High-viscosity curing agent composition
A composition and curing agent technology, applied in the field of high-viscosity curing agent composition, can solve problems such as insufficient bonding strength, loss of market significance, high cost, etc.
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[0016] I. the synthesis of formula 1 compound
[0017]
Synthetic example
[0018] The compound described in Formula 1 is a known compound, which can be purchased commercially or prepared synthetically by those skilled in the art. Its typical but non-limiting synthetic examples are as follows:
[0019] Prepare solution A prepared by dissolving 19.42 g of 1,3-bis(isocyanatomethyl)cyclohexane in 100 g of isopropanol, and solution B prepared by dissolving 25.3 g of hydrazine in 100 g of isopropanol . While stirring the solution B in the three-necked flask while controlling it at 30° C., the solution A was added dropwise at a rate of 1.4 g / min. After the dropwise addition of the solution A was completed, the reaction solution was measured with a Fourier transform infrared spectrophotometer, and it was confirmed that the 2250 cm from the isocyanate group -1 The reaction was terminated after the disappearance of the nearby peak. It reacted so that hydrazine may be 5 mol (1:5 by molar ratio) with respect to 1 mol of 1, 3- bis (isocyanatomethyl) cyclohexan...
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