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:
May. 03, 2016
Filed:
Nov. 07, 2012
Basf SE, Ludwigshafen, DE;
Hermann Seyffer, Heidelberg, DE;
Carmen-Elena Cimpeanu, Ludwigshafen, DE;
Anja Song, Mannheim, DE;
Thomas Steinmacher, Obersulm, DE;
Joerg Claussen, Altrip, DE;
Philipp Zacharias, Leeds, GB;
Vijay Immanuel Raman, Mannheim, DE;
Petra Schoecker, Buerstadt, DE;
BASF SE, Ludwigshafen, DE;
Abstract
A paper coating slip additive obtainable by free-radical polymerization, its preparation and its use in paper coating compositions are described. The additive is formed from (a) acid monomers selected from ethylenically unsaturated C3 to C8 carboxylic acids, (b) associative monomers of the general formula HC═CR—COO-(EO)—(PO)—Rwhere Ris hydrogen or methyl, n is at least two, m is from zero to 50, EO is an ethylene oxide group, PO is a propylene oxide group and Ris a C8-C30 alkyl group or a C8-C30 alkaryl group, and (c) nonionic copolymerizable monomers other than a) and b), wherein said additive has a weight average molecular weight of below 200 000 and wherein tert-dodecyl mercaptan is used as chain transfer agent.