Method of manufacturing silicone emulsions

Details Method of manufacturing silicone emulsions Method of manufacturing silicone emulsions

1992-07-14

1994-04-12

Marquis, Melvyn I.

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...

524837, 252312, 252314, 10628713, 10628714, 514941, C08K 507, B01J 1300

Patent

active

053026586

ABSTRACT:
A method is described for making an emulsion in which a mixture is formed containing a polysiloxane and a primary nonionic surfactant having an HLB value of 10 to 19. There is added to the mixture a first portion of surfactant free water gradually in a series of separate incremental steps. This is followed by the addition to the mixture of a secondary nonionic surfactant having an HLB value of 1.8-15. The mixture is stirred until the particle size of the polysiloxane in the mixture is in the range of 1-100 microns. A second portion of water is added to the mixture in an amount sufficient to provide a total content of water in the product of 25-65 percent by weight.

REFERENCES:
patent: 4788001 (1988-11-01), Narula
patent: 4874547 (1989-10-01), Narula

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