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:
Nov. 08, 1977
Filed:
Jan. 08, 1976
Applicant:
Inventors:
Klaus Kackstaedter, Leverkusen, DT;
Hans Theidel, Leverkusen, DT;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D06P / ;
U.S. Cl.
CPC ...
8 1 / ; 8 21 / ; 8 22 ; 8 54 ; 8 542 ; 8 89 / ; 8 92 ; 8179 ; 25230121 ; 25230133 ;
Abstract
Process for whitening textile fibres of polyesters or blended fibres of polyesters and cellulose or wool with dispers fluorescent whitening agents according to a combined exhaustion and thermo-fixing process, in the presence of auxiliaries e.g. esters in combination with water-soluble alkali metal salts or ampholytes which are capable of forming an aqueous two-phase system.