In:
Journal of Applied Polymer Science, Wiley, Vol. 134, No. 24 ( 2017-06-20)
Abstract:
Dimethyl carbonate (DMC) is an environmentally benign chemical currently produced using CO 2 . Using the conventional Dean–Stark apparatus, a method was developed for the effective and selective removal of the methanol generated in the transesterification of DMC with alcohol. Using this device, various diols (HO‐A‐OH; A = (CH 2 ) 4 , (CH 2 ) 2 O(CH 2 ) 2 , CH 2 C 6 H 10 CH 2 , and CH 2 C 6 H 4 CH 2 ) were converted to mixtures of the corresponding MeOC(O)[O‐A‐OC(O)]OMe and MeOC(O)[O‐A‐OC(O)] 2 OMe. Dialkyl carbonates such as dibutyl carbonate, dibenzyl carbonate, and diallyl carbonate were also efficiently prepared from the corresponding alcohols using this device. The compound prepared from 1,4‐butanediol, MeOC(O)[O(CH 2 ) 4 OC(O)] 1.5 OMe, was subjected to polycondensation with HO(CH 2 ) 4 [O 2 CC 6 H 4 CO 2 (CH 2 ) 4 ] 1.5 OH or HO(CH 2 ) 4 [O 2 CC 6 H 4 CO 2 (CH 2 ) 4 ] 1.8 OH, which directly was prepared from terephthalic acid and 1,4‐butanediol. The polycondensation afforded high‐molecular‐weight poly(1,4‐butylene carbonate‐ co ‐terephthalate)s (PBCTs) with M w of 80–270 kDa and 0.40–0.46 terephthalate mole fractions. PBCTs are attractive materials with potential biodegradability and LDPE‐like thermal properties. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44951.
Type of Medium:
Online Resource
ISSN:
0021-8995
,
1097-4628
Language:
English
Publisher:
Wiley
Publication Date:
2017
detail.hit.zdb_id:
1491105-X
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