Patents Examined by J. Schofer
  • Styrl-modified acrylate polymer pressure sensitive adhesive beads
    Patent number: 5728786
    Abstract: Styryl-modified acrylate polymer pressure sensitive adhesive beads, adhesive films made therefrom and methods of making the same. Surprisingly, the polymerization of styryl-functional monomer into bead formulations provides beads that can be easily extruded and made into adhesive films having high shear strength. The polymerization of styryl-functional monomer into bead formulations comprising methacrylic acid also obviates the need to use a modifier moiety.
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: March 17, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Chung I. Young, Albert I. Everaerts, Stephen E. Krampe
  • Polymer scale preventive process using a coating of chitosan salt and phenothiazine
    Patent number: 5486582
    Abstract: A polymer scale preventive process for use in polymerization of a monomer having an ethylenically unsaturated double bond, comprising (A) a water-soluble basic polysaccharide and (B) a phenothiazine. The process is used for forming a coating on the inner wall, etc. of a polymerization vessel, and highly safe for operators. Deposition of polymer scale can be effectively prevented, and polymeric product with high whiteness or a low initial coloration is obtained.
    Type: Grant
    Filed: December 15, 1994
    Date of Patent: January 23, 1996
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Toshihide Shimizu, Minoru Shigemitsu
  • Process for hydrogenating conjugated diene polymers
    Patent number: 4510293
    Abstract: A process for catalytically hydrogenating a carbon-carbon double bond of a conjugated diene polymer by introducing hydrogen in the solution of said polymer, characterized in that a palladium salt of a carboxylic acid is used as a catalyst.
    Type: Grant
    Filed: December 13, 1983
    Date of Patent: April 9, 1985
    Assignee: Nippon Zenn Co. Ltd.
    Inventors: Yoichiro Kubo, Takaaki Kohtaki, Kiyomori Oura
  • Polymer bound aryl substituted crown ethers
    Patent number: 4447585
    Abstract: There is disclosed a new polymer bound catalyst, a means for the production of a polymer bound aryl substituted crown ether and use of such polymer bound aryl substituted crown ethers as catalysts.
    Type: Grant
    Filed: October 24, 1983
    Date of Patent: May 8, 1984
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Dane K. Parker
  • Process and dye preparations for pad-dyeing
    Patent number: 4300900
    Abstract: A dye preparation containing at least one dye insoluble or difficultly soluble in water, an anionic or nonionic dispersing agent, at least one metal complex consisting of a polyvalent cation and at least one complexing agent, and optionally further additives, water and/or organic solvent.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: November 17, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Roland Putzar, Hans Fierz