期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 32, 期 17, 页码 1352-1356出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201100319
关键词
dispersions; metathesis; polyesters; thermal properties; thermoplastics
Self-metathesis of undecenoic acid with [(PCy3)(2)Cl2Ru=CHPh] (2), followed by exhaustive hydrogenation yielded pure 1,20-eicosanedioic acid (5) (>99%) free of side-products from isomerization. Polycondensation with eicosane-1,20-diol (6), formed by reduction of the diol, yielded polyester 20,20 (T-m=108 degrees C). By comparison, the known ADMET polymerization of undec-10-enyl undec-10-enoate (7), and subsequent exhaustive polymer-analogous hydrogenation yielded a polyester (poly-8) with irregular structure of the ester groups in the polymer chain (-O(C=O)- vs. -C(=O)O-) (T-m=103 degrees C). Hydrogenation of secondary dispersions of poly-7 yielded aqueous dispersions of the long-chain aliphatic polyester poly-8.
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