Bio-based dimer fatty acid base vinyl ester resin as well as preparation method and application thereof

A bio-based dimerized fatty acid-based vinyl ester technology is applied in the field of preparing dimerized fatty acid-based vinyl ester resin, which can solve the problems of high price of epoxy resin, limited wide application and the like, and achieves mild reaction conditions, simple process, The effect of reducing consumption

Inactive Publication Date: 2012-12-12
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this kind of epoxy resin is relatively expensive, which limits its wide application.

Method used

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  • Bio-based dimer fatty acid base vinyl ester resin as well as preparation method and application thereof
  • Bio-based dimer fatty acid base vinyl ester resin as well as preparation method and application thereof
  • Bio-based dimer fatty acid base vinyl ester resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Under a nitrogen atmosphere, put a certain amount of dimer fatty acid in a reaction flask, stir and heat to 65°C, add glycidyl methacrylate dropwise at a molar ratio of 1.75:1 to dimer fatty acid; The total mass of 0.05% of 2-tert-butylhydroquinone was added to the total mass of 2.5% of tetramethylammonium chloride, and then heated to 110 ° C, refluxed for 6 hours to obtain the intermediate product dimer fatty acid unsaturated diglyceride Then the system is properly cooled to 70°C, and acrylic anhydride is added at a ratio of 1.75:1 to the dimer fatty acid molar ratio, refluxed for 4 hours, and finally the dimer fatty acid-based vinyl ester resin monomer is obtained by activated carbon decolorization; The prepared resin monomer and ethyl acrylate monomer were mixed in a mass ratio of 100:80, stirred evenly at 50° C. and then cooled to normal temperature to obtain a dimerized fatty acid-based vinyl ester resin.

Embodiment 2

[0040]Under a nitrogen atmosphere, put a certain amount of dimerized fatty acid in a reaction flask, stir and heat to 85°C, and add glycidyl methacrylate dropwise at a molar ratio of 2.5:1 to the dimerized fatty acid; 0.25% of the total mass of p-benzoquinone, adding 0.25% of the total mass of triethylbenzyl ammonium chloride, and then heating up to 140 ° C, refluxed for 1 h, to obtain the intermediate product dimer fatty acid unsaturated diglyceride; then the system Appropriately lower the temperature to 90°C, add crotene anhydride at a molar ratio of 2.5:1 to the dimerized fatty acid, reflux for 4 hours, and finally decolorize the dimerized fatty acid-based vinyl ester resin monomer with activated carbon; the obtained Resin monomer and propyl acrylate monomer were mixed in a mass ratio of 100:20, stirred evenly at 70°C and then cooled to room temperature to obtain dimerized fatty acid-based vinyl ester resin.

Embodiment 3

[0042] Under a nitrogen atmosphere, put a certain amount of dimerized fatty acid in a reaction flask, stir and heat to 85°C, and add glycidyl methacrylate dropwise at a molar ratio of 2.5:1 to the dimerized fatty acid; Add 0.25% of the total mass of 2-tert-butylhydroquinone to 0.25% of the total mass of tetramethylammonium chloride, then raise the temperature to 140 °C, and reflux for 1 h to obtain the intermediate product dimerized fatty acid-based unsaturated diglyceride Then the system is properly cooled to 70°C, and acrylic anhydride is added in a ratio of 2.5:1 to the dimer fatty acid molar ratio, refluxed for 4 hours, and finally the dimer fatty acid-based vinyl ester resin monomer is obtained by activated carbon decolorization; The prepared resin monomer and butyl acrylate were mixed in a mass ratio of 100:50, stirred evenly at 50° C. and then cooled to room temperature to obtain a dimerized fatty acid-based vinyl ester resin.

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Abstract

The invention discloses a bio-based dimer fatty acid base vinyl ester resin as well as a preparation method and application thereof. The preparation method comprises the following steps of: enabling dimer fatty acid and unsaturated carboxylic acid base glycidyl ester to have reflux reaction in an anaerobic environment under the condition that polymerization inhibitor and catalyst exist, so as to obtain dimer fatty acid base unsaturated diglyceride; enabling the obtained dimer fatty acid base unsaturated diglyceride to have reflux reaction with a modifying agent, carrying out decoloration by activated carbon to obtain a dimer fatty acid base vinyl ester resin monomer; and carrying out copolymerization on the dimer fatty acid base vinyl ester resin monomer and other crosslinking monomers to obtain the dimer fatty acid base vinyl ester resin. The dimer fatty acid base vinyl ester resin can be used for preparing corresponding products and materials after being treated by ultraviolet-curing and heating-curing. The vinyl ester resin curing product has the advantages of good toughness, corrosion resistance, weather fastness and product stability; the preparation technology is simple in route, mild in conditions and free from generation of the three wastes; and bio-based dimer fatty acid base vinyl ester resin is made of an environmentally-friendly regenerative oil resource, so that the product price is low.

Description

[0001] technical field [0002] The invention belongs to the field of unsaturated resins, in particular to a method for preparing dimerized fatty acid-based vinyl ester resins. [0003] Background technique [0004] Vinyl ester resin is a kind of unsaturated polyester resin. The basic vinyl ester resin with the largest amount is a bisphenol synthesized by ring-opening addition of bisphenol A epoxy resin and carboxyl-containing vinyl monomer. A epoxy acrylate. After the solid or semi-solid bisphenol A epoxy acrylate is diluted with about 40% diluent, the free radical copolymerization reaction of each monomer is initiated by the initiator. The curing mechanism is similar to that of unsaturated polyester resin, and its chemical The structure is similar to epoxy resin, so vinyl resin has many excellent properties of unsaturated polyester and epoxy resin. Vinyl resin has been widely used in petrochemical, metallurgy, papermaking, electroplating, chlor-alkali, medicine, food...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F222/14C08F222/16C08F220/18C08F220/14C08F212/08C08F212/36C08F212/14C08F212/12C08F232/08C08F218/18
Inventor 夏建陵李守海李梅黄坤汪梅杨小华张燕
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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