초록 ▼

A silicone-polymer-modified vulcanized-rubber composition based on unvulcanized rubber, characterized in that the composition can be produced by co-vulcanization from the following components: A1) at least one vinyl-reactive polysiloxane component, and/orA2) at least one mercapto-reactive polysiloxa

A silicone-polymer-modified vulcanized-rubber composition based on unvulcanized rubber, characterized in that the composition can be produced by co-vulcanization from the following components: A1) at least one vinyl-reactive polysiloxane component, and/orA2) at least one mercapto-reactive polysiloxane component, andB) at least one unsaturated vulcanizable unvulcanized-rubber component, and to a process for the production of said silicone-polymer-modified vulcanized-rubber composition based on unvulcanized rubber, and also to a windshield-wiper blade encompassing a silicone-polymer-modified vulcanized-rubber composition based on unvulcanized rubber.

대표청구항 ▼

1. A silicone-polymer-modified vulcanized-rubber composition based on unvulcanized rubber, characterized in that the composition is produced by co-vulcanization from the following components: A1) at least one vinyl-reactive polysiloxane component;A2) at least one mercapto-reactive polysiloxane compo

1. A silicone-polymer-modified vulcanized-rubber composition based on unvulcanized rubber, characterized in that the composition is produced by co-vulcanization from the following components: A1) at least one vinyl-reactive polysiloxane component;A2) at least one mercapto-reactive polysiloxane component, andB) at least one unsaturated vulcanizable unvulcanized-rubber component, wherein the weight-average molecular weight of the mercapto-reactive polysiloxane component A2) is from 3000 to 28 000 and wherein the vinyl-reactive polysiloxane component A1) has been selected from the group consisting of vinyldimethyl-terminated polydimethylsiloxanes, vinylmethylsiloxane-polydimethyl-siloxane copolymers, alkyldimethyl-terminated polydimethylsiloxanes, vinyl-terminated dimethyldiphenyl-siloxane copolymers, and branched polydimethylsiloxanes having a vinyl group at the branching point. 2. A silicone-polymer-modified vulcanized-rubber composition according to claim 1, characterized in that component B) has been selected from the group of natural unvulcanized rubber, polychloropropene, EPDM, EPM, and mixtures thereof. 3. A silicone-polymer-modified vulcanized-rubber composition according to claim 1, characterized in that the mercapto-reactive polysiloxane component A2) has been selected from the group consisting of polydimethylsiloxane-methylmercaptopropylsiloxane copolymers, branched polydimethylsiloxanes having a mercapto group at the branching points, and mercaptoalkyl-terminated polydimethylsiloxanes. 4. A silicone-polymer-modified vulcanized-rubber composition according to claim 1, characterized in that the weight-average molecular weight of the mercapto-reactive polysiloxane component A2) is from 5000 to 10 000. 5. A silicone-polymer-modified vulcanized-rubber composition according to claim 1, characterized in that the mercapto-reactive component A2) is used in a ratio by weight with respect to component B) which is from 1:100 to 20:100. 6. A silicone-polymer-modified vulcanized-rubber composition according to claim 1, characterized in that the weight-average molecular weight of the polysiloxane component A1) is from 200 to 310 000. 7. A silicone-polymer-modified vulcanized-rubber composition according to claim 6, characterized in that the mercapto-reactive polysiloxane component A2) has been selected from the group consisting of polydimethylsiloxane-methylmercaptopropylsiloxane copolymers, branched polydimethylsiloxanes having a mercapto group at the branching points, and mercaptoalkyl-terminated polydimethylsiloxanes. 8. A silicone-polymer-modified vulcanized-rubber composition according to claim 7, characterized in that the weight-average molecular weight of the mercapto-reactive polysiloxane component A2) is from 5000 to 10 000. 9. A silicone-polymer-modified vulcanized-rubber composition according to claim 7, characterized in that the vinyl-reactive component A1) and/or the mercapto-reactive component A2) is used in a ratio by weight with respect to component B) which is from 1:100 to 20:100. 10. The silicone-polymer-modified vulcanized-rubber composition according to claim 7, wherein the vinyl-reactive component A1) and/or the mercapto-reactive component A2) is used in a ratio by weight with respect to component B) which is from 3:100 to 7:100. 11. The silicone-polymer-modified vulcanized-rubber composition according to claim 1, wherein the vinyl-reactive component A1) is used in a ratio by weight with respect to component B) which is from 1:100 to 20:100. 12. The silicone-polymer-modified vulcanized-rubber composition according to claim 1, wherein the vinyl-reactive component A1) is used in a ratio by weight with respect to component B) which is from 3:100 to 7:100. 13. The silicone-polymer-modified vulcanized-rubber composition according to claim 1, wherein the mercapto-reactive component A2) is used in a ratio by weight with respect to component B) which is from 3:100 to 7:100. 14. The silicone-polymer-modified vulcanized-rubber composition according to claim 1, wherein the weight-average molecular weight of the polysiloxane component A1) is from 28 000 to 120 000.