Process for preparing polysiloxane-containing resin

Details Process for preparing polysiloxane-containing resin Process for preparing polysiloxane-containing resin

1990-05-11

1992-01-07

Marquis, Melvyn I.

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

Synthetic resins

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

526279, 528 25, 528 26, 528 32, 524755, 524761, 524765, 524770, 524773, 524858, C08F28312

Patent

active

050793128

ABSTRACT:
The invention provides a process for preparing a polysiloxane-containing resin which comprises copolymerizing a polysiloxane-type macromonomer with a vinyl monomer, characterized in that the polysiloxane-type macromonomer is one prepared by reacting about 70 to about 99.999 mole % of a compound (A) represented by the formula ##STR1## wherein R.sub.1 represents aliphatic hydrocarbon group having 1 to 8 carbon atoms or phenyl group, and R.sub.2, R.sub.3 and R.sub.4 each represent alkoxyl group having 1 to 4 carbon atoms or hydroxyl group with about 30 to about 0.001 mole % of a compound (B) represented by the formula ##STR2## wherein R.sub.5 represents hydrogen atom or methyl group, R.sub.6, R.sub.7 and R.sub.8 each represent hydroxyl group, alkoxyl group having 1 to 4 carbon atoms or aliphatic hydrocarbon group having 1 to 8 carbon atoms with the proviso that R.sub.6, R.sub.7 and R.sub.8 can not be aliphatic hydrocarbon groups having 1 to 8 carbon atoms at the same time, and n is an integer of 1 to 6, the polysiloxane-type macromonomer having at least two free functional groups selected from hydroxyl groups and alkoxyl groups per molecule, and the macromonomer having a number-average molecular weight of about 400 to about 100,000.

REFERENCES:
patent: 2486162 (1949-10-01), Hyde
patent: 4123472 (1978-10-01), Getson et al.
patent: 4413104 (1983-10-01), Deubzer et al.
patent: 4618644 (1986-10-01), Liu
Noll, Walter, Chemistry and Technology of Silicones, Academic Press, New York, 1968, pp. 192-193.

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