초록 ▼

The invention relates to a sulfur curable (and cured) rubber composition which contains one or more pentaerythritol derivatives as pentaerythritol tetrabenzoate (PTB) and/or pentaerythritol tetrakis (3,5-di-tert-butyl-4-hydroxyhydrocinnamate) (PTHC) together with a low molecular weight polyester seb

The invention relates to a sulfur curable (and cured) rubber composition which contains one or more pentaerythritol derivatives as pentaerythritol tetrabenzoate (PTB) and/or pentaerythritol tetrakis (3,5-di-tert-butyl-4-hydroxyhydrocinnamate) (PTHC) together with a low molecular weight polyester sebacate. Such combination of materials has been observed to increase resistance to tear for a rubber composition. The invention particularly relates to a tire having a component comprised of such rubber composition.

대표청구항 ▼

1. A rubber composition which comprises, based upon parts by weight per 100 parts by weight elastomer (phr); (A) 100 parts by weight of at least one diene-based elastomer, (B) about 1 to about 20 phr of (1) pentaerythritol tetrabenzoate (PTB) or (2) pentaerythritol tetrakis 3, 5-di-tert-butyl

1. A rubber composition which comprises, based upon parts by weight per 100 parts by weight elastomer (phr); (A) 100 parts by weight of at least one diene-based elastomer, (B) about 1 to about 20 phr of (1) pentaerythritol tetrabenzoate (PTB) or (2) pentaerythritol tetrakis 3, 5-di-tert-butyl-4-hydroxyhydrocinnamate) (PTHC), and (C) about 1 to about 20 phr of polyethylene sebacate having a molecular weight in a range of about 1000 to about 3000 so long as it has a melt point below 0° C. 2. The rubber composition of claim 1 wherein said additive is pentaerythritol tetrabenzoate. 3. The rubber composition of claim 1 wherein said additive is pentaerythritol tetrakis (3,5-di-tert-butyl-4-hydroxyhydrocinnamate). 4. The rubber composition of claim 1 as a sulfur cured rubber composition. 5. The rubber composition of claim 2 as a sulfur cured rubber composition. 6. The rubber composition of claim 3 as a sulfur cured rubber composition. 7. An article of manufacture having at least one component comprised of the rubber composition of claim 1. 8. An article of manufacture having at least one component comprised of the rubber composition of claim 4. 9. An article of manufacture having at least one component comprised of the rubber composition of claim 5. 10. An article of manufacture having at least one component comprised of the rubber composition of claim 6. 11. A tire having at least one component comprised of the rubber composition of claim 1. 12. A tire having at least one component comprised of the rubber composition of claim 4. 13. A tire having at least one component comprised of the rubber composition of claim 5. 14. A tire having at least one component comprised of the rubber composition of claim 6. 15. A tire having a tread comprised of the rubber composition of claim 1. 16. A tire having a tread comprised of the rubber composition of claim 4. 17. A tire having a tread comprised of the rubber composition of claim 5. 18. A tire having a tread comprised of the rubber composition of claim 6. 19. A tire having at least one component comprised of the rubber composition of claim 1 wherein said diene-based elastomer is selected from at least one of homopolymers of isoprene, homopolymers of 1,3-butadiene, copolymers of isoprene and 1,3-butadiene and copolymers of styrene and at least one of isoprene and 1,3-butadiene. 20. A tire having a tread comprised of the rubber composition of claim 4 wherein said diene-based elastomer is selected from at least one of homopolymers of isoprene homopolymers of 1,3-butadiene, copolymers of isoprene and 1,3-butadiene and copolymers of styrene and at least one of isoprene and 1,3-butadiene.