Claims
- 1. A process for preparing a silicone emulsion composition comprising the steps of:
- emulsifying:
- 100 parts by weight of Component (A), at least one polymer selected from an organovinylpolysiloxane represented by Formula (I) shown below and an organovinylpolysiloxane represented by Formula (II) shown below:
- Formula (I): ##STR18## wherein R.sup.1 may be the same or different and represents a monovalent hydrocarbon group containing no aliphatic unsaturated bond; and a represents an integer such that said polymer represented by Formula (I) has viscosity of from 25 to 95 cSt at 25.degree. C.;
- Formula (II): ##STR19## wherein R.sup.1 may be the same or different and have the same definition as in Formula (I); and b and c each represent an integer such that from 1.0 to 10 mol % of all organic groups is comprised of vinyl groups and said polymer represented by Formula (II) has a viscosity of from 30 to 5,000 cSt at 25.degree. C.;
- from 1 to 50 parts by weight of Component (B), an organohydrogenpolysiloxane represented by Formula (III) shown below and having in its molecule at least 3 hydrogen atoms bonded to silicon atoms:
- Formula (III): ##STR20## wherein R.sup.1 may be the same or different and have the same definition as in Formula (I); R.sup.2 may be the same or different and represents a hydrogen atom or a monovalent hydrocarbon group; d and e each represent an integer such that from 10 to 47.5 mol % of all the monovalent atoms and groups bonded to silicon atoms in said polymer is comprised of hydrogen atoms and said polymer has a viscosity of from 5 to 200 cSt at 25.degree. C., provided that e represents an integer of 1 or more; said Component (E) water; and
- from 1 to 10 parts by weight of Component (D), a nonionic emulsifying agent having an average HLB of from 10 to 20, pH of 6.5 or less and an ionic conductivity of 30 .mu..OMEGA..sup.-1 cm.sup.-1 or less, to obtain a first emulsion composition;
- emulsifying from 0.5 parts to 5 parts by weight of Component (C) a platinum catalyst in a liquid state having a viscosity of 10 cSt or less at 25.degree. C. and from 0.5 to 5 parts by weight of said Component (D) nonionic emulsifying agent to obtain a second emulsion composition; and
- mixing said first and second emulsion compositions.
- 2. The process according to claim 1, wherein;
- 100 parts parts by weight of said Component (A) organovinylpolysiloxane;
- from 1 to 50 parts by weight of said Component (B) organohydrogenpolysiloxane;
- said Component (E) water; and
- from 1 to 10 parts by weight of said Component (D) nonionic emulsifying agent are used to prepare the first emulsion composition; and
- from 0.5 part to 5 parts by weight of said Component (C) platinum catalyst and from 0.5 to 5 parts by weight of said Component (D) nonionic are used to prepare the second emulsion composition.
Priority Claims (1)
Number |
Date |
Country |
Kind |
62-98894 |
Apr 1987 |
JPX |
|
Parent Case Info
This is a division of application Ser. No. 07/184,026, filed on Apr. 20, 1988.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
4467068 |
Maruyama et al. |
Aug 1984 |
|
4656221 |
Kurita et al. |
Apr 1987 |
|
4757106 |
Mayer et al. |
Jul 1988 |
|
4764576 |
Ogawa et al. |
Aug 1988 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
184026 |
Apr 1988 |
|