Method of making alcohol stable emulsions ABD microemulsions

Details Method of making alcohol stable emulsions ABD microemulsions Method of making alcohol stable emulsions ABD microemulsions

1997-09-15

1999-04-06

Dawson, Robert

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524389, C08L 8306

Patent

active

058919546

ABSTRACT:
A solution of an alcohol stable emulsion or microemulsion containing an organopolysiloxane is made by polymerizing a cyclic siloxane in an aqueous medium containing the cyclic siloxane, a nonionic surfactant, an ionic surfactant, and a catalyst, until an organopolysiloxane of desired molecular weight is obtained; adding a silicone polyether to the emulsion or microemulsion and mixing the silicone polyether and the emulsion or microemulsion to form a blend; and adding the blend of silicone polyether and emulsion or microemulsion to aqueous alcohol. It is beneficial to cool the blend to below 20.degree.-25.degree. C. before adding it to aqueous alcohol. It is also beneficial to mix the silicone polyether and the emulsion or microemulsion without application of mechanically induced shear.

REFERENCES:
patent: 5017221 (1991-05-01), LeGrow
patent: 5300286 (1994-04-01), Gee
patent: 5707613 (1998-01-01), Hill
Chemistry & Technology of Silicones, Walter Noll, Academic Press, (1968), pp. 373-376.

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