Patents Represented by Attorney, Agent or Law Firm Hilmar L. Fricke
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Patent number: 4902557Abstract: A thermoplastic polyolefin composite that is useful as an exterior auto or truck body part has the following layers of components:a. a layer of a glossy clear thermoplastic finish bonded firmly tob. a layer of a thermoplastic pigment containing paint firmly bonded toc. a thin size layer of a thermoplastic chlorinated polyolefin that is firmly bonded tod. a flexible sheet of a thermoplastic polyolefin resin.A thermoformable composite sheet structure that can be made into the above laminate having the layers a.-d. of the above structure also is part of this invention.Type: GrantFiled: January 25, 1988Date of Patent: February 20, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventor: Frank Rohrbacher
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Patent number: 4902757Abstract: A solvent-based thermosetting coating composition comprising a hydroxy functional urethane modified polyester resin and blocked polyisocyanate crosslinking agent. The coating composition may be formulated as a hot sprayable, high solids coating composition suitable for use as chip resistant automotive vehicle primer suitable for use on body panel areas subject to chipping by stones, gravel and other road debris. Alternatively, the composition may be formulated as a high solids composition sprayable with conventional spraying equipment. The hydroxy functional urethane modified polyester resin is the product of polymerization of lactone monomers in the presence of hydroxy-containing urethane modified polyester precursor. The polymerization reaction mixture comprises between about 10 and about 80 weight percent the hydroxy-containing urethane modified polyester precursor and between about 90 and about 20 weight percent lactone monomers.Type: GrantFiled: October 5, 1988Date of Patent: February 20, 1990Assignee: E. I. Du Pont de Nemours & Co.Inventors: Panagiotis I. Kordomenos, Andrew H. Dervan, Tab Semanision
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Patent number: 4902754Abstract: A solvent-based thermosetting coating composition comprising a hydroxy functional urethane modified polyester resin and blocked polyisocyanate crosslinking agent. The coating composition may be formulated as a hot sprayable, high solids coating composition suitable for use as chip resistant automotive vehicle primer suitable for use on body panel areas subject to chipping by stones, gravel and other road debris. Alternatively, the composition may be formulated as a high solids composition sprayable with conventional spraying equipment. The hydroxy functional urethane modified polyester resin is the product of polymerization of lactone monomers in the presence of hydroxy-containing urethane modified polyester precursor. The polymerization reaction mixture comprises between about 10 and about 80 weight percent the hydroxy-containing urethane modified polyester precursor and between about 90 and about 20 weight percent lactone monomers.Type: GrantFiled: October 5, 1988Date of Patent: February 20, 1990Assignee: E. I. Du Pont de Nemours & Co.Inventors: Panagiotis I. Kordomenos, Andrew H. Dervan, Tab Semanision
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Patent number: 4895768Abstract: An automotive and refinish coating containing a curing catalyst which minimizes yellowing of a finish after exposure to weathering wherein the composition has a binder of an acrylic polymer of polymerized monomers of alkyl methacrylate, alkyl acrylate or mixtures thereof and the polymer has pendent aminoester or hydroxy aminoester groups and a glycidyl acrylic crosslinking polymer of polymerized monomers of glycidyl methacrylate or glycidyl acrylate and an alkyl methacrylate or acrylate or mixtures thereof; wherein the catalyst is the alkyl ester of para hydroxy benzoic acid having 1-4 carbon atoms in the alkyl group.Type: GrantFiled: May 16, 1989Date of Patent: January 23, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventor: Chaucer C. Tang
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Patent number: 4888399Abstract: Hydroxy functional polyester graft copolymers are provided. The copolymer is crosslinkable by hydroxy-reactive crosslinking agent and, in particular, is suitable for use in thermosetting coating compositions adapted to form a flexible cured coating over a variety of substrates, such as metal and plastic. The copolymer has a number average molecular weight between about 1300 and about 15,000, has a hydroxyl number between about 30 and about 300, and is the reaction product of carbon-carbon double bond-reactive monoethylenically unsaturated monomer with hydroxy functional carbon-carbon double bond-bearing branched polyester macromer. The macromer is the reaction product of (i) hydroxy functional polyester reactant containing 0-10 urethane linkages per molecule with (ii) silane compound having the general chemical formula: ##STR1## wherein X is an organic group of (--Si--O--).sub.Type: GrantFiled: October 3, 1988Date of Patent: December 19, 1989Assignee: E. I. Du Pont de Nemours and CompanyInventor: Rose A. Ryntz
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Patent number: 4870141Abstract: Novel solvent-based thermosetting composition comprising (a) hydroxy functional epoxy ester resin of number average molecular weight (Mn) between about 1,000 and about 5,000, comprising the reaction product of diepoxide with aliphatic diol and, subsequently, with acid component comprising (i) hydroxy functional acid and, optionally, (ii) fatty acid; and (b) polyfunctional, hydroxy-reactive crosslinking agent, for example, aminoplast crosslinking agent or blocked polyisocyanate crosslinking agent comprising isocyanate groups blocked by reaction with an active hydrogen bearing blocking agent. Coating composition may be formulated as primer sprayable with conventional spraying equipment.Type: GrantFiled: November 4, 1987Date of Patent: September 26, 1989Assignee: E. I. Du Pont de Nemours and CompanyInventor: Panagiotis I. Kordomenos
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Patent number: 4849480Abstract: Crosslinked polymer microparticles that have a particle size of about 0.1-5 microns of polymerized monomers of styrene, alkyl methacrylate having 1-12 carbons in the alkyl group, alkyl acrylate having 1-12 carbon atoms in the alkyl group and mixtures thereof, about 0.1-5% by weight of a crosslinking monomer of an alkylene glycol dimethacrylate or diacrylate each having 1-8 carbon atoms in the alkyl group and about 0.1-5% by weight of allyl methacrylate or allyl acrylate; said polymer having a weight average molecular weight of about 500,000 to 5,000,000; polymeric chains are grafted onto the polymer microparticles; the microparticles are useful as additives for coating compositions to control rheology and in particular for metallic pigment flake and sag control.Type: GrantFiled: October 13, 1987Date of Patent: July 18, 1989Assignee: E. I. Du Pont de Nemours and CompanyInventors: Joseph A. Antonelli, Joseph E. McLaughlin, Clifford H. Strolle
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Patent number: 4833216Abstract: A solvent-based thermosetting coating composition comprising a hydroxy functional urethane modified polyester resin and blocked polyisocyanate crosslinking agent. The coating composition may be formulated as a hot sprayable, high solids coating composition suitable for use as chip resistant automotive vehicle primer suitable for use on body panel areas subject to chipping by stones, gravel and other road debris. Alternatively, the composition may be formulated as a high solids composition sprayable with conventional spraying equipment. The hydroxy functional urethane modified polyester resin is the produce of polymerization of lactone monomers in the presence of hydroxy-containing urethane modified polyester precursor. The polymerization reaction mixture comprises between about 10 and about 80 weight percent the hydroxy-containing urethane modified polyester precursor and between about 90 and about 20 weight percent lactone monomers.Type: GrantFiled: October 7, 1987Date of Patent: May 23, 1989Assignee: E. I. Du Pont de Nemours and CompanyInventors: Panagiotis I. Kordomenos, Andrew H. Dervan, Tab Semanision
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Patent number: 4824917Abstract: A solvent-based thermosetting coating composition comprising hydroxy functional urethane modified polyester resin and amine-aldehyde crosslinking agent. The coating composition may be formulated as a hot sprayable, high solids coating composition suitable for use as chip resistant automotive vehicle primer suitable for use on motor vehicle body panel areas subject to chipping by stones, gravel and other road debris. Alternatively, the composition may be formulated as a high solids composition sprayable with conventional spraying equipment. The hydroxy functional urethane modified polyester resin is the product of polymerization of lactone monomers in the presence of hydroxy-containing urethane modified polyester precursor. The polymerization reaction mixture comprises between about 10 and about 80 weight percent the hydroxy-containing urethane modified polyester precursor and between about 90 and about 20 weight percent lactone monomers.Type: GrantFiled: November 4, 1987Date of Patent: April 25, 1989Assignee: E. I. Du Pont de Nemours and CompanyInventors: Panagiotis I. Kordomenos, Andrew H. Dervan
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Patent number: 4816528Abstract: Solvent-based thermosetting coating composition comprising a hydroxy functional epoxy-polyester graft copolymer and polyfunctional, hydroxy-reactive crosslinking agent. The coating composition may be formulated as hot sprayable, high solids coating composition suitable for use as chip resistant automotive vehicle primer suitable for use on body panel areas subject to chipping by stones, gravel and other road debris. The composition also may be formulated as a high solids composition sprayable with conventional spraying equipment. The hydroxy functional epoxy-polyester graft copolymer is the product of polymerization of lactone monomers in presence of hydroxy functional epoxy ester resin precursor. The precursor resin is the product of modified diepoxide and hydroxy functional secondary amine, the modified diepoxide being the product of the polymerization of lactone monomers in the presence of diepoxide which has been chain extended with dicarboxylic acid.Type: GrantFiled: September 3, 1987Date of Patent: March 28, 1989Assignee: E. I. DuPont de Nemours and CompanyInventors: Andrew H. Dervan, Panagiotis I. Kordomenos
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Patent number: 4816500Abstract: A coating composition useful for a finish for automobiles and trucks in which the film forming binder contains two reactive binder components of about(a) 50-95% by weight, based on the weight of the binder, of an acrylic polymer having at least two reactive anhydride groups composed of polymerized monomers of an ethylenically unsaturated anhydride and polymerized monomers from the group consisting of alkyl methacrylate, alkyl acrylate and any mixtures thereof, wherein the alkyl groups have 1-8 carbon atoms and the polymer has a weight average molecular weight of about 2,000-50,000;(b) 5-50% by weight, based on the weight of the binder, of a glycidyl component having at least two reactive glycidyl groups; andthe composition contains about 0.1-5% by weight, based on the weight of the binder, of a catalyst; and wherein the composition upon curing forms a hard, glossy and tack free finish.Type: GrantFiled: May 20, 1987Date of Patent: March 28, 1989Assignee: E. I. Du Pont de Nemours and CompanyInventor: Patrick H. Corcoran
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Patent number: 4816730Abstract: An apparatus for handling and moving a plurality of objects such as containers each holding a sample to be analyzed by an analytical instrument contains the following:a. a robotic arm assembly capable of vertical, horizontal and rotational movement;b. gripper mechanism for holding objects attach to the arm of the assembly;c. stepper motors for driving the robotic arm assembly;d. a power source that drives the stepper motors electrically coupled to the motors;e. a sensing system with a feedback loop that monitors the movement of arm assembly, the objects being manipulated by the arm assembly and the force applied to the objects by the gripper mechanism;f. a computer electrically interfaced with the linear stepper motors, the power means and the sensing system with the feedback loop andg. a means for providing operating data input to the computer;operating data is provided to the computer for operation of the autosampler and the autosampler moves the object as directed.Type: GrantFiled: December 22, 1986Date of Patent: March 28, 1989Assignee: E. I. Du Pont de Nemours and CompanyInventors: Robert E. Wilhelm, Jr., John R. Reader, Jr., Kenneth W. Gormley, Sr., Kendall B. Hendrick, Richard J. Celeste
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Patent number: 4812535Abstract: A solvent-based thermosetting coating composition comprising a hydroxy functional epoxy-polyester graft copolymer and blocked polyisocyanate crosslinking agent. The coating composition may be formulated as hot sprayable, high solids coating composition suitable for use as chip resistant automotive vehicle primer suitable for use on body panel areas subject to chipping by stones, gravel and other road debris. Alternatively, the composition may be formulated as a high solids composition sprayable with conventional spraying equipment. The hydroxy functional epoxy-polyester graft copolymer is the product of polymerization of lactone monomers in the presence of hydroxy functional epoxy ester resin precursor. The precursor resin is the reaction product of diepoxide chain extended with diphenol and chain terminated with acid component comprising primary hydroxy functional acid. The polymerization of the lactone monomers is carried out at a temperature between about 50.degree. C. and about 300.degree. C.Type: GrantFiled: September 3, 1987Date of Patent: March 14, 1989Assignee: E. I. DuPont de Nemours and CompanyInventors: Andrew H. Dervan, Panagiotis I. Kordomenos
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Patent number: 4812506Abstract: A blocked acid catalyst of an aromatic sulfonic acid blocked with amino methyl propanol and coating compositions containing the blocked acid catalyst.Type: GrantFiled: May 15, 1987Date of Patent: March 14, 1989Assignee: E. I Du Pont De Nemours and CompanyInventors: Thomas C. Gilmer, David C. K. Chang
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Patent number: 4810759Abstract: Hydroxy functional polyester graft copolymers are provided. The copolymer is crosslinkable by hydroxy-reactive crosslinking agent and, in particular, is suitable for use in thermosetting coating compositions adapted to form a flexible cured coating over a variety of substrates, such as metal and plastic. The copolymer has a number average molecular weight between about 1300 and about 15,000, has a hydroxyl number between about 30 and about 300, and is the reaction product of carbon-carbon double bond-reactive monoethylenically unsaturated monomer with hydroxy functional carbon-carbon double bond-bearing branched polyester macromer. The macromer is the reaction product of (i) hydroxy functional polyester reactant containing 0-10 urethane linkages per molecule with (ii) silane compound having the general chemical formula: ##STR1## wherein X is an organic group or (--Si--O--).sub.Type: GrantFiled: December 16, 1986Date of Patent: March 7, 1989Assignee: E. I. Du Pont de Nemours and CompanyInventor: Rose A. Ryntz
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Patent number: 4804718Abstract: A solvent-based thermosetting coating composition comprising a hydroxy functional epoxy-polyester graft copolymer and polyfunctional, hydroxy-reactive crosslinking agent. The coating composition may be formulated as hot sprayable, high solids coating composition suitable for use as chip resistant automotive vehicle primer suitable for use on body panel areas subject to chipping by stones, gravel and other road debris. The composition also may be formulated as a high solids composition sprayable with conventional spraying equipment. The hydroxy functional epoxy-polyester graft copolymer is the product of polymerization of lactone monomers in presence of hydroxy functional epoxy ester resin precursor. The precursor resin is the product of modified diepoxide and hydroxy functional secondary amine, the modified diepoxide being the product of the polymerization of lactone monomers in the presence of diepoxide which has been chain extended with diphenol.Type: GrantFiled: September 3, 1987Date of Patent: February 14, 1989Assignee: E. I. Du Pont de Nemours and CompanyInventors: Andrew H. Dervan, Panagiotis I. Kordomenos
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Patent number: 4804732Abstract: A thermosetting coating composition adapted to form a flexible cured coating over a variety of substrates, such as metal and plastic containing a hydroxy functional urethane modified polysiloxane graft copolymer and an alkylated melamine crosslinking agent. The copolymer has a number average molecular weight between about 1,000 and about 4,000, has a hydroxyl number between about 30 and about 300, contains about 1-10 urethane linkages per molecule and is the reaction product of carbon-carbon double bond-reactive monoethylenically unsaturated monomer with hydroxy functional carbon-carbon double bond-bearing branched polysiloxane macromer. The macromer is the reaction product of glycidyl methacrylate and hydroxy functional polysiloxane reactant containing 1-10 urethane linkages per molecule.Type: GrantFiled: February 2, 1988Date of Patent: February 14, 1989Assignee: E. I. Du Pont de Nemours and CompanyInventors: Rose A. Ryntz, Kenneth R. Kurple
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Patent number: 4786691Abstract: A solvent-based thermosetting coating composition comprising a hydroxy functional epoxy ester resin, and polycaprolactone diol, and blocked polyisocyanate crosslinking agent. The coating composition may be formulated as hot sprayable, high solids coating composition suitable for use as chip resistant automotive vehicle primer adapted for use on body panel areas subject to chipping by stones, gravel and other road debris. Alternatively, the composition may be formulated as a high solids composition sprayable with conventional spraying equipment. The resin is formed by reaction of diepoxide chain extended substantially simultaneously with diphenol and dicarboxylic acid and chain terminated with acid component comprising primary hydroxy functional acid.Type: GrantFiled: August 7, 1987Date of Patent: November 22, 1988Assignee: E. I. Du Pont de Nemours and CompanyInventors: Andrew H. Dervan, Panagiotis I. Kordomenos
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Patent number: 4778861Abstract: A hydroxy functional epoxy-polyester graft copolymer and solvent-based thermosetting coating composition comprising said copolymer and blocked polyisocyanate crosslinking agent. The coating composition may be formulated as hot sprayable, high solids coating composition suitable for use as chip resistant automotive vehicle primer adapted for use on body panel areas subject to chipping by stones, gravel and other road debris. Alternatively, the composition may be formulated as a high solids composition sprayable with conventional spraying equipment. The hydroxy functional epoxy-polyester graft copolymer is the product of polymerization of certain lactone monomers in the presence of hydroxy functional epoxy ester resin precursor. The precursor resin is the reaction product of diepoxide with aliphatic diol and, subsequently, with acid component comprising primary hydroxy functional acid. The polymerization of the lactone monomers is carried out at a temperature between about 50.degree. C. and about 300.degree. C.Type: GrantFiled: August 7, 1987Date of Patent: October 18, 1988Assignee: E. I. Du Pont de Nemours and CompanyInventors: Andrew H. Dervan, Dennis J. Grebur, Panagiotis I. Kordomenos
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Patent number: 4769425Abstract: An hydroxy functional epoxy-polyester graft copolymer and solvent-based thermosetting coating composition comprising said copolymer and blocked polyisocyanate crosslinking agent. The coating composition may be formulated as hot sprayable, high solids coating composition suitable for use as chip resistant automotive vehicle primer adapted for use on body panel areas subject to chipping by stones, gravel and other road debris. Alternatively, the composition may be formulated as a high solids composition sprayable with conventional spraying equipment. The hydroxy functional epoxy-polyester graft copolymer is the product of polymerization of certain lactone monomers in the presence of hydroxy functional epoxy amine adduct precursor. The precursor resin is the reaction product of diepoxide with aliphatic diol and, subsequently, with hydroxy functional secondary amine. The polymerization of the lactone monomers is carried out at a temperature between about 50.degree. C. and about 300.degree. C.Type: GrantFiled: August 7, 1987Date of Patent: September 6, 1988Assignee: E. I. Du Pont de Nemours and CompanyInventors: Andrew H. Dervan, Dennis J. Grebur, Panagiotis I. Kordomenos