Polymer mixtures for improving the low-temperature flow properties of mineral oil distillates

US4985048A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Herbert Wirtz · Eppstein, DE
• Michael Feustel · Kelkheim, DE
• Juliane Balzer · Frankfurt am Main, DE

Key dates

• Filing date: Dec 14, 1988
• Grant date: Jan 15, 1991
• Expiry date: Dec 14, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10L1/2364
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Polymer mixtures of a copolymer (A.sub.1) made from 10-60% by weight of vinyl acetate and 40-90% by weight of ethylene or a copolymer (A.sub.2) made from 15-50% by weight of vinyl acetate, 0.5-20% by weight of C.sub.6 -C.sub.24 -.alpha.-olefin and 30-70% by weight of ethylene, and a copolymer (B) made from 10-90% by weight of C.sub.6 -C.sub.24 -.alpha.-olefin and 10-90% by weight of N-C.sub.6 -C.sub.12 -alkylmaleiimide, the mixing ratio of copolymers (A.sub.1) or (A.sub.2) to (B) being 100:1 to 1:1. These polymer mixtures are employed as flow improvers in mineral oil distillates.