반응 #52124

반응 방정식

dibutyl tin diacetate

hydroquinone monomethyl ether

2,6-di-t-butyl-4-methylphenol

2-hydroxypropyl acrylate

TDI

→

urethane acrylate

반응 조건

후처리

1. 1
   기타equipped with a stirring blade
2. 2
   온도generated heat
3. 3
   기타Reaction
4. 4
   기타once the disappearance of NCO absorption
5. 5
   기타had been confirmed via an infrared absorption spectrum
6. 6
   기타the reaction mixture was removed

실험 절차

260 g (2 mol) of 2-hydroxypropyl acrylate (molecular weight 130) was placed in a flask equipped with a stirring blade, and with constant stirring, 174 g (1 mol) of TDI (2,4-tolylene diisocyanate) was added dropwise, with care taken over the generated heat, and the temperature was raised to 70° C. 1 g of dibutyl tin diacetate, 0.2 g of hydroquinone monomethyl ether and 1 g of 2,6-di-t-butyl-4-methylphenol were then added. Reaction was allowed to proceed at this temperature for 7 hours, and once the disappearance of NCO absorption had been confirmed via an infrared absorption spectrum, the reaction mixture was removed, yielding a urethane acrylate (A-X) as the radical polymerizable oligomer (A). The number average molecular weight of the synthesized urethane acrylate (A-X) was 434.

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