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Preparation method for pressure-sensitive adhesive

A pressure-sensitive adhesive and solvent technology, applied in the direction of monocarboxylic acid ester copolymer adhesive, adhesive type, rosin adhesive, etc., can solve the problems of toxicity of adhesive and low mass loss rate of volatile matter, etc. achieve good stickiness

Active Publication Date: 2012-07-11
浙江星丰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyacrylate pressure-sensitive adhesive has good low temperature resistance, high temperature resistance, low mass loss rate of volatile matter, and no harmful gas escape characteristics. Various pressure-sensitive adhesive tapes made of it can be easily pasted on the film, And make more people conduct research, but acrylate adhesives are often added with toxic substances during the preparation process, which eventually leads to the toxicity of the adhesive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Butyl acrylate is used as acrylic soft monomer, acrylic acid is used as acrylic functional monomer, azobisisobutyronitrile is used as initiator, ethyl acetate is used as solvent, vinyl acetate is used as hard monomer, and rosin resin is used as rosin resin Resin and toluene diisocyanate are crosslinking agents;

[0031] Wherein, the mass content of each component is:

[0032] Acrylic soft monomer 35%

[0033] Acrylic functional monomer 2.5%

[0034] Hard Monomer 4%

[0035] Solvent 55%

[0036] Rosin resin 3.4%

[0037] Initiator 0.05%

[0038] Cross-linking agent 0.05%

[0039] (1) Dissolve and mix acrylic soft monomer, acrylic functional monomer, 40% of the total weight of the initiator, and 55% of the total weight of the solvent to form a mixed liquid A, and set aside;

[0040] (2) Mix the remaining initiator with the hard monomer to form a mixed liquid B;

[0041] (3) 40% of the total weight of the mixed solution A is heated up for 1 hour under the p...

Embodiment 2

[0046] Using isooctyl acrylate as acrylic soft monomer, hydroxyethyl methacrylate as acrylic functional monomer, benzoyl peroxide as initiator, butyl acetate as solvent, vinyl acetate as hard monomer, modified The permanent rosin resin is a rosin resin, and aluminum isopropoxide is a crosslinking agent;

[0047] Wherein, the mass content of each component is:

[0048] Acrylic soft monomer 40%

[0049] Acrylic functional monomer 3.5%

[0050] Hard Monomer 3%

[0051] Solvent 50%

[0052] Rosin resin 3.4%

[0053] Initiator 0.03%

[0054] Cross-linking agent 0.07%

[0055] (1) Dissolve 50% of the total weight of acrylic soft monomer, acrylic functional monomer, initiator, and 60% of the total weight of solvent into a mixed liquid A, and set aside;

[0056] (2) Mix the remaining initiator with the hard monomer to form a mixed liquid B;

[0057] (3) 40% of the total weight of the mixed solution A is heated up for 1 hour under the protection of nitrogen, and then t...

Embodiment 3

[0062] Using isooctyl acrylate as acrylic soft monomer, glycidyl methacrylate as acrylic functional monomer, azobisisobutyronitrile as initiator, mixture of ethyl acetate and butyl acetate as solvent, acrylonitrile It is a hard monomer, rosin resin is a rosin resin, and aluminum acetylacetonate is a crosslinking agent;

[0063] Wherein, the mass content of each component is:

[0064] Acrylic soft monomer 23%

[0065] Acrylic functional monomer 4.5%

[0066] Hard Monomer 4%

[0067] Solvent 66%

[0068] Rosin resin 2.4%

[0069] Initiator 0.04%

[0070] Cross-linking agent 0.06%

[0071](1) Dissolve acrylic soft monomer, acrylic functional monomer, 60% of the total weight of the initiator, and 65% of the total weight of the solvent to form a mixed liquid A, and set aside;

[0072] (2) Mix the remaining initiator with the hard monomer to form a mixed liquid B;

[0073] (3) 40% of the total weight of the mixed solution A is heated up for 1 hour under the protecti...

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Abstract

The invention relates to the field of adhesives, in particular to a preparation method for a pressure-sensitive adhesive. The preparation method for the pressure-sensitive adhesive comprises the following steps of: mixing acrylic acid soft monomer, acrylic acid functional monomer, 40-70 percent of initiator and 50-70 percent of solvent into mixed solution A; mixing the remaining initiator and hard monomer to form mixed solution B; performing heating reaction on 40 percent of mixed solution A under the protection of nitrogen gas for over 1 hour; adding the remaining mixed solution A into the reacted mixed solution A; continuously reacting for more than half an hour at the reaction temperature of 60-80 DEG C; adding the mixed solution B into the mixed solution A, then reacting for over 1 hour and keeping the reaction temperature at 80-84 DEG C; and then cooling reactants to 40 DEG C, adding the remaining solvent, abietin resin and cross-linking agent, stirring for half an hour and filtering slurry. The adhesive prepared by the invention has no volatile harmful substances, has high viscosity, and is economical, practical and more environmentally-friendly.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a preparation method of pressure-sensitive adhesives. technical background [0002] Pressure-sensitive adhesives are a type of adhesives that can be firmly bonded to an adherend without the use of solvents or heat, just by applying a certain pressure. Pressure-sensitive adhesives and their products are favored by people for their convenience and labor-saving use, and the market is growing steadily. In recent years, pressure-sensitive tapes have been widely used in vehicles, electrical appliances, construction, medical care, sanitation, adhesive labels, packaging, etc. Among them, protective adhesives and medical pressure-sensitive tapes have promising prospects. [0003] Traditional adhesives are prepared by reacting toxic chemical substances as raw materials, while polyacrylate pressure-sensitive adhesives are acrylate resins prepared by radical polymerization of monomers wit...

Claims

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Application Information

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IPC IPC(8): C09J133/08C09J133/02C09J133/14C09J131/04C09J133/20C09J193/04C09J11/06
Inventor 谢土根
Owner 浙江星丰科技有限公司
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