Neutralization of catalyst in polymerization of polydiorganosilo

Details Neutralization of catalyst in polymerization of polydiorganosilo Neutralization of catalyst in polymerization of polydiorganosilo

1986-10-27

1988-01-12

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

528 33, 528 37, 556462, 556467, C08G 7706

Patent

active

047192763

ABSTRACT:
A high molecular weight polydiorganosiloxane, produced by the alkaline catalysis of dialkylcyclotetrasiloxane, has a lower --SiOH content when the catalyst is neutralized with a composition of the formula R'.sub.3 SiOC(O)R" where R' is a hydrocarbon radical of from 1 to 6 carbon atoms inclusive and R" is a hydrocarbon radical of from 1 to 8 carbon atoms inclusive.

REFERENCES:
patent: 4177200 (1979-12-01), Razzano et al.
patent: 4341888 (1982-07-01), Razzano
patent: 4439592 (1984-03-01), Maass et al.
patent: 4551515 (1985-11-01), Herberg et al.
patent: 4609749 (1986-09-01), Kotzsch et al.

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