Patent · US Active

Composite having two or more layers, including an EVOH layer

US8048504B2 · kind B2 · utility

3Cited by

55References

15Claims

0Family size

Assignee

EVONIK DEGUSSA GMBH · DE

Inventors

Guido Schmitz · Schneverdingen, DE
Harald Haeger · Thedinghausen, DE
Hans Ries · Marl, DE
Wilfried Bartz · Marl, DE

Key dates

Filing date	Feb 22, 2006
Grant date	Nov 1, 2011
Priority date	—
Expiry date	Aug 1, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/3175
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A layered composite which includes the following layers (I) and (II), wherein layer (I) includes (a) from 0 to 80 part by weight of at least one particular polyamide; (b) from 0 to 100 parts by weight of at least one polyamine-polyamide copolymer; and (c) from 0 to 80 parts by weight of at least one particular polyamide which is different from (a), wherein various monomer units are present in at least 20 parts by weight of the entirety of (a) and (b) and various other monomer units are present in at least 20 parts by weight of the entirety of (b) and (c); and layer (II) includes at least one ethylene-vinyl alcohol copolymer.

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