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US 2009/0151838 A1Published application
Tire containing an internal cord reinforced rubber component
OwnerErik Paul Sandstrom, Paul Harry Sandstrom +2inventors
InventorsErik Paul Sandstrom, Paul Harry Sandstrom, Jeremy Elton Miracle, Warren James Busch
Life of this patent
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Abstract
This invention relates to a tire having an internal component comprised of a cord reinforced polyisoprene-based rubber composition containing silica reinforcement. Such cord reinforced rubber internal tire component may be, for example, at least one of a tire carcass ply, circumferential overlay ply and circumferential belt ply underlying its tread.
Claims20
A tire having at least one internal cord reinforced rubber component comprised of:
- (A) a rubber composition comprised of, based upon parts by weight per 100 parts by weight rubber (phr):
- (1) cis 1,4-polyisoprene rubber, and
- (2) about 20 to about 60 phr of reinforcing filler comprised of:
- (a) precipitated silica, and
- (b) from zero to about 5 phr of rubber reinforcing carbon black;
- (3) coupling agent for said silica having a moiety reactive with hydroxyl groups on said precipitated silica and another different moiety interactive with said polyisoprene rubber,
- (4) resinous reaction product of a methylene donor and methylene acceptor compound formed in situ within the rubber composition,
- wherein said methylene donor is comprised of hexamethoxymethylmelamine, and
- wherein said methylene acceptor is comprised of at least one of unmodified phenol novolac resin and modified phenol novolac resin, resorcinol and mixtures thereof;
- (5) cobalt salt comprised of at least one of cobalt naphthenate, and cobalt neodecanoate present in an amount of from about 0.2 to about 5 phr where said cord is comprised of at least one wire filament and from zero to about 5 phr where said cord is comprised of at least one non-wire filament, and
- (6) cure package, exclusive of organoperoxide, comprised of sulfur, sulfenamide primary sulfur cure accelerator, zinc dimethyldithiocarbamate secondary accelerator and metaphenylene bismaleimide cure additive;
- (B) at least one cord and encapsulated by said polyisoprene rubber composition, wherein said cords are individually comprised of at least one filament, wherein said filament comprised of at least one of
- (1) wire filament comprised of at least one of steel filament, brass coated steel filament and bronze coated steel filament, or
- (2) non-wire filament comprised of at least one of nylon filament, aramid filament, polyester filament, rayon filament and glass filament.
11 more elements
Dependencies are inferred from the claim text.