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• In the presence of a high concent
• In the presence of a high concentration of alcohol (methanol) ring opening of epoxy groups with hydroxyls result in the formation of ether and secondary hydroxyls but polymerization is limited to low oligomers.
• Such reaction is used to make polyols for polyurethanes.
• In the absence of hydroxyl groups the linear structures are formed only from the catalyst (X-Y).
• Such reaction is used to make polyols for polyurethanes.
• In the absence of hydroxyl groups the linear structures are formed only from the catalyst (X-Y).
0/5000
• In the presence of a high concentration of alcohol (methanol) ring opening of epoxy groups with hydroxyls result in the formation of ether and secondary hydroxyls but polymerization is limited to low oligomers.
• Such reaction is used to make polyols for polyurethanes.
• In the absence of hydroxyl groups the linear structures are formed only from the catalyst (X-Y).
• Such reaction is used to make polyols for polyurethanes.
• In the absence of hydroxyl groups the linear structures are formed only from the catalyst (X-Y).
Sedang diterjemahkan, harap tunggu..
• Dengan adanya konsentrasi tinggi alkohol (metanol) pembukaan cincin kelompok epoksi dengan hidroksil menghasilkan pembentukan eter dan hidroksil sekunder tapi polimerisasi terbatas oligomer rendah.
• Reaksi tersebut digunakan untuk membuat poliol untuk poliuretan.
• Dalam tidak adanya gugus hidroksil struktur linier terbentuk hanya dari katalis (XY).
• Reaksi tersebut digunakan untuk membuat poliol untuk poliuretan.
• Dalam tidak adanya gugus hidroksil struktur linier terbentuk hanya dari katalis (XY).
Sedang diterjemahkan, harap tunggu..
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