5397-34-2Relevant articles and documents
Separation of 2,4′- and 4,4′-dihydroxydiphenyl sulfones
Belyaev,Vershinin,Gromov,Kuznetsov
, p. 425 - 429 (2006)
To develop a procedure for separating 2,4′- and 4,4′- dihydroxydiphenyl sulfones, their acidity and solubility in water were studied. Pleiades Publishing, Inc., 2006.
Liquid-crystal aromatic polyesters containing azo and sulfone units
Qiu, Ming Yan,Niu, Yong Sheng,Yu, You Zhu,Guo, Yu Hua
, p. 7759 - 7762 (2015/02/02)
Two novel aromatic polyesters containing azo and sulfone units were synthesized by poly-condensation of 4,4′-azobenzene-dicarbonyl chloride with dihydroxydiphenyl sulfones at low temperature. The synthesized polymers exhibited good solubility, inherent viscosity (reaches 1.05 dL g-1), high glass transition temperature (above 200 °C) and thermal stability (≤ 5 % weight loss at 348 °C), which were characterized by Fourier transform infrared spectroscopy. The liquid crystalline and photoisomerization properties were observed by polarizing optical microscope and an ultraviolet-visible spectrophotometer.
COLOR DEVELOPING COMPOSITION CONTAINING MOLECULAR COMPOUND, AND RECORDING MATERIAL
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, (2011/06/19)
Provided is a color-developing composition containing a molecular compound which has as a component compound a compound represented by formula (I) [wherein Y represents a C1-C12 hydrocarbon group which is chained or branched and saturated or unsaturated, or a C1-C8 hydrocarbon group which is chained or branched, saturated or unsaturated and has an ether or thioether bond; R1, R2, R3 and R4 each independently represent a C1-C6 alkyl group or C2-C6 alkenyl group; n, p, q and r each represents any integer of 0 to 4; and m represents any integer of 0 to 2]. Also provided is a recording material with a sufficient color-forming sensitivity, superior storage stability, and especially with an extremely little background fogging in a heat resistance test.