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Polyacrylic resin with side-chain modification of hybrid epoxy acrylate and synthesis method

A technology of epoxy acrylate and polyacrylic resin, which is applied in the field of photocuring hybrid epoxy acrylate side chain modified polyacrylic resin and its synthesis, can solve the problem of obtaining high hardness and mechanical strength resin, gel, Problems such as limiting the amount of modified epoxy resin added

Active Publication Date: 2019-03-26
湖南恒旺新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] CN107236418A, CN106220792A disclose a kind of preparation method of epoxy resin modified water-based acrylic resin, mainly used in water-based paint, but, its one-pot preparation method has limited the addition of modified epoxy resin, and too much The addition of epoxy resin will lead to gel in the preparation process, therefore, it is difficult to obtain a resin with high hardness and mechanical strength
[0010] In summary, there are many technical problems such as performance, economy and preparation process control in the various modification methods of the existing acrylic resin or epoxy acrylic resin

Method used

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  • Polyacrylic resin with side-chain modification of hybrid epoxy acrylate and synthesis method
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  • Polyacrylic resin with side-chain modification of hybrid epoxy acrylate and synthesis method

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Effect test

Embodiment 1～4

[0101] Hybrid epoxy acrylate side chain modified polyacrylic resin Examples 1-4 Raw material components and ratios are shown in Table 3:

[0102] Table 3 Raw material components and ratios of hybrid epoxy acrylate side chain modified polyacrylic resin Examples 1-4

[0103]

[0104] Note: "-" in the table means not added.

Embodiment 1

[0106] According to the parts by weight of the raw materials described in Table 3 Hybrid Epoxy Acrylate Side Chain Modified Polyacrylic Resin Example 1, carboxylated polyacrylate 1 and hybrid epoxy acrylate 1 were mixed, and added during heating Basic catalyst and polymerization inhibitor, at 100°C, keep warm for 4 hours until the acid value is 4mgKOH / g, then cool to obtain hybrid epoxy acrylate side chain modified polyacrylic resin 1.

[0107] Such as figure 2 As shown, in the infrared spectrogram of the hybrid type epoxy acrylate side chain modified polyacrylic resin of the embodiment of the present invention, at 1728cm -1 There is also a strong conjugated carbon-oxygen double bond stretching vibration peak at 1630cm -1 The carbon-carbon double bond stretching vibration peak appears at 913cm -1 The characteristic absorption peak of the epoxy group at the place basically disappears, which shows that the side chain of the carboxylated polyacrylate has been successfully graf...

Embodiment 2

[0109] According to the parts by weight of the raw materials described in Table 3 Hybrid Epoxy Acrylate Side Chain Modified Polyacrylic Resin Example 2, carboxylated polyacrylate 2 and hybrid epoxy acrylate 2 were mixed, and added during heating Basic catalyst and polymerization inhibitor, heat preservation reaction at 95°C for 5 hours until the acid value is 5 mgKOH / g, and cooling to obtain hybrid epoxy acrylate side chain modified polyacrylic resin 2.

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Abstract

The invention discloses polyacrylic resin with side-chain modification of hybrid epoxy acrylate and a synthesis method. The polyacrylic resin is mainly prepared from the following raw materials: carboxylated polyacrylate, hybrid epoxy acrylate, an alkaline catalyst and a polymerization inhibitor. The method comprises the following steps of: mixing the carboxylated polyacrylate and the hybrid epoxyacrylate, adding the alkaline catalyst and the polymerization inhibitor in the heating process, carrying out insulated reaction till the acid value is 3-5 mgKOH / g, cooling and obtaining the polyacrylic resin. The polyacrylic resin disclosed by the invention has the advantages of low viscosity, fast photocuring speed, good adhesion of a cured coating film, high hardness and good flexibility and the like, can be used for the fields of flexible sealing ends and the like in production of paper, floors and liquid-crystal displays; the method is short in reaction time and low in cost and is suitable for industrial production.

Description

technical field [0001] The invention relates to a modified polyacrylic resin and a synthesis method, in particular to a light-curing hybrid epoxy acrylate side chain modified polyacrylic resin and a synthesis method. Background technique [0002] Pure acrylic resin oligomer has good flexibility, excellent yellowing resistance and solvent resistance, and has good adhesion to various substrates, but its mechanical strength and hardness are very low. It is rarely used in the main resin. Epoxy acrylic resin has excellent adhesion, thermal stability, chemical resistance, insulation and mechanical strength, etc., and is widely used in the fields of coatings, adhesives and composite materials. However, unmodified epoxy resins have problems such as high brittleness, poor weather resistance and poor flexibility. Designing and manufacturing UV-curable resins with epoxy acrylic and polypropylene structures can well make up for their lack of performance and achieve the perfect combina...

Claims

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Application Information

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IPC IPC(8): C08G81/02C08G59/17C08F220/14C08F220/18C08F220/06
CPCC08F220/14C08G59/1466C08G81/024C08F220/1804C08F220/06
Inventor 兰支利薛忍田梅黄波肖自胜尹笃林
Owner 湖南恒旺新材料科技有限公司
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