Synthesis of polyurethans with regularly recurring unsaturated side chains
✍ Scribed by K. M. Aleev; S. N. Ushakov
- Book ID
- 112422066
- Publisher
- Springer
- Year
- 1964
- Tongue
- English
- Weight
- 223 KB
- Volume
- 13
- Category
- Article
- ISSN
- 1573-9171
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## Abstract Two side‐chain polyurethanes, HMDI‐PU (2a) and TDI‐PU (2b), have been synthesized from 2,2′‐iminodiethanol (“diethanolamine”) __N__‐substituted with a nitrostilbene group on a hexamethylene spacer with, respectively, hexamethylene diisocyanate and 1‐methyl‐2,4‐phenylene diisocyanate (“2
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A series of liquid crystal a-[bis(2-hydroxyethyl)amino]-v-(4-nitroazobenzene-4-oxy)alkanes (Cn-diol) with different alkyl chain length has been synthesized. All Cn-diols exhibit a smectic phase that has been identified by means of polarizing microscopy and differential scanning calorimetry. These co