# US 2014/0360405 A1 · Water-in-oil type emulsion adhesive

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- Number: US 2014/0360405 A1
- Document ID: US20140360405A1
- Status: Published application
- Kind: A1
- Application number: 14/300,756
- Filed: 2014-06-10
- Published: 2014-12-11
- Earliest claimed: 2013-06-10
- Assignees: Riso Kagaku Corporation
- Applicants: Riso Kagaku Corporation
- Inventors: Akiko HAYASHI; Yuki URANO; Kokoro KINOE; Hiroyuki OGAWA
- Web page: https://patentgrep.com/patent/US20140360405A1

## CPC

- C09J 129/04: Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
- C09J 5/00: Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J 103/00: Adhesives based on starch, amylose or amylopectin or on their derivatives or degradation products
- C09J 139/06: Homopolymers or copolymers of N-vinyl-pyrrolidones
- C08L 2201/54: Aqueous solutions or dispersions
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

Provided is a water-in-oil type emulsion adhesive, which is excellent in open shelf stability and thus a coating is difficult to be formed inside of a machine, which is excellent in storage stability, and which can be rapidly attached with low energy. The water-in-oil type emulsion adhesive includes an oil phase and an aqueous phase, wherein the oil phase contains at least an organic solvent and an emulsifier, the aqueous phase contains at least water and a polymer compound, and the aqueous phase has a particle diameter of from 1 to 100 μm by a volume-based average diameter.

## Claims

### Claim 1

A water-in-oil type emulsion adhesive including an oil phase and an aqueous phase, wherein the oil phase contains at least an organic solvent and an emulsifier, the aqueous phase contains at least water and a polymer compound, and the aqueous phase has a particle diameter of from 1 to 100 μm by a volume-based average diameter.

### Claim 2 (depends on 1)

The water-in-oil type emulsion adhesive according to claim 1, wherein the aqueous phase has a volume-based average diameter of from 10 to 30 μm.

### Claim 3 (depends on 1)

The water-in-oil type emulsion adhesive according to claim 1, wherein the aqueous phase contains water content in an amount of from 75 to 85% by mass.

### Claim 4 (depends on 2)

The water-in-oil type emulsion adhesive according to claim 2, wherein the aqueous phase contains water content in an amount of from 75 to 85% by mass.