The amino silicone fluid - micro emulsion method of preparation null of the MQ resin

摘要

PURPOSE: To obtain the subject microemulsion being transparent or translucent and useful as a personal care product by adding a surfactant having a high phase inversion temperature to a microemulsifiable silicone, adding water to the mixture at that temperature, and quickly adding water to the mixture after acidification. ;CONSTITUTION: The objective emulsion is obtained by adding (B) a surfactant having a phase inversion temperature in the range of about 45 to about 95°C (desirably, about 55 to about 95°C) to (A) a microemulsifiable silicone represented by formula I {wherein R is a 1-6C hydrocarbon group; Q is the formula: -R¹HZ [wherein R¹ is H or a divalent connecting group; Z is an amino-containing polar group such as of formula II or NX₂ (wherein X is H or a 1-12C alkyl; (z) is 1 or greater; and zz is 0 or greater); (a) is 0 to about 2; (b) and (c) are each about 1 to about 3; a+b≤3; (x) is 5-2,000; (y) is 2-10,000; and M is an end stop group of the silicone]}, heating the resulting mixture to about 45 to 95°C, adding water to the mixture, adding an acid (desirably, acetic acid or the like), to it, and further adding water. It is desirable that the amino content of the silicone is about 0.10 to about 10 meq/g.;COPYRIGHT: (C)1996,JPO