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Preparation method of maleic anhydride modified epoxy phosphate EMP

A technology of epoxy phosphate ester and preparation method, which is applied in the field of preparation of maleic anhydride modified epoxy phosphate ester EMP, can solve the problems of high cost, unreasonable preparation method, inconvenient preparation, etc., and achieve low cost and easy manufacturing operation Convenience and high purification accuracy

Inactive Publication Date: 2014-12-10
HUBEI JIACAI NEW MATERIALS
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Problems solved by technology

[0002] The traditional maleic anhydride-modified epoxy phosphate EMP preparation method is unreasonable, inconvenient and costly

Method used

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Embodiment Construction

[0006] A preparation method of maleic anhydride-modified epoxy phosphate EMP with high purification precision and convenient operation comprises the following steps:

[0007] 1. Reaction of n-butanol and MA to generate maleic anhydride monoester: Put measured n-butanol, MA and tetrabutylammonium bromide into a four-necked bottle with stirrer and thermometer, slowly heat up to 60-80°C, and In this temperature range, the reaction was incubated for 3 hours.

[0008] 2. Preparation of maleic anhydride-modified epoxy resin: add a measured amount of E-51 epoxy resin to the above-mentioned monoester, heat up to 110-130°C, keep warm for about 3 hours, take a sample to measure the acid value until the acid value is less than 5mg Stop the reaction when KOH / g is reached, and lower the temperature to below 80°C for later use.

[0009] 3. Preparation of EMP: Add metered phosphoric acid to the above-mentioned maleic anhydride modified epoxy resin, react at 60-80°C for 3 hours, then add met...

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Abstract

The invention provides a preparation method of maleic anhydride modified epoxy phosphate EMP with high purification precision and convenience in operation. The preparation method comprises the following steps: reacting n-butyl alcohol and MA (maleic anhydride) to prepare a maleic anhydride monoester: putting measured n-butyl alcohol, MA and tetrabutylammonium bromide into a four-neck bottle with a stirrer and a temperature gauge, slowly heating to 60-80 DEG C, and performing heat-preservation reaction for 3 hours in the temperature range; 2, preparing maleic anhydride modified epoxy resin: adding measured E-51 epoxy resin into the monoester, heating to 110-130 DEG C, performing heat-preservation reaction for about 3 hours, sampling and measuring an acid value, stopping reaction until the acid value is less than 5mg KOH / g, and cooling to less than 80 DEG C for later use; 3, preparing EMP: adding measured phosphoric acid into the maleic anhydride modified epoxy resin, reacting for 3 hours at 60-80 DEG C, then adding measured water, reacting for 2 hours at 80-100 DEG C, and hydrolyzing phosphate diester or phosphotriester in EMP into phosphate monoester. The preparation method of maleic anhydride modified epoxy phosphate EMP provided by the invention is high in purification precision, is convenient to manufacture and operate, and is low in cost.

Description

technical field [0001] The invention relates to a preparation method of maleic anhydride-modified epoxy phosphate EMP, in particular to a preparation method of maleic anhydride-modified epoxy phosphate EMP with convenient preparation and low cost. Background technique [0002] The traditional preparation method of maleic anhydride-modified epoxy phosphate EMP is unreasonable, inconvenient and costly. Contents of the invention [0003] In order to solve the above problems, the present invention provides a preparation method of maleic anhydride-modified epoxy phosphate EMP with high purification precision and convenient preparation. [0004] A kind of preparation method of maleic anhydride modified epoxy phosphate EMP that realizes the purpose of the present invention is high in purification accuracy and easy to operate, comprises the following steps: 1, n-butanol and MA react to generate maleic anhydride monoester: the n-butyl alcohol of metering Alcohol, MA, and tetrabuty...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/16C08G59/14
Inventor 徐长权
Owner HUBEI JIACAI NEW MATERIALS
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