Preparation method of emulsion type pressure-sensitive adhesive

A pressure-sensitive adhesive, emulsion-type technology, applied in the direction of ester copolymer adhesives, adhesive types, etc., can solve the problems of poor stickiness, low cost, poor initial tack performance, and poor peel strength, and achieve particle size. Narrow diameter distribution, improved initial viscosity and good stability

Inactive Publication Date: 2015-12-23
JUSHI GRP CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Solvent-type acrylate pressure-sensitive adhesive tape or silicone resin-type pressure-sensitive adhesive tape will inevitably produce a large amount of volatilization of organic solvents during the production process, so it will cause serious pollution to the environment, and the production cost is also higher than that of emulsion-type acrylate adhesive tape
[0004] Commercially available common emulsion polymerized pressure-sensitive adhesives have the following disadvantages: when the initial adhesion and peeling performance are good, the holding viscosity will be poor; when the holding viscosity is good, the initial adhesion an

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 62 parts of butyl acrylate

[0034] 25 parts of isooctyl acrylate

[0035] 11 parts of vinyl acetate

[0036] 2 parts acrylic

[0037] 100 parts of deionized water

[0038] Dodecanethiol 0.1 parts

[0039] 0.4 parts of ammonium persulfate

[0040] Sodium bicarbonate 0.25 parts

[0041] Anionic emulsifier 1 part

[0042] 2 parts non-ionic emulsifier

[0043] Appropriate amount of ammonia water

[0044] Monomer pre-emulsification: add 40 parts of distilled water to reaction bottle A, add emulsifier DB-450.6 parts, TA300-701.2 parts; stir in a water bath at 50°C for about 30 minutes, add monomer butyl acrylate 62 parts, 25 parts of isooctyl acrylate, 11 parts of vinyl acetate, 2 parts of acrylic acid, dripping in 25 minutes, stirring for 30 minutes after dripping, to obtain pre-emulsified monomer;

[0045] Preparation of seed emulsion: add 60 parts of distilled water to reaction bottle B, add emulsifier DB-450.4 parts, TA300-700.8 parts and sodium bicarbonate 0.25...

Embodiment 2

[0048] 64 parts of butyl acrylate

[0049] 25 parts of isooctyl acrylate

[0050] 10 parts vinyl acetate

[0051] 1 part acrylic

[0052] 100 parts of deionized water

[0053] Dodecanethiol 0.1 parts

[0054] 0.4 parts of ammonium persulfate

[0055] Sodium bicarbonate 0.25

[0056] Anionic emulsifier 1 part

[0057] 2 parts non-ionic emulsifier

[0058] Appropriate amount of ammonia water

[0059] Monomer pre-emulsification: Add 40 parts of distilled water to reaction bottle A, add 50.6 parts of emulsifier DB-4, TA300-701.2 parts; stir in a water bath at 50°C for about 30 minutes, add dropwise monomer butyl acrylate 64 parts, 25 parts of isooctyl acrylate, 10 parts of vinyl acetate, 1 part of acrylic acid, dripping for 25 minutes, stirring for 30 minutes after dripping, to obtain pre-emulsified monomer;

[0060] Preparation of seed emulsion: add 60 parts of distilled water to reaction bottle B, add emulsifier DB-450.4 parts, TA300-700.8 parts and sodium bicarbonate 0...

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Abstract

A preparation method of an emulsion type pressure-sensitive adhesive comprises, by weight, 60-65 parts of a soft monomer, 20-25 parts of iso-octyl acrylate, 10-15 parts of a hard monomer, 1-3 parts of acrylic acid, 100 parts of deionized water, 0.1-0.2 parts of dodecyl mercaptan, 0.4-0.5 parts of an initiator, 0.2-0.5 parts of sodium bicarbonate, 0.8-1.2 parts of an anionic emulsifier, 1.8-2.2 parts of a nonionic emulsifier, and a proper amount of ammonia water, wherein the soft monomer is selected from one or a mixture of two of butyl acrylate and ethyl acrylate; the hard monomer is selected from one or a mixture of more of vinyl acetate, styrene and methyl methacrylate; the anionic emulsifier is one or a combination of more of CO-436, k-12 and DB-45; and the nonionic emulsifier is one or a combination of two of OP-10 and TA300-70. The preparation method adopting a seed emulsion technology makes an emulsion have good stability, narrow particle size distribution and easy control property, and the pressure-sensitive adhesive obtained in the invention improves the initial adhesion and the peel strength under large permanent adhesion.

Description

(1) Technical field [0001] The invention relates to a preparation method of an emulsion type pressure-sensitive adhesive (2) Background technology [0002] Pressure sensitive adhesives are a class of adhesives that are sensitive to pressure. Pressure-sensitive adhesives and their products are favored by people because of their labor-saving methods of use. With the continuous improvement of polymerization technology and the emphasis on environmental protection products, pressure-sensitive adhesives are developing in the direction of low pollution, energy saving, and high performance. Therefore, the emulsion pressure-sensitive adhesive with water as the solvent has aroused great interest. [0003] Solvent-type acrylate pressure-sensitive adhesive tape or silicone resin-type pressure-sensitive adhesive tape will inevitably produce a large amount of volatilization of organic solvents during the production process, so it will cause serious pollution to the environment, and the p...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F218/08C08F220/06C08F2/26C08F2/30C09J133/08
Inventor 李翠红
Owner JUSHI GRP CO
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