Patents by Inventor John A. Sedlak

John A. Sedlak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Additives for improving tire cord adhesion and toughness of vulcanized rubber compositions
    Patent number: 5298539
    Abstract: New additives in rubber compositions improve tire cord adhesion without need to use resorcinol. The new additives are derivatives of melamine, aceto guanamine, benzoguanamine, cyclohexylguanamine, and glycoluril, substituted with at least two vinyl-terminated radicals. Preferred compounds may also be substituted with at least one radical having a carbamylmethyl group.
    Type: Grant
    Filed: September 5, 1990
    Date of Patent: March 29, 1994
    Assignee: Cytec Industries, Inc.
    Inventors: Balwant Singh, John A. Sedlak
  • Process for preparing esters of 3,5,6-trichlorosalicyclic acid
    Patent number: 5194666
    Abstract: An improved process for the synthesis of esters of 3,5,6-trichlorosalicylic acid in quantitative yield comprises reacting the acid with an alcohol under distillation conditions in the presence of a titanium ester or chelate catalyst, whereby byproduct ether formation from the alcohol is suppressed. The process is especially applicable to a process by which salicylic acid is chlorinated first in concentrated sulfuric acid and then with iodine catalyst to make the trichlorosalicylic acid which is extracted and then reacted with an alcohol and a titanium catalyst to make the ester.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: March 16, 1993
    Assignee: American Cyanamid Company
    Inventors: John A. Sedlak, Mark A. Higgins, Amy P. Essenfeld
  • Emulsion copolymers of meta- or para-isopropenyl-alpha, alpha-di-methylbenzylisocyanates
    Patent number: 4754011
    Abstract: A method of making a copolymer of meta- or para-isopropenyl- .alpha.,.alpha.-dimethylbenzylisocyanate and at least one other ethylenically unsaturated comonomer polymerizable therewith, comprising polymerizing the meta- or para-isopropenyl- .alpha.,.alpha.-dimethylbenzylisocyanate and at least one other ethylenically unsaturated comonomer in an aqueous emulsion in the presence of a free-radical polymerization initiator and a chain transfer agent to control molecular weight.Also disclosed are methods of breaking the aqueous emulsion after polymerization is completed by either adding a salt, e.g., aluminum sulfate, or by freezing the emulsion followed by thawing to yield the copolymer as a mechanically separable solid phase of a two-phase liquid-solid mixture.
    Type: Grant
    Filed: December 21, 1983
    Date of Patent: June 28, 1988
    Assignee: American Cyanamid Company
    Inventors: Robin W. Dexter, Peter S. Forgione, John A. Sedlak
  • Method for sizing paper using hydrolyzed homopolymers or copolymers of meta- or para- isopropenyl-.alpha.,.alpha.-dimethylbenzylisocyanate
    Patent number: 4547265
    Abstract: A method of sizing paper, comprising applying thereto a sizingly effective amount of a polymer selected from the group consisting of:(a) homopolymers of .alpha.,.alpha.-dimethyl-m-isopropenyl benzyl amine or .alpha.,.alpha.-dimethyl-p-isopropenyl benzyl amine;(b) copolymers of (i) .alpha.,.alpha.-dimethyl-m-isopropenyl benzyl amine or .alpha.,.alpha.-dimethyl-p-isopropenyl benzylamine, and (ii) at least one other ethylenically unsaturated monomer copolymerizable therewith; and(c) acid salts of said homopolymers (a) and copolymers (b).Such homopolymers or copolymers suitably may be prepared as the hydrolysis reaction products of the corresponding homopolymeric or copolymeric isocyanates.
    Type: Grant
    Filed: June 1, 1983
    Date of Patent: October 15, 1985
    Assignee: American Cyanamid Company
    Inventors: Peter S. Forgione, Balwant Singh, John A. Sedlak
  • Electrochromic devices with polymeric electrolytes
    Patent number: 4174152
    Abstract: Improved electrochromic devices result from the incorporation of novel polymeric electrolytes. The electrolytes are based upon copolymers prepared from vinyl monomers and acid-group-containing monomers.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: November 13, 1979
    Assignee: American Cyanamid Company
    Inventors: Robert D. Giglia, John A. Sedlak, David W. Lipp
  • Use of a dissolved cellulose as a dry strength agent and drainage aid for paper
    Patent number: 4161423
    Abstract: Cellulose dissolved in a suitable solvent and added to an aqueous suspension of paper-making cellulose fibers provides paper of improved dry strength.
    Type: Grant
    Filed: October 14, 1977
    Date of Patent: July 17, 1979
    Assignee: American Cyanamid Company
    Inventors: Richard B. Wasser, John A. Sedlak