Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1986-12-31
1989-06-13
Briggs, Sr., Wilbert J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525300, 525271, C08F27902
Patent
active
048394319
ABSTRACT:
Elastomeric homopolymers and copolymers comprising at least one active group containing an alkali metal atom are chemically treated to incorporate at least one conjugated diolefin linkage. The chemical treatment consists of reacting the living polymers with 2,3-ethylenically unsaturated aldehyde or ketone and then converting the reaction product thus obtained to the corresponding alcohol and dehydrating the alcohol to produce the conjugated diolefin linkage. The chemically treated elastomeric homopolymers and copolymers are useful in any of the applications known in the prior art for the corresponding untreated homopolymers and copolymers. Moreover, the chemically treated elastomeric polymers may be reacted with an unsaturated monomeric dienophile through a 4+2 Diels Alder addition reaction and a polymer then grafted onto the chemically treated elastomeric polymer or the chemically treated elastomeric polymer may be reacted directly with another (different) polymer containing at least one dienophile group. When the polymer grafted onto or reacted with the chemically treated elastomeric polymer is an unsaturated polyester or a polyvinylester the resulting product is advantageously used as a modifier in thermosetting resin compositions. The resulting thermosetting resin composition as well as the molded products produced therefrom, will, in general, exhibit improved properties.
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Briggs Sr. Wilbert J.
Shell Oil Company
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