US 12,258,450 B2
Rubber compositions containing polyorganosiloxanes as plasticizers
Volker Börger, Hamburg (DE); Dörte Becker, Hamburg (DE); Theresia Klose, Dresden (DE); and Uwe Dittrich, Radebeul (DE)
Assigned to SCHILL + SEILACHER STRUKTOL GMBH, Hamburg (DE)
Appl. No. 17/596,838
Filed by SCHILL + SEILACHER STRUKTOL GMBH, Hamburg (DE)
PCT Filed Jun. 26, 2020, PCT No. PCT/EP2020/068023
§ 371(c)(1), (2) Date Dec. 20, 2021,
PCT Pub. No. WO2020/260580, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 19182809 (EP), filed on Jun. 27, 2019.
Prior Publication US 2022/0315708 A1, Oct. 6, 2022
Int. Cl. B60C 1/00 (2006.01); C08F 236/08 (2006.01); C08G 77/20 (2006.01); C08L 11/00 (2006.01); C08L 15/02 (2006.01); C08L 23/22 (2006.01); C08L 91/00 (2006.01)
CPC C08G 77/20 (2013.01) [B60C 1/00 (2013.01); C08F 236/08 (2013.01); C08L 11/00 (2013.01); C08L 15/02 (2013.01); C08L 23/22 (2013.01); C08L 91/00 (2013.01)] 17 Claims
 
1. A process of using one or more modified polyorganosiloxane as a plasticizer in a rubber composition, the method comprising:
combining the one or more modified polyorganosiloxane with rubber to form a combination;
vulcanizing the rubber in the combination by vulcanizing with one or more crosslinking resin; and
using the vulcanized rubber to form the rubber composition, wherein the rubber composition comprises the one or more modified polyorganosiloxane,
wherein the one or more modified polyorganosiloxane contains 3 or more siloxane units and:
one or more organic moiety R1, which have one or more carbon-carbon multiple bonds and at least 4 carbon atoms, and one or more alkyl radicals R2, wherein R2 has a chain length of from 5 to 50 carbon atoms and is longer that a chain length of R1; or
two or more organic moieties R1, which have one or more carbon-carbon multiple bonds and at least 4 carbon atoms.