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:
Mar. 22, 1977
Filed:
Dec. 31, 1974
Applicant:
Inventors:
Assignee:
Toyobo Co., Ltd., , JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 260 / ; 260 / ; 260 / ; 260 / ; 260 / ;
Abstract
A polyester-polyether block copolymer composition being very stable even in the presence of heavy metals, which comprises a polyester-polyether block copolymer consisting of segments of polyester units and segments of polyether units; at least one compound containing the group of the following formula: ##STR1## wherein X is oxygen or sulfur, R.sub.1, R.sub.2 and R.sub.3 are each hydrogen or an organic residue, or R.sub.2 and R.sub.3 forms a Schiff's base with the adjacent nitrogen, and R.sub.4 and R.sub.5 are each hydrogen or an organic residue; at least one radical scavenger and/or at least one peroxide decomposer.