Abstract:
The invention relates to a pneumatic tire having a cap/base configuration comprised of an outer tread cap rubber layer, with a tread running surface, and an underlying tread base rubber layer, where the base rubber layer contains syndiotactic polybutadiene with a diverse blend of carbon blacks.
Abstract:
The present invention is directed to a pneumatic tire comprising a carcass and an innerliner in direct contact with the carcass, the innerliner comprising a rubber composition comprising: at least one elastomer selected from the group consisting of butyl rubber, chlorinated butyl rubber, brominated butyl rubber, synthetic polyisoprene, natural rubber, styrene butadiene rubber, polybutadiene, copolymer of isobutylene and paramethylstyrene, and brominated copolymer of isobutylene and paramethylstyrene; epichlorohydrin rubber; and at least one delaminated talc having a BET surface area according to DIN 66131 of 10-40 m2/g, an average particle size (D50) of 4-8 microns, determined by laser diffraction measurement, and a lamellarity index of 3-15.
Abstract:
The present invention is directed to pneumatic tire comprising at least one component, the at least one component comprising a rubber composition comprising: at least one diene-based rubber; and from 1 to 50 phr of a particulate polyamide having a particle size of from 0.1 to 1 micron, wherein the particulate polyamide is substantially spherical and wherein the particulate polyamide has a melting temperature greater than 210° C. as measured by ISO 11357.
Abstract:
The present invention is directed to a pneumatic tire comprising at least one component, the at least one component comprising a rubber composition comprising: 100 parts by weight of at least one elastomer; from 10 to 80 parts by weight, per 100 parts by weight of elastomer (phr) of a high structure silica having a CTAB specific surface area (SCTAB) of between 40 and 525 m2/g, a BET specific surface area (SBET) of between 45 and 550 m2/g; and from 10 to 70 phr of a low structure silica having a median particle size of less than 500 nm, a specific area ranging from 15 to 25 m2/g, and a specific gravity of 2.1 to 2.3 g/cm3.
Abstract translation:本发明涉及一种包括至少一种组分的充气轮胎,所述至少一种组分包括橡胶组合物,其包含:100重量份的至少一种弹性体; 10重量份至80重量份,相对于每100重量份具有40-52m 2 / g CTAB比表面积(SCTAB)的高结构二氧化硅的弹性体(phr),BET比表面积(SBET)为 45至550平方米/克; 和10至70phr的中等颗粒尺寸小于500nm,比表面积为15至25m 2 / g,比重为2.1至2.3g / cm 3的低结构二氧化硅。
Abstract:
The present invention is directed to a method of processing a rubber composition, comprising the steps of mixing at least one diene base elastomer with at least one additive selected from the group consisting of fillers, to a final temperature of about 150 to about 160° C. in a first non-productive mix step to form a first non-productive mix; cooling the first non-productive mix to a temperature of about 60 to about 90° C.; mixing the first non-productive mix with 0.1 to 10 parts by weight, per 100 parts by weight of elastomer, of a treated short aramid fiber having a length ranging from 1 to 10 mm and having a thickness ranging from 5 to 15 microns and comprising 3 to 40 percent by weight of a peroxide radical initiator in a second non-productive mix step to a final temperature of about 150 to about 160° C. to form a second non-productive mix; and mixing the second non-productive mix with curatives in a productive mix step to form a productive mix.
Abstract:
The invention relates to a pneumatic tire having a cap/base configuration comprised of an outer tread cap rubber layer, with a tread running surface, and an underlying tread base rubber layer, where the base rubber layer contains syndiotactic polybutadiene with a diverse blend of carbon blacks.
Abstract:
The present invention is directed to a method of processing a rubber composition, comprising the steps of mixing at least one diene base elastomer with at least one additive selected from the group consisting of fillers, to a final temperature of about 150 to about 160° C. in a first non-productive mix step to form a first non-productive mix; cooling the first non-productive mix to a temperature of about 60 to about 90° C.; mixing the first non-productive mix with 0.1 to 10 parts by weight, per 100 parts by weight of elastomer, of a treated short aramid fiber having a length ranging from 1 to 10 mm and having a thickness ranging from 5 to 15 microns and comprising 3 to 40 percent by weight of a peroxide radical initiator in a second non-productive mix step to a final temperature of about 150 to about 160° C. to form a second non-productive mix; and mixing the second non-productive mix with curatives in a productive mix step to form a productive mix.
Abstract:
The present invention is directed to a pneumatic tire comprising a carcass and an innerliner in direct contact with the carcass, the innerliner comprising a rubber composition comprising: at least one elastomer selected from the group consisting of butyl rubber, chlorinated butyl rubber, brominated butyl rubber, synthetic polyisoprene, natural rubber, styrene butadiene rubber, polybutadiene, copolymer of isobutylene and paramethylstyrene, and brominated copolymer of isobutylene and paramethylstyrene; epichlorohydrin rubber; and at least one delaminated talc having a BET surface area according to DIN 66131 of 10-40 m2/g, an average particle size (D50) of 4-8 microns, determined by laser diffraction measurement, and a lamellarity index of 3-15.
Abstract:
The present invention is directed to a method for maintaining the black sidewall appearance of a tire, comprising the step of fabricating the tire with a rubber sidewall compound 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.
Abstract:
The present invention relates to a rubber composition comprising at least one rubber component, between about 50 phr and about 120 phr of a filler, wherein at least 20 phr of the filler is a high surface area carbon black. Further, the composition comprises between 10 phr and 30 phr of a phenolic resin. The present invention is further directed to a tire tread or a tire comprising such a composition.