Difunctional polymeric dienes

Details Difunctional polymeric dienes Difunctional polymeric dienes

1970-07-01

1977-07-05

Evans, Joseph E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 775AP, 260515P, 260537R, 260609R, 260618R, 260635K, 260650R, 260654R, 260665R, 260635R, C07C15400, C07C 5115, C07C 2000, C07C 3118

Patent

active

040340007

ABSTRACT:
This invention relates to a method of making polymeric materials having isocyanate reactive groups by polymerizing conjugated diolefins and other olefins with a lithium catalyst in the presence of an ether consisting of diethyl ether, dimethoxy ethane and tetrahydrofuran, then reacting the lithium polymeric adduct with a functionality imparting compound such as carbon dioxide, ethylene oxide, propylene oxide, aldehydes, ketones and carbon disulfide.

REFERENCES:
patent: 2773092 (1956-12-01), Carley et al.
patent: 2816916 (1957-12-01), Frank et al.
patent: 2966526 (1960-12-01), Hansley et al.
patent: 3055952 (1962-09-01), Goldberg

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