Copolymers comprising a-olefins and olefin dicarboxylic acid esters, production thereof, and use thereof as pour point depressants for crude oils, mineral oils, or mineral oil products

US10781385B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Ivette Garcia Castro · Ludwigshafen, DE
• Kai Gumlich · Mannheim, DE
• Stefan Frenzel · Weinheim, DE
• Maria Heuken · Schwarzheide, DE
• Rouven Konrad · Mörstadt, DE
• Karin Neubecker · Bischofswerda, DE
• Edward Bohres · Ludwigshafen, DE
• Adam Blanazs · Mannheim, DE

Key dates

• Filing date: Nov 17, 2016
• Grant date: Sep 22, 2020
• Expiry date: Jan 6, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10L2270/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Copolymers comprising C14 to C50 olefins and at least two different olefindicarboxylic esters and optionally maleic acid or maleic acid derivatives. The olefindicarboxylic esters are firstly esters with linear C18- to C50-alkyl groups and secondly esters with short-chain linear, branched or cyclic alkyl groups, or esters with aromatic groups. The invention further relates to a process for preparing copolymers of this kind and to the use thereof as pour point depressant for crude oil, mineral oil and/or mineral oil products, preferably as pour point depressant for crude oil.