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

A double-crosslinking, castor oil-based technology, which is applied in the field of castor oil-based double-crosslinking active resin monomers and its preparation, can solve the problems of high content of toxic components, complex formula, high volatility, etc., to improve comprehensive performance, The product preparation process is simple and the synthesis process is environmentally friendly

Active Publication Date: 2021-09-07
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 active resin monomer and preparation method thereof
  • Castor oil-based double crosslinkable active resin monomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add ricinoleic acid into the reaction container, then add epichlorohydrin according to the ratio of ricinoleic acid to epichlorohydrin molar ratio of 1:6, and then add 0.5% benzyl triethyl chloride of the total mass of the above reaction raw materials Ammonium, react at 115°C for 2 hours; cool down to 60°C, add calcium oxide and sodium hydroxide with the same molar number of carboxyl groups, and stir at 60°C for 3 hours; finally filter with suction and rotary evaporate to remove excess epichlorohydrin. Castor oil-based intermediate active monomer A; the prepared castor oil-based intermediate active monomer A and 0.5% N,N dimethylbenzylamine accounting for the total mass of the reactants are added to the reactor, and the temperature is raised to 60°C. Then dropwise add acrylic acid to it, the mol ratio of described acrylic acid and castor oil-based intermediate active monomer A is 1:1, after dropwise, 115 ℃ of reaction 2.5h, make castor oil-based intermediate active monom...

Embodiment 2

[0022] Ricinoleic acid is joined in the reaction vessel, then add epichlorohydrin according to the ratio of ricinoleic acid and epichlorohydrin mol ratio 1:9, then add the tetraethylammonium bromide of above-mentioned reaction raw material gross mass 1.5%, React at 120°C for 2 hours; cool down to 60°C, add calcium oxide and sodium hydroxide with an equal molar number of carboxyl groups, and stir for 3 hours at 60°C; finally, filter with suction and rotary evaporate to remove excess epichlorohydrin to obtain castor oil Base intermediate active monomer A; The castor oil base intermediate active monomer A that will make and the triphenylphosphine that accounts for 1.5% of reactant gross mass join in the reactor, be warming up to 80 ℃, to it dropwise then 2 -Ethylacrylic acid, the molar ratio of the 2-ethylacrylic acid to castor oil-based intermediate reactive monomer A is 1:1, after the dropwise addition, react at 120°C for 1.5h to prepare castor oil-based intermediate reactive mo...

Embodiment 3

[0024] Ricinoleic acid is joined in the reaction vessel, then add epichlorohydrin according to the ratio of ricinoleic acid and epichlorohydrin mol ratio 1:7, then add the tetramethylammonium bromide of above-mentioned reaction raw material gross mass 1.0%, React at 117.5°C for 2 hours; cool down to 60°C, add calcium oxide and sodium hydroxide with the same molar number of carboxyl groups, and stir for 3 hours at 60°C; finally, filter with suction and rotary evaporate to remove excess epichlorohydrin to obtain castor oil Base intermediate active monomer A; The castor oil base intermediate active monomer A that will make and account for 1.0% of reactant gross mass N, N dimethylbenzylamine joins in the reactor, is warming up to 70 ℃, then to Add methacrylic acid dropwise, the molar ratio of methacrylic acid to castor oil-based intermediate active monomer A is 1:1, after the dropwise addition, react at 118°C for 2.0h to obtain castor oil-based intermediate active monomer B ; Then...

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Abstract

Castor oil-based double cross-linkable active resin monomer and preparation method thereof, reacting ricinoleic acid with epichlorohydrin to prepare castor oil-based epoxy resin, and then subjecting castor oil-based epoxy resin and unsaturated acid to epoxy resin The ring-opening reaction produces castor oil-based acrylate, and finally reacts with unsaturated anhydride to produce castor oil-based double cross-linkable active resin monomer. The castor oil-based double-crosslinkable active resin monomer prepared by the invention is applied to the field of functional resins, and has broad application prospects in the fields of construction, machinery manufacturing, food packaging, medicine and the like.

Description

technical field [0001] The invention belongs to the field of unsaturated resins, and in particular relates to a castor oil-based double-crosslinkable active resin monomer and a preparation method thereof. Background technique [0002] Double crosslinking curing resin is a special resin developed based on dual curing technology. In the dual curing crosslinking system, the crosslinking or polymerization reaction of the resin is completed through independent stages with different reaction principles. In the cured product Integrating two different copolymerization network systems, such as epoxy-polyurethane, epoxy-unsaturated resin, polyurethane-unsaturated resin, unsaturated resin-siloxane and other double cross-linking systems, in which different stages can pass through room temperature Curing, thermal curing, moisture curing, oxidation curing and other reactions to carry out. Compared with the single curing cross-linking method, the double cross-linking technology can solve ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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