Production method for organopolysiloxane emulsion composition

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United States of America Patent

PATENT NO 10870734
APP PUB NO 20180251607A1
SERIAL NO

15757521

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Abstract

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A production method for an organopolysiloxane emulsion composition, wherein (I) an emulsion composition is prepared from an organopolysiloxane (A) that is represented by formula (1) and that has an octamethylcyclotetrasiloxane content of 1,000 ppm or less

description='In-line Formulae' end='lead'HO(R12SiO)nH  (1),description='In-line Formulae' end='tail'

(wherein R1 is H or a monovalent hydrocarbon group and n is a number that makes the viscosity, at 25° C., of the organopolysiloxane 200 mm2/s or more but less than 2,000 mm2/s), a surfactant (B) that is represented by formula (2) and that has an alkyl naphthalene skeleton

description='In-line Formulae' end='lead'R2a—C10H(7-a)—SO3M  (2),description='In-line Formulae' end='tail'

(wherein R2 is an alkyl group, M is H+, an alkali metal ion, an alkali earth metal ion, NH4+, or a tertiary NH4+, and m is 1-3), and water (C-1), and wherein (II) water (C-2) is added as necessary and then emulsion polymerization is performed in the presence of an acid catalyst (D).

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Patent Owner(s)

  • SHIN-ETSU CHEMICAL CO. LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Abe, Takuya Annaka, JP 71 259
Kobayashi, Akihiro Annaka, JP 119 786
Takada, Yuko Annaka, JP 25 210

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