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. 06, 1996
Filed:
Feb. 10, 1994
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
Use of copolymers based on vinyl monomers and carboxylic acid amides as a detergent additive The present invention relates to the use of copolymers comprising 75-95% by weight of the total amount of the monomer of at least one vinyl monomer which is free from carboxyl and amide groups, 5-20% by weight of at least one carboxylic acid amide of the formula (I) ##STR1## in which R is a hydrogen atom or a methylol radical, R.sup.1 is a hydrogen atom or a C.sub.1 -C.sub.3 -alkyl radical and R.sup.2 is a hydrogen atom or a methyl radical and if appropriate together with not more than 5% by weight of a copolymerizable unsaturated carboxylic acid, as a detergent additive for preventing the reabsorption of detached dyestuffs and dyestuff degradation products.