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. 01, 1995
Filed:
Dec. 13, 1993
Wolfgang Fischer, Ludwigshafen, DE;
Norbert Guentherberg, Speyer, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
Abstract of the disclosure: A particulate graft copolymer comprises 30 to 90% by weight of at least one elastomeric grafting base A having a weight average particle size of from 30 to 1,000 nm comprising, based on A, 85 to 99.8% by weight of at least one alkyl acrylate A11 having 1 to 8 carbon atoms in the alkyl radical, 0.1 to 5% by weight of at least one polyfunctional, crosslinking monomer A12, and 0.1 to 10% by weight of at least one hydroxyalkyl acrylate or hydroxyalkyl methacrylate A13 or at least 50% by weight of one or more dienes A111, up to 50% by weight of one or more ethylenically unsaturated monomers A112, and 0.1 to 10% by weight of at least one hydroxyalkyl acrylate or hydroxyalkyl methacrylate A113 and 10 to 70% by weight of a graft sheath B comprising, based on B, up to 99.9% by weight of at least one aromatic vinyl monomer B1, up to 99.9% by weight of at least one polar, copolymerizable, ethylenically unsaturated monomer B2, and 0.1 to 20% by weight of at least one monomer B3 containing one or more basic or acid groups.