Lipase-catalyzed ring-opening polymerization and copolymerization of cyclic dicarbonates
β Scribed by Shuhei Namekawa; Hiroshi Uyama; Shiro Kobayashi; Hans R. Kricheldorf
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 57 KB
- Volume
- 201
- Category
- Article
- ISSN
- 1022-1352
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π SIMILAR VOLUMES
Lipase-catalyzed ring-opening bulk polymerizations of 3(S)-isopropylmorpholine-2,5-dione (IPMD) were investigated. Selected commercial lipases were screened as catalysts for IPMD polymerization at 100 8C. Polymerizations catalyzed with lipases PPL, PS, and CR result in IPMD conversions of about 50%,
The cationic ring-opening polymerization of six-membered cyclic pseudoureas, 2-(1-pyrrolidinyl)-( 2a) and 2-morpholino-5,6-dihydro-4H-1,3-oxazine ( 2b), was examined, which proceeded in two different ways, depending on the nature of initiator. The polymerization of 2 with methyl p-toluenesulfonate o