摘要:
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: 100 parts by weight of at least one elastomer; and from 25 to 100 parts by weight, per 100 parts by weight of elastomer (phr) of a polyamide having a melting temperature of less than 160° C.; wherein the elastomer exists as a continuous phase and the polyamide is dispersed as a discontinuous phase in the elastomeric continuous phase, and the innerliner is co-vulcanized with the carcass.
摘要:
This invention relates to a dual phase rubber composition and pneumatic tire with a rubber sidewall thereof, namely a dual phased non-black colored rubber composition composed of a first pre-formed elastomer phase comprised of butyl-type rubber and EPDM rubber containing a dispersion therein of reinforcing filler comprised of a particulate amorphous precipitated silica and a second pre-formed elastomer phase comprised of a nanocomposite of natural rubber containing a dispersion therein of exfoliated clay platelets. Said exfoliated clay platelets may be substantially oriented within the tire sidewall in a parallel direction to each and may also be substantially oriented in an annular direction about the axis of the tire. The tire sidewall rubber composition may contain at least one additional elastomer which may be included in either or both of said elastomer phases. Such tire sidewall rubber composition may contain a non-black colorant pigment, such as for example a white colored titanium dioxide pigment. The dual phased tire sidewall rubber composition is prepared by a phase mixing process comprised of pre-blending said butyl-type rubber and EPDM rubber together with said precipitated silica reinforcing filler to form a pre-mix thereof, and thereafter mixing therewith said nanocomposite as a pre-formed blend of natural rubber and exfoliated clay platelets.
摘要:
A multi-layered veneer for a tire sidewall is disclosed wherein one or more layers of the veneer include at least one pigment to provide a desired visual effect for the tire sidewall. In one embodiment, the multi-layered veneer includes a tie layer and a first thermoplastic layer bonded to the tie layer. The tie layer is capable of bonding the veneer to a sidewall compound of a tire sidewall. The first thermoplastic layer includes a thermoplastic material and the tie layer includes no less than about 80% by weight of a synthetic polymer chosen from EPDM, EPR, polyethylene, or combinations thereof. The synthetic polymers have a Mooney Viscosity (ML 1+4 at 125° C.) from about 5 to about 40, and the EPDM and EPR have an ethylene content of about 70% by weight to about 99% by weight of the polymer. One or more pigments are dispersed in the tie layer and/or the first thermoplastic layer so as to provide the visual effect.
摘要:
A pneumatic tire having a component comprising: at least one rubber selected from polybutadiene rubber, styrene-butadiene rubber, synthetic polyisoprene rubber, and natural rubber; and from 1 to 30 parts by weight, per 100 parts by weight of rubber, of a terpolymer of: ethylene, an α-olefin, and a non-conjugated diene; the terpolymer having an ethylene content of greater than 80 percent by weight and a Mooney viscosity (ML 1+4 at 125° C.) of from 5 to 25 as measured by ASTM D-1646.
摘要:
This invention relates to preparation of rubber compositions comprised of EPDM and conjugated diene-based elastomer, particularly including cis 1,4-polyisoprene rubber, and particularly natural cis 1,4-polyisoprene rubber, blends and pneumatic rubber tire with an outer, visible sidewall layer of a rubber composition comprised of such rubber composition. For such preparation, a combination of at least two diverse EPDM elastomers is used together with a phase mixing process comprised of sequential phase mixing or parallel phase mixing in the sense of reinforcement filler and sulfur curatives.
摘要:
The invention relates to a tire having a rubber tread of a circumferentially zoned tread including stratified lateral tread zones. The tread zones are comprised of three circumferential load bearing zones, with each zone containing a portion of the running surface of the tread, comprised of an intermedial zone positioned between and two stratified lateral tread zones. The intermedial and stratified lateral zones are comprised of rubber compositions having differentiated rebound physical properties. The intermedial rubber zone, or layer, overlays a tread base rubber layer and underlies the lateral tread layer zones. The lateral tread zones are stratified in a sense of being separated from each other and also separated from the from the tread base rubber layer by the intermedial rubber layer. The stratified lateral tread zones are peripheral tread zones, or layers.
摘要:
The invention relates to preparation and use of a silica reinforced rubber composition. Such rubber composition may be used, for example, for a truck tire tread expected to be exposed to heavy load duty.
摘要:
The invention relates to a pneumatic tire with a component containing syndiotactic polybutadiene. The invention particularly relates to a tire with a tread configured with an outer cap rubber layer and an internal underlying rubber layer where the underlying rubber layer is comprised of such syndiotactic polybutadiene-containing rubber composition or a tire with a sidewall apex of such syndiotactic polybutadiene-containing rubber composition.
摘要:
The invention relates to a tire having a component composed of a composite of rubber chafer and outer sidewall layer components comprised of rubber compositions containing the same or different specialized cis 1,4-polybutadiene elastomers.
摘要:
The invention relates to treatment of a pre-hydrophobated precipitated silica in situ within a rubber composition. The invention relates to preparation of treated precipitated silica by treatment of pre-hydrophobated precipitated silica in situ within a rubber composition with a bis(3-trialkoxysilylalkyl) polysulfide. The invention further comprises the resultant rubber composition and a tire having a component thereof.