Heat-curable rubber compositions having plastisol-like rheological properties

US9951211B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Ralf Sauer · Overpelt, BE
• Peter Born · Sandhausen, DE
• Karin Weidenauer · Heidelberg, DE

Key dates

• Filing date: Jun 16, 2016
• Grant date: Apr 24, 2018
• Expiry date: Jun 16, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J2409/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to heat-curing reactive compositions based on natural and/or synthetic liquid elastomers containing olefinic double bonds and on vulcanizing agents, where these comprise a quantity, relative to the entire composition, of from 1 to 25% by weight, preferably from 1 to 15% by weight, of at least one liquid polyisoprene, preferably at least one cis-1,4 polyisoprene; a quantity, relative to the entire composition, of from 0.5 to 10% by weight, preferably from 0.5 to 5% by weight, of at least one functionalized liquid polybutadiene; a quantity, relative to the entire composition, of up to 40% by weight, preferably from 1 to 25% by weight, of a triglyceride fraction, the distribution of fatty acid in which comprises a proportion of at least 5% by weight, more particularly at least 60% by weight, of one or more omega-3 fatty acids and/or one or more omega-6 fatty acids; and at least one vulcanizing agent, where the proportion, relative to the entire composition, of synthetic polymers having at least one C═C double bond and/or at least one C≡C triple bond is at least 7.5% by weight, preferably 9% by weight. These have plastisol-like rheology and therefore can be applie…