Patents Represented by Attorney John M. Lynn
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Patent number: 7952484Abstract: A method and apparatus are disclosed which involve an improved way to coerce use of a soap dispenser (or other hygiene device). A soap dispenser according to at least one embodiment, includes a teaching or entertaining device that is fun and informative that is triggered when the soap dispenser is utilized. The soap dispenser may also be utilized as an advertising tool.Type: GrantFiled: July 14, 2010Date of Patent: May 31, 2011Assignee: Hygiene Screen LLCInventor: John M. Lynn
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Patent number: 5091498Abstract: The present invention describes the use of 1,3-dialkylimidazole-2-thiones as a catalyst for epoxy/anhydride reactions (and other reactions) and a method of making these catalysts. Epoxy/anhydride coatings containing these improved catalysts offer the following advantages: improved appearance (especially since even weeks after application the coatings still have a "wet" look); better pot-life; improved resistance to alkaline substances which will improve durability; improved solubility; and coatings which have a reduced volatile organic content (VOC).Type: GrantFiled: February 19, 1991Date of Patent: February 25, 1992Assignee: E. I. Du Pont de Nemours and CompanyInventors: Anthony J. Arduengo, III, Robert J. Barsotti, Patrick H. Corcoran
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Patent number: 5084542Abstract: The present invention describes the use of 1,3-disubstituted imidazole-2-thiones as catalysts for crosslinking epoxy functionalized materials with isocyanate functionalized materials. Epoxy/Isocyanate coatings containing these improved catalysts offer the following advantages: excellent pot-life with rapid cure in air at ambient temperatures, control of hardness and toughness of the cured resins, coatings which have a reduced volatile organic content, a curing process which provides clear colorless coatings, and excellent resistance to acids and bases which will improve durability.Type: GrantFiled: May 31, 1990Date of Patent: January 28, 1992Assignee: E. I. du Pont de Nemours and CompanyInventors: Anathony J. Arduengo, III, Patrick H. Corcoran
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Patent number: 5068153Abstract: A coating composition useful for a finish for automobiles and trucks in which the film forming binder contains reactive binder components of about(a) 25-90% 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; and(c) 0.1-7% by weight, based on the weight of the binder, of a phosphonium catalyst or a blend of a phosphonium catalyst and a tertiary amine catalyst which may or may not contain hydroxyl groups.Type: GrantFiled: October 11, 1989Date of Patent: November 26, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: Robert Barsotti, Lester S. Cohen
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Patent number: 5024387Abstract: A method for optimizing the processing of continuous media mills is disclosed. It has been found that using a differential pressure device to measure the pressure drop across the mill allows the on line determination of the state of media fluidization in the mill. Operation within an optimum mill base flow rate range is needed to have good fluidization of the media so that grinding can be efficient. Using differential pressure measurement allows a precise determination of the mill base flow rate range which provides full fluidization of the media and mill base flow rate control within that range.Type: GrantFiled: April 26, 1990Date of Patent: June 18, 1991Assignee: E. I. du Pont de Nemours and CompanyInventor: An-Gong Yeh
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Patent number: 5022592Abstract: Media mill having a magnetic circuit of magnetic impellers on a shaft, magnetized media, and a magnetizable outer shell which provides improved efficiency.Type: GrantFiled: July 9, 1990Date of Patent: June 11, 1991Assignee: E. I. du Pont de Nemours and CompanyInventors: Howard Zakheim, Peter M. Clinton, James D. Goldschneider, Christopher A. Kasmer, Markus Zahn, Charles L. Hoffmeyer
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Patent number: 4994507Abstract: Disclosed herein are cathodic electrodepositable coating baths containing lead cyanamide as a supplementary catalyst. It has been found that using lead cyanamide in conjunction with a primary metal catalyst (e.g. dibutyltin oxide) results in an electrocoat system with superior underbake cure without sacrificing chipping characteristics during overbake cure.Type: GrantFiled: February 20, 1990Date of Patent: February 19, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: Tapan K. Debroy, Ding Y. Chung, Craig R. Deschner, Sioe-Heng A. Tjoe
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Patent number: 4981713Abstract: This invention relates to the use of plasma technology for coating thin polymer films on steel. The process utilizes DC power, system pressures of 0.01-1.0 torr, the steel substrate is made the cathode, and the anodes are equipped with magnetic enhancement. The result is a uniform, pin-hole free, dense organic coating. Furthermore, there is minimal deposition of the organic film on the anodes or interior of the chamber.Type: GrantFiled: February 14, 1990Date of Patent: January 1, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: Hirotsugu Yasuda, Duck J. Yang
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Patent number: 4980398Abstract: Disclosed herein is a cathodic electrodepositable resin containing polyamine enamine. It has been discovered that reacting epoxy resins with polyamine enamine is a viable method of introducing amine functionality to the epoxy resin. The polyamine enamine route results in the desired high pH and stable dispersion in the electrocoat bath.Type: GrantFiled: February 23, 1990Date of Patent: December 25, 1990Assignee: E. I. du Pont de Nemours and CompanyInventors: Ding Y. Chung, Tapan K. Debroy
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Patent number: 4980429Abstract: A low cure cathodic electrodepositable resin is disclosed. The backbone of the resin is a polyepoxide amine adduct which is crosslinked with aminoplast resins and catalyzed by metal catalysts. The resin is capable of curing in a basic environment at a temperature below 150.degree. C. The resin can be salted with an acid and can be dissolved or dispersed in water. The aqueous dispersions can then be formulated into electrocoat primer coatings for metal objects.Type: GrantFiled: January 26, 1990Date of Patent: December 25, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventor: Edward Chu
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Patent number: 4980196Abstract: This invention relates to the use of low temperature plasma technology for significantly improved corrosion protection of steel. The plasma process involves pretreating of the steel surfaces by oxygen plasma and thin film deposition by polymerization of certain precursors on the steel. The process utilizes DC power, substrates as the cathode, magentron anodes, and system pressures of 0.01-0.5 torr. After the thin film plasma deposition it is also preferably to put a primer coating over the thin film.Type: GrantFiled: February 14, 1990Date of Patent: December 25, 1990Assignee: E. I. du Pont de Nemours and CompanyInventors: Hirotsugu Yasuda, Tyau-Jeen Lin, Duck J. Yang, Joseph A. Antonelli
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Patent number: 4976833Abstract: An electrodepositable cathodic resin is disclosed. The resin is the reaction product of a polyepoxide amine adduct and a crosslinking agent which is polyol modified tetramethylxylylene diisocyanate blocked with alcohol or caprolactam. The resulting resin results in a nonyellowing film which is very smooth.Type: GrantFiled: October 4, 1989Date of Patent: December 11, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventors: Tapan K. Debroy, Ding Y. Chung
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Patent number: 4975474Abstract: A coating composition useful for a finish for automobiles and trucks in which the film forming binder contains reactive binder components of about(a) 25-94% 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;(c) 1-40% by weight, based on the weight of the binder, of a self-stabilized dispersed resin; andthe composition contains about 0.1-5% by weight; based on the weight of the binder, of a catalyst.Type: GrantFiled: October 11, 1989Date of Patent: December 4, 1990Assignee: E. I. du Pont de Nemours and CompanyInventors: Robert J. Barsotti, Patrick H. Corcoran
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Patent number: 4963600Abstract: A method for minimizing the inherent yellowness of any kind of clear coating is disclosed. This method involves the addition of very small amounts of blue pigments or dyes to the clear coating so that chroma neutralization occurs. The chroma neutralization results in a clear coat which is crystal clear in appearance.Type: GrantFiled: December 19, 1988Date of Patent: October 16, 1990Assignee: E. I. du Pont de Nemours and CompanyInventor: Joseph F. Coughlin
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Patent number: 4952626Abstract: Coating composition containing 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 1,300 and about 15,000, has a hydroxy 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 macromonomer. The macromonomer is the reaction product of (i) isocyanato monomer having the formula: ##STR1## with (ii) hydroxy functional polyester reactant containing 0-1- urethane linkages per molecule.Type: GrantFiled: December 9, 1988Date of Patent: August 28, 1990Assignee: E. I. du pont de Nemours and CompanyInventors: Panagiotis I. Kordomenos, Rose A. Ryntz
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Patent number: 4946507Abstract: A pigment dispersant useful in cathodic electrocoat compositions is disclosed. This pigment dispersant is the reaction product of alkylene carbonate and a primary amine containing an imidazoline moiety. This pigment dispersant allows the maximazation of pigment to binder ratios and the minimization of volatile organic content (VOC) in electrocoat baths.Type: GrantFiled: July 12, 1989Date of Patent: August 7, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventors: Stephen C. Peng, Taddesse Gebregiorgis
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Patent number: 4945145Abstract: A curable silane resin, and a process for making same, having at least one of two units selected from the group consisting of a prepolymer (C) and a prepolymer (F); the prepolymer (C) having the formula (I): ##STR1## and the prepolymer (F) having the formula (III): ##STR2##The curable resin of our invention has excellent flexibility, solvent resistance and adhesion to organic materials. Furthermore our process for preparing the resin is simpler, more easily reproducible, and results in less unwanted by-prodducts than earlier processes for preparing similar silane resins.Type: GrantFiled: April 6, 1989Date of Patent: July 31, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventors: Paul P. Bruylants, Patrick H. Corcoran, John A. Simms
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Patent number: 4908397Abstract: A coating composition useful for a finish for automobiles and trucks in which the film forming binder contains reactive binder components of about(a) 25-94% 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;(c) 1-40% by weight, based on the weight of the binder, of a self-stabilized dispersed resin; andthe composition contains about 0.1-5% by weight; based on the weight of the binder, of a catalyst.Type: GrantFiled: June 27, 1988Date of Patent: March 13, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventors: Robert J. Barsotti, Patrick H. Corcoran
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Patent number: 4906677Abstract: A coating composition useful for a finish for automobiles and trucks in which the film forming binder contains reactive binder components of about(a) 25-90% 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; and(c) 0.1-7% by weight, based on the weight of the binder, of a phosphonium catalyst or a blend of a phosphonium catalyst and a tertiary amine catalyst which may or may not contain hydroxyl groups.Type: GrantFiled: June 27, 1988Date of Patent: March 6, 1990Assignee: E. I. Du Pont de Nemours & CompanyInventors: Robert Barsotti, Lester S. Cohen
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Patent number: 4900415Abstract: A low temperature cure electrodepositable cathodic resin is disclosed. The resin is the reaction product of a polyepoxide amine adduct and a novel blocked crosslinking agent. The crosslinking agent of our invention is tetramethylxylene diisocyanate blocked with any suitable blocking agent. The resulting resin can be cured at relatively low temperatures (250.degree.-275.degree. F.), which potentially allows the use of the resin with articles containing plastics.Type: GrantFiled: November 23, 1988Date of Patent: February 13, 1990Assignee: E. I. Du Pont de Nemours & CompanyInventors: Ding Yu Chung, Tapan K. DebRoy