aromatic monohydroxy compound such as a phenol with at least one mole of an aromatic dihydroxy compound such as a dihydric phenol, thereby forming at least one dihydric phenol which is different than said aromatic dihydroxy compound.Type: GrantFiled: January 2, 1985Date of Patent: December 24, 1985Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4554330Abstract: Linear thermoplastic polycarbonates derived from:(i) a carbonate precursor; and(ii) at least one dihydric phenol represented by the general formula ##STR1## wherein R is independently selected from hydrogen and lower alkyl radicals,X is selected from monocyclic cycloalkylidene radicals containing from 8 to about 16 ring carbon atoms, andn and n' are independently selected from whole numbers having a value of from 0 to 2 inclusive, with the proviso that the sum of n plus n' is at least one.Type: GrantFiled: June 18, 1984Date of Patent: November 19, 1985Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4554309Abstract: Thermoplastic polymer exhibiting improved heat resistance comprised of the polymerized reaction products of (i) a carbonate precursor, and (ii) at least one dihydric phenol represented by the general formula ##STR1## wherein: R is independently selected from alkyl radicals;R.sup.1 is independently selected from monovalent hydrocarbon radicals;X is selected from cycloalkylidene radicals containing from 8 to about 16 ring carbon atoms;each n is two; andm represents a whole number having a value of from 0 up to the number of replaceable hydrogen atoms present on X.Type: GrantFiled: June 14, 1984Date of Patent: November 19, 1985Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4547564Abstract: Aromatic copolyester-carbonates derived from a carbonate precursor, at least one difunctional carboxylic acid or a reactive derivative thereof, and at least one branched alkylidene dihydric phenol represented by the general formula ##STR1## wherein: R and R' are independently selected from halogen and monovalent hydrocarbon radicals;R.sup.1 and R.sup.3 are independently selected from hydrogen and alkyl radicals;R.sup.2 is selected from alkyl radicals, with the proviso that if R.sup.1 and R.sup.3 are both hydrogen then R.sup.2 is selected from branched alkyl radicals containing at least three carbon atoms; andn and n' are independently selected from whole numbers having a value of from 0 to 4 inclusive.These copolyester-carbonates are useful in making molded articles, films, and the like.Type: GrantFiled: April 12, 1984Date of Patent: October 15, 1985Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4535191Abstract: Novel polycarbonates are provided which exhibit rubbery and elastomeric properties which are the polymerized reaction products of:(i) a carbonate precursor; and(ii) at least one dihydric phenol represented by the general formula ##STR1## wherein R is selected from straight chain alkyl radicals containing from 8 to about 30 carbon atoms;each R.sup.1 is independently selected from halogen monovalent hydrocarbon, and monovalent hydrocarbonoxy radicals;each R.sup.2 is independently selected from halogen, monovalent hydrocarbon, and monovalent hydrocarbonoxy radicals; andn and n' are independently selected from whole numbers having a value of from 0 to 4 inclusive.Type: GrantFiled: February 23, 1984Date of Patent: August 13, 1985Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4520187Abstract: Novel heat resistant polycarbonates are provided which are the polymerized reaction products of:(i) a carbonate precursor; and(ii) at least one dihydric phenol selected from dihydric phenols represented by the general formulae ##STR1## wherein: each R.sup.1 is independently selected from halogen radicals, monovalent hydrocarbon radicals, and monovalent hydrocarbonoxy radicals;each R.sup.2 is independently selected from halogen radicals, monovalent hydrocarbon radicals, and monovalent hydrocarbonoxy radicals;R.sup.4 and R.sup.5 are independently selected from monovalent hydrocarbon radicals;R.sup.3 is selected from hydrogen and monovalent hydrocarbon radicals, with the proviso that if R.sup.3 is a hydrogen radical than at least one of the monovalent hydrocarbon radicals represented by R.sup.4 and R.sup.5 contains at least two carbon atoms;R.sup.7 is selected from hydrogen and monovalent hydrocarbon radicals;R.sup.Type: GrantFiled: December 17, 1982Date of Patent: May 28, 1985Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4487896Abstract: Copolyester-carbonate resin compositions exhibiting improved processability comprised of (i) at least one copolyester-carbonate resin derived from (a) a carbonate precursor; (b) at least one difunctional carboxylic acid or a reactive derivative thereof; and (c) at least one dihydric phenol wherein the bridging divalent hydrocarbon group connecting the two aromatic residues is represented by the general formula ##STR1## wherein R represents a straight chain alkyl radical containing from 1 to 5 carbon atoms.Type: GrantFiled: September 2, 1983Date of Patent: December 11, 1984Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4477647Abstract: Polyarylate resin compositions exhibiting flame retardancy comprised of at least one polyarylate resin derived from:(i) at least one aromatic dicarboxylic acid or a reactive derivative thereof; and(ii) from about 1 to 100 weight percent of at least one thiodiphenol and from 0 to about 99 weight percent of at least one dihydric phenol, based on the total amount of thiodiphenol and dihydric phenol.Type: GrantFiled: August 30, 1983Date of Patent: October 16, 1984Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4474999Abstract: This invention relates to phenolic compounds that have utility as branching agents for the manufacture of randomly branched polycarbonates.Type: GrantFiled: October 17, 1983Date of Patent: October 2, 1984Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4469861Abstract: Aromatic polycarbonates derived from (i) a carbonate precursor, and (ii) at least one dihydric phenol represented by the general formula ##STR1## wherein: R and R' are independently selected from halogen radicals and monovalent hydrocarbon radicals;R.sup.1 is selected from hydrogen and alkyl radicals;R.sup.3 is selected from hydrogen and alkyl radicals;R.sup.2 is selected from alkyl radicals, with the proviso that when both R.sup.1 and R.sup.3 are hydrogen then R.sup.2 is selected from branched alkyl radicals containing at least three carbon atoms; andn and n' are independently selected from whole numbers having a value of from 0 to 4 inclusive.These polycarbonates are useful in the production of molded articles, films, and sheets.Type: GrantFiled: December 27, 1982Date of Patent: September 4, 1984Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4467121Abstract: Fluorinated bisphenols having a fluorinated alkyl group and a hydrogen atom upon the methylene carbon atom are prepared at atmospheric pressure or at low pressures from a phenol reactant and a fluorinated aldehyde compound in the presence of gaseous hydrogen chloride or gaseous hydrogen bromide catalyst. The fluorinated bisphenols having the fluorinated alkyl group and a hydrogen atom upon the methylene carbon atom are produced in excellent yields and are used for making flame-retardant polycarbonates and polyester-carbonate copolymers.Type: GrantFiled: July 26, 1982Date of Patent: August 21, 1984Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4463160Abstract: Polyarylates derived from (i) at least one aromatic dicarboxylic acid, and (ii) at least one branched dihydric phenol wherein branching occurs on the carbon atom adjacent the benzylic carbon atom.Type: GrantFiled: December 17, 1982Date of Patent: July 31, 1984Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4463161Abstract: Polyarylate resins derived from (i) an aromatic dicarboxylic acid; and (ii) a branched alkylidene dihydric phenol, wherein branching occurs on a carbon atom of the alkylidene radical which is at least one carbon atom removed from the benzylic carbon atom bridging the two phenolic residues.Type: GrantFiled: December 27, 1982Date of Patent: July 31, 1984Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges
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Patent number: 4454308Abstract: There are provided novel polyarylates exhibiting rubbery or elastomeric properties which are derived from (i) at least one aromatic dicarboxylic acid or a reactive derivative thereof, and (ii) at least one dihydricphenol which contains as the briding group joining the aromatic residues a long straight chain 1,1-alkylidene radical.Type: GrantFiled: December 6, 1982Date of Patent: June 12, 1984Assignee: General Electric CompanyInventors: Victor Mark, Charles V. Hedges