Water-based pressure-sensitive adhesive and preparation method thereof

A pressure-sensitive adhesive, water-based technology, applied in the direction of pressure-sensitive film/sheet, adhesive, film/sheet-shaped adhesive, etc., can solve the problems of incomplete resin polymerization, environmental pollution, waste of raw materials, etc., to avoid sticking The effects of joint failure, waste reduction, and not easy degumming

Inactive Publication Date: 2020-09-01
浙江金科胶材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the technical problem that the existing pressure-sensitive adhesives used in PVC advertising stickers are solvent-based pressure-sensitive adhesives, which will cause environmental pollution
[0004] Because the first resin, the second resin, and the UV monomer are all oil-soluble substances, and the initiator selected is ammonium persulfate, which belongs to a water-based initiator. In the process of preparation, the water-based initiator and the oil-soluble resin The solubility is poor, so that under the action of the initiator ammonium persulfate, the resin can only initiate the reaction outside the resin, resulting in incomplete polymerization of the resin, resulting in more monomers that do not participate in the polymerization reaction, and eventually lead to raw material waste

Method used

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  • Water-based pressure-sensitive adhesive and preparation method thereof
  • Water-based pressure-sensitive adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] refer to figure 1 , a method for preparing a water-based pressure-sensitive adhesive, comprising the following steps: all the following substances are in parts by weight;

[0037]S1: Preparation of emulsion. Add 20 parts of deionized water into the first reaction vessel, which is an emulsification tank, and start stirring, then add 4 parts of emulsifier, the emulsifier is isooctyl phosphate, and then continue to stir until emulsification After the materials in the kettle are dissolved, add 0.5 parts of oily initiator, 40 parts of butyl acrylate, 8 parts of acrylate compounds and 11 parts of isooctyl acrylate. The oily initiator is BPO, and continue to stir until the material is milky white and emulsified liquid, spare. The acrylate compound includes hydroxyethyl acrylate and acrylic acid, and the weight ratio of the two is 1:1.

[0038] S2: Aggregation stage. Add 20 parts of deionized water into the second reaction vessel, the second reaction vessel is a reaction ke...

Embodiment 2

[0042] A method for preparing a water-based pressure-sensitive adhesive, comprising the following steps: all the following substances are in parts by weight;

[0043] S1: Preparation of emulsion. Add 20 parts of deionized water into the first reaction vessel, which is an emulsification tank, and start stirring, then add 4 parts of emulsifier, the emulsifier is isooctyl phosphate, and then continue to stir until emulsification After the materials in the kettle are dissolved, add 0.5 parts of oily initiator, 40 parts of butyl acrylate, 8 parts of acrylate compounds, 11 parts of isooctyl acrylate, 0.3 parts of magnesium aluminum silicate and 0.5 parts of cyclohexasiloxane alkane, the oily initiator is cuprous naphthalate, and the stirring is continued until the material in the emulsification tank is milky white to obtain an emulsion, which is set aside. The acrylate compound includes hydroxyethyl acrylate and acrylic acid, and the weight ratio of the two is 1:1.

[0044] S2: Ag...

Embodiment 11

[0052] The difference between Example 11 and Example 1 is that the oily initiators are naphthenates.

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Abstract

The invention relates to the technical field of adhesives, and discloses a water-based pressure-sensitive adhesive. The water-based pressure-sensitive adhesive is prepared from the following raw materials in parts by weight: 20-60 parts of butyl acrylate, 1-15 parts of an acrylate compound, 2-20 parts of 2-ethylhexyl acrylate, 1-10 parts of an emulsifying agent, 0.1-1 part of an oily initiator, 0.5-5 parts of a thickening agent, 1-5 parts of a buffering agent and 20-60 parts of water. By selecting the oily initiator, the initiator can perform initiation inside emulsion microspheres when a polymerization reaction occurs, so that the polymerization reaction of resin is relatively complete, the monomer residue is reduced, and the waste of raw materials is reduced.

Description

technical field [0001] The invention relates to the technical field of adhesives, more specifically, it relates to a water-based pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] The full name of pressure-sensitive adhesive is pressure-sensitive adhesive, also commonly known as self-adhesive, referred to as pressure-sensitive adhesive. Pressure-sensitive adhesive products include three categories: pressure-sensitive adhesive tape, pressure-sensitive adhesive label paper, and pressure-sensitive film. Pressure-sensitive adhesives can be divided into elastomer-type pressure-sensitive adhesives and resin-type pressure-sensitive adhesives according to their main components. The resins used in resin-type pressure-sensitive adhesives include polyacrylate, polyurethane, polyvinyl chloride, polyvinyl ether, etc., among which polyacrylate is the most used. According to the form, pressure-sensitive adhesives can be divided into five types: so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J11/04C09J11/06C09J7/38C09J7/24C08F220/18C08F220/10C08F4/34C08F4/50C08F4/52C08F4/00C08F6/14
CPCC08F4/00C08F4/34C08F4/50C08F4/52C08F6/14C09J11/04C09J11/06C09J133/08C09J2423/106C09J7/243C09J7/385C08F220/1804C08F220/10C08F220/1808C08L33/08C08K3/34C08K5/549
Inventor 童文来章鹏昆
Owner 浙江金科胶材股份有限公司
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