Patent · US Expired

Preparation of foams having high heat-distortion resistance, and foams based on aromatic polyether ketones

US5084484A · kind A · utility

2Cited by

5References

2Claims

0Family size

Assignee

BASF SE

Inventors

Eckhard Nintz · Ludwigshafen, DE
Heinz Weber · Uerdingen, DE
Wilhelm Nickolaus · Ludwigshafen, DE

Key dates

Filing date	Jun 7, 1990
Grant date	Jan 28, 1992
Priority date	—
Expiry date	Jun 7, 2010

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J9/08
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Foams of density 0.1 to 1.0 g/cm.sup.3 based on aromatic polyether ketones and other thermoplastic polymers having a high melting point are obtained by melting an intimate mixture of the polymer and from 0.5 to 10% by weight of an aliphatic or aromatic dicarboxylic acid or polycarboxylic acid which suffers a weight loss of 50% or more with elimination of gaseous decomposition products on heating to from 130 to 300.degree. C., and simultaneously cooling and molding the melt.

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