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:
Oct. 25, 1994
Filed:
May. 17, 1990
Applicant:
Inventors:
John E Hayes, Wilmington, DE (US);
Robert G Gastinger, West Chester, PA (US);
Assignee:
Arco Chemical Technology, L.P., Greenville, DE (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C08F / ; C08F / ; C08K / ;
U.S. Cl.
CPC ...
526262 ; 526328 ; 526335 ; 526346 ; 524762 ;
Abstract
Monomers having at least two reactive ethylenically unsaturated sites may be polymerized via a free-radical reaction in the presence of a polyol to produce a dispersant useful in preparing polymer polyols that find uses as coreactants to produce polyurethane foams. The monomers include, but are not limited to, polyethylenically unsaturated maleimides and acrylates. The dispersants prepared in this manner can be used in very small quantities, about 2 to 5 wt. % of the total polyol and still produce a styrene/acrylonitrile polymer polyol with high solids and high styrene levels.