Preparation of acrylic ester copolymer emulsion for pressure-sensitive adhesive

A pressure-sensitive adhesive, acrylate technology, applied in the direction of ester copolymer adhesives, adhesive types, etc., can solve the problem of not being able to simultaneously achieve initial tack, peeling and holding properties, initial tack and peeling properties. It can reduce the amount of residual glue, improve the initial adhesion, and improve the adhesion.
CN101412783AActive Publication Date: 2009-04-22HEBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HEBEI UNIV OF TECH
Publication Date
2009-04-22

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Abstract

The invention relates to a method for preparing an acrylate polymer emulsion used for a pressure sensitive adhesive, which belongs to an adhesive based on acrylate polymer. The method for preparing the acrylate polymer emulsion used for the pressure sensitive adhesive comprises the following steps: (1) preparation of a seed emulsion; (2) pre-emulsification of shell layer monomers; and (3) gradient feeding of a shell layer. The method adopts the seed emulsion polymerization technology to drip a hard monomer, namely methyl methacrylate (MMA) into the shell layer, so that the concentration is subjected to discontinuous change and the organic-inorganic acrylate polymer emulsion provided with an obvious core-shell structure is prepared, wherein nano silicon dioxide is taken as a core and a copolymer of acrylic ester and acrylic monomers is taken as the shell layer; and the hard monomer of the shell layer is subjected to concentration gradient change. The acrylate polymer emulsion can be used as the pressure sensitive adhesive after drying and film forming; the prepared pressure sensitive adhesive has the advantages of high continuous viscous force and reduction of the residual gum content under the condition of gum peeling; and the initial adhesion and the peeling strength can be improved when the continuous viscous force is larger.
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Description

technical field

[0001] The technical solution of the present invention relates to an adhesive based on an acrylate copolymer, in particular to a method for preparing an acrylate copolymer emulsion for a pressure-sensitive adhesive. Background technique

[0002] Pressure-sensitive adhesives can be prepared by processes such as emulsion polymerization, solution polymerization, heating and melting, and UV curing. However, in recent years, with people's emphasis on environmental protection, safety, energy saving, etc. and the continuous expansion of the application of pressure-sensitive adhesives, pressure-sensitive adhesives have been promoted to develop in the direction of low pollution, energy saving, high performance and multi-functionality, especially in developed countries. After putting forward pollution-free, pollution-free, resource-saving and energy-saving as the prerequisites for developing the adhesive industry, water-based emulsion pressure-sensitive adhesives have ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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