Patents Assigned to Dynapol Corporation
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Patent number: 4028342Abstract: Polymeric phenols of the formula ##STR1## WHEREIN N IS AN INTEGER FROM 3 TO 2,000, R.sub.1 is a lower alkyl and R.sub.2 is hydrogen or a lower alkyl, are disclosed. Their preparation and preferred use as antioxidants, especially nonabsorbable food antioxidants, are also disclosed.Type: GrantFiled: May 29, 1975Date of Patent: June 7, 1977Assignee: Dynapol CorporationInventors: James A. Dale, William J. Leonard
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Patent number: 4025535Abstract: Flavanones represented by the formula ##STR1## wherein R is a lower alkyl of from one to three carbon atoms inclusive, n is an integer of from one to three inclusive and M is hydrogen or a physiologically acceptable metal cation, are disclosed. These materials are themselves useful as dietetic sweeteners as well as being direct intermediates for the preparation of useful dihydrochalcone sweeteners.Type: GrantFiled: February 13, 1976Date of Patent: May 24, 1977Assignee: Dynapol CorporationInventors: Guy A. Crosby, Grant E. DuBois, Ned M. Weinshenker
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Patent number: 4018826Abstract: Poly(vinylamine) salts of mineral acids are produced by reacting acetaldehyde and acetamide at a mole ratio of 1:2-4 with acid catalyst, cracking the ethylidene-bis-acetamide which results into vinylacetamide, polymerizing the vinylacetamide with a free radical polymerization catalyst, and hydrolyzing the poly(vinylacetamide) to the desired amine salts by contacting the polyvinylacetamide with an aqueous solution of the corresponding mineral acid. This product may be converted to the free amine, which in turn may function as a precursor in the manufacture of certain polymeric dyes and colorants.Type: GrantFiled: November 4, 1974Date of Patent: April 19, 1977Assignee: Dynapol CorporationInventors: Richard D. Gless, Jr., Daniel J. Dawson, Robert E. Wingard
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Patent number: 4013801Abstract: Edible materials including foods, beverages and oral pharmaceuticals are sweetened by the addition of a sweetening amount in the range of from about 0.002% to 1% by weight (basis edible material) of flavanone represented by the structural formula ##STR1## wherein R is a lower alkyl of from one to three carbon atoms inclusive, n is an integer of from one to three inclusive and M is hydrogen or a physiologically acceptable metal cation.Type: GrantFiled: February 13, 1976Date of Patent: March 22, 1977Assignee: Dynapol CorporationInventors: Daniel J. Dawson, Kenneth M. Otteson, C. Thomas Seitz
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Patent number: 4000201Abstract: Organic liquids subject to oxidative decomposition, such as ethers, are stabilized against such decomposition by the addition of particulate, insoluble solid polymer resin to which is covalently bonded a plurality of oxidation active groups.Type: GrantFiled: October 4, 1974Date of Patent: December 28, 1976Assignee: Dynapol CorporationInventor: Ned M. Weinshenker
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Patent number: 3998974Abstract: Nonnutritive flavor imparting compounds of the general formula (F--Z).sub.n C wherein F is an active flavor imparting agent, C is a controlling agent for transporting and essentially restricting absorption of the compound (F--Z).sub.n C in a biological environment, Z is a covalent bond for bonding F to C and n is at least one. The nonnutritive flavor imparting compounds are useful for imparting flavor and taste to foods, beverages, confections and medicinals without any substantial absorption of the flavor imparting compounds in the environment of use.Type: GrantFiled: June 6, 1975Date of Patent: December 21, 1976Assignee: Dynapol CorporationInventor: Alejandro Zaffaroni
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Patent number: 3996160Abstract: Hydroquinonoid polymers having n recurring units of the General Structural Formula ##STR1## wherein n is 3 or greater, X and X' independently are hydrogen or methyl, R is a lower hydrocarbon, and R' and R" independently are lower hydrocarbons or hydrogens are disclosed as well as such polymers additionally containing phenolic copolymerizates. The preparation of these polymers by the one step copolymerization of a diolefinic hydrocarbon, a hydroquinonoid and optionally a phenolic, in the presence of an ortho-alkylation catalyst, and the use of these polymers as antioxidants, especially for foodstuffs, is also disclosed.Type: GrantFiled: February 24, 1975Date of Patent: December 7, 1976Assignee: Dynapol CorporationInventors: James A. Dale, Patricia C. Wang
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Patent number: 3996199Abstract: Phenolic polymers formed by the reaction of divinylbenzene with a mixture of hydroxyanisole, tertiary butylhydroquinone, tertiary butyl phenol and bisphenol A (and optionally para-cresol) under condensation conditions in the presence of a phenol ortho alkylation catalyst are disclosed. These materials find use as oil-soluble antioxidants especially for edibles.Type: GrantFiled: February 17, 1976Date of Patent: December 7, 1976Assignee: Dynapol CorporationInventors: Ned M. Weinshenker, Leonard A. Bunes, Roman Davis
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Patent number: 3994828Abstract: Novel, nonabsorbable antioxidants of the general formula (An).sub.n R wherein An is a means for preventing oxidation of an oxidizable material, R is a means for essentially restricting the absorption of An in a biological environment, .about. is a means for covalently bonding An to R for a prolonged time, and n is at least one. The nonabsorbable antioxidants are useful as stabilizers in oxidizable materials without any substantial absorption of the antioxidant in the biological environment.Type: GrantFiled: June 7, 1973Date of Patent: November 30, 1976Assignee: Dynapol CorporationInventor: Alejandro Zaffaroni
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Patent number: 3995094Abstract: Polystyrene is halomethylated by contact with a solution of halomethoxybutane in a reaction medium (preferably halohydrocarbon) in the presence of a transition metal halide catalyst at a temperature of from about 5.degree. C to about 100.degree. C.Type: GrantFiled: September 12, 1975Date of Patent: November 30, 1976Assignee: Dynapol CorporationInventors: Guy A. Crosby, Masao Kato