Patent · US Expired

Lubricant, containing esterified ethylene/acrylic acid or ethylene/maleic acid copolymers as the active ingredient, for moulding chlorine-containing thermoplastics

US4438008A · kind A · utility

7Cited by

3References

6Claims

0Family size

Assignee

BASF SE

Inventors

Dieter Oeder · Bad Dürkheim, DE
Walter Ziegler · Trier, DE
Manfred Daeuble · Bischofswerda, DE
Wolfram Dietsche · Bischofswerda, DE
Albert Hettche · Heßheim, DE
Stefan Weiss · Trostberg, DE

Key dates

Filing date	Feb 12, 1982
Grant date	Mar 20, 1984
Priority date	—
Expiry date	Feb 12, 2002

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L23/08
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A lubricant for molding chlorine-containing thermoplastics, which contains ethylene/acrylic acid or ethylene/maleic acid copolymers esterified, in a molar ratio of carboxyl groups to alcoholic hydroxyl groups of from 1:0.2 to 1:1, with C.sub.1 -C.sub.20 -aliphatic alcohols which may or may not contain ether groups, the copolymers, prior to esterification, having a mean molecular weight of from 500 to 10,000 and containing from 2 to 15% by weight of acrylic acid or from 1 to 8% by weight of maleic acid as copolymerized units, the percentages being based on copolymer.

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