Renewable bio-based vinyl ester resin and preparation method thereof

A kind of bio-based vinyl ester and biological technology, applied in the field of renewable bio-based vinyl ester resin and its preparation, can solve the problems of non-degradable thermosetting vinyl ester resin, high VOC emission, difficult recycling, etc., and achieve low shrinkage High efficiency, low VOC emission, and good mechanical properties

Active Publication Date: 2016-02-10
HENGSHUI XINGUANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a new type of renewable bio-based vinyl ester resin and its preparation method to solve the problem that the existing thermosetting vinyl ester resin cannot be degraded, resulting in difficulty in recycling or high VOC emissions and poor environmental friendliness

Method used

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  • Renewable bio-based vinyl ester resin and preparation method thereof
  • Renewable bio-based vinyl ester resin and preparation method thereof
  • Renewable bio-based vinyl ester resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Take a certain amount of lactic acid in the reaction kettle, add succinic anhydride in a molar ratio of 0.05:1 to lactic acid, gradually raise the temperature to 130°C, and mix evenly with magnetic stirring, control the system pressure at 10 4 Under reduced pressure and reflux under Pa for 4h; slowly drop a certain amount of Sn(Oct) 2 (the addition amount is 0.15% of the mass of lactic acid), gradually warming up to 160°C, controlling the pressure inside the kettle to 500Pa, reflux reaction for 6h, cooling to obtain block oligomers, and adopting 0.1mol / L KOH-ethanol standard solution to measure the acid value , the measured value is 217mgKOH / g; weigh a certain amount of oligomers in the reaction bottle according to the mass ratio, heat up to 120°C to melt completely, and gradually cool down to 60°C; Slowly add glycidyl methacrylate dropwise at 0.275:1, then gradually raise the temperature to 70-80°C and stir evenly, react for 1-3.5 hours; add 0.10%, 0.01% tetramethylamm...

Embodiment 2

[0052] Take a certain amount of lactic acid in the reaction kettle, add succinic anhydride in a molar ratio of 0.12:1 to lactic acid, gradually raise the temperature to 130°C, and mix evenly with magnetic stirring, control the system pressure at 10 4 Under reduced pressure and reflux under Pa for 2h; slowly drop a certain mass of Sn(Oct) 2 (the addition amount is 0.30% of the lactic acid mass), gradually warming up to 150°C, controlling the pressure in the kettle to 500Pa, reflux reaction for 8h, and cooling to obtain the intermediate block oligomer; adopt 0.1mol / L KOH-ethanol standard solution to measure Acid value, the measured value is 395mgKOH / g; weigh a certain amount of oligomers in the reaction bottle according to the mass ratio, heat up to 120°C to melt completely, and gradually cool down to 60°C; Slowly add glycidyl methacrylate dropwise at a mass ratio of 0.57:1, then gradually raise the temperature to 70-80°C and stir evenly, react for 1-3.5 hours; add 0.15%, 0.01% ...

Embodiment 3

[0054] Take a certain amount of lactic acid in a reaction kettle, add succinic anhydride in a molar ratio of 0.0245:1 to lactic acid, gradually raise the temperature to 130°C, and mix evenly with magnetic stirring, control the system pressure at 10 4 Under reduced pressure and reflux under Pa for 4h; slowly drop a certain mass of Sn(Oct) 2 (the addition amount is 0.15% of the mass of lactic acid), gradually warming up to 160°C, controlling the pressure in the kettle to 500Pa, refluxing for 6h, cooling to obtain the intermediate block oligomer; adopting 0.1mol / L KOH-ethanol standard solution for determination Acid value, the measured value is 205mgKOH / g; Weigh a certain amount of oligomers in the reaction bottle according to the mass ratio, heat up to 120°C to melt completely, and gradually cool down to 60°C; Slowly add glycidyl methacrylate at a mass ratio of 0.26:1, then gradually heat up to 70-80°C and stir evenly, react for 1-3.5 hours; add 0.35%, 0.01% triphenylphosphine a...

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Abstract

The invention discloses renewable bio-based vinyl ester resin and a preparation method thereof. The resin is prepared by the following steps: carrying out reduced polymerization on polybasic acid, polybasic anhydride and lactic acid to obtain a block oligomer; further reacting the block oligomer and a reactive monomer to obtain the bio-based vinyl ester resin; and dissolving the bio-based vinyl ester resin into a reactive diluent, so as to obtain the renewable bio-based vinyl ester resin. With lactic acid, the polybasic anhydride and derivatives thereof as basic materials, the novel renewable bio-based vinyl ester resin is provided; the resin disclosed by the invention has the advantages of good mechanical property, relatively low shrinkage rate, low VOC emission and the like after being cured; and particularly, the resin disclosed by the invention has renewable performance and has excellent application and development prospects.

Description

technical field [0001] The invention relates to a bio-based thermosetting resin and its preparation, in particular to a renewable bio-based vinyl ester resin and its preparation method. Background technique [0002] Vinylester resin (Vinylesterresin) is a kind of resin with excellent chemical corrosion resistance, generally made of bisphenol A type or novolac type epoxy resin through ring-opening reaction of epoxy group with methacrylic acid (or acrylic acid) have to. Vinyl ester resin has excellent mechanical properties and adhesive properties because it retains the skeleton structure of epoxy resin, and at the same time has good processing properties similar to unsaturated polyester resin. These excellent properties and its unique high corrosion resistance make it have broad application space and good development prospects in petrochemical, electroplating metallurgy, paint coating, fan blades, yacht manufacturing, construction and transportation and other application fiel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/06C08F283/01C08G63/91C08G63/08C08L51/08
Inventor 耿星宋亚南田海长
Owner HENGSHUI XINGUANG CHEM
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