Anti-corrosion composition comprising polyisobutylenes

US10557041B2 · kind B2 · utility

Assignee

• DENSO CORPORATION · JP

Inventors

• Thomas Kaiser · Kelkheim, DE
• Oleg Gryshchuk · Leverkusen, DE

Key dates

• Filing date: Nov 15, 2016
• Grant date: Feb 11, 2020
• Expiry date: Nov 15, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/025
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Anti-corrosion composition comprising at least a first polyisobutylene with a Staudinger index J0 ranging from about 15 cm3/g to about 98 cm3/g and an average relative molar mass MV ranging from about 32,000 g/mol to about 280,000 g/mol and at least a second polyisobutylene with a Staudinger index J0 ranging from about 105 cm3/g to about 238 cm3/g and an average relative molar mass MV ranging from about 350,000 g/mol to about 900,000 g/mol.