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. 16, 1990
Filed:
Dec. 29, 1988
Jan Bock, Bridgewater, NJ (US);
Paul L Valint, Asbury, NJ (US);
Exxon Research and Engineering Company, Florham Park, NJ (US);
Abstract
A homogeneous micellar free radical polymerization process for the formation of a terpolymer having the structure of: ##STR1## wherein S is selected from the group consisting of SO.sub.3 M, phenyl SO.sub.3 M, CONHC(CH.sub.3).sub.2 CH.sub.2 SO.sub.3 M or COOM; M is selected from the group consisting of Groups IA, 1B, IIA and IIB of the Periodic Table of Elements, R.sub.1 is a C.sub.1 to C.sub.10 alkyl, cycloalkyl or aralkyl group, R.sub.2 is hydrogen or a C.sub.4 to C.sub.18 alkyl, cycloalkyl or aralkyl group, x is about 10 to about 90 mole %, y is about 0.1 to about 60 mole %, and z is about 0.2 to about 10 mole % which comprises the steps of forming a mixture of an anionic surfactant, a nonionic surfactant, ##STR2## under a nitrogen atmosphere; adding deoxygenated water to said mixture to form a homogeneous reaction solution; adding free radical initiator to said homogeneous reaction solution to initiate polymerization of said monomers; terpolymerizing said monomers at a sufficient temperature and for a sufficient period of time to form said terpolymer and without the formation of substantial amounts of particulates or phase separation occurring.