## Abstract A modified benzyloxycarbonyl (BOC) protective group, the 3,5βdiβ__tert__βbutyl substituted BOC (3,5βtBBOC) group, was introduced to the stepwise synthesis of molecularly uniform oligourethanes based on 1,5βnaphthalene diisocyanate (NDI) and 1,4βbutanediol (BDO) for the protection of the
Thermal stability of molecularly uniform oligourethanes based on 1,5-naphthalene diisocyanate and 1,4-butanediol
β Scribed by Festel, Gunter ;Eisenbach, Claus D.
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 117 KB
- Volume
- 256
- Category
- Article
- ISSN
- 0003-3146
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## Abstract The synthesis of molecularly uniform and isomerically pure oligourethanes is described. The compounds are models for the hard segments in polyurethane elastomers based on the aliphatic __trans,trans__β4,4β²βmethylenebis(cyclohexylisocyanate) (ttHMDI)/butanediol system. The thermostabilit
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