Rubber composition with enhanced curing and adhesion properties, process for its preparation, and engineered rubber products made therefrom

US12281227B2 · kind B2 · utility

Assignees

• L. Brüggemann GmbH & Co. KG · DE
• Allnex Germany GmbH · DE

Inventors

• Ümit Özkütükcü · Heilbronn, DE
• Anne Schulz · Flein, DE
• Stefan Mark · Bad Rappenau, DE
• Ralph D. Schafer · Williamsport, US

Key dates

• Filing date: Dec 9, 2019
• Grant date: Apr 22, 2025
• Expiry date: Dec 9, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2312/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a rubber composition with enhanced curing and adhesion properties, comprising the following ingredients: R1—an elastomer or rubber E which is preferably a diene-based elastomer, R2—a particulate active filler which is preferably carbon black, or silica, or a combination of both, R3—a cobalt free curing or crosslinking or vulcanising system which includes sulphur, an active zinc composition ZnX having a specific surface area of from 10 m2/g to 100 m2/g, and accelerators, R4—a novolak composition NC which is a mixture of a novolak resin PA and a urethane-aldehyde resin UA′, and R5—a methylene donor, to a process to cure these rubber compositions, and to a method of use of these rubber compositions in engineered rubber products selected from the group consisting of hoses, pressure hoses, conveyor belts, gaskets, and tyres.