98539-29-8

Upstream product

• 2345-34-8 4-acetyloxy-benzoic acid 
• 95-71-6 2-methylbenzene-1,4-diol 
• 99-96-7 4-hydroxy-benzoic acid 
• 27914-73-4 4-acetoxybenzoyl chloride 

Downstream Products

• 119959-84-1 2-methyl-1,4-phenylene bis(4-hydroxybenzoate) 

Relevant academic research and scientific papers

Polymerizable compound, the photopolymerizable composition and the optical anisotropic

PURPOSE: A polymerizable naphthoic acid phenyl compound is provided to have high reflection anisotropy and high storage stability and high orientation. CONSTITUTION: A polymerizable naphthoic acid phenyl compound is represented by chemical formula 1. In chemical formula 1, one of M^1-M4 is a fluorine atom, a chlorine atom, a cyno group, a nitro group, a C1-7 alkyl group, a C1-7 alkoxy group, or a C1-7 alkanoyl group. L^1-L^6 is hydrogen, fluorine or chloride. A polymerizable liquid composition comprises the polymerizable compound. The polymer is obtained by polymerizing the polymerizable liquid compositions. An optical anisotropic object uses the polymer.

Synthesis and characterization of Triad based rigid mesogenic diols derived from Hydroquinone and 4-hydroxybenzoic acid

Triad based rigid mesogenic diols have been synthesized by four step synthesis method using protection-deprotecti method. Hydroquinone and 4-hydroxy benzoic acid have been used as starting materials. Synthesized diols have be characterized by IR, 1H and 13C NMR, and mass spectroscopic methods. Thermal properties have been determined b thermo gravimetric analysis method and degree of crystallinity have been measured by wide angle X-ray techniqu Substituted hydroquinones (methyl and chloro) have been used to study the effect of substitution on physical and therm properties. Synthesis of rigid mesogenic diol monomer using p-hydroxy benzoic acid and hydroquinone is reported, which a facile route. Hydrolysis of diacetate derivatives of rigid mesogenic diols is performed in good yields, even though tw types of ester groups present in the same moiety, aromatic and aliphatic. The experimental results reveal that hydroquino based rigid triad mesogenic diol have high thermal stability and degree of crystallinity as compared to methyl- and chlor substituted rigid triad mesogenic diols.