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36. Synthetic Polymers - 4! 3부

36. Synthetic Polymers / Step-Growth Polymers: Polyurethane Mechanism / 문제 7

문제 7

Which mixture ratio is commonly used for 2,4 and 2,6 toluene diisocyanate in polyurethane production?

A

60:40

B

70:30

C

50:50

D

80:20