引用本文:
Yan Qing LIAN, Ming Qi LI, Qi Xiang ZHOU, De Shan LIU. Synthesis of Bis(4'-hydroxyphenyl)-toluene-2, 4-diurethane for Main Chain Liquid Crystalline Poly(urethane-ester)s[J]. Chinese Chemical Letters,
1998, 9(5): 439-442.
Citation: Yan Qing LIAN, Ming Qi LI, Qi Xiang ZHOU, De Shan LIU. Synthesis of Bis(4'-hydroxyphenyl)-toluene-2, 4-diurethane for Main Chain Liquid Crystalline Poly(urethane-ester)s[J]. Chinese Chemical Letters, 1998, 9(5): 439-442.
Citation: Yan Qing LIAN, Ming Qi LI, Qi Xiang ZHOU, De Shan LIU. Synthesis of Bis(4'-hydroxyphenyl)-toluene-2, 4-diurethane for Main Chain Liquid Crystalline Poly(urethane-ester)s[J]. Chinese Chemical Letters, 1998, 9(5): 439-442.
Synthesis of Bis(4'-hydroxyphenyl)-toluene-2, 4-diurethane for Main Chain Liquid Crystalline Poly(urethane-ester)s
摘要:
A new methodology was advanced that mesogenic cores appeared after the formation of urethane groups and during the monomer-to-polymer transition. A new diphenol monomer, bis(4'-hydroxy-phenyl)-toluene-2,4-diurethane (BHPTU), was obtained by the reaction of 2,4-tolulene diisocyanate with hydroquinone in dioxane or N,N-dimethyl-acetamide. The reaction process was monitored by FTIR, and the product was investigated by 1HNMR and elemental analysis (EA). A liquid crystalline poly(urethane-ester) was obtained using the BHPTU monomer.
English
Synthesis of Bis(4'-hydroxyphenyl)-toluene-2, 4-diurethane for Main Chain Liquid Crystalline Poly(urethane-ester)s
Abstract:
A new methodology was advanced that mesogenic cores appeared after the formation of urethane groups and during the monomer-to-polymer transition. A new diphenol monomer, bis(4'-hydroxy-phenyl)-toluene-2,4-diurethane (BHPTU), was obtained by the reaction of 2,4-tolulene diisocyanate with hydroquinone in dioxane or N,N-dimethyl-acetamide. The reaction process was monitored by FTIR, and the product was investigated by 1HNMR and elemental analysis (EA). A liquid crystalline poly(urethane-ester) was obtained using the BHPTU monomer.
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Key words:
- liquid crystalline polymer
- / poly(urethane-ester)
- / synthesis
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