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:
Aug. 30, 1994
Filed:
Jun. 28, 1993
Friedrich Seitz, Friedelsheim, DE;
Karl Ruppmich, Ludwigshafen, DE;
Norbert Guentherberg, Mainz, DE;
Norbert Niessner, Friedelsheim, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A particulate graft polymer comprising A: from 30 to 80% by weight of one or more elastomeric polymers A having a mean particle size of from 30 to 1000 run, comprising, based on A, A1: from 85 to 99.8% by weight of one or more alkyl acrylates A1 having from 1 to 8 carbon atoms in the alkyl radical, A2: from 0.1 to 5% by weight of one or more polyfunctional, crosslinking monomers A2, and A3: from 0.1 to 10% by weight of one or more monomers A3 containing one or more acid groups, or A11: up to 100% by weight of a diene A11, A12: up to 50% by weight of one or more vinyl-aromatic monomers A12, A13: up to 10% by weight of one or more monomers A13 containing one or more acid groups, as the graft base, and B: from 20 to 70% by weight of a shell B grafted onto the elastomeric polymer A and comprising, based on B, B1: from 50 to 89.9% by weight of one or more vinylaromatic monomers B1, B2: from 10 to 49.9% by weight of one or more polar, copolymerizable, ethylenically unsaturated monomers B2, and B3: from 0.1 to 10% by weight of one or more monomers B3 containing one or more basic groups.