# US 12,215,227 B2 · Oil-in-water silicone emulsion composition and use thereof

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- Number: US 12,215,227 B2
- Document ID: US12215227B2
- Status: Granted
- Kind: B2
- Application number: 17/620,380
- Filed: 2020-06-12
- Published: 2022-08-11
- Granted: 2025-02-04
- Earliest claimed: 2019-06-21
- Assignees: Dow Toray Co., Ltd.
- Applicants: Dow Toray Co., Ltd.
- Inventors: Kazuhiko Kojima; Tsugio Nozoe
- Web page: https://patentgrep.com/patent/US12215227B2

## CPC

- C08L 83/04: Polysiloxanes
- C09D 5/022: {Emulsions, e.g. oil in water}
- C08G 77/06: Preparatory processes
- C08G 77/16: to hydroxy groups
- C08G 77/26: nitrogen-containing groups
- C08K 3/346: {Clay}
- C08K 3/36: Silica
- C08K 5/17: Amines; Quaternary ammonium compounds
- C08K 5/42: Sulfonic acids; Derivatives thereof
- C08K 5/5419: containing at least one Si—C bond
- C08L 71/02: Polyalkylene oxides
- C09D 5/027: {Dispersing agents (anti-settling agents C09D7/45)}
- C09D 5/028: {Pigments; Filters}
- C09D 7/43: Thickening agents
- C09D 7/45: Anti-settling agents
- C09D 7/61: inorganic
- C09D 171/02: Polyalkylene oxides
- C09D 183/04: Polysiloxanes
- C08L 2201/52: Aqueous emulsion or latex, e.g. containing polymers of a glass transition temperature (Tg) below 20°C
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

An oil-in-water type silicone emulsion composition is provided that can be uniformly coated onto a substrate and can, upon removing water content, form a cured film with low surface tackiness and excellent adhesive properties to a substrate and film strength. The oil in water type silicone emulsion composition comprises: (A) 100 parts by mass of polyorganosiloxane having at least two hydroxyl groups or hydrolyzable groups bonded to a silicon atom in one molecule, where the viscosity at 25° C. is within a range of 100,000 mPa-s to 20,000,000 mPa-s; (B) 45 to 120 parts by mass of colloidal silica (based on solid fraction); (C1) 1 to 100 parts by mass of an ionic emulsifier; and (D) 0 to 500 parts by mass of water (excluding water content in component (B), if any). Optionally, the composition further comprises (C2) a polyoxyethylene-polyoxypropylene copolymerized nonionic emulsifier. The composition can be used as a surface treating agent.

## Claims

### Claim 1

An oil-in-water silicone emulsion composition, comprising:
(A) 100 parts by mass of a polyorganosiloxane having at least two hydroxyl groups or hydrolyzable groups bonded to a silicon atom in one molecule, and having a viscosity at 25° C. of from 100,000 to 20,000,000 mPa-s;
(B) 45 to 120 parts by mass of colloidal silica, based on solid content;
(C1) 1 to 100 parts by mass of an ionic emulsifier; and
(D) 0 to 500 parts by mass of water, excluding water content in the colloidal silica;
wherein the viscosity at 25° C. of the total composition is at least 1,000 mPa·s.

### Claim 2 (depends on 1)

The oil-in-water silicone emulsion composition according to claim 1, further comprising: (C2) 0.1 to 50 parts by mass of a polyoxyethylene-polyoxypropylene copolymerized nonionic emulsifier.

### Claim 3 (depends on 1)

The oil-in-water silicone emulsion composition according to claim 1, further comprising: (E) a thickening agent.

### Claim 4 (depends on 3)

The oil-in-water silicone emulsion composition according to claim 3, wherein component (E) is one or more types selected from the group consisting of (E1) thickening agents containing a clay mineral, and (E2) thickening agents containing a water-soluble organic polymer.

### Claim 5 (depends on 1)

The oil-in-water silicone emulsion composition according to claim 1, further comprising: (F) 0.1 to 50 parts by mass of a partially hydrolyzed condensation product of an alkoxysilane or alkoxyalkoxysilane, expressed by R1aSiX4-a where R1 is a unsubstituted monovalent hydrocarbon group or a substituted monovalent hydrocarbon group, X is an alkoxy group or an alkoxyalkoxy group, and a is 0, 1 or 2.

### Claim 6 (depends on 1)

The oil-in-water silicone emulsion composition according to claim 1, further comprising: (G) an amine compound.

### Claim 7 (depends on 1)

The oil-in-water silicone emulsion composition according to claim 1, wherein the average primary particle size is 50 to 600 nm.

### Claim 8 (depends on 1)

The oil-in-water silicone emulsion composition according to claim 1, wherein component (A) is obtained from (a) a polyorganosiloxane having at least two hydroxyl groups or hydrolyzable groups bonded to a silicon atom and having a viscosity lower than component (A) serving as a precursor of component (A), or (b) a polyorganosiloxane obtained by emulsion polymerizing an organic silicon compound containing an aminoxy group having an average of two aminoxy groups bonded to a silicon atom in one molecule, in the presence of component (C1) and optionally (C2) 0.1 to 50 parts by mass of a polyoxyethylene-polyoxypropylene copolymerized nonionic emulsifier.

### Claim 9 (depends on 1)

A surface treatment agent, comprising the oil-in-water silicone emulsion composition according to claim 1.

### Claim 10 (depends on 1)

A surface treatment method, comprising performing surface treatment using the oil-in-water silicone emulsion composition according to claim 1.

### Claim 11 (depends on 1)

A substrate that has been surface treated with the oil-in-water silicone emulsion composition according to claim 1.