Organosilicone emulsion composition

Patent metadata

Field	Value
Publication number	US-10829599-B2
Application number	US-201816000051-A
Country	US
Kind code	B2
Filing date	Jun 5, 2018
Priority date	Jun 6, 2017
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

The present invention aims to provide an emulsion composition of an organopolysiloxane which has enhanced stability in a water-soluble solvent. The invention provides an organosilicone emulsion composition comprising
(A) 100 parts by mass of an organopolysiloxane having a viscosity of at least 500 Pa·s at 25° C.; (B) 1 to 50 parts by mass of a polyether group-containing organosiloxysilicate; (C) 1 to 50 parts by mass of an organopolysiloxane having polyoxyalkylene residues at the both terminals; (D) 1 to 50 parts by mass of a nonionic surfactant; and (E) 10 to 1,000 parts by mass of water.

First claim

The invention claimed is:

1. A mixture comprising:
(1) an organosilicone emulsion composition comprising
(A) 100 parts by mass of an organopolysiloxane having a viscosity of at least 500 Pa s at 25 degrees C.,
(B) 1 to 50 parts by mass of an organosiloxy silicate having at least one polyether group
(C) 1 to 50 parts by mass of a linear organopolysiloxane having polyoxyalkylene residues at both terminals,
(D) 1 to 50 parts by mass of a nonionic surfactant and
(E) 10 to 1,000 parts by mass of water,
and
(2) a water-soluble solvent selected from methanol, ethanol, 1-propanol, isopropyl alcohol (IPA), n-butanol, acetone, methyl ethyl ketone and N,N-dimethylformamide.

2. The mixture according to claim 1 , wherein component (C) is represented by the following general formula (VI),

wherein R 1 is, independently of each other, an unsubstituted or substituted, monovalent hydrocarbon group having 1 to 20 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or a hydroxy group, m is an integer of from 0 to 2000, and P is represented by the following general formula (VII):
—X′—(OC 2 H 4 ) a′ (OC 3 H 6 ) b′ (IC 4 H 8 ) c′ —O—Y′  (VII)

wherein X′ is a single bond or an alkylene group having 1 to 10 carbon atoms, a′ is an integer of from 1 to 100, b′ is an integer of from 0 to 50, c′ is an integer of from 0 to 30, Y′ is a hydrogen atom, an unsubstituted or substituted, monovalent hydrocarbon group having 1 to 20 carbon atoms or —COR″, and R″ is an alkyl group having 1 to 10 carbon atoms, and the parenthesized oxyethylene, oxypropylene and oxybutylene groups in the formula (VII) may be sequenced at random or form a block unit.

3. The mixture according to claim 1 or 2 , wherein component (A) is an organopolysiloxane represented by the following general formula (I):

wherein R is, independently of each other, an unsubstituted or substituted, monovalent hydrocarbon group having 1 to 20 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or a hydroxy group, and n is an integer of from 500 to 10,000.

4. The mixture according to claim 1 , wherein an organosiloxy silicate moiety in component (B) comprises SiO 4/2 units and R′ 3 SiO 1/2 units, wherein a percentage of the number of SiO 4/2 units is 25 to 75% and a percentage of the number of R′ 3 SiO 1/2 units is 23 to 75%, based on the total number of the siloxane units, and wherein the organosiloxy silicate moiety comprises at least one O 1/2 R 2 unit attached to SiO 4/2 unit;
wherein R′ is, independently of each other, an unsubstituted or substituted, monovalent hydrocarbon group having 1 to 12 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or a group represented by the general formula (II):
—X—(OC 2 H 4 ) a (OC 3 H 6 ) b (OC 4 H 8 ) c —O—Y  (II)

wherein X is a single bond or an unsubstituted or substituted, divalent hydrocarbon group having 2 to 12 carbon atoms, Y is a hydrogen atom, an unsubstituted or substituted, monovalent hydrocarbon group having 1 to 20 carbon atoms or —COR″, R″ is an alkyl group having 1 to 10 carbon atoms, a is an integer of from 1 to 50, b is an integer of from 0 to 30, c is an integer of from 0 to 30, and the parenthesized oxyethylene, oxypropylene and oxybutylene groups in the formula (II) may be sequenced at random or form a block unit,
O 1/2 R 2 unit is a hydroxy group, an alkoxy group having 1 to 6 carbon atoms or the group represented by the formula (II) with X being a single bond, and
provided that the organosiloxy silicate has at least one polyether-containing group represented by the formula (II).

5. The mixture according to claim 1 , wherein component (B) is a condensation product of an organosiloxy silicate having at least one hydroxy group bonded to a silicon atom with a polyalkylene glycol, a polyalkylene glycol alkyl ether or a polyalkylene glycol alkyl ester.

6. The mixture according to claim 5 , wherein the polyalkylene glycol, the polyalkylene glycol alkyl ether and the polyalkylene glycol alkyl ester are represented by the following formula (III):
H—(OC 2 H 4 ) a (OC 3 H 6 ) b (OC 4 H 8 ) c —O—Y  (III),

wherein Y, a, b and c are as defined above and the parenthesized oxyethylene, oxypropylene and oxybutylene groups in the formula (III) may be sequenced at random or form a block unit.

7. The mixture according to claim 6 , wherein the polyalkylene glycol alkyl ether is polyethylene glycol monoalkyl ether.

8. The mixture according to claim 1 , wherein component (B) is an addition product of an SiH group-containing organosiloxy silicate with a polyalkylene glycol having an unsaturated group.

9. The mixture according to claim 8 , wherein the polyalkylene glycol having an unsaturated group is represented by the following general formula (IV):
CH 2 ═CH—Z—(OC 2 H 4 ) a (OC 3 H 6 ) b (OC 4 H 8 ) c —O—Y  (IV)

wherein Y, a, b and c are as defined above, Z is a single bond or a divalent hydrocarbon group having 1 to 10 carbon atoms, and the parenthesized oxyethylene, oxypropylene and oxybutylene groups in the formula (IV) may be sequenced at random or form a block unit.

10. The mixture according to claim 1 , wherein the water-soluble solvent is selected from methanol, ethanol, 1-propanol, isopropyl alcohol (IPA) and n-butanol.

Assignees

• Shinetsu Chemical Co

Inventors

• Ando Yuji

Classifications

• C08L83/06

  containing silicon bound to oxygen-containing groups (C08L83/12 takes precedence) · CPC title

• C08L83/04 Primary

  Polysiloxanes · CPC title

• C08G77/38

  Polysiloxanes modified by chemical after-treatment · CPC title

• C08J3/03

  in aqueous media · CPC title

• C08G77/18

  to alkoxy or aryloxy groups · CPC title