Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
COLORLESS NONTOXIC STABLE AQUEOUS SOLUTION OF (1-5C)-ALKYL VINYL ETHER-MALEIC ACID COPOLYMER
Document Type and Number:
Japanese Patent JP3869501
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a colorless stable aq. soln. of a (1-5C)-alkyl vinyl ether- maleic acid copolymer which is suitable for the use in personal care or industrial applications and contains a single stabilizer which is effective in stabilizing the copolymer even when contained in a low concn.
SOLUTION: In stabilizing an aq. soln. of an acid copolymer of maleic acid with a (1-5C)-alkyl vinyl ether against the aging in viscosity and mol.wt. due to long-term storage under ambient conditions using a single stabilizer, the acid copolymer is formed directly from a slurry of the corresponding anhydride copolymer in an org. solvent by the hydrolysis in water, while adding, before or after the hydrolysis, ethylenediaminetetraacetic acid or its anhydride or a superoxide dismutase to the slurry or the resultant soln.


Inventors:
Qi-San Woo
James curry
James Peek Karen
John Esma Cue One
Application Number:
JP24294496A
Publication Date:
January 17, 2007
Filing Date:
September 13, 1996
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ISP INVESTMENTS INC.
International Classes:
C08F8/12; C08J3/03; C08F8/30; C08K5/17; C08L33/02; C08L35/00; C08L35/08; (IPC1-7): C08F8/12; C08J3/03; C08J3/075; C08L35/00
Domestic Patent References:
JP5509083A
JP58017157A
JP3017104A
Foreign References:
US3531427
Attorney, Agent or Firm:
Kosaku Sugimura
Norita Tomita
Junko Sugimura
Hiroshi Tokunaga
Kazuaki Takami
Umemoto Masao