Process for the preparation of organopolysiloxanes modified with

Details Process for the preparation of organopolysiloxanes modified with Process for the preparation of organopolysiloxanes modified with

1978-01-11

1981-11-17

Briggs, Sr., Wilbert J.

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

Synthetic resins

From silicon reactant having at least one...

525479, 556442, C08G 7714, C08L 8306

Patent

active

043012680

ABSTRACT:
A method for preparation of organopolysiloxanes suitable for use as binders in hardenable compositions of polymerizable monomers, the organopolysiloxanes being modified with methacrylic esters by reacting --COH-group containing methacrylic esters with organopolysiloxanes containing --SiX groups wherein X is alkoxyl, hydroxyl or chloro and wherein the organopolysiloxanes are reacted from 0.05 to equimolar amounts of pentaerythritol trimethacrylate. The organopolysiloxanes of the present invention exhibit rapid hardening properties under curing conditions. The compounds and compositions obtained with this process are also disclosed.

REFERENCES:
patent: 3577262 (1971-05-01), Nordstrom
patent: 3577264 (1971-05-01), Nordstrom
patent: 3585065 (1971-06-01), Johnson
patent: 3668272 (1972-06-01), Sekmakas

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