93717-58-9

Basic information

• Product Name: bis(4-hydroxyphenyl)-cyanomethane
• Synonyms: bis(4-hydroxyphenyl)-cyanomethane
• CAS NO: 93717-58-9
• Molecular Weight: 225.247
• Mol File: 93717-58-9.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: bis(4-hydroxyphenyl)-cyanomethane(CAS DataBase Reference)
• NIST Chemistry Reference: bis(4-hydroxyphenyl)-cyanomethane(93717-58-9)
• EPA Substance Registry System: bis(4-hydroxyphenyl)-cyanomethane(93717-58-9)

Safety Data

• Hazardous Substances Data: 93717-58-9(Hazardous Substances Data)

Upstream product

• 13093-65-7 2-hydroxy2-(4-hydroxyphenyl)acetonitrile 
• 108-95-2 phenol 

Downstream Products

• 92245-42-6 4.4'-Dihydroxy-diphenyl-acetamidin 

Relevant articles and documents

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.

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.

Polyetherimide bisphenol compositions

Polyetherimide bisphenols and bischloroformates are prepared by the reaction of dianhydrides or certain bisimides with aminophenols or mixtures thereof with diamines. They are useful as intermediates for the preparation of cyclic heterocarbonates, which may in turn be converted to linear copolycarbonates. The bisphenols can also be converted to salts which react with cyclic polycarbonate oligomers to form block copolyetherimidecarbonates.