Preparation method of rosin modified epoxy ester resin

An epoxy ester resin and rosin modification technology, which is applied in the field of deep processing of rosin, can solve problems such as poor weather resistance, and achieve the effects of good scrub resistance, fast drying and strong adhesion.

Inactive Publication Date: 2014-12-17
GUANGXI ZHONGCHANG RESIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of this invention is to provide a kind of preparation method of rosin modified epoxy ester resin, this method can solve the problem of poor weather resistance by rosin modified epoxy ester resin

Method used

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  • Preparation method of rosin modified epoxy ester resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Add 1 kg of epoxy resin and 1 kg of soy-oleic acid into the reactor, stir evenly, heat up to 90°C, react for 60 minutes, then add 200 g of rosin and 125 g of diallyl phthalate, stir evenly, and heat up to 120° C., reacting for 60 minutes to obtain a rosin-modified epoxy ester resin.

Embodiment 2

[0014] Add 10 kg of epoxy resin and 12 kg of soybean oil into the reaction kettle, stir evenly, heat up to 100°C, react for 30 minutes, then add 3 kg of rosin and 1 kg of glycerin, stir evenly, heat up to 115°C, react for 80 minutes, A rosin-modified epoxy ester resin was obtained.

Embodiment 3

[0016] Add 50 kg of epoxy resin and 40 kg of soybean oil into the reaction kettle, stir evenly, heat up to 95°C, react for 45 minutes, then add 12.5 kg of rosin and 7.5 kg of trimethylolpropane, stir evenly, heat up to 110°C, React for 70 minutes to obtain rosin-modified epoxy ester resin.

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Abstract

The invention discloses a preparation method of rosin modified epoxy ester resin, and relates to the technical field of deep processing of rosin. The preparation method comprises the following steps: adding epoxy resin and soya oil acid, uniformly stirring, heating to 90-100DEG C, reacting for 30-60min, adding rosin and a chain extender, uniformly stirring, heating to 110-120DEG C, and reacting for 60-80min to obtain the rosin modified epoxy ester resin. The rosin modified epoxy ester resin prepared through the method has the advantages of strong toughness and flexibility, aging resistance, water resistance, scrubbing resistance, contamination resistance and good weatherability.

Description

technical field [0001] The invention relates to the technical field of rosin deep processing, in particular to a preparation method of rosin-modified epoxy ester resin. Background technique [0002] Epoxy ester resin is prepared from vegetable oleic acid and epoxy ester through esterification reaction. Due to its low preparation cost, good product stability and strong adhesion, it is widely used in the primer of automobiles or tractors. However, it still has unsatisfactory weather resistance properties such as water resistance, scrub resistance and stain resistance, which ultimately limits the application range of epoxy ester resins. Contents of the invention [0003] The purpose of this invention is to provide a kind of preparation method of rosin modified epoxy ester resin, this method can solve the problem of poor weather resistance by rosin modified epoxy ester resin. [0004] In order to solve the above problems, the technical solution adopted in the present inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/14C09F1/04
Inventor 宣景建
Owner GUANGXI ZHONGCHANG RESIN
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