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:
Dec. 14, 2010
Filed:
Jan. 03, 2007
Applicants:
Bernd Göbelt, Wesel, DE;
Jürgen Omeis, Dorsten-Lembeck, DE;
Sabine Johann, Oberhausen, DE;
Inventors:
Assignee:
BYK-Chemie GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 31/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to copolymers comprising three segments of different ion density, the fraction of the ionic monomers in each segment being from 1 to 100 mol %, the second and third segment containing ethylenically unsaturated monomers of the respectively preceding segment, and the copolymers being preparable by means of a monofunctional initiator by way of NMP or RAFT. The invention further relates to a process for preparing copolymers and to their use as dispersants.