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:
Jan. 31, 1995
Filed:
Mar. 22, 1993
Thomas Sauer, Haltern, DE;
Bernhard Stutzel, Marl, DE;
Huels Aktiengesellschaft, Marl, DE;
Abstract
Method of producing sterically stabilized polymer dispersions by polymerizing ethylenically unsaturated monomers in an aqueous phase (as a dispersion medium) in the presence of an initiator system and a water-soluble macromonomer which is an esterification product of maleic acid, fumaric acid, maleic anhydride, or mixture thereof and polyalkylene glycols and/or monoalkyl ether of polyalkylene glycol, having a degree of esterification between 50% and 100%. The dispersions obtained according to this method possess high electrolyte stability, shear stability, and frost stability, even without addition of conventional emulsifiers and emulsification adjuvants.