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Abietyl hyper branched epoxy resin and preparation method and application thereof

An epoxy resin and rosin-based technology, which is applied in the direction of epoxy resin glue, epoxy resin coating, adhesive type, etc., can solve the problem of low epoxy value, and achieve simple preparation process, reduced dependence, and low viscosity Effect

Active Publication Date: 2017-03-22
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The epoxy value of these rosin-based hyperbranched epoxy resins is not high (0.13-0.23), and only has the function of toughening

Method used

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  • Abietyl hyper branched epoxy resin and preparation method and application thereof
  • Abietyl hyper branched epoxy resin and preparation method and application thereof
  • Abietyl hyper branched epoxy resin and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (a) React 40.00g of maleopimaric anhydride with 4.65g of ethylene glycol, 20g of xylene, and 0.06g of titanium tetraethoxide at 120°C for 6h, and then remove the xylene at 100°C under reduced pressure to obtain a carboxy-terminated abietyl hyperbranched polymer The ester (HBPE-1, containing 6 mol carboxyl groups per mole of HBPE-1), has a number average molecular weight of about 1340 g / mol.

[0031] (b) React 20.00g of HBPE-1, 41.21g of epichlorohydrin, and 0.04g of tetrabutylammonium bromide at 120°C for 3h, then remove unreacted epichlorohydrin under reduced pressure, and then add 24.00g of ethyl acetate, 4.46g of sodium hydroxide was reacted at 10°C for 7h. After the reaction, the layers were separated, the organic layer was aqueous to neutral and dried over anhydrous magnesium sulfate, and the ethyl acetate was removed under reduced pressure to obtain a rosin-based hyperbranched epoxy resin (HBEE -1, each mole of HBEE-1 contains 6 mol epoxy groups), the epoxy value ...

Embodiment 2

[0033] (a) React 40.00g maleopimaric anhydride with 5.58g ethylene glycol, 25g xylene, and 0.05g n-butyl titanate at 140°C for 5h, then remove the xylene under reduced pressure at 110°C to obtain a carboxy-terminated abietyl overbranch Polyester (HBPE-2, containing 12mol carboxyl groups per mole of HBPE-2), the number average molecular weight is about 2800g / mol.

[0034] (b) React 20.00g HBPE-2, 42.69g epichlorohydrin, and 0.05g tetrabutylammonium chloride at 110°C for 4 hours, then remove unreacted epichlorohydrin under reduced pressure, then add 20.00g tetrahydrofuran, 4.62g Sodium hydroxide, reacted at 0°C for 8 hours, separated after the reaction, the organic layer was aqueous to neutral, dried over anhydrous magnesium sulfate, and tetrahydrofuran was removed under reduced pressure to obtain rosin-based hyperbranched epoxy resin (HBEE-2, per The mole of HBEE-2 contains 12mol epoxy groups), the epoxy value is 0.32mol / 100g, and the viscosity is 740cp (25°C).

Embodiment 3

[0036] (a) React 40.00g maleopimaric anhydride with 5.92g ethylene glycol, 30g xylene, and 0.10g zinc acetate at 160°C for 4h, then remove xylene under reduced pressure at 120°C to obtain a carboxy-terminated abietyl hyperbranched polyester (HBPE-3, containing 24mol carboxyl groups per mole of HBPE-3), the number average molecular weight is about 4850g / mol.

[0037] (b) React 20.00g of HBPE-3, 48.01g of epichlorohydrin, and 0.18g of hexadecyltrimethylammonium bromide at 100°C for 5h, then remove unreacted epichlorohydrin under reduced pressure, and then add 25.00g Butyl acetate and 7.85g potassium hydroxide were reacted at 30°C for 5 hours. After the reaction, the layers were separated, the organic layer was aqueous to neutral, dried over anhydrous magnesium sulfate, and the butyl acetate was removed under reduced pressure to obtain a rosin-based hyperbranched ring Oxygen resin (HBEE-3, containing 24mol epoxy groups per mole of HBEE-3), the epoxy value is 0.30mol / 100g, and the...

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Abstract

The invention discloses abietyl hyper branched epoxy resin and a preparation method thereof. The method comprises the following steps: a) maleopimaric anhydride and bio-dihydric alcohol, a benzene solvent, and a catalyst are reacted, the benzene solvent is removed through pressure reduction to obtain the abietyl hyper branched polyester; and b) the abietyl hyper branched polyester and chloropropylene oxide are subjected to a reaction under the effect of an open loop reaction catalyst, the unreacted chloropropylene oxide is removed through pressure reduction, an organic solvent and an alkalescence catalyst are added for the reaction, and then processing is carried out to obtain the abietyl hyper branched epoxy resin. The invention also discloses an application of the resin. The rosin is introducecd into a hyper branched epoxy resin structure, a special hydrogen phenanthrene ring structure of rosin is used, rigidity, heat resistance and solidification speed are increased, viscosity is low, hydroxy is not contained, so that the epoxy resin can be used for the fields of high temperature resistance gluing agent, high temperature resistance paint, environmental protection low volatilization paint, low volatilization resin and routine epoxy resin.

Description

technical field [0001] The invention relates to the technical field of bio-based polymer resins, in particular to a rosin-based hyperbranched epoxy resin and its preparation method and application. Background technique [0002] Rosin is the most important product in the forest chemical industry, and has many excellent properties, such as anti-corrosion, insulation, thickening, emulsification, etc. As a valuable renewable resource, rosin and its deep-processed products are widely used in the fields of coatings, inks, papermaking, adhesives, electronics, food, medicine, and biological agents. In recent years, under the general trend of using renewable resources to prepare chemical substances and materials, the application research of rosin has developed more rapidly. Rosin has remarkable structural characteristics because of its strong rigidity of the hydrophenanthrene ring structure, and its rigidity is comparable to that of the benzene ring. In the current situation where ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/12C08G63/553C08L63/00C09D163/00C09J163/00
CPCC08G59/12C08G63/553C08L63/00C09D5/18C09D163/00C09J163/00
Inventor 张俊珩周继亮李廷成张道洪张爱清
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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