Rubber compositions

Claim 2

A rubber composition which comprises 100 parts by weight of Component (A) consisting of a naturally occurring and/or synthetic rubber and more than 0.01 part by weight of a hydrogen donative material selected from at least one of Components (B) of the group consisting of a hydrogenated oil [I] resulting from hydrogenation of coal tar or fractionates thereof, a petroleum oil fraction [II] boiling at above 200°C produced by thermal cracking, catalytic cracking or catalylic reforming, a hydrogenated pitch [III] boiling at 160° - 550°C resulting from hydrogenation of petroleum heavy oil and/or petroleum heavy oil having undergone a primary heat treatment, and a fraction [IV] boiling at 160° - 550°C of said hydrogenated pitch [III] having undergone a secondary heat treatment.

Claim 3

A rubber composition according to claim 1 wherein said coal tar or fractionates thereof [I] is an oil selected from the group consisting of a treated oil, anthracene oil, tar oil, tar gas oil, carvol oil, naphthalene oil, pitch oil, creosote oil, liquified coal tar oil and mixtures there of.

Claim 4

A rubber composition according to claim 1 wherein said petroleum oil fraction [II] is selected from the group consisting of a thermally cracked naphtha oil, catalytically cracked cycle oil, slurry oil, decanted oil (DCO), catalytically reformed naphtha residual oil, cracked crude oil tar and mixtures thereof.

Claim 5

A rubber composition according to claims 1 - 3 wherein said hydrogen donative material has a hydrogen transfer to a hydrogen acceptor of at least 0.1 (hydrogen atom/mol anthracene) at 350°C.

Claim 6

A rubber composition which comprises 100 parts by weight of Component (A) consisting of a naturally occurring and/or synthetic rubber and more than 0.01 part by weight of a hydrogen donative material selected from at least one of Components (B) of the group consisting of a hydrogenated oil [I] resulting from hydrogenation of coal tar or fractionates thereof, a petroleum oil fraction [II] boiling at above 200°C produced by thermal cracking, catalytic cracking or catalylic reforming, a hydrogenated pitch [III] boiling at 160° - 550°C resulting from hydrogenation of petroleum heavy oil and/or petroleum heavy oil having undergone a primary heat treatment, and a fraction [IV] boiling at 160° - 550°C of said hydrogenated pitch [III] having undergone a secondary heat treatment and 0.01 - 20 weight parts of at least one of Components (C) selected from the group consisting of hindered phenol-based, phosphor-based, thioether-based, amine-based and quinoline-based aging inhibitors.

Claim 7

A rubber composition which comprises 100 parts by weight of Component (A) consisting of a naturally occurring and/or synthetic rubber and more than 0.01 part by weight of a hydrogen donative material selected from at least one of Components (B) of the group consisting of a hydrogenated oil [I] resulting from hydrogenation of coal tar or fractionates thereof, a petroleum oil fraction [II] boiling at above 200°C produced by thermal cracking, catalytic cracking or catalylic reforming, a hydrogenated pitch [III] boiling at 160° - 550°C resulting from hydrogenation of petroleum heavy oil and/or petroleum heavy oil having undergone a primary heat treatment, and a fraction [IV] boiling at 160° - 550°C of said hydrogenated pitch [III] having undergone a secondary heat treatment and 0.01 - 20 weight parts of at least one of Components (C) selected from the group consisting of hindered phenol-based, phosphor-based, thioether-based, amine-based and quinoline-based aging inhibitors.