2081-08-5

Usage

Uses

Used in Plastics Industry:
4,4'-ETHYLIDENEBISPHENOL is used as a monomer for the production of polycarbonate and epoxy resins, which are essential materials in the plastics industry. These resins are known for their durability, heat resistance, and transparency, making them suitable for a wide range of applications, including automotive parts, compact discs, protective eyewear, and food containers.
Used in Coatings Industry:
In the coatings industry, 4,4'-ETHYLIDENEBISPHENOL is used as a component in the formulation of epoxy resins. These resins are valued for their excellent adhesion, chemical resistance, and mechanical properties, making them ideal for use in coatings for various surfaces, such as metal, wood, and concrete.
Used in Electrical and Electronics Industry:
4,4'-ETHYLIDENEBISPHENOL is also utilized in the electrical and electronics industry as a key ingredient in the production of insulating materials and printed circuit boards. The high heat resistance and electrical insulation properties of polycarbonate and epoxy resins make them crucial for various electronic components and devices.
Used in Medical Applications:
In the medical field, 4,4'-ETHYLIDENEBISPHENOL is used in the manufacturing of certain types of medical devices and equipment, such as diagnostic imaging systems and dental materials. The biocompatibility and durability of polycarbonate and epoxy resins make them suitable for use in these applications.
Overall, 4,4'-ETHYLIDENEBISPHENOL plays a significant role in various industries due to its versatile properties and applications in the production of polycarbonate and epoxy resins.

Upstream product

• 74-86-2 acetylene 
• 108-95-2 phenol 
• 4356-69-8 1,1-bis-(4-methoxyphenyl)ethylene 
• 60-29-7 diethyl ether 
• 7664-93-9 sulfuric acid 
• 7732-18-5 water 
• 5031-92-5 1,1-Bis(4-ethoxyphenyl)ethylene 
• 105-57-7 diethyl acetal 
• 51337-22-5 C₂₂H₂₃NO₂ 
• 64-17-5 ethanol 
• 2971-36-0 2,2-bis(p-hydroxyphenyl)-1,1,1-trichloroethane 
• 7646-78-8 tin(IV) chloride 
• 123-63-7 paracetaldehyde 
• 51337-12-3 {4-[1,1-Bis-(4-ethoxy-phenyl)-ethyl]-phenyl}-dimethyl-amine 

Downstream Products

• 123-07-9 4-Ethylphenol 
• 4534-74-1 4-ethylcyclohexanol 
• 100912-17-2 4,4'-ethylidene-bis-cyclohexanol 
• 126369-25-3 4,4'-(ethane-1,1-diyl)bis(2,6-dibromophenol) 
• 102054-11-5 6,6'-dihydroxy-3,3'-ethylidene-di-benzoic acid 
• 108-93-0 cyclohexanol 
• 108-95-2 phenol 
• 19072-87-8 1,1-bis(3,5-di-tert-butyl-4-hydroxyphenyl)ethane 
• 6245-87-0 [1,4]benzoquinone-mono-(4-amino-phenylimine) 
• 1062594-37-9 C₁₄H₁₄O₂*C₄₂H₇₀O₃₅ 
• 2319-61-1 1,1-dicyclohexylethane 
• 92431-75-9 9-Methyl-perhydrofluoren 
• 10543-21-2 1,1-bis(4-methoxyphenyl)ethane 
• 13031-43-1 4-acetyloxyacetophenone 

Relevant academic research and scientific papers

METHOD FOR PRODUCING BISPHENOL COMPOUND

PROBLEM TO BE SOLVED: To provide a method for producing an aldehyde bisphenol compound, which makes it possible to produce a 4,4'-substituted body with significantly high regioselectivity in an efficient and easy manner. SOLUTION: A production method includes producing a bisphenol compound represented by the formula (1) in a state in which at least phenol, heteropoly acid, and a trioxane compound such as paraldehyde coexist. [In formula (1), R1 is a hydrogen atom or a C1-29 monovalent organic group. R2 and R3 each denote a halogen atom or a C1-29 monovalent organic group. a and b each denote an integer of 0-4]. SELECTED DRAWING: None COPYRIGHT: (C)2021,JPOandINPIT

Preparation method for bisphenol E

A preparation method for bisphenol E is disclosed and belongs to the field of preparation methods for bisphenol compounds. The technical problems that a conventional bisphenol E preparation method is complex in operation, toxicity is high and the finished-product purity is low are solved. The method comprises step 1, precipitating a crystal; step 2, washing and drying, so as to obtain a crude product; and step 3, performing rectification. By employing the method, the usage amount of phenol is reduced, reaction time is shortened, the product ratio in the crude product is improved, and the final product bisphenol E purity is 99.9%. In the method, petroleum ether is employed for replacing cyclohexane, thus the cost is reduced, and petroleum ether and ethyl acetate are employed for replacing toluene as a refined solvent, and thus the toxicity is reduced.

Linear free-energy relationship analysis of a catalytic desymmetrization reaction of a diarylmethane-bis(phenol)

(Figure presented) Linear free-energy relationships have been found for enantioselectivity and various steric parameters in an enantioselective desymmetrization of symmetrical bis(phenol) substrates. The potential origin of this observation and the role of different steric parameters are discussed.

MANUFACTURING METHOD FOR POLYCARBONATE

A method for manufacturing polycarbonate by melt-polycondensing bisphenol and carbonic acid diester uses as catalyst an alkali metal compound and/or alkaline earth metal compound (a). The catalyst is added to the bisphenol prior to the melt polycondensation, in an effective amount, i.e., the amount of alkali metal compound and/or alkaline earth metal compound (a) that acts effectively as a catalyst, is contained in said bisphenol, and is controlled to have the same catalytic activity as 1×10?8 to 1×10?6 mole of bisphenol disodium salt per mole of pure bisphenol A. The method conducts the reaction efficiently from the initial stage in a stable manner to obtain polycarbonate with good color, good heat stability and color stability during molding and the like.

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.

Method for manufacturing bisphenol

A method for manufacturing bisphenol by reacting phenols and ketones, characterized (1) in that an alkali metal compound and/or alkaline earth metal compound is added to bisphenol obtained by reacting a phenol and a ketone, and (2) in that the basicity of the bisphenol is adjusted so as to be equivalent to an amount of 1 × 10-8to 1 × 10-6moles of bisphenol as disodium salt with respect to 1 mole of bisphenol provides a bisphenol in which there is no residue of the organic catalysts ordinarily used in manufacturing bisphenol, so that byproducts are not produced during purification, allowing bisphenol with outstanding color tone, thermal resistance, etc., to be obtained.

Process for the purification of bisphenols and preparation of polycarbonates therefrom

A phenol and a ketone are reacted to form bisphenol, and the liquid bisphenol obtained or a mixed solution of said solution and a phenol is filtered through a calcined metal filter to obtain bisphenol which makes it possible to efficiently obtain bisphenol which either does not contain fine particulate impurities or contains such impurities only in minute amounts, and a method for manufacturing polycarbonate using bisphenol obtained bythis method. The filtration grade of the calcined metal filter should be 1.0 μm or less. After filtering, the calcined metal filter can be backwashed or chemically washed and then reused. The bisphenol should preferably be bisphenol A.

Clathrate compound including water-soluble microbicide

A clathrate compound composed of a water-soluble microbicide and a phenolic compound of formula (1) or (2): STR1

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.