Polymerization with organo sodium catalyst dissolved in hexameth

Details Polymerization with organo sodium catalyst dissolved in hexameth Polymerization with organo sodium catalyst dissolved in hexameth

1975-07-11

1976-05-04

Hamrock, William F.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526174, 526175, 526335, 526339, 526340, C08F 446, C08F 448

Patent

active

039547000

ABSTRACT:
Shortcomings in the use of metallic sodium as a catalyst for the polymerization of dienes are overcome by carrying the polymerization out in a hydrocarbon solvent with organosodium as the catalyst, using a chelating amide such as hexamethylphosphorotriamide.

REFERENCES:
patent: 3207742 (1965-09-01), Van de Castle
patent: 3217050 (1965-10-01), Schriesheim et al.
patent: 3288872 (1966-11-01), House
patent: 3331821 (1967-07-01), Stroble
patent: 3647803 (1972-03-01), Schlott et al.
patent: 3776893 (1973-12-01), Naylor et al.

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