Castor oil-based double-crosslinkable reactive resin monomer and preparation method thereof

A castor oil-based, active resin technology, applied in the field of unsaturated resins, can solve the problems of high content of toxic components, complex formula, high volatility, etc., and achieve the effects of improving comprehensive performance, simple product preparation process, and environmental protection in the synthesis process

Active Publication Date: 2019-06-07
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

[0006] The technical problem to be solved: the traditional double cross-linking resin has the disadvantages of complex formula, high volatility, and high content of toxic components. In order to improve its shortcomings, the present invention provides a castor oil-based double cross-linking active resin monomer and its preparation method , through two cross-linking methods of epoxy and unsaturated double bonds to achieve the effect of double cross-linking, this method has mild reaction conditions during the synthesis process, and the obtained product has excellent stability

Method used

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  • Castor oil-based double-crosslinkable reactive resin monomer and preparation method thereof
  • Castor oil-based double-crosslinkable reactive resin monomer and preparation method thereof
  • Castor oil-based double-crosslinkable reactive resin monomer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Add ricinoleic acid to the reaction vessel, then add epichlorohydrin in the ratio of ricinoleic acid to epichlorohydrin molar ratio of 1:6, and then add 0.5% of the total mass of the reaction raw materials benzyl triethyl chloride Ammonium, react at 115°C for 2h; lower the temperature to 60°C, add calcium oxide and sodium hydroxide equal to the carboxyl group, and stir for 3h at 60°C; finally, filter by suction and remove excess epichlorohydrin by rotary evaporation. Castor oil-based intermediate active monomer A; the prepared castor oil-based intermediate active monomer A and 0.5% of the total mass of the reactant N,N dimethylbenzylamine are added to the reactor, and the temperature is raised to 60°C, Then acrylic acid was added dropwise to it, and the molar ratio of the acrylic acid to the castor oil-based intermediate active monomer A was 1:1. After the addition, the reaction was performed at 115°C for 2.5 hours to obtain the castor oil-based intermediate active monome...

Embodiment 2

[0022] Add ricinoleic acid to the reaction vessel, then add epichlorohydrin in a ratio of 1:9 molar ratio of ricinoleic acid to epichlorohydrin, and then add 1.5% tetraethylammonium bromide of the total mass of the above reaction raw materials, React at 120°C for 2h; cool down to 60°C, add calcium oxide and sodium hydroxide equal to the carboxyl group, and stir for 3h at 60°C; finally, filter by suction and remove excess epichlorohydrin by rotary evaporation to obtain castor oil The intermediate active monomer A based on castor oil; the castor oil-based intermediate active monomer A and 1.5% of the total mass of the reactant are added to the reactor, the temperature is raised to 80 ℃, and then 2 -Ethyl acrylic acid, the molar ratio of the 2-ethyl acrylic acid to the castor oil-based intermediate active monomer A is 1:1, after the dropping is completed, react at 120°C for 1.5 hours to obtain the castor oil-based intermediate active monomer B ; Then the prepared castor oil-based ...

Embodiment 3

[0024] Add ricinoleic acid to the reaction vessel, then add epichlorohydrin in a ratio of 1:7 molar ratio of ricinoleic acid to epichlorohydrin, and then add 1.0% tetramethylammonium bromide of the total mass of the above reaction raw materials, React at 117.5°C for 2h; lower the temperature to 60°C, add calcium oxide and sodium hydroxide equal to the carboxyl group, and stir for 3h at 60°C; finally, after suction filtration, the excess epichlorohydrin is removed by rotary evaporation to obtain castor oil Add the prepared castor oil-based intermediate active monomer A and N,N dimethylbenzylamine accounting for 1.0% of the total mass of the reactants into the reactor, heat up to 70 ℃, and then The methacrylic acid was added dropwise, and the molar ratio of the methacrylic acid to the castor oil-based intermediate active monomer A was 1:1. After the dropping was completed, the reaction was performed at 118°C for 2.0 hours to obtain the castor oil-based intermediate active monomer ...

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Abstract

The invention discloses a castor oil-based double-crosslinkable reactive resin monomer and a preparation method thereof. The preparation method comprises the following steps: reacting ricinoleic acidwith epichlorohydrin to obtain castor oil-based epoxy resin, carrying out an epoxy ring-opening reaction on the castor oil-based epoxy resin and unsaturated acid to produce castor oil-based acrylate,and finally reacting the castor oil-based acrylate with unsaturated acid anhydride to obtain the castor oil-based double-crosslinkable reactive resin monomer. The castor oil-based double-crosslinkablereactive resin monomer prepared in the invention is applied to the field of functional resins, and has wide application prospects in the fields of building, mechanical manufacturing, food packaging,medicines and the like.

Description

Technical field [0001] The invention belongs to the field of unsaturated resins, and specifically relates to a castor oil-based dual crosslinkable active resin monomer and a preparation method thereof. Background technique [0002] Double crosslinking curing resin is a special resin developed based on double curing technology. In the double curing crosslinking system, the crosslinking or polymerization reaction of the resin is completed through independent stages with different reaction principles. Fusion of two different copolymer network systems, such as epoxy-polyurethane, epoxy-unsaturated resin, polyurethane-unsaturated resin, unsaturated resin-siloxane and other dual cross-linking systems, which can pass room temperature at different stages Reactions such as curing, thermal curing, moisture curing, and oxidative curing proceed. Compared with a single curing cross-linking method, dual cross-linking technology can solve the problem of difficult application on opaque materia...

Claims

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Application Information

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IPC IPC(8): C08G59/20
Inventor 李守海夏建陵易靖李梅丁海阳许利娜杨小华张燕
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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