Patent · US Expired

Copolymers of ethylene and methoxyacetic acid vinyl ester and their use as additives for mineral oil distillates

US4928720A · kind A · utility

0Cited by

1References

7Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Wolfgang Payer · Ulm, DE
Heinz Dieter Bühnen · Oberhausen, DE
Wilhelm Zoller

Key dates

Filing date	Jul 13, 1989
Grant date	May 29, 1990
Priority date	—
Expiry date	Jul 13, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/0391
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Copolymers consisting of 95 to 50 weight percent of ethylene and 5 to 50 weight percent of methoxyacetic acid vinyl ester and having a molecular mass from 500 to 10,000 g.times.mole .sup.-1. Methods for preparation and use are also disclosed. The copolymers are used as flow improvers for mineral oil distillates, in particular mineral oil middle distillates.

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