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:
May. 25, 1976
Filed:
Sep. 17, 1974
Applicant:
Inventor:
Ewald Schneider, Tamins, CH;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ; C08L / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 2603 / ;
Abstract
The invention relates to a process for reducing degradation in the spinning of fiber-forming polyesters by adding to the polyester granules before spinning compounds of the general formula ##SPC1## In which hydrogen atoms may be replaced by alkyl or aryl radicals. These compounds react with the carboxyl end groups of the polyester, whereby in addition to the lesser degradation, a reduction of the number of free carboxyl end groups in the fiber is also obtained.