摘要:
The present invention is directed to a method for maintaining the black sidewall appearance of a tire. It is further directed to a pneumatic tire comprising a sidewall, the sidewall comprising a rubber composition comprising 100 parts by weight of at least one diene based rubber; from 10 to 70 parts by weight, per 100 parts by weight of diene based rubber (phr) of a rubber process oil selected from the group consisting of aromatic, paraffinic, naphthenic, vegetable oils other than castor oil, and low PCA oils including MES, TDAE, SRAE and heavy naphthenic oils; and from 0.5 to 3 parts by weight, per 100 parts by weight of diene based rubber (phr) of a triglyceride derived from fatty acids comprising at least 80 percent by weight of at least one of ricinoleic acid and 12-hydroxy stearic acid.
摘要:
A pneumatic tire having a rubber sidewall including (A) 30 to 80 phr of natural rubber; (B) 20 to 70 phr of cis 1,4-polybutadiene rubber; (C) from 10 to 100 phr of silica; and (D) from 1 to 30 phr of a particulate rubber gel filler selected from the group consisting of polybutadiene gel, styrene butadiene gel, acrylonitrile-butadiene gel, chloroprene gel, natural rubber gel, and mixtures thereof.
摘要:
A rubber composition for use in a tire tread and a respective tread and pneumatic tire with such a tread is dieclosed. The rubber composition comprises from 20 to 90 part by weight per 100 parts by weight of rubber (phr) of a solution polymerized styrenebutadiene rubber; from 10 to 80 phr of a polybutadiene rubber, wherein from 0 to 20 weight percent of the polybutadiene rubber is a syndiotactic polybutadiene rubber comprising at least 70 percent of monomeric units in syndiotactic 1,2 configuration and the balance of the polybutadiene rubber comprises at least 90 percent of monomeric units in cis-1,4 configuration; and from 50 to 150 phr of pre-hydrophobated silica, preferably precipitated silica, wherein the pre-hydrophobated silica is hydrophobated prior to its addition to the rubber composition by treatment with at least one silane selected from the group consisting of alkylsilanes, alkoxysilanes, organoalkoxysilyl polysulfides and organomercaptoalkoxysilanes.
摘要:
A rubber composition for use in a tire tread and a respective tread and pneumatic tire with such a tread is dieclosed. The rubber composition comprises from 20 to 90 part by weight per 100 parts by weight of rubber (phr) of a solution polymerized styrenebutadiene rubber; from 10 to 80 phr of a polybutadiene rubber, wherein from 0 to 20 weight percent of the polybutadiene rubber is a syndiotactic polybutadiene rubber comprising at least 70 percent of monomeric units in syndiotactic 1,2 configuration and the balance of the polybutadiene rubber comprises at least 90 percent of monomeric units in cis-1,4 configuration; and from 50 to 150 phr of pre-hydrophobated silica, preferably precipitated silica, wherein the pre-hydrophobated silica is hydrophobated prior to its addition to the rubber composition by treatment with at least one silane selected from the group consisting of alkylsilanes, alkoxysilanes, organoalkoxysilyl polysulfides and organomercaptoalkoxysilanes.
摘要:
A pneumatic tire having a pair of spaced apart bead components (6), a connecting carcass (3) between the bead components (6), a pair of sidewalls (5) overlying the carcass (3), and a rubber chafer (9) adjacent to each of the sidewalls (5) and positioned around at least a portion of each of the bead components (6) and intended for contacting a rigid rim of a wheel is disclosed. The chafers (9) comprise 100 parts by weight of elastomer, 20 to 60 phr of a first carbon black having an Iodine absorption value in a range of from 10 to 50 as measured by ASTM D1510 and 20 to 60 phr of a second carbon black having an Iodine absorption value in a range of from 100 to 300 g/kg as measured by ASTM D1510. The sidewalls (5) comprise 100 phr of the same elastomer used in the chafers (9), 20 to 60 phr of the same first carbon black used in the chafers (9), and 10 to 20 phr of the same second carbon black used in the chafers (9). The weight ratio of the second carbon black in the chafers (9) to the second carbon black in the sidewalls (5) is greater than 1.
摘要:
A rubber composition for use in a tire tread and a respective tread and pneumatic tire with such a tread is dieclosed. The rubber composition comprises from 20 to 90 part by weight per 100 parts by weight of rubber (phr) of a solution polymerized styrenebutadiene rubber; from 10 to 80 phr of a polybutadiene rubber, wherein from 0 to 20 weight percent of the polybutadiene rubber is a syndiotactic polybutadiene rubber comprising at least 70 percent of monomeric units in syndiotactic 1,2 configuration and the balance of the polybutadiene rubber comprises at least 90 percent of monomeric units in cis-1,4 configuration; and from 50 to 150 phr of pre-hydrophobated silica, preferably precipitated silica, wherein the pre-hydrophobated silica is hydrophobated prior to its addition to the rubber composition by treatment with at least one silane selected from the group consisting of alkylsilanes, alkoxysilanes, organoalkoxysilyl polysulfides and organomercaptoalkoxysilanes.
摘要:
A pneumatic tire having a pair of spaced apart bead components (6), a connecting carcass (3) between the bead components (6), a pair of sidewalls (5) overlying the carcass (3), and a rubber chafer (9) adjacent to each of the sidewalls (5) and positioned around at least a portion of each of the bead components (6) and intended for contacting a rigid rim of a wheel is disclosed. The chafers (9) comprise 100 parts by weight of elastomer, 20 to 60 phr of a first carbon black having an Iodine absorption value in a range of from 10 to 50 as measured by ASTM D1510 and 20 to 60 phr of a second carbon black having an Iodine absorption value in a range of from 100 to 300 g/kg as measured by ASTM D1510. The sidewalls (5) comprise 100 phr of the same elastomer used in the chafers (9), 20 to 60 phr of the same first carbon black used in the chafers (9), and 10 to 20 phr of the same second carbon black used in the chafers (9). The weight ratio of the second carbon black in the chafers (9) to the second carbon black in the sidewalls (5) is greater than 1.