Patents Assigned to Dynapol Corporation
  • Patent number: 4028342
    Abstract: 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: Grant
    Filed: May 29, 1975
    Date of Patent: June 7, 1977
    Assignee: Dynapol Corporation
    Inventors: James A. Dale, William J. Leonard
  • Patent number: 4025535
    Abstract: 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: Grant
    Filed: February 13, 1976
    Date of Patent: May 24, 1977
    Assignee: Dynapol Corporation
    Inventors: Guy A. Crosby, Grant E. DuBois, Ned M. Weinshenker
  • Patent number: 4018826
    Abstract: 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: Grant
    Filed: November 4, 1974
    Date of Patent: April 19, 1977
    Assignee: Dynapol Corporation
    Inventors: Richard D. Gless, Jr., Daniel J. Dawson, Robert E. Wingard
  • Patent number: 4013801
    Abstract: 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: Grant
    Filed: February 13, 1976
    Date of Patent: March 22, 1977
    Assignee: Dynapol Corporation
    Inventors: Daniel J. Dawson, Kenneth M. Otteson, C. Thomas Seitz
  • Patent number: 4000201
    Abstract: 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: Grant
    Filed: October 4, 1974
    Date of Patent: December 28, 1976
    Assignee: Dynapol Corporation
    Inventor: Ned M. Weinshenker
  • Patent number: 3998974
    Abstract: 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: Grant
    Filed: June 6, 1975
    Date of Patent: December 21, 1976
    Assignee: Dynapol Corporation
    Inventor: Alejandro Zaffaroni
  • Patent number: 3996160
    Abstract: 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: Grant
    Filed: February 24, 1975
    Date of Patent: December 7, 1976
    Assignee: Dynapol Corporation
    Inventors: James A. Dale, Patricia C. Wang
  • Patent number: 3996199
    Abstract: 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: Grant
    Filed: February 17, 1976
    Date of Patent: December 7, 1976
    Assignee: Dynapol Corporation
    Inventors: Ned M. Weinshenker, Leonard A. Bunes, Roman Davis
  • Patent number: 3994828
    Abstract: 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: Grant
    Filed: June 7, 1973
    Date of Patent: November 30, 1976
    Assignee: Dynapol Corporation
    Inventor: Alejandro Zaffaroni
  • Patent number: 3995094
    Abstract: 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: Grant
    Filed: September 12, 1975
    Date of Patent: November 30, 1976
    Assignee: Dynapol Corporation
    Inventors: Guy A. Crosby, Masao Kato