1571-75-1

Usage

Uses

Used in Analytical Chemistry:
4,4'-(1-Phenylethylidene) biphenol is used as an analytical reference standard for the quantification of the analyte in different samples. It plays a crucial role in ensuring accurate measurements and analysis.
Used in Urine Sample Analysis:
In the medical and pharmaceutical industry, 4,4'-(1-Phenylethylidene) biphenol is used as an analytical reference standard for the quantification of the analyte in urine samples. This application aids in the detection and monitoring of potential health issues related to exposure to endocrine disruptors.
Used in Beverage Analysis:
4,4'-(1-Phenylethylidene) biphenol is also utilized in the beverage industry for the quantification of the analyte in various drinks. This helps ensure the safety and quality of beverages by detecting the presence of potentially harmful substances.
Used in Wastewater Analysis:
In the environmental sector, 4,4'-(1-Phenylethylidene) biphenol is employed as an analytical reference standard for the quantification of the analyte in wastewaters. This application is vital for monitoring and managing the environmental impact of industrial processes and ensuring the safety of water resources.
Used in Liquid Chromatography-tandem Mass Spectrometry (LC-MS/MS):
4,4'-(1-Phenylethylidene) biphenol is used as an analytical reference standard in LC-MS/MS, a powerful analytical technique that combines the separation capabilities of liquid chromatography with the specificity and sensitivity of tandem mass spectrometry. This application is crucial for the accurate detection and quantification of target analytes in complex samples.
Used in Gas-Chromatography Coupled to Mass Spectrometry (GC-MS):
4,4'-(1-Phenylethylidene) biphenol is also used as an analytical reference standard in GC-MS, a widely employed analytical technique that combines gas chromatography with mass spectrometry. This application is essential for the identification and quantification of volatile and semi-volatile compounds in various samples, including wastewaters.

Upstream product

• 98-86-2 acetophenone 
• 108-95-2 phenol 

Downstream Products

• 120346-43-2 1-(4-hydroxyphenyl)-1-phenylethane 
• 53350-99-5 1,1-bis-(3,5-dibromo-4-hydroxy-phenyl)-1-phenyl-ethane 
• 21886-64-6 1,1-bis-(4-benzoyloxy-phenyl)-1-phenyl-ethane 
• 108-95-2 phenol 
• 75616-06-7 1,1-bis-(4-acetoxy-phenyl)-1-phenyl-ethane 
• 17743-52-1 1-Phenyl-1,1-bis-<4-methoxy-phenyl>-aethan 
• 854197-27-6 C₂₆H₃₄O₂Si₂ 
• 69563-81-1 1,1-bis-(4-acetoxy-3,5-dibromo-phenyl)-1-phenyl-ethane 
• 2316-50-9 2-bromo-4,6-dinitrophenol 
• 94676-11-6 1-acetoxy-4-(1-phenyl-ethyl)-benzene 
• 904679-39-6 1,1-bis-(4-chloroacetoxyphenyl)-1-phenylethane 
• 1026246-11-6 2,2'-dimethylaminemethylene-4,4'-(1-α-methylbenzylidene)bisphenol 
• 1020725-46-5 C₃₀H₂₄N₂O₂ 
• 1020725-51-2 C₂₈H₂₂N₄O₂ 

Relevant academic research and scientific papers

COLOR DEVELOPING COMPOSITION CONTAINING MOLECULAR COMPOUND, AND RECORDING MATERIAL

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.

NOVEL DIAZONAPHTHOQUINONESULFONIC ACID BISPHENOL DERIVATIVE USEFUL IN PHOTO LITHOGRAPHIC SUB MICRON PATTERNING AND A PROCESS FOR PREPARATION THEREOF

The present invention provides novel diazonaphthoquinonesulfonic acid bisphenol derivatives. More particularly, the present invention relates to photo restive coating comprising alkali-soluble resin, a photoactive compound and a surfactant. The photoresist film prepared has less then one micron. The photoactive compound is soluble or swellable in aqueous alkaline solutions and is diazonaphthoquinonesulfonic bisphenol esters of the general formula (A), wherein DNQ represents a 2-Diazo-1-naphthoquinone-4-sulfonyl, 2-Diazo-1-naphthoquinone-5-sulfonyl, 1-Diazo-2-naphthoquinone-4-sulfonyl groups and R1 R1 represents an alkyl, aryl and substituted aryl groups. The invention also provides a process for coating and imaging the light-sensitive composition.

NOVEL DIAZONAPHTHOQUINONESULFONIC ACID BISPHENOL DERIVATIVE USEFUL IN PHOTO LITHOGRAPHIC SUB MICRON PATTERNING AND A PROCESS FOR PREPARATION THEREOF

The present invention provides novel diazonaphthoquinonesulfonic acid bisphenol derivatives. More particularly, the present invention relates to photo restive coating comprising alkali-soluble resin, a photoactive compound and a surfactant. The photoresist film prepared has less then one micron.The photoactive compound is soluble or swellable in aqueous alkaline solutions and is diazonaphthoquinonesulfonic bisphenol esters of the general formula (A), wherein DNQ represents a 2-Diazo-1-naphthoquinone-4-sulfonyl, 2-Diazo-1- naphthoquinone-5-sulfonyl, 1-Diazo-2-naphthoquinone-4-sulfonyl groups and R1 R1 represents an alkyl, aryl and substituted aryl groups. The invention also provides a process for coating and imaging the light-sensitive composition.

Polymer electrolyte and process for producing the same

A polymer electrolyte having, in a main chain, a structural unit represented by the following formula (1):-[Ar1-(SO2-N-(X+)-SO2-Ar2)m-SO2-N-(X+)-SO2-Ar1-O]- wherein Ar1 and Ar2 independently represent a divalent aromatic groups, m represents an integer of 0 to 3, and X+ represents an ion selected from hydrogen ion, an alkali metal ion and ammonium ion, which is excellent in proton conductivity, thermal resistance and strength. The polymer electrolyte is soluble in solvents and has excellent film forming property and recycling efficiency.

Salicylic acid derivatives

The heat-sensitive recording material disclosed comprises a colorless or pale colored dyestuff precursor, one or more salicylic acid derivative of the formula (1) or metal salt of the derivative and an aliphatic amide compound having 18?60 carbon atoms in molecular structure, and is excellent in thermal response and preservation stability of white portions and images. STR1 wherein X1 and X2 are a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an aralkyl group or an aryl group, Y1 and Y2 are an oxygen atom or a sulfur atom, R1 is a hydrogen atom, an alkyl group, an aralkyl group or an aryl group, and R2 is an alkyl group, an alkenyl group, an aralkyl group or an aryl group.

Processes for producing aromatic polycarbonate oligomer and aromatic polycarbonate

A process for producing continuously an aromatic polycarbonate oligomer by reacting an aromatic dihydroxy compound and an alkali metal base or an alkaline earth metal base with a carbonyl halide compound comprises: (1) feeding continuously to a tank reactor an aromatic dihydroxy compound, water, a molecular weight controlling agent, a polymerization catalyst, a carbonyl halide compound, and an organic solvent, and an alkali metal base or an alkaline earth metal base in an amount of 1.15-1.6 equivalents based on the aromatic dihydroxy compound, (2) carrying out the reaction with a residence time as defined by the following formula, where X is an amount of the polymerization catalyst in terms of mole % based on the amount of mole of the aromatic dihydroxy compound fed per unit time, and Y is a residence time (min.), and (3) continuously withdrawing the reaction mixture from the tank reactor to obtain an aromatic polycarbonate oligomer having a number average molecular weight of 1,000-10,000. An aromatic polycarbonate is produced by polycondensation of the aromatic polycarbonate oligomer.

Method for preparing aromatic bischloroformate compositions

Bischloroformate oligomer compositions are prepared by passing phosgene into a heterogeneous aqueous-organic mixture containing at least one dihydroxyaromatic compound, with simultaneous introduction of a base at a rate to maintain a specific pH range and to produce a specific volume ratio of aqueous to organic phase. By this method, it is possible to employ a minimum amount of phosgene. The reaction may be conducted batchwise or continuously. The bischloroformate composition may be employed for the preparation of cyclic polycarbonate oligomers or linear polycarbonate, and linear polycarbonate formation may be integrated with bischloroformate composition formation in a batch or continuous process.

Bischoloroformate preparation method with phosgene removal and monochloroformate conversion

Aqueous bischloroformates are prepared by the reaction of a dihydroxyaromatic compound (e.g., bisphenol A) with phosgene in a substantially inert organic liquid (e.g., methylene chloride) and in the presence of an aqueous alkali metal or alkaline earth metal base, at a pH below about 8. After all solid dihydroxyaromatic compound has been consumed, the pH is raised to a higher value in the range of about 7-12, preferably 9-11, and maintained in said range until a major proportion of the unreacted phosgene has been hydrolyzed. At the same time, any monochloroformate in the product may be converted to bischloroformate.

Trialkylsilyloxy-1,1-diphenyl ethylenes and polymers produced therewith

Trialkylsilyloxy-1,1-diphenyl ethylenes corresponding to general formula I, new polymers produced therewith terminated by aryl trialkylsilyl ether groups or by phenolic hydroxyl groups and a process for the production of these polymers by anionic polymeri

Cyclic monocarbonate bishaloformates

Cyclic monocarbonate bischloroformates are prepared by the reaction of a carbonyl halide such as phosgene with a bridged substituted resorcinol or hydroquinone such as bis(2,4-dihydroxy-3-methylphenyl)methane or bis(2,5-dihydroxy-3,4,6-trimethylphenyl)methane in the presence of aqueous alkali metal hydroxide. The cyclic monocarbonate bischloroformates may be used for the preparation of linear or cyclic polycarbonates containing cyclic carbonate structural units, which may in turn be converted to crosslinked polycarbonates.