Coupling agent

Details Coupling agent Coupling agent

1978-08-17

1980-01-22

Lieberman, Allan

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

526 19, 526 20, 526 21, 526 29, 526 55, 525333, 525334, 525342, 525385, C08L 4304

Patent

active

041850424

ABSTRACT:
Lithium metal-terminated polymers of one or more conjugated dienes and of one or more monoalkenyl arenes are coupled by reaction with a coupling agent of the general formula ##STR1## where the R groups are optionally substituted hydrocarbyl groups, R.sub.1 is hydrogen, R or OR, and R.sub.2 is an optionally substituted alkylene group which may contain one or more oxygen atoms.

REFERENCES:
patent: 3244664 (1966-04-01), Zelinski et al.
patent: 3468972 (1969-09-01), Hsieh
patent: 3470226 (1969-09-01), Plumb et al.
patent: 3692874 (1972-09-01), Farrar et al.
patent: 3725369 (1973-04-01), Halasa et al.
patent: 3840616 (1974-10-01), Clark et al.
patent: 3880954 (1975-04-01), Kable et al.

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