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:
Nov. 29, 1988
Filed:
Nov. 16, 1987
Donald N Schulz, Annandale, NJ (US);
Ilan Duvdevani, Leonia, NJ (US);
Jan Bock, Bridgewater, NJ (US);
Jeff J Kaladas, S. Bound Brook, NJ (US);
Exxon Research and Engineering Company, Florham Park, NJ (US);
Abstract
A water or brine soluble terpolymer having the structure: ##STR1## wherein x is selected from the group consisting of ##STR2## wherein x is about 70 to about 95 mole percent; y is about 0.1 to about 5.0 mole percent; z is about 1 to about 30 mole percent; R.sub.1 is methyl or hydrogen; a is about 1 to about 5; b is about 3 to about 4; R.sub.3 is an alkyl group of 3 to 4 carbon atoms; R.sub.4 is an alkyl group having about 1 to 5 carbon atoms; R.sub.5 is selected from the group consisting of an alkyl group having 1 to 30 carbons, a hydrocarbon aryl group having about 6 to 20 carbons and an alkylaryl group having the structure of ##STR3## wherein A is selected from the group consisting of hydrogen, methyl groups, ethyl groups and propyl groups and mixtures thereof and c is about 6 to 20; and n is about 1 to 60.