Preparation method of novel waste cooking oil based unsaturated polyester resin

A technology for waste edible oil and polyester resin, which is applied in the field of preparation of new unsaturated polyester resin from renewable waste edible oil, can solve the problems of limited production scale and limited reuse of waste edible oil, and achieves dimensional stability of products Good, lower production cost, high hardness

Inactive Publication Date: 2014-08-20
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the domestic industrial utilization of waste cooking oil is mainly concentrated in the production of biodiesel, washing powder and biological mineral processing agent, but the production scale of these fields is limited, and the reuse of waste cooking oil is also limited

Method used

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  • Preparation method of novel waste cooking oil based unsaturated polyester resin
  • Preparation method of novel waste cooking oil based unsaturated polyester resin
  • Preparation method of novel waste cooking oil based unsaturated polyester resin

Examples

Experimental program
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preparation example Construction

[0034] Preparation of B monoglyceride

[0035] Put waste cooking oil and glycerin with an acid value less than 1mgKOH / g into the reactor at a ratio of 2.5:1 to 3:1, and feed N into the reactor. 2 , at N 2 Under protection, add 0.1 to 0.3% catalyst Ca(OH) of the sum of waste edible oil and glycerol with a relative acid value less than 1mgKOH / g to the reactor 2 , the reaction kettle is heated to 210-250°C, and the catalyst Ca(OH) 2 Carry out alcoholysis reaction on the waste edible oil with an acid value less than 1mgKOH / g under the action, the reaction time is 3-5h, and then the temperature drops below 15°C to obtain monoglyceride, which is ready for use.

[0036] Carry out alcoholysis reaction of waste cooking oil with acid value less than 1mgKOH / g and glycerol to obtain monoglyceride, the general reaction formula is as follows:

[0037]

[0038]The synthesis principle of this step is: the redistribution of fatty acids occurs under the temperature of 210-250° C. and the ...

Embodiment 1

[0050] Embodiment 1, according to the above-mentioned preparation method:

[0051] A pre-esterification treatment of waste cooking oil

[0052] Put the preliminary purified 70% waste cooking oil and 30% glycerin into an autoclave, react at a high temperature of 200°C for 6 hours, carry out pre-esterification treatment on the preliminary purified waste cooking oil, after the pre-esterification treatment The acid value of waste cooking oil is 0.8mgKOH / g.

[0053] Preparation of B monoglyceride

[0054] Put waste edible oil and glycerin with an acid value of 0.8mgKOH / g into the reactor at a ratio of 2.5:1, and feed N into the reactor. 2 , at N 2 Under protection, add 0.1% catalyst Ca(OH) of the waste edible oil and glycerin amount of relative acid value 0.8mgKOH / g in the reactor 2 , the reaction kettle is heated to 210 ° C, in the catalyst Ca(OH) 2 Carry out alcoholysis reaction on the waste cooking oil with an acid value of 0.8mgKOH / g under the action of 3h, and then the te...

Embodiment 2

[0059] Embodiment 2, according to the above-mentioned preparation method:

[0060] A pre-esterification treatment of waste cooking oil

[0061] Put the preliminary purified 80% waste cooking oil and 20% glycerin into the autoclave, react at a high temperature of 215°C for 8 hours, carry out pre-esterification treatment on the preliminary purified waste cooking oil, after the pre-esterification treatment The acid value of waste cooking oil is 0.7mgKOH / g.

[0062] Preparation of B monoglyceride

[0063] Put waste edible oil and glycerin with an acid value of 0.7mgKOH / g into the reactor at a ratio of 2.7:1, and feed N into the reactor. 2 , at N 2 Under protection, add the catalyst Ca(OH) of 0.2% of the waste edible oil and glycerin amount of relative acid value 0.7mgKOH / g in the reactor 2 , the reaction kettle was heated to 230°C, and the catalyst Ca(OH) 2 Carry out alcoholysis reaction on the waste cooking oil with an acid value of 0.7mgKOH / g under the influence of alcoholy...

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Abstract

The invention relates to a method for preparing novel unsaturated polyester resin from waste cooking oil. According to the preparation method, characteristics of waste cooking oil are fully utilized. Waste cooking oil which undergoes preliminary purification and glycerin are mixed in a high pressure reactor to carry out pre-esterification treatment so as to reduce acid value of waste cooking oil; the waste cooking oil which has undergone pre-esterification treatment reacts with glycerol to carry out an alcoholysis reaction so as to generate monoglyceride; monoglyceride reacts with maleic anhydride to generate monoglyceride maleic acid half ester; and finally monoglyceride maleic acid half ester is mixed with styrene to obtain the novel unsaturated polyester resin. The synthesized resin has advantages of unique structure, high rigidity, high hardness, high temperature resistance, nonflammability and good dimensional stability of a product. before curing, the resin is a viscous liquid with low molecular weight; and during molding process, the resin can flow, has plasticity, can be made into a certain shape and simultaneously undergoes a chemical reaction to be cross-linked and cured. The resin is suitable for various composite material molding technologies such as mould pressing, lamination, transfer molding, casting and the like.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a method for preparing novel unsaturated polyester resins from renewable waste cooking oil. Background technique [0002] In recent years, synthetic resin has become the synthetic material with the highest output and the largest demand, among which unsaturated polyester resin is the most used resin. At present, unsaturated polyester resin is mainly to improve the resin formula, find new synthetic raw materials and new preparation methods, produce resin with new structure and function, and broaden its application field. However, due to the increasing depletion of petroleum resources and the rise in crude oil prices, the cost of resins is relatively high, and due to the ubiquitous refractory characteristics of petroleum-based polymer materials, it has caused huge pollution to the environment. Therefore, it is necessary to seek efficient, cheap and renewable The preparation of gre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08G63/52C08G63/78
Inventor 刘晓洪曾登葛翔
Owner WUHAN TEXTILE UNIV
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