Polymer Derived From Ethylenic Reactants Only Derived From Reactant Containing An Atom Other Than C, H, N, O, Or Halogen Patents (Class 525/116)
  • Process for the production of highly water-absorbing but less water-soluble hydrogels
    Patent number: 4351922
    Abstract: A highly water-absorbing but less water-soluble hydrogel is produced by polymerizing at least one hydrophilic ethylenically unsaturated monomer, e.g., ethylenically unsaturated carboxylic acid, ethylenically unsaturated sulfonic acid, or derivatives thereof, in the presence of a specific difunctional compound, e.g., polyethyleneglycol diglycidyl ether, polyethyleneglycol diacrylate, etc.
    Type: Grant
    Filed: August 19, 1980
    Date of Patent: September 28, 1982
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Tooru Yoshida, Seigo Iwagami, Takashi Ueshima, Yoshikazu Hosoda
  • Powder coating resin composition
    Patent number: 4321335
    Abstract: A powder coating resin composition comprising (A) a phosphorus-containing vinyl polymer containing a curable functional group and having a softening point, determined by the ring and ball method, of 70.degree. to 150.degree. C. and a number average molecular weight of 1500 to 30000, and (B) a curing agent.
    Type: Grant
    Filed: June 11, 1980
    Date of Patent: March 23, 1982
    Assignee: Dainippon Ink & Chemicals, Inc.
    Inventors: Shunji Arimoto, Akio Shoji, Shoichiro Takezawa, Noboru Ishikawa, Hirofumi Takeda