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:
Jan. 26, 2016
Filed:
Dec. 08, 2011
Matthias Krull, Harxheim, DE;
Roman Morschhaeuser, Mainz, DE;
Hans Juergen Scholz, Alzenau, DE;
Clariant International Ltd., Muttenz, CH;
Abstract
The invention relates to a method for reacting polymers (A) comprising hydroxyl groups and which have repetitive structural units of general formula (I), wherein D represents a direct bond between the polymer backbone and a hydroxyl group, a C- to C-alkene group, a C- to C-arylene group, an oxyalkylene group of formula —O—R—, an ester group of formula —C(O)—O—R— or an amide group of formula —C(O)—N(R)R—, Rrepresents a C- to C-alkene group, Rrepresents hydrogen or an optionally substituted C- to C-alkyl group and n represents a number between 3 and 5000, with carboxylic acids B1) of formula (II) or carboxylic acid esters B2) of formula (III) R—COOH (II) R—COOR(III), wherein Rrepresents a hydrocarbon group having 2 to 50 C atoms, and Rrepresents a CC-alkyl group, in which the polymers (A); comprising the hydroxyl groups are exposed to microwaves in the presence of carboxylic acids of formula (II) or carboxylic acid esters of formula (III) and in the presence of water. The reaction mixture is heated to temperatures over 100° C. by microwave rays.