Water-based pressure-sensitive adhesive for ultralow-viscosity protection film, ultralow-viscosity protection film and preparation method thereof

A technology of protective film and pressure-sensitive adhesive, applied in pressure-sensitive films/sheets, adhesives, adhesive types, etc. Macroscopic phase separation, reduced pressure-sensitive viscosity, and good flexibility

Inactive Publication Date: 2019-02-12
DONGGUAN STAR COSM POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to provide a water-based pressure-sensitive adhesive for ultra-low viscosity protective film and its preparation method in view of the deficiencies in the prior art. The prepared water-based pressure-sensitive adhesive has both ultra-low viscosity and high flexibility, and is very Well solved the technical problems that the water-based pressure-sensitive adhesives in the prior art are difficult to reduce viscosity, have poor flexibility, and are easy to drop powder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of ultra-low viscosity protective film of the present embodiment, preparation method is as follows (all following raw materials are by weight):

[0034] Step A. Dissolve 0.3 parts of polyether sulfate emulsifier in 12 parts of demineralized water, and add monomer substances under stirring conditions: 5 parts of acrylic modified monomer SPS, 35 parts of butyl acrylate, 30 parts of isooctyl acrylate ester, 12 parts of methyl methacrylate, 0.2 part of hydroxyethyl acrylate, 0.05 part of hydroxypropyl methacrylate, 0.1 part of acrylonitrile and 0.6 part of wet adhesion promoter to obtain a pre-emulsion;

[0035] Step B, dissolving 0.2 parts of ammonium persulfate in demineralized water to prepare an initiator solution with a mass concentration of 3%, for subsequent use;

[0036] Step C, first add 16 parts of demineralized water, 0.1 part of ammonium bicarbonate and 8% of the total mass part of the pre-emulsion to the reactor, heat up to 80 ° C, then add the total mas...

Embodiment 2

[0042] A kind of ultra-low viscosity protective film of the present embodiment, preparation method is as follows (all following raw materials are by weight):

[0043] Step A. Dissolve 0.8 parts of polyether sulfate emulsifier in 17 parts of demineralized water, and add monomer substances under stirring conditions: 15 parts of acrylic modified monomer SPS, 20 parts of butyl acrylate, 45 parts of isooctyl acrylate ester, 18 parts of methyl methacrylate, 0.8 part of itaconic acid, 0.2 part of hydroxypropyl acrylate and 1.4 parts of wet adhesion promoter to obtain a pre-emulsion;

[0044] Step B, dissolving 0.3 part of potassium persulfate and 0.1 part of sodium persulfate in demineralized water to prepare an initiator solution with a mass concentration of 5% for subsequent use;

[0045]Step C, first add 20 parts of demineralized water, 0.1 part of sodium acetate, 0.1 part of disodium hydrogen phosphate and 10% of the total mass of the pre-emulsion to the reaction kettle, raise th...

Embodiment 3

[0051] A kind of ultra-low viscosity protective film of the present embodiment, preparation method is as follows (all following raw materials are by weight):

[0052] Step A. Dissolve 1 part of polyether sulfate emulsifier in 22 parts of demineralized water, and add monomer substances under stirring conditions: 25 parts of acrylic modified monomer SPS, 45 parts of butyl acrylate, 20 parts of isooctyl acrylate ester, 5 parts of methyl methacrylate, 0.3 part of itaconic acid, 0.9 part of β-CEA and 0.3 part of acrylonitrile and 0.2 part of wet state adhesion promoter to obtain a pre-emulsion;

[0053] Step B, dissolving 0.8 parts of sodium persulfate in demineralized water to prepare an initiator solution with a mass concentration of 8%, for subsequent use;

[0054] Step C, first add 28 parts of demineralized water, 0.2 parts of sodium bicarbonate, 0.1 part of ammonium bicarbonate and 6% of the total mass of the pre-emulsion to the reactor, heat up to 85°C, and then add 18% of th...

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PUM

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Abstract

The invention relates to the technical field of a water-based adhesive, in particular to a water-based pressure-sensitive adhesive for an ultralow-viscosity protection film, the ultralow-viscosity protection film and a preparation method thereof, wherein the water-based pressure-sensitive adhesive is prepared from 30 to 60 parts of softened water, 5 to 25 parts of single-end double-bond terminatedpolydimethylsiloxane, 20 to 45 parts of butyl acrylate, 20 to 45 parts of 2-ethylhexyl acrylate, 5 to 18 parts of methyl methacrylate, 0.2 to 2 parts of acrylate functional monomers, 0.2 to 2 parts of wet adhesion promoters, 0.3 to 1 part of polyether sulfate type emulsifiers and the like. Compared with the prior art, the water-based pressure-sensitive adhesive has the advantages of ultra-low viscosity and high flexibility. The technical problems of the water-based pressure-sensitive adhesive in the prior art that the low viscosity is difficult to reach, the flexibility is poor, and the powder easily falls off can be solved.

Description

technical field [0001] The invention relates to the technical field of water-based adhesives, in particular to a water-based pressure-sensitive adhesive for an ultra-low-viscosity protective film, an ultra-low-viscosity protective film and a preparation method thereof. Background technique [0002] Traditionally, solvent-based acrylic adhesives are mainly used to manufacture ultra-low-adhesive protective films with a peel force lower than 10gf / inch. The disadvantage of solvent-based acrylic glue is that it is not environmentally friendly and volatilizes a large amount of toxic solvents such as ethyl acetate and toluene. As an improvement, the prior art uses a water-based acrylate pressure-sensitive adhesive, thereby solving the environmental protection problem caused by solvent volatilization. [0003] However, it is difficult for the current water-based acrylate pressure-sensitive adhesives to achieve ultra-low viscosity. The main reason is that the polarity of the acrylat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/24C09J7/25C09J7/38C09J151/08C09J175/14C09J11/06C09J11/08C08F283/12C08F220/18C08F220/06C08F222/02C08F220/14C08F220/20C08F220/56C08F220/44C08F2/26C08G18/63
CPCC09J7/24C09J7/255C09J7/381C09J11/06C09J11/08C09J151/08C09J175/14C08F2/26C08F283/124C08G18/635C08L2205/03C09J2451/00C09J2423/046C09J2423/106C09J2427/006C09J2491/00C09J2467/006C09J2475/00C09J2301/408C09J2301/302C08L91/00C08K5/053C08K5/092C08F220/1808C08F220/1804
Inventor 马学赖淦荷
Owner DONGGUAN STAR COSM POLYMER
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