Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1990-02-20
1990-12-11
Nielsen, Earl A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
549512, 5253592, 528393, C08G 5902, C08G 5922, C08C 1906, C08C 1940
Patent
active
049772201
ABSTRACT:
Epoxy end-capped oligomers of 1,3-diolefin compounds of Formula I ##STR1## These oligomers are formed by: (a) reacting a 1,3-diolefin compound having 4 to 12 carbon atoms per molecule with a difunctional initiator comprising anionic reactive sites to form an intermediate living oligomer comprising two anionic end groups; and
(b) reacting the intermediate living oligomer with a halohydrin compound to epoxidize the two anionic end groups and form the desired oligomer.
The oligomers are subsequently reacted with an epoxidizing agent to form a polymer having epoxy-derived linkages at regular intervals along the chain of the polymer.
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Dougherty Thomas K.
Elias William E.
Oldham Susan L.
Denson-Low W. K.
Hughes Aircraft Company
Krass Frederick
Lachman Mary E.
Nielsen Earl A.
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