Process for the continuous manufacture of siloxane polymers

Details Process for the continuous manufacture of siloxane polymers Process for the continuous manufacture of siloxane polymers

1979-06-18

1981-02-10

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

528 25, 528 37, 556467, C08G 7706

Patent

active

042502900

ABSTRACT:
A process for the continuous manufacture of diorganopolysiloxane polymers. The polymerization reaction takes place in a static mixer wherein dimethyl cyclic polysiloxane monomers are treated with a potassium silanolate catalyst. Efficiency of the static mixer is maintained by the early introduction of water chain-stopper which effectively provides for a plug flow condition within the polymerizer section. Preparation of other polysiloxane fluids utilizing triorganosiloxy chainstopper is also disclosed.

REFERENCES:
patent: 3382205 (1968-05-01), Beers
patent: 3779987 (1973-12-01), Razzano
patent: 3903047 (1975-09-01), Ashby
patent: 3978104 (1976-08-01), Razzano
patent: 4128568 (1978-12-01), Buchner et al.

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