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:
Sep. 11, 1990
Filed:
Feb. 08, 1989
Applicant:
Inventors:
Sven H Ruetman, Walnut Creek, CA (US);
Joginder N Anand, Clayton, CA (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 60 ; 528 65 ;
Abstract
The invention relates to bulk polyurethane ionomers prepared by the reaction (A) an isocyanate terminated ionic prepolymer with (B) a hydrocarbon polyol chain extender, said prepolymer having been prepared from (i) an excess of diisocyanate, (ii) a mixture comprising a diol and an organic polyol having three or more reactive hydroxyl moieties each having a molecular weight of from about 250 to about 6,000 and (iii) a difunctional isocyanate-reactive component containing an ionic group or potential ionic group.