Title:
N-VINYLCARBOXAMIDE-BASED CROSSLINKING COPOLYMER RESIN AND ITS PREPARATION
Document Type and Number:
Japanese Patent JP3805531
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve the storage stability of an emulsion by conducting crosslinking polymerization of a specific N-vinylcarboxamide with an oil-soluble vinyl compound containing a polymeric unsaturated group in organic solvents in the presence of an initiator for polymerization and a crosslinking agent, to thereby increase viscosity of the resulting water-in-oil type emulsion and gelate it.
SOLUTION: This N-vinylcarboxamide-based crosslinking copolymer resin which has retention amount of 500-3000 in oil, mol.wt. of 10,000-400,000 and an average particle size of 0.1-100 μm is obtained by dissolving (A) 1-30 mol.% N-vinylcarboxamide represented by the formula CH2=CHNR1COR2 (wherein R1 and R2 are and each H or methyl) and (B) 70-99 mol.% of an oil-soluble vinyl compound which has a polymeric unsaturated group in the molecule and whose solubility in 100 g water is not more than 1 g at 20°C, into organic solvents which dissolve components (A) and (B) but not the generated copolymer, and by crosslinking polymerization of the obtained solution at 0-100°C for 1-24 hr in the presence of 0.00001-1 wt.% crosslinking agent per the total amount of the components (A) and (B) in hydrophilic solvents.
Inventors:
It's Sakuma
Takashi Motomura
Takashi Motomura
Application Number:
JP18656498A
Publication Date:
August 02, 2006
Filing Date:
July 01, 1998
Export Citation:
Assignee:
Sekisui Plastics Co., Ltd.
International Classes:
C09K3/00; C08F2/06; C08F220/18; C08F246/00; C09D7/12; C08F226/02; (IPC1-7): C08F246/00; C08F2/06; C08F220/18; //C09D7/12; C09K3/00; (C08F246/00; C08F226:02); (C08F220/18; C08F226:02)
Domestic Patent References:
| JP7070244A | ||||
| JP4323213A | ||||
| JP10279637A | ||||
| JP62270912A | ||||
| JP4230250A |
Attorney, Agent or Firm:
Inaoka cultivation
Mio Kawasaki
Mio Kawasaki