A series of segmented polyurethanes (SPUs), based on hexamethylene diisocyanate (HDI) and polytetramethylene glycol (PTMG) as soft segments and then extended with alkylene di(4-hydroxybenzoate), HB as hard segments, were synthesized in this study. The effect of the number of methylene units in HB (f
Synthesis and Characterization of New Aromatic Silicone Diols
โ Scribed by Idrissi, Abderrahman El; Elayyachy, Mohamed; Ouslime, Asmae; Elmaakchaoui, Aziddin; Radi, Smaail
- Book ID
- 120160108
- Publisher
- Taylor and Francis Group
- Year
- 2008
- Tongue
- English
- Weight
- 233 KB
- Volume
- 183
- Category
- Article
- ISSN
- 1042-6507
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Rigid aromatic polyesters containing alkoxy or phenyl-substituted oligophenyls were prepared. Soluble polymers were obtained also in cases where phenyl-substituted quinquephenyl diols were combined with asymmetric phenyl-substituted terephthalic acid. The synthesized polyesters were characterized by
A series of new wholly aromatic polyesters was synthesized by melt polycondensation of 1-phenyl-2,6-naphthalenedicarboxylic acid (PNDA) and &acetates of various aromatic diols. The aromatic diols studied are hydroquinone (HQ), methylhydroquinone (MHQ), phenylhydroquinone (PHQ), (a-phenylisopropy1)hy