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:
Feb. 02, 1982
Filed:
Jan. 07, 1980
Applicant:
Inventors:
Friedrich Engelhardt, Frankfurt am Main, DE;
Karl Hintermeier, Frankfurt am Main, DE;
Joachim Ribka, Offenbach am Main-Burgel, DE;
Walter Dursch, Konigstein, DE;
Walter Rupp, Konigstein, DE;
Assignee:
Cassella Aktiengesellschaft, Frankfurt am Main Fechenheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; D06P / ; D06P / ;
U.S. Cl.
CPC ...
528287 ; 8552 ; 8584 ;
Abstract
Improved polyesters soluble or dispersible in water having an apparent average molecular weight of 800 to 5,000 and containing phosphonic ester moieties are useful as levelling auxiliaries for uniform dyeing and are produced by esterifying dibasic acids and dihydric alcohols, either or both of which contain phosphonic acid moieties, phosphonic acid ester moieties or both.