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. 10, 2010
Filed:
Nov. 23, 2009
Robert Cockcroft, Bradford, GB;
David Petty, Bradford, GB;
Frank J. L. Leroy, Quillebeuf sur Seine, FR;
Francis Mark Prince, Le Havre, FR;
Nils Hoeck, Muellheim, DE;
Paul Guedj, Savigny le Temple, FR;
Robert Cockcroft, Bradford, GB;
David Petty, Bradford, GB;
Frank J. L. Leroy, Quillebeuf sur Seine, FR;
Francis Mark Prince, Le Havre, FR;
Nils Hoeck, Muellheim, DE;
Paul Guedj, Savigny le Temple, FR;
Ciba Specialty Chemicals Corp., Tarrytown, NY (US);
Abstract
Disclosed is a quenching medium for treating a heated metal part, said medium comprising water and a polyacrylate terpolymer comprising acrylamide and/or methacrylamide monomer units, acrylic acid and/or methacrylic acid monomer units and alkyl alkoxylate allyl ether monomer units where the acid groups are in the form of an alkali metal salt and where the alkyl alkoxylate allyl ether monomers are of the formula where n is an integer from 1 to about 30, R is ethylene, propylene or butylene and G is an alkyl group of 8 to 30 carbon atoms. Also disclosed is a method for quenching a heated metal part, which process comprises immersing said metal part in the quenching medium. Also disclosed are the polyacrylate ternary copolymers.