Patent · US Expired

Composite having two or more layers, including an EVOH layer

US7175896B2 · kind B2 · utility

16Cited by

43References

60Claims

0Family size

Assignee

Degussa AG · DE

Inventors

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

Key dates

Filing date	Oct 9, 2003
Grant date	Feb 13, 2007
Priority date	—
Expiry date	Dec 5, 2023

Classification

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

Abstract

A layered composite contains the following layers: (I) a layer I composition containing (a) from 0 to 80 parts by weight of at least one 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 polyamide; and (II) a layer II composition containing at least one ethylene-vinyl alcohol copolymer.

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