Patents by Inventor Richard W. Blevins
Richard W. Blevins 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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Publication number: 20030013830Abstract: This invention relates to a method of preparing a thiosulfate salt containing polymer comprising reacting at least one thiosulfate salt with at least one halogenated styrenic monomer to form a styrenic thiosulfate salt monomer represented by Formula (1); 1Type: ApplicationFiled: April 25, 2002Publication date: January 16, 2003Inventors: Richard W. Blevins, Shiying Zheng
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Patent number: 6420505Abstract: This invention relates to a method of preparing a thiosulfate salt containing polymer comprising reacting at least one thiosulfate salt with at least one halogenated styrenic monomer to form a styrenic thiosulfate salt monomer represented by Formula (1); wherein X is a cationic counter ion; R1 is a substituent; and R2 is a divalent linking group; and polymerizing the styrenic thiosulfate salt monomer in the presence of an initiator.Type: GrantFiled: June 20, 2001Date of Patent: July 16, 2002Assignee: Eastman Kodak CompanyInventors: Richard W. Blevins, Shiying Zheng
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Patent number: 5446106Abstract: Copolymers are produced when a 4-vinyl-1,3 dioxolane monomer is copolymerized with an imidized maleic anhydride (for example, maleimide) monomer in the presence of a free radical initiator. Alternatively, a maleamic acid or maleimide functionality may be introduced into a copolymer containing a 4-vinyl-1,3 dioxolane and maleic anhydride by introducing a primary amine into the reaction mixture. Also, the dioxolane reactant may be introduced into the polymer by reacting 3,4-epoxy-1-butene in a ketone reaction solvent. The structure and composition of the product copolymer are controlled by both the sequence and conditions of the reaction. Products of the present invention can be cast as clear films and can also be used as reactive polymers.Type: GrantFiled: January 3, 1995Date of Patent: August 29, 1995Assignee: Eastman Chemical CompanyInventors: Richard W. Blevins, S. Richard Turner
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Patent number: 5418294Abstract: Copolymers are produced when a 4-vinyl-1,3 dioxolane monomer is copolymerized with an imidized maleic anhydride (for example, maleimide) monomer in the presence of a free radical initiator. Alternatively, a maleamic acid or maleimide functionality may be introduced into a copolymer containing a 4-vinyl-1,3 dioxolane and maleic anhydride by introducing a primary amine into the reaction mixture. Also, the dioxolane reactant may be introduced into the polymer by reacting 3,4-epoxy-1-butene in a ketone reaction solvent. The structure and composition of the product copolymer are controlled by both the sequence and conditions of the reaction. Products of the present invention can be cast as clear films and can also be used as reactive polymers.Type: GrantFiled: January 24, 1994Date of Patent: May 23, 1995Assignee: Eastman Chemical CompanyInventors: Richard W. Blevins, S. Richard Turner
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Patent number: 5338813Abstract: Copolymers are produced when a 4-vinyl-1,3-dioxolane monomer is copolymerized with an imidized maleic anhydride (for example, maleimide) monomer in the presence of a free radical initiator. Alternatively, a maleamic acid or maleimide functionality may be introduced into a copolymer containing a 4-vinyl-1,3-dioxolane and maleic anhydride by introducing a primary amine into the reaction mixture. Also, the dioxolane reactant may be introduced into the polymer by reacting 3,4-epoxy-1-butene in a ketone reaction solvent. The structure and composition of the product copolymer are controlled by both the sequence and conditions of the reaction. Products of this invention can be cast as clear films and can also be used as reactive polymers.Type: GrantFiled: January 24, 1994Date of Patent: August 16, 1994Assignee: Eastman Chemical CompanyInventors: Richard W. Blevins, S. Richard Turner
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Patent number: 5328971Abstract: Copolymers are produced when a 3,4-epoxy-1-butene monomer is copolymerized with a maleimide monomer in the presence of a free radical initiator. The copolymerization involves both 1,2-propagation and 1,4-propagation of 3,4-epoxy-1-butene. Products of this invention can be cast as clear films and can also be used as reactive polymers.Type: GrantFiled: January 10, 1994Date of Patent: July 12, 1994Assignee: Eastman Kodak CompanyInventors: Richard W. Blevins, S. Richard Turner
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Patent number: 5310839Abstract: Copolymers are produced when a 4-vinyl-1,3-dioxolane monomer is copolymerized with an imidized maleic anhydride (for example, maleimide) monomer in the presence of a free radical initiator. Alternatively, a maleamic acid or maleimide functionality may be introduced into a copolymer containing a 4-vinyl-1,3-dioxolane and maleic anhydride by introducing a primary amine into the reaction mixture. Also, the dioxolane reactant may be introduced into the polymer by reacting 3,4-epoxy-1-butene in a ketone reaction solvent. The structure and composition of the product copolymer are controlled by both the sequence and conditions of the reaction. Products of this invention can be cast as clear films and can also be used as reactive polymers.Type: GrantFiled: December 30, 1992Date of Patent: May 10, 1994Assignee: Eastman Chemical CompanyInventors: Richard W. Blevins, S. Richard Turner
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Patent number: 5304611Abstract: Copolymers are produced when a 4-vinyl-1,3 dioxolane monomer is copolymerized with an imidized maleic anhydride (for example, maleimide) monomer in the presence of a free radical initiator. Alternatively, a maleamic acid or maleimide functionally may be introduced into a copolymer containing a 4-vinyl-1,3 dioxolane and maleic anhydride by introducing a primary amine into the reaction mixture. Also, the dioxolane reactant may be introduced into the polymer by reacting 3,4-epoxy-1-butene in a ketone reaction solvent. The structure and composition of the product copolymer are controlled by both the sequence and conditions of the reaction. Products of the present invention can be cast as clear films and can also be used as reactive polymers.Type: GrantFiled: December 30, 1992Date of Patent: April 19, 1994Assignee: Eastman Kodak CompanyInventors: Richard W. Blevins, S. Richard Turner
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Patent number: 5302680Abstract: Copolymers are produced when a 3,4-epoxy-1-butene monomer is copolymerized with a maleimide monomer in the presence of a free radical initiator. The copolymerization involves both 1,2-propagation and 1,4-propagation of 3,4-epoxy-1-butene. Products of this invention can be cast as clear films and can also be used as reactive polymers.Type: GrantFiled: December 30, 1992Date of Patent: April 12, 1994Assignee: Eastman Kodak CompanyInventors: Richard W. Blevins, S. Richard Turner
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Patent number: 5266679Abstract: A method for preparing a polymer including the step of reacting carbon monoxide and a reactant pair having respective general formulas ##STR1## a reactant having the general formula ##STR2## in the presence of catalyst and free iodo or bromo ions. X is --Br or --I. n is an integer from 0 to 4. R.sup.1 is selected from the group consisting of alkyl, arylalkyl, aryl, heteroaryl, and cycloalkyl. R.sup.2 is selected from the group consisting of ##STR3## wherein each R.sup.5 is independently selected from the group consisting of alkyl and aryl, m is an integer from 1-12, and j is an integer between 0 and 300.Type: GrantFiled: August 30, 1991Date of Patent: November 30, 1993Assignee: Eastman Kodak CompanyInventors: Robert R. Perry, S. Richard Turner, Richard W. Blevins
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Patent number: 5266678Abstract: A method for preparing a polymer including the step of reacting carbon monoxide and a reactant pair having respective general formulas ##STR1## and or a reactant having the general formula ##STR2## in the presence of catalyst and free iodo or bromo ions. X is a nonortho halide selected from --Br and --I. n is an integer from 0 to 4. R.sup.1 is selected from the group consisting of alkyl, arylalkyl, aryl, heteroaryl, and cycloalkyl. R.sup.2 is selected from the group consisting of ##STR3## and Each R.sup.5 is independently selected from the group consisting of alkyl and aryl, m is an integer from 1-12, and j is an integer between 0 and 300. R.sup.3 is selected from the group consisting of substituted aryl, unsubstituted aryl, substituted heteroaryl, and unsubstituted heteroaryl.Type: GrantFiled: August 30, 1991Date of Patent: November 30, 1993Assignee: Eastman Kodak CompanyInventors: Robert J. Perry, S. Richard Turner, Richard W. Blevins
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Patent number: 5216118Abstract: A method for preparing polyimides comprising reacting carbon monoxide, a primary diamine and a reactant selected from the group consisting of bis(o-iodoaromatic ester)s and bis(o-bromoaromatic ester)s, in the presence of solvent and catalyst, said catalyst being a compound of a metal seIected from the group consisting of platinum, palladium and nickel.Type: GrantFiled: February 25, 1992Date of Patent: June 1, 1993Assignee: Eastman Kodak CompanyInventors: Robert J. Perry, S. Richard Turner, Richard W. Blevins
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Patent number: 5214127Abstract: A process for the preparation of aromatic polyamides comprises reacting carbon monoxide and an aromatic iodoamine characterized by having at least one iodine atom covalently bonded to an aromatic ring and at least one amino group. The process is conducted in the presence of a solvent, a catalyst and a base at a pressure greater than about 1 kg/cm.sup.2.Type: GrantFiled: February 25, 1992Date of Patent: May 25, 1993Assignee: Eastman Kodak CompanyInventors: Robert J. Perry, S. Richard Turner, Richard W. Blevins
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Patent number: 5214123Abstract: A method for preparing poly(imide-amide)s comprising reacting carbon monoxide, an aromatic or heteroaromatic diamine, and an aromatic or heteroaromatic di(trifluoromethane sulfonate), in the presence of solvent and a catalyst One of the aromatic reactants has a nucleus including a phthalimide ring system. The catalyst is a compound of a metal selected from the group consisting of platinum, palladium and nickel.Type: GrantFiled: February 25, 1992Date of Patent: May 25, 1993Assignee: Eastman Kodak CompanyInventors: Robert J. Perry, S. Richard Turner, Richard W. Blevins
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Patent number: 5149824Abstract: There is provided a method for the production of an arylamide bisnadimide. The arylamide bisnadimide is useful as a prepolymer. The method includes the step of: condensing a nadimide compound having the nitrogen of said nadimide substituted with a halogen substituted aromatic group, with a dinucleophile in the presence of carbon monoxide, a base and a palladium catalyst.Type: GrantFiled: July 1, 1991Date of Patent: September 22, 1992Assignee: Eastman Kodak CompanyInventors: S. Richard Turner, Robert J. Perry, Richard W. Blevins
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Patent number: 5104971Abstract: A process for the preparation of aromatic polyamides comprises reacting carbon monoxide, a diamine and an aromatic polyiodide having at least two iodine atoms covalently bonded to an aromatic ring in non-ortho positions. The process is conducted in the presence of a solvent, a catalyst and a base at a pressure greater than about 15 psia (1.05 kg/cm.sup.2).Type: GrantFiled: June 1, 1990Date of Patent: April 14, 1992Assignee: Eastman Kodak CompanyInventors: Robert J. Perry, S. Richard Turner, Richard W. Blevins
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Patent number: 5077365Abstract: Copolymers are made by reacting maleic anhydride or a related compound with a 4-vinyl-1,3-dioxolane in the presence of a free radical initiator. The dioxolane reactant can be made by reacting a ketone with 3,4-epoxy-1-butene, or a substituted derivative thereof.Type: GrantFiled: August 24, 1990Date of Patent: December 31, 1991Assignee: Eastman Kodak CompanyInventors: Richard W. Blevins, S. Richard Turner
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Patent number: 5071931Abstract: Copolymers are produced when 3,4-epoxy-1-butene (EpB) is copolymerized with maleic anhydride. The copolymerization is initiated by free radicals, and comprises both 1,2-propagation and 1,5-propagation of EpB. When an ether is used as the reaction solvent, the product is soluble, and essentially composed of (a) a monomer derived from maleic anhydride, and (b) two monomers derived from EpB. When the reaction solvent is a ketone, the polymer product is also soluble, and additionally contains (c) a moiety derived from a dioxolane formed in situ. When the reaction is conducted in the presence of a non polar (e.g., hydrocarbon or a halocarbon) solvent, or neat (i.e., in the absence of a solvent), the polymer product is insoluble in common organic solvents and contains (d) a symmetrical EpB dimer. This dimer apparently does not form, or is formed to only a very slight extent, when the polymerization is conducted in polar reaction solvents.Type: GrantFiled: April 4, 1991Date of Patent: December 10, 1991Assignee: Eastman Kodak CompanyInventors: Richard W. Blevins, S. Richard Turner
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Patent number: 5071932Abstract: Copolymers are produced when 3,4-epoxy-1-butene (EpB) is copolymerized with maleic anhydride. The copolymerization is initiated by free radicals, and comprises both 1,2-propagation and 1,5-propagation of EpB. When an ether is used as the reaction solvent, the product is soluble, and essentially composed of (a) a monomer derived from maleic anhydride, and (b) two monomers derived from EpB. When the reaction solvent is a ketone, the polymer product is also soluble, and additionally contains (c) a moiety derived from a dioxolane formed in situ. When the reaction is conducted in the presence of a non polar (e.g., hydrocarbon or a halocarbon) solvent, or neat (i.e., in the absence of a solvent), the polymer product is insoluble in common organic solvents and contains (d) a symmetrical EpB dimer. This dimer apparently does not form, or is formed to only a very slight extent, when the polymerization is conducted in polar reaction solvents.Type: GrantFiled: April 4, 1991Date of Patent: December 10, 1991Assignee: Eastman Kodak CompanyInventors: Richard W. Blevins, S. Richard Turner
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Patent number: 5071930Abstract: Copolymers are produced when 3,4-epoxy-1-butene (EpB) is copolymerized with maleic anhydride. The copolymerization is initiated by free radicals, and comprises both 1,2-propagation and 1,5-propagation of EpB. When an ether is used as the reaction solvent, the product is soluble, and essentially composed of (a) a monomer derived from maleic anhydride, and (b) two monomers derived from EpB. When the reaction solvent is a ketone, the polymer product is also soluble, and additionally contains (c) a moiety derived from a dioxolane formed in situ. When the reaction is conducted in the presence of a non polar (e.g., hydrocarbon or a halocarbon) solvent, or neat (i.e., in the absence of a solvent), the polymer product is insoluble in common organic solvents and contains (d) a symmetrical EpB dimer. This dimer apparently does not form, or is formed to only a very slight extent, when the polymerization is conducted in polar reaction solvents.Type: GrantFiled: April 4, 1991Date of Patent: December 10, 1991Assignee: Eastman Kodak CompanyInventors: Richard W. Blevins, S. Richard Turner