Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1986-09-29
1989-06-27
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525232, 525237, 525313, 525314, 525914, 526 65, 526 73, 526173, 526178, 526179, 526335, 526337, 526340, 428492, 428521, 152450, C08F 3604, C08L 906, B60C 500
Patent
active
048431206
ABSTRACT:
It has been determined that certain rubbery polymers having multiple glass transition temperatures can be utilized in making tires which have improved rolling resistance, improved wet skid resistance, and outstanding tread wear. These rubbery polymers are derived from at least one conjugated diolefin monomer, have a first glass transition temperature which is between -110.degree. C. and -20.degree. C. and have a second glass transition temperature which is between -50.degree. C. and 0.degree. C. These rubber polymers can be homopolymers of conjugated diolefin monomers, copolymers of more than one conjugated diolefin monomer, or copolymers derived from at least one conjugated diolefin monomer and at least one vinyl aromatic monomer.
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Multiple Glass Transitions of Block Polymers, Angelo et al., Polymer 6(3), 141-56 (1965).
Balogh George F.
Cox Joel L.
Gross Bill B.
Halasa Adel F.
Rockhill Alvin T.
Schofer Joseph L.
Teskin F. M.
The Goodyear Tire & Rubber Company
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