Patent · US Expired

Multilayer composite plastics material containing a barrier layer of polybutylene terephthalate

US6517918B1 · kind B1 · utility

2Cited by

9References

7Claims

0Family size

Assignee

Basell Polyolefine GmbH · DE

Inventors

Wolfgang Rohde · Speyer, DE
Ulrich Buschges · Monsheim, DE
Bernhard Springholz · Malsch, DE

Key dates

Filing date	Jan 7, 1999
Grant date	Feb 11, 2003
Priority date	—
Expiry date	Jan 7, 2019

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31913
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A multilayer composite plastics material, containing at least one layer (A), which consists, to an extent of least 90 wt %, based on the total weight of this layer, of ethylene homopolymers or copolymers, at least one barrier layer (B), which substantially consists of polybutylene terephthalate, and also, if desired, layers of adhesion promoter (C) serving to improve the adhesion between these layers.

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