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Benzene-free solvent type peelable pressure-sensitive adhesive and preparation method thereof

A pressure-sensitive adhesive and solvent-based technology, applied in the field of pressure-sensitive adhesives, can solve problems such as restricting the use of volatile organic compounds, increasing organic waste gas emissions, and health hazards, and achieves improved peelability, improved bonding performance, and volatile The effect of high speed

Pending Publication Date: 2021-10-26
江苏耐斯数码科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the production and use of this type of solvent-based pressure-sensitive adhesive products, these toxic substances will cause serious harm to human health through continuous volatilization. Long-term exposure will cause serious reduction of white blood cells or chronic poisoning, which may even be life-threatening.
In recent years, domestic government departments at all levels have continuously increased the monitoring of organic waste gas emissions and restricted the use of volatile organic compounds

Method used

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  • Benzene-free solvent type peelable pressure-sensitive adhesive and preparation method thereof

Examples

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preparation example Construction

[0086] A second aspect of the invention provides a method for preparing a non-p-lyl solvent type peelable pressure sensitive, comprising the steps of:

[0087] 1) Preparation of the monomer mixture: It is weighing the hard monomer, an acrylate soft monomer, a functional monomer, an inner crosslinked monomer, and a monomer mixture is obtained, and the monomer mixture is mixed with 5% concentration of sodium hydroxide solution mixed, washing the monomer, remove the polymerization agent, spare;

[0088] 2) Preparation of the kettle: It is weighed with an initiator, a non-phenorbone solvent, and a non-p-free solvent, and the monomer mixture obtained by removing the polymerization agent from 15% by weight and 10% by weight. Part of the initiator, 20% by weight of a no-phenorbone solvent and all parts of the othlebrene-free solvent mix, dissolve, and mixed into a suction;

[0089] 3) Preparation of dripping liquid: It is known to mix the remaining part of the monomer mixture, the initia...

Embodiment 1

[0098] Example 1 provides a non-p-free solvent-type peelable pressure sensitive, according to a mass, the preparation of the pressure sensitive comprises 140 ester solvents, 7 parts of the alcohol solvent, 17 parts of hard cells, acrylic acid 70 ester soft monomers, 6 functional monomers, 0.15 inner crosslinking monomers, 0.05 parts of chain transfer agents, 0.8 initiationers, 1 diplomatic agent.

[0099] The ester solvent is ethyl acetate, and the CAS number is from 141 to 78-6, the alcohol solvent is isopropyl alcohol, and the CAS number is 67-63-0.

[0100] The hard monomer is methyl acrylate which is a mixture of ethyl acrylate, octyl acrylate, and acrylate, the functional monomer being acrylic acid and acrylic-2-hydroxypropyl. Mixture, the inner crosslinked monomer is a mixture of methacrylate and N-hydroxymethyl methacrylate, 17 parts of methacrylate, 4 parts of acrylate, and 13 acrylic acid n-butyl acrylate. Octal acrylate, 4 parts of acrylic, 2 parts of acrylic acid-2-hydr...

Embodiment 2

[0114] Example 2 provides a non-p-free solvent-type peelable pressure sensitive adhesive, and the preparation of the pressure-sensitive glue is 90 parts of ester solvent, 4 of the alcohol solvent, 12 parts of hard cells, acrylic acid. Ester soft monomer, 6 functional monomers, 0.2 parts of the internal crosslinked monomer, 0.05 parts of the chain transfer agent, 0.5 primary initiators, and the diplomatic agent.

[0115] The ester solvent is ethyl acetate, and the CAS number is from 141 to 78-6, the alcohol solvent is isopropyl alcohol, and the CAS number is 67-63-0.

[0116] The hard monomer is methyl acrylate which is a mixture of ethyl acrylate, octyl acrylate, and acrylate, the functional monomer being acrylic acid and acrylic-2-hydroxypropyl. Mixture, the inner crosslinked monomer is a mixture of methacrylate and N-hydroxymethyl methacrylate, 12 parts of methyl acrylate, 5 parts of ethyl acrylate, 15 parts of acrylic acid, abut ester acrylate. 65 parts, 4 servium acrylic, 2 pa...

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Abstract

The invention provides a benzene-free solvent type peelable pressure-sensitive adhesive which is composed of the following preparation raw materials in parts by weight: 90 to 140 parts of a benzene-free main solvent, 3 to 10 parts of a benzene-free cosolvent, 8 to 20 parts of a hard monomer, 70 to 90 parts of an acrylate soft monomer, 3 to 8 parts of a functional monomer, 0.05 to 0.5 part of an internal crosslinking monomer, 0.01 to 0.5 part of a chain transfer agent, 0.3 to 0.8 part of an initiator and 0.2 to 1 part of an external crosslinking agent. The invention also provides a preparation method of the benzene-free solvent type peelable pressure-sensitive adhesive. According to the invention, no benzene-containing solvent is used, and the same performance of the benzene-containing solvent type peelable pressure-sensitive adhesive is obtained by using the chain transfer agent and controlling the preparation method; and the peelable pressure-sensitive adhesive has the advantages of peelability, favorable initial adhesion, favorable peel strength, favorable holding power, favorable coating property, high safety and environment friendliness.

Description

Technical field [0001] The present invention relates to pressure-sensitive adhesive technology, and particularly relates to a releasable pressure sensitive adhesive benzene solvent type and preparation method. Background technique [0002] Pressure-sensitive means can be pressed down with an adherend-based adhesive in the adhesive force. Currently used extensively for sealing tapes, labels, protective tape and decorative plates and other industries. With industrial development, self-adhesive labels with adhesive application market is more and more widely, increasing varieties, commonly used solvent-based pressure-sensitive adhesive, water-based and hot-melt type. Currently, solvent relatively large amount of product, solvent-based acrylic pressure-sensitive adhesive is generally used solvents are benzene, toluene, xylene and the like aromatic compounds, sometimes using chloroform, trichlorethylene halogen compounds. This class solvent-based pressure sensitive adhesive products in...

Claims

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Application Information

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IPC IPC(8): C09J133/08C09J11/06C08F220/18C08F220/14C08F220/06C08F220/20C08F220/32C08F220/58C08F2/38C08F2/06C09J7/38
CPCC09J133/068C09J11/06C08F220/1808C08F2/38C08F2/06C09J7/385C09J2203/334C09J2301/302C08F220/14C08F220/1802C08F220/1804C08F220/06C08F220/20C08F220/325C08F220/58C08K5/0091
Inventor 李冰洁李剑平
Owner 江苏耐斯数码科技股份有限公司
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