Rubber compositions containing preciptated organosilicon particles having a core and a shell

US6624214B2 · kind B2 · utility

Assignee

• The Goodyear Tire & Rubber Company · US

Inventors

• Rene Jean Zimmer · Howald, LU
• Wolfgang Lauer · Heilbronn, DE
• Marc Weydert · Bertrange, LU
• Friedrich Visel · Bofferdange, LU
• Uwe Ernst Frank · Marpingen, DE

Key dates

• Filing date: Feb 27, 2001
• Grant date: Sep 23, 2003
• Expiry date: May 3, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L21/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

There is disclosed a rubber composition comprising:(a) 100 parts by weight of at least one rubber containing olefinic unsaturation; and(b) 1 to 150 phr of a precipitated organosilicon particles having a core and a shell,wherein the core is obtained by the condensation of at least one monomer of the formula:R1—Si(OR2)3  I where R1 is selected from the group consisting of hydrogen, methyl, ethyl, vinyl, alkoxy having from 1 to 4 carbon atoms, and phenyl; R2 is selected from the group consisting of alkyls having from 1 to 4 carbon atoms and phenyl; and wherein said condensation of said monomer is in the presence of a surfactant; andwherein the shell is obtained by the subsequent addition to the core of a monomer of the formula:R3—Si(OR2)3  II where R3 is selected from the group consisting of—CH═CH2, —CH2—CH═CH2, &Parenopenst;CH2&Parenclosest;nSH and mixtures thereof; and n is an integer of from 2 to 8.