Adhesion promoters for the production of volcanizates having a favorable filler/elastomer bond

US4681961A · kind A · utility

Assignee

• Huels Aktiengesellschaft · DE

Inventors

• Dieter Zerpner
• Roland Streck · Marl, DE
• Horst G. Haag · Marl, DE

Key dates

• Filing date: Feb 10, 1986
• Grant date: Jul 21, 1987
• Expiry date: Feb 10, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/1804
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Novel adhesion promoters having, on the one hand, groups capable of forming a stable chemical bond with the surface of silicic acids and silicates (siloxane bond) and, on the other hand, groups capable of forming, during vulcanization, a stable chemical bond with an elastomer (sulfur bridges) are provided. They are consequently suitable as adhesion promoters for the production of vulcanizates exhibiting a favorable filler/elastomer bond. They are oligosulfanes of the formula EQU (RO).sub.3 Si--Y--S.sub.x --Y--Si(OR).sub.3 wherein R, Y and x are defined herein, or a mixture of an oligosulfane of this formula (main product) and of a structurally related, substantially dimeric condensation product, which is characterized by a siloxane bond (by-product).