Ultraviolet cross-linking copolymer

A technology of cross-linked copolymers and ultraviolet light, which is applied in the field of copolymers and ultraviolet light cross-linked copolymers. It can solve the problems of high cross-linking temperature, yellowing resistance and migration resistance, and inconvenient construction on site. , to achieve the effect of maintaining stable performance

Inactive Publication Date: 2013-02-13
HEBEI ZHISHENG GREEN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, thermal crosslinking and two-component room temperature crosslinking require higher crosslinking temperature or longer crosslinking time, and the mixing of two components brings inconvenience to on-site construction; UV crosslinking requires the addition of small molecule ultraviolet light Initiator, so that the product's anti-yellowing and anti-migration properties cannot meet the requirements

Method used

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  • Ultraviolet cross-linking copolymer
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 0.05 parts of 4-(2-acryloyloxy-methylene) benzophenone, 25 parts of styrene, 5 parts of methyl methacrylate, 25 parts of butyl acrylate, 5 parts of butyl methacrylate, isoacrylate 15 parts of octyl ester, 9.95 parts of vinyl acetate, 3 parts of benzyl acrylate, 10 parts of 2-hydroxypropyl methacrylate and 2 parts of acrylamide were used as the unsaturated monomer composition. Among them, 4-(2-acryloyloxy-methylene)benzophenone is a UV active monomer, and the others are monofunctional monomers.

[0032] In a reaction kettle with a stirrer, a temperature control device, a condensing device, a dropping device and a thermometer, the unsaturated monomer composition and 1 part of azobisisoheptanonitrile are used as the main raw materials, and the conventional bulk is carried out at 80 ° C. After polymerization, the product is dissolved in acetone, precipitated in methanol, washed and dried to obtain a solid ultraviolet cross-linked copolymer with a number average molecular we...

Embodiment 2

[0035] 3 parts of 4-methacryloxybenzophenone, 35 parts of methyl methacrylate, 20 parts of isobornyl acrylate, 12 parts of vinyl acetate, 10 parts of butyl acrylate, 5 parts of butyl methacrylate , 5 parts of isodecyl acrylate, 5 parts of methoxyethyl methacrylate, 2 parts of carboxyethyl acrylate and 3 parts of maleic acid as the unsaturated monomer composition. Among them, 4-methacryloyloxybenzophenone is an ultraviolet photoactive monomer, and the others are monofunctional monomers.

[0036] In a reaction kettle with a stirrer, temperature control device, condensing device, dropping device and thermometer, with unsaturated monomer composition and 1 part of azobisisobutyronitrile as the main raw materials, carry out conventional bulk at 80 ° C. After polymerization, the product is dissolved in acetone, precipitated in methanol, washed and dried to obtain a solid ultraviolet light cross-linked copolymer with a number-average molecular weight of 60,000 g / mol.

[0037] UV cros...

Embodiment 3

[0039] 20 parts of 4-(2-hydroxy-3-allyloxy-propoxy) benzophenone, 6 parts of methyl methacrylate, 10 parts of ethyl acrylate, 40 parts of butyl methacrylate (change to 40) 1, 11 parts of butyl acrylate, 8 parts of isooctyl acrylate, 5 parts of 2-hydroxyethyl methacrylate and 2 parts of acrylic acid as the unsaturated monomer composition. Among them, 4-(2-hydroxy-3-allyloxy-propoxy)benzophenone is a UV active monomer, and the others are monofunctional monomers.

[0040] In a reaction kettle with a stirrer, temperature control device, condensing device, dropping device and thermometer, with unsaturated monomer composition and 1 part of azobisisobutyronitrile as the main raw materials, carry out conventional bulk at 80 ° C. After polymerization, the product is dissolved in acetone, precipitated in methanol, washed and dried to obtain a solid ultraviolet light cross-linked copolymer with a number average molecular weight of 15000 g / mol.

[0041] UV light cross-linked copolymer so...

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Abstract

The invention relates to an ultraviolet cross-linking copolymer and belongs to the field of macromolecule compounds. The ultraviolet cross-linking copolymer is a modified acrylate copolymer with a main chain formed by repeated structure units and a lateral chain containing ultraviolet light active groups, and is obtained by copolymerization reaction of 0.05 part to 20 parts of ultraviolet light active monomer and 80-99.5 parts of single functionality monomers by weight. The copolymer has the advantages of ultraviolet light polymerization and thermoplastic acrylic copolymer, and conducts remarkable chemical cross-linking reaction under ultraviolet irradiation reaction in the solid state or the coating filming state to quickly form a self-cross-linking network with the largest cross-linking degree to be over 90%. The ultraviolet cross-linking copolymer is still stable in performance if stored for 6 months under room temperature.

Description

technical field [0001] The invention relates to a copolymer, in particular to an ultraviolet light cross-linked copolymer obtained by participating in a polymerization reaction of an ultraviolet light active monomer, and belongs to the field of polymer compounds. Background technique [0002] The first patent for UV curing coatings was born in 1947. After more than half a century of development, UV curing technology has become a relatively mature technology. Its products are green and environmentally friendly. Generally, the energy consumption of UV curing is heat curing. One-fifth of that, and UV-curable coatings contain less volatile components and less pollution. What attracts researchers and developers most is that UV-curable coatings can reduce raw material consumption and help reduce economic costs. In the past few years, UV-curable coatings have developed rapidly in industries such as optical fiber coating, CD coating / DVD adhesive, food packaging, medical equipment, m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F212/08C08F220/14C08F218/08C08F220/28C08F220/56C08F220/30C08F222/02C08F220/06C08F216/14C08F220/34C08F226/10C08J3/28C08J3/24
Inventor 陈智陈嘉张大海刘治生
Owner HEBEI ZHISHENG GREEN TECH
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