Patents Assigned to National Starch & Chemical Corp.
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Patent number: 4907822Abstract: Rounded, hard covered books are bound using a specific class of low viscosity reactive urethane hot melt adhesive compositions which provide a coating which will remain sufficiently flexible and thermoplastic so as to be capable of accepting and maintaining the rounded configuration even after extended periods of storage.Type: GrantFiled: September 26, 1988Date of Patent: March 13, 1990Assignee: National Starch and Chemical Corp.Inventors: David G. Carter, Derek J. Green, Anthony J. Clark
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Patent number: 4812547Abstract: Permanently tacky pressure sensitive adhesives comprise terpolymers consisting essentially of 35-50% by weight of a vinyl ester of an alkanoic acid, 15-30% by weight ethylene and 35-50% by weight of di-2-ethylhexyl maleate or di-n-octyl maleate or a corresponding fumerate.Type: GrantFiled: December 11, 1985Date of Patent: March 14, 1989Assignee: National Starch & Chemical Corp.Inventor: Paul R. Mudge
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Patent number: 4728572Abstract: Hot melt adhesive compositions prepared from styrene-isoprene-styrene block copolymers, a low softening point highly aliphatic resin and a metallic salt of a fatty acid exhibit a superior balance of properties in that they adhere well to a variety of substrates yet can be readily and cleanly removed when desired.Type: GrantFiled: April 10, 1987Date of Patent: March 1, 1988Assignee: National Starch and Chemical Corp.Inventor: Irwin J. Davis
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Patent number: 4668730Abstract: Latex adhesives having a Tg of -60.degree. to 0.degree. C. characterized by superior rheological properties, are prepared without the use of additional thickeners from a colloid stabilized latex comprising: 65-90% by weight of the latex polymer solids of an acrylate or methacrylate ester monomer polymerized in 10-35% by weight of the latex solids of a polymeric colloid, the polymeric colloid having a Tg of -40.degree. to 0.degree. C., a number average molecular weight of 2,000 to 10,000 and comprising(a) 50 to 85% by weight of a monomer of the formula: ##STR1## where R' is hydrogen or methyl and R" is a C.sub.1 -C.sub.12 straight or branched chain alkyl group;(b) 10 to 50% by weight of an ethylenically unsaturated mono- or dicarboxylic acid;(c) 5 to 30% by weight of an acrylic or methacrylic ester of a polyalkylene oxide, and(d) 0 to 30% by weight of another ethylenically unsaturated copolymerizable monomer.Type: GrantFiled: August 5, 1985Date of Patent: May 26, 1987Assignee: National Starch and Chemical Corp.Inventors: Carmine P. Iovine, Yen-Jer Shih, Paul B. Foreman
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Patent number: 4510324Abstract: The invention provides disulfonimide compounds of the general formula ##STR1## wherein X is bromine, chlorine or iodine; R is hydrogen or methyl; and R' is alkyl, aryl or substituted aryl. The compounds are useful as activators for anaerobic adhesive compositions and also as intermediates in the preparation of monomers of the general formula ##STR2## wherein R and R' are as defined above. The monomers are polymerizable to form homo- and copolymers useful in the photographic industry as well as in formulating anaerobic adhesive compositions.Type: GrantFiled: April 28, 1983Date of Patent: April 9, 1985Assignee: National Starch and Chemical Corp.Inventors: Robert D. Rossi, Dilip K. Ray-Chaudhuri
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Patent number: 4479825Abstract: Nonpigmented gelled wood stains are prepared from aniline dyestuffs, a solvent other than benzyl alcohol and dibenzylidene sorbitol as gellant therefor.Type: GrantFiled: May 13, 1983Date of Patent: October 30, 1984Assignee: National Starch and Chemical Corp.Inventor: Julio A. Fernandez
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Patent number: 4460617Abstract: A dry, protein-free coffee whitener comprises a dried emulsion concentrate comprising an edible fat having an average particle size of about 1-3 microns in diameter. The fat is stabilized with a degraded and chemically modified starch derivative having a flow viscosity of at least 15 seconds and a lipophilic character in an amount sufficient to provide said concentrate with a starch derivative to fat ratio in the range of 0.05-0.3 to 1. A method of preparing the stable, dry, protein-free coffee whitener comprises forming a liquid emulsion concentrate comprising water and the stabilized edible fat and drying the liquid emulsion concentrate.Type: GrantFiled: June 4, 1982Date of Patent: July 17, 1984Assignee: National Starch and Chemical Corp.Inventors: Richard L. Barndt, Gary A. Zwiercan, Paolo C. Trubiano
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Patent number: 4432967Abstract: A contraceptive composition for vaginal administration which contains a salt of a sulfonated styrene polymer and a pharmaceutically acceptable carrier. Effective polymers have a degree of substitution of from about 0.7 to 1.3 and an average molecular weight of between 600 and 7,000,000.Type: GrantFiled: June 25, 1982Date of Patent: February 21, 1984Assignee: National Starch and Chemical Corp.Inventor: Chester D. Szymanski
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Polyurethane adhesive compositions modified with a dicarbamate ester useful in laminating substrates
Patent number: 4352858Abstract: A modified polyurethane adhesive composition characterized by its improved bond strength and curing properties contains an isocyanate-terminated prepolymer and from 2.5 to 100% by weight, based on the prepolymer, of a dicarbamate ester compatible with the prepolymer and containing two free isocyanate groups. The resultant adhesive is suitable for hot-melt applications in bonding flexible substrates.Type: GrantFiled: September 4, 1981Date of Patent: October 5, 1982Assignee: National Starch and Chemical Corp.Inventor: Henry Stanley -
Patent number: 4349577Abstract: Starch-protein clouds useful for clouding acidic fluids, especially fruit-flavored beverages, are prepared by forming an aqueous dispersion of from 3-15 parts of a starch base and 1 part of a water-soluble protein salt, such as the sodium and/or calcium salts of casein, a soy protein, or a wheat protein and then acidifying to a pH of about 2.5-5.5 to develop the cloud. The cloud may be isolated by spray drying or freeze drying to give a dry cloud suitable for incorporation in dry beverage mixes. Preclouds may be prepared in the same manner except that they are not acidified prior to use, but during use. Dry preclouds may be isolated by drum drying or freeze drying.Type: GrantFiled: October 6, 1980Date of Patent: September 14, 1982Assignee: National Starch and Chemical Corp.Inventor: Martin M. Tessler
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Patent number: 4342843Abstract: The metal adhesion and heat and water resistance of conventional neoprene latex adhesives are improved by the addition thereto of a polyamine and an epoxy resin wherein for every 100 parts by weight of dry neoprene, the epoxy is added in an amount of 10-40 parts and the amine is added in an amount sufficient to provide 50-150% of the stoichiometric amount required to cure the epoxy.Type: GrantFiled: February 24, 1981Date of Patent: August 3, 1982Assignee: National Starch and Chemical Corp.Inventors: Witold Perlinski, Irwin J. Davis, John F. Romanick
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Patent number: 4239592Abstract: A starch blend of hydrophobic and non-hydrophobic starches, an improved process of surface sizing paper therewith, and the sized paper product are disclosed. The hydrophobic starch component comprises starch monoesters of selected dicarboxylic acids.Type: GrantFiled: November 15, 1976Date of Patent: December 16, 1980Assignee: National Starch and Chemical Corp.Inventors: Lawrence A. Gaspar, Martin Tessler, Alexander R. Malcolm
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Patent number: 4219646Abstract: The invention discloses a dual derivatizing process for the preparation of cold water swelling starches and foodstuffs thickened therewith. The starch base is first subjected to a primary crosslinking reaction using sodium trimetaphosphate (STMP) according to conventional techniques, then reslurried, treated with additional STMP and drum dried to effect a secondary crosslinking reaction in situ.Type: GrantFiled: March 19, 1979Date of Patent: August 26, 1980Assignee: National Starch and Chemical Corp.Inventor: Roger W. Rubens
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Patent number: 4112222Abstract: An improved method for producing granular, cold-water dispersible hydroxypropylated starch derivatives comprises reacting a granular starch base with propylene oxide in the presence of sodium acetate or another water-soluble salt of a selected carboxylic acid. The resulting starch product, which upon purification is free of toxic by-products and has no perceptible off-taste, finds use as a thickener in food as well as in non-food applications.Type: GrantFiled: January 7, 1977Date of Patent: September 5, 1978Assignee: National Starch and Chemical Corp.Inventor: Wadym Jarowenko
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Patent number: 4090013Abstract: A dry, solid, water-swellable, water-insoluble absorbent composition of matter comprises an ionic complex of a water-soluble anionic poly-electrolyte and a polyvalent metal cation. The composition is characterized by an ability to uncomplex at an elevated pH and recomplex at a lower pH.Type: GrantFiled: March 7, 1975Date of Patent: May 16, 1978Assignee: National Starch and Chemical Corp.Inventors: Stuart H. Ganslaw, Howard G. Katz
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Patent number: RE29960Abstract: A size mixture comprising a substituted cyclic dicarboxylic acid anhydride and polyoxyalkylene alkyl or alkylaryl ether or the corresponding mono- or di-ester is used to size paper products. In accordance with a preferred embodiment the liquid size mixture is added directly to the paper stock system without prior emulsification.Type: GrantFiled: February 27, 1978Date of Patent: April 10, 1979Assignee: National Starch and Chemical Corp.Inventors: Emil D. Mazzarella, Leonard J. Wood, Jr., Walter Maliczyszyn