Cross-linking agent for bio-based adhesive and preparation method of cross-linking agent
A kind of adhesive, bio-based technology, applied in the field of crosslinking agent and its preparation, to achieve the effect of good hot water resistance adhesive performance
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Embodiment 1
[0024] The cross-linking agent of the present embodiment is to take melamine, adipic acid, diethylenetriamine, epichlorohydrin as main raw materials, by including the following major steps:
[0025] (1) Mix 100 g of melamine and 350 g of adipic acid, heat to 180° C. and react for 120 min, and cool to room temperature to obtain polycondensed tribasic acid;
[0026] (2) Add 200g of diethylenetriamine to the above-mentioned tribasic acid, heat to 170°C and react for 120min, and cool to 60°C to obtain an acid amine polycondensation intermediate;
[0027] (3) Add 800g of water to the above acid amine polycondensation intermediate until dissolved, adjust the pH to 8 with ammonia water, add 190g of epichlorohydrin dropwise at 60°C for 240min, and cool to room temperature to obtain a crosslinking agent solution.
Embodiment 2
[0029] With embodiment 1, wherein replace 200g diethylene triamine with 280g triethylene tetramine.
Embodiment 3
[0031] With embodiment 1, wherein replace 350 gram adipic acids with 250 g malonic acid.
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