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Preparation method of anionic rosin trimethylolpropane ester emulsion

A technology of rosin trimethylolpropane ester and trimethylolpropane, which is applied in the field of preparation of anionic rosin trimethylolpropane ester emulsion, can solve problems such as easy coagulation, large colloidal particles, and large foaming, and achieves Low foaming, stable coating, and high tolerance

Active Publication Date: 2013-05-22
FINJET CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for preparing an anionic rosin trimethylolpropane ester emulsion, which can solve the problem that the existing rosin emulsion cannot take into account various performance indicators, has large foaming, has little tolerance to hard water and temperature, is easy to coagulate, and has colloidal particles. Large, unstable coating problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1—

[0015] Its production steps are:

[0016] A. Add 5400 kilograms of rosin, 648 kilograms of trimethylolpropane and 5.4 kilograms of phosphoric acid and zinc oxide as esterification catalysts in the reactor, mix at 180 ° C under the protection of nitrogen, then heat up to 210 ° C, and keep the temperature for 2 After 2 hours, heat up to 250°C-255°C, and keep warm for 5-8 hours for esterification to obtain rosin trimethylolpropane ester. After 5 hours of heat preservation, check the resin Whether the color deepens and detects the softening point and acid value of the resin; if the color does not deepen, the closer the softening point and acid value are to the center of the control range, the better the rosin trimethylolpropane resin;

[0017] B. Prepare 50% aqueous sodium hydroxide solution and 30-50% styrene-acrylic acid copolymer as a polymer surfactant. Under stirring conditions, use sodium hydroxide aqueous solution and styrene-acrylate Add styrene-acrylic acid salt copolyme...

Embodiment 2

[0020] Its production steps are:

[0021] A, add 5400 kilograms of rosin, 864 kilograms of trimethylolpropane and 13.5 kilograms of calcium hydroxide and magnesium oxide as an esterification catalyst in the reactor, mix at 180 ° C under the protection of nitrogen, then heat up to 210 ° C, And keep warm for 2 hours to carry out partial esterification reaction, then heat up to 250°C-255°C after 2 hours, and keep warm for 5-8 hours to carry out esterification reaction, that is, get rosin trimethylolpropane ester, check after 5 hours of heat preservation Whether the color of the resin deepens and detects the softening point and acid value of the resin; if the color does not deepen, the closer the softening point and acid value are to the center of the control range, the better the rosin trimethylolpropane resin;

[0022] B, the sodium hydroxide aqueous solution of preparation content 50% and content are the methacrylic acid polyoxyethylene ether-acrylic acid salt copolymer as macr...

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Abstract

The invention discloses a preparation method of an anionic rosin trimethylolpropane ester emulsion, and relates to the technical field of chemical industry. The preparation method comprises the following steps of: firstly, adding rosin, trimethylolpropane and a catalyst E to a reactor, mixing under the protection of nitrogen, then increasing the temperature, and carrying out esterification reaction twice to obtain rosin trimethylolpropane ester, mixing and reacting a sodium hydroxide aqueous solution of which the content is 50% and an additive R aqueous solution of which the content is 30 to 50%, adjusting the pH value of a mixture of the sodium hydroxide aqueous solution and the additive R aqueous solution by using sodium hydrogen sulfate to obtain an anionic polymer rosin emulsifier, and carrying out reaction on the anionic polymer rosin emulsifier and rosin trimethylolpropane ester, thus obtaining the anionic rosin trimethylolpropane ester emulsion. In comparison with the prior art, the anionic rosin trimethylolpropane ester emulsion is small in colloidal particles, difficult in agglomeration, less in foamability, stable in coating, and capable of keeping a good viscous force while effectively improving the initial viscous force and the stripping strength of an adhesive, and meets customer requirements.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a preparation method of anionic rosin trimethylol propane ester emulsion. Background technique [0002] China's rosin production and rosin deep processing have always occupied a leading position in the world. With the vigorous development of the rosin resin industry, various products of rosin resin have been widely used in adhesives, coatings, papermaking, ink, rubber, batik, food and other industries. However, due to the rapid development of petroleum resin at home and abroad in recent years, and because the source of petroleum resin raw materials is less affected by seasonality and the collection cost is relatively low, petroleum resin has a greater advantage in price, which has impacted rosin. The original market for resins. In recent years, coincident with the downturn of the world economy, the rosin deep-processing industry has been hit to a certain extent. But ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/03C08L93/04C09F1/04C09J193/04
Inventor 叶旗周卓瑜
Owner FINJET CHEM IND LTD
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