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:
Apr. 10, 1990
Filed:
Sep. 01, 1987
Albert B Brown, Warrington, PA (US);
Paul H Gehlhaus, Warrington, PA (US);
William H Harrop, Elverson, PA (US);
Dennis P Lorah, Lansdale, PA (US);
Thomas G Madle, Flourtown, PA (US);
Travis E Stevens, Ambler, PA (US);
Ted Tysak, Philadelphia, PA (US);
Constance A Lane, Philadelphia, PA (US);
Rohm and Haas Company, Independence Mall West, DE (US);
Abstract
Disclosed herein are core-shell polymers having an alkali-insoluble, emulsion polymer core and an alkali-soluble, emulsion polymer shell attached or associated with said core so that upon dissolving said shell with alkali, a portion of said shell remains attached or associated with said core. Also disclosed are compositions wherein said shell polymer has been neutralized and substantially, but not totally, dissolved so as to form a blend of neutralized core-shell polymer and an aqueous solution of neutralized shell polymer.