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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.:

US 9238732 B1

PDFFull Text
Expired
Date of Patent:
Jan. 19, 2016

Filed:

Nov. 20, 2013

Low molecular weight phosphorus-containing polyacrylic acids and use thereof as dispersants

Applicant:

Basf SE, Ludwigshafen, DE;

Inventors:

Howard Roger Dungworth, Brighouse, GB;

David Petty, Bradford, GB;

Bolette Urtel, Bobenheim-Roxheim, DE;

Ruth Wirschem, Mannheim, DE;

Assignee:

BASF SE, Ludwigshafen, DE;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Vu A Nguyen

Int. Cl.
CPC ...
C08L 33/02 (2006.01); C08K 3/26 (2006.01); C08F 220/06 (2006.01); C08F 8/06 (2006.01); C08F 8/40 (2006.01); C08F 230/02 (2006.01);
U.S. Cl.
CPC ...
C08L 33/02 (2013.01); C08F 8/06 (2013.01); C08F 8/40 (2013.01); C08F 220/06 (2013.01); C08K 3/26 (2013.01); C08F 230/02 (2013.01);
Abstract

An aqueous solution of an acrylic acid polymer which contains bound phosphonite groups is provided. The acrylic acid polymer is prepared by a feed operation polymerization which results in the formation of phosphinite groups bound within the acrylic acid polymer chain. The dried acrylic acid polymer is also provided. Dispersions of inorganic pigments prepared in the presence of the acrylic acid polymer or the aqueous solution of the acrylic acid polymer are also provided.

Find Patent Forward Citations

Dungworth, Howard. (2016). Low molecular weight phosphorus-containing polyacrylic acids and use thereof as dispersants (U.S. Patent No. 9238732). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9238732

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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