The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 1994
Filed:
Oct. 14, 1992
Applicant:
Inventors:
Ariko Nishikawa, Aichi, JP;
Tamotsu Kunihiro, Aichi, JP;
Tsukuru Izukawa, Aichi, JP;
Kiyotsugu Asai, Aichi, JP;
Assignee:
Mitsui Toatsu Chemicals, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ; C08L / ; C08L / ; C08L / ;
U.S. Cl.
CPC ...
524762 ; 524761 ; 524765 ;
Abstract
High concentration-low viscosity polymer-polyols are prepared by polymerizing mixtures of acrylonitrile and styrene in polyols, which are free of any polymerizable carbon-carbon double bond, in the presence of alkyl-substituted tertiary mines. Without use, as a dispersion stabilizer, of organic compounds which have a polymerizable carbon-carbon double bond and terminal hydroxyl groups, there can be obtained polymer-polyols which have a concentration of the polymer of 33-60 wt % and a glass transition temperature of the polymer of 90.degree.-120.degree. C.