Polythiol epoxy resin curing agent and preparation method thereof

The invention relates to a curing agent, particularly a polythiol epoxy resin curing agent and a preparation method thereof. The polythiol epoxy resin curing agent uses cheap and accessible raw materials to greatly lower the cost of the polythiol epoxy resin fast curing agent. The preparation method...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HONG ALE, LIN HUADUAN, ZOU YOUSI, PU JUEWEN, SHANG MINGYI, HUANG YING, ZHENG YANQING, LV GENGMIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	The invention relates to a curing agent, particularly a polythiol epoxy resin curing agent and a preparation method thereof. The polythiol epoxy resin curing agent uses cheap and accessible raw materials to greatly lower the cost of the polythiol epoxy resin fast curing agent. The preparation method comprises the following steps: after esterifying sorbitol, thioglycollic acid, p-toluenesulfonic acid and methylbenzene, distilling out the liquid under reduced pressure at uniform speed by controlling the temperature and vacuum degree until no liquid is distilled out, and adding epoxy resin to carry out chain extending reaction, thereby obtaining the polythiol epoxy resin curing agent. The polythiol epoxy resin curing agent is a colorless or light yellow transparent liquid poly-sulfhydryl epoxy grafted compound with certain viscosity, the pH value is 2-4, and the density is 1.2-1.3 g/cm .