2w
RHW
22
24 2
Ethylene di -isocyanate
Ethyline glycoln
Polyurethane rubberCH — CH
||CH(CNO)
OH OHHH O HH
|| ||||
—O————N——O———O—N CC C CC
| ||| ||
H HHH HHp2ITW2@A
2
nCl—Si—Cl
HO 2
HydrolysisHO—Si—ClCH 3CH 3HO 2Dimethyl silicon chloride Unstable—Si—O—CH 3CH 3—Si—O—Si—O—Si—O—CH 3CH 3
Unstable Silicon rubberCH 3CH 3CH 3CH 3CH 3CH 3p2ITW2@A2 2
p2ITW2@A 2
!2 2