Ring-opening polymerization of various oxirane derivatives using organotin phosphate condensate; Selective
synthesis of the polyether containing oxirane ring in the side chain |
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Authors: | Naruhito Iwasa Katsuhito Miura Shinji Kan Yoshiro Furukawa |
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Affiliation: | (1) Research Laboratories, Daiso Co., Ltd., 9 Otakasu, 660-0842 Amagasaki, Hyogo, Japan |
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Abstract: | Ring-opening polymerization (ROP) of various oxirane derivatives of the type, 2,2-R1,R2-CCH2O
R1 = H (1), CH3 (2); R2 = CH3 (a),
CH2Cl (b), CH2OCH3
(c)], using organotin phosphate (Bu2SnO-Bu3PO4)
condensate has been explored. The ROP of monosubstituted oxiranes (1a-c) afforded ring-opened polymers in high yields (1a,
1c = 99% and 1b = 69%); the resultant
polymers from monomers 1a and 1b possessed
high molecular weights (Mn = 9.49 × 104, 10.60
× 104, respectively). In contrast, both polymer yields and molecular
weights for resultant polymers in the polymerization of disubstituted oxiranes (2a-c) were considerably lower than those in the polymerization of monosubstituted
monomers (1a-c). ROP of glycidyl 2-methylglycidyl
ether (3) possessing two oxirane groups with different reactivity was
thus conducted by organotin catalyst; the high molecular weight polyether (Mn
= 9.17 × 104) containing oxirane ring in the side chain has successfully
been obtained in moderate yield. |
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Keywords: | |
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