Patent · US Active

Oxygen scavenging plastic material

US11447627B2 · kind B2 · utility

1Cited by

2References

20Claims

0Family size

Assignee

Clariant Plastics & Coatings Ltd · CH

Inventors

Mike Sahl · Bad Camberg, DE
Martijn GILLISSEN · Frankfurt, DE
Maria Victoria Rodriguez · Milano, IT

Key dates

Filing date	Feb 12, 2018
Grant date	Sep 20, 2022
Priority date	—
Expiry date	Mar 18, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2310/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a polyether-polyester copolymer comprising: (i) polyether segments wherein at least one polyether segment contains at least one polytetramethylene oxide segment, (ii) polyester segments, (iii) bridging elements of the structure —CO—R2-CO—, wherein R2 represents an optionally substituted bivalent hydrocarbon residue consisting of 1 to 100 carbon atoms; (iv) one or two end-caps R1-O—(C2-C4—O—)e—*, wherein R1 is an optionally substituted hydrocarbon residue and e is an integer of from 0 to 1000.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.