Rosin-modified epoxy ester resin and preparation method thereof

An epoxy ester resin, rosin modification technology, applied in epoxy resin coatings, coatings, etc., can solve the problems of brittle rosin, and achieve the effects of fast drying, high glass temperature, and excellent chemical resistance.

Inactive Publication Date: 2011-06-15
贵阳神迪科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to solve the problem that rosin is neutral and brittle in synthetic resin, and a kind of production preparation method of epoxy ester resin modified with rosin is provided

Method used

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  • Rosin-modified epoxy ester resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Add 60kg rosin and 60kg soybean oil into the reactor, seal it, start heating to 140°C, put in 100kg epoxy resin, raise the temperature to 180°C for 1 hour, and then react at 220°C for 3 hours.

[0030] (2) Cool down to 130°C, add 0.2kg of γ-valerolactone and react at 170°C for 1 hour.

[0031] (3) Cool down to 80°C and add 0.4kg of amino resin, react at 130°C for 1 hour, stop heating when the acid value drops below 10, immediately cool down, pump the esterified product into the dilution tank and cool down to 100°C Next, add 180kg xylene for dilution. Filtration starts below 60°C to obtain a rosin-modified epoxy ester resin.

Embodiment 2

[0033] (1) Add 50kg of rosin and 70kg of linoleic acid into the reactor, seal it, start heating to 140°C, put in 100kg of epoxy resin, raise the temperature to 180°C for 1 hour, and then react at 210°C for 4 hours.

[0034] (2) Cool down to 130°C, add 0.15kg of γ-valerolactone and react at 160°C for 1.5h.

[0035] (3) Cool down to 80°C and add 0.2kg of TDI, react at 100°C for 1 hour, stop heating when the acid value drops below 10, immediately cool down, pump the esterified product into the dilution tank and cool down to below 100°C , Add 180kg xylene for dilution. Filtration starts below 60°C to obtain a rosin-modified epoxy ester resin.

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Abstract

The invention relates to a rosin-modified epoxy ester resin and a preparation method thereof, in particular to an epoxy ester resin which is dried quickly and has good chemical resistance, low cost and simple production process and a preparation method thereof. The invention is characterized in that the epoxy ester resin is prepared by the reaction of 40-50wt% of epoxy resin with the epoxy value of 0.09-0.22, 0.1-1.0% of toughened substances, 20-30% of oleic acid substances containing unsaturated double bonds, 20-30% of rosin and 1.0-3.5% of chain extender substances. The prepared epoxy esterresin is modified by the rosin, and broadens the use of the rosin which is a regenerative resource, thereby improving the utilization rate of the regenerative resource. At the same time, the epoxy ester resin has higher glass transition temperature, can be dried quickly and has good mechanical properties and excellent chemical resistance. The epoxy ester resin can be used as the film forming substance of anti-corrosion paint, and paint has better properties.

Description

technical field [0001] The invention relates to a rosin-modified epoxy ester resin and a preparation method, in particular to an epoxy ester resin with fast drying, excellent chemical medium resistance, low cost and simple production process and a preparation method. Background technique [0002] Rosin is a renewable resource, which has good pressure sensitivity and fast viscosity, but has the characteristics of poor cohesion and brittleness, so it is rarely used in the synthesis of resins for coatings. [0003] The current synthesis of epoxy ester resin is generally obtained by the esterification reaction of vegetable oleic acid and epoxy resin (epoxy ester 0.09-0.22). The glass temperature of the obtained resin is relatively low, and the drying time of the resin is slow. Publication number is that the Chinese invention patent of CN1563135A has provided a kind of improved epoxy ester resin and preparation method thereof, and its feature is that the epoxy resin is by the veg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/14C09D163/10
Inventor 张建新刘应科刘双全张云贵周真明
Owner 贵阳神迪科技有限公司
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