Accelerator combinations

US5830817A · kind A · utility

Assignee

• Rhein Chemie Rheinau GmbH · DE

Inventors

• Hans-Joachim Graf · Manheim, DE
• Volker Schafer · Altrip, DE
• Hartmut Schulz · Heidelberg, DE
• Erich Schmidt · Lexington, US
• Hans-Martin Issel · Chiba, JP
• Hans-Dieter Voss · Münstermaifeld, DE
• Harald Kleinknecht · Alzey, DE
• Manfred Schweiger · Bürstadt, DE

Key dates

• Filing date: Jan 14, 1997
• Grant date: Nov 3, 1998
• Expiry date: Jan 14, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/5398
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A vulcanization accelerator combination based on di-(C.sub.6 -C.sub.12 alkyl)dithiophosphates for vulcanizing non-polar rubbers, comprising the following components: (a) a di-(C.sub.6 -C.sub.12 alkyl)dithiophosphate; (b) one or more compounds selected from the group consisting of sulphenamides, thiazoles and carbamates; (c) sulfur and/or a sulfur donor; and (d) at least one additional accelerator compound having a specific chemical structure that is different from the chemical structure of component (a) and any of the compounds used as component (b) in said accelerator combination.