38103-05-8

Basic information

• Product Name: 4,4'-[(1-methylethylidene)bis(1,4-phenyleneoxy)]bisphthalic acid
• Synonyms: 4,4'-[(1-methylethylidene)bis(1,4-phenyleneoxy)]bisphthalic acid;4,4'-[(1-Methylethylidene)bis(4,1-phenyleneoxy)]bis(1,2-benzenedicarboxylic acid);4,4'-[(Dimethylmethylene)bis(4,1-phenyleneoxy)]bisphthalic acid;4,4'-[Dimethylmethylenebis(4,1-phenyleneoxy)]bisphthalic acid;4,4'-[Isopropylidenebis(1,4-phenyleneoxy)]bisphthalic acid;4,4'-[Isopropylidenebis(4,1-phenylene)bisoxy]bisphthalic acid;4,4'-[Isopropylidenebis[(4,1-phenylene)oxy]]bisphthalic acid
• CAS NO: 38103-05-8
• Molecular Formula: C₃₁H₂₄O₁₀
• Molecular Weight: 556.51626
• EINECS: 253-780-1
• Mol File: 38103-05-8.mol
• Article Data: 7

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 4,4'-[(1-methylethylidene)bis(1,4-phenyleneoxy)]bisphthalic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4'-[(1-methylethylidene)bis(1,4-phenyleneoxy)]bisphthalic acid(38103-05-8)
• EPA Substance Registry System: 4,4'-[(1-methylethylidene)bis(1,4-phenyleneoxy)]bisphthalic acid(38103-05-8)

Safety Data

• Hazardous Substances Data: 38103-05-8(Hazardous Substances Data)

Usage

General Description

The chemical 4,4'-[(1-methylethylidene)bis(1,4-phenyleneoxy)]bisphthalic acid is a compound that is used in the production of plastics and polymers. It is a type of phthalic acid derivative, which is commonly used as a building block in the synthesis of various plastic materials. This specific compound contains two phthalic acid groups connected by a bridge of 1,4-phenyleneoxy groups, with an additional isopropylidene group attached to one of the phenylene rings. This structure gives it specific properties that make it useful in the production of certain types of resins and polymers. The compound is also used in some industrial processes and research applications due to its unique chemical structure and properties.

Upstream product

• 80-05-7 BPA 
• 40392-27-6 4-nitro-N-phenylphthalimide 
• 54395-52-7 4,4’-bisphenol A-bis-N-methylphthalimide 
• 41663-84-7 4-nitro-N-methyl-phthalimide 
• 31643-49-9 4-Nitrophthalonitrile 
• 38791-67-2 4,4'-isopropylidendioxydiphthalonitrile 

Downstream Products

• 38103-06-9 4,4'-bis(4,4'-isopropylidene diphenoxy)-bis(phthalic anhydride) 

Relevant articles and documents

Polyetherimides for gas separation membranes

A series of polyetherimides were synthesized by polycondensation reaction at high temperature of 2,2-bis[4,4-(3,4-dicarboxyphenoxy) phenyl]propane dianhydride with various aromatic diamines. These polymers are easy soluble in polar aprotic solvents such as N-methylpyrrolidinone, dimethylformamide or dimethylacetamide or even in less polar liquids such as chloroform. They show high thermal stability, with decomposition temperature being above 400°C and glass transition temperature in the range 200-275°C. Polymer solutions in chloroform were processed into thin films which were tested as gas separation membranes. Transport parameters for light gases were measured. The dependence of glass transition and decomposition temperature on conformational rigidity parameters was calculated.

Preparation method of aromatic diether dianhydride

The invention relates to a preparation method of aromatic diether dianhydride, which comprises the following steps: (1) pouring a bisphenol compound, N-substituted phthalimide and a catalyst into a mixed solvent, carrying out heating reflux to remove water and carrying out substitution reaction to obtain N-substituted diether imide; (2) adding alkali metal hydroxide and water into the N-substituted diether imide obtained in the step (1), heating the mixture, carrying out hydrolysis reaction, cooling, adding protonic acid, separating out solid, collecting the solid, and drying the solid; and (3) dissolving the dried solid in a mixed solution of acetic acid and acetic anhydride, carrying out heating reflux, cooling, filtration and solid collection in sequence, recrystallizing the collected solid with a mixed solution of acetonitrile and toluene, performing filtration, collecting the solid, and drying the solid to obtain the product. The preparation method of the aromatic diether dianhydride has the advantages that the steps are simplified, the consumed time is short, the used solvent is easy to recycle and can be repeatedly used, and the prepared product aromatic diether dianhydrideis high in purity and yield.

Method for making aromatic bis(ether dicarboxylic acid)

A method is provided for making aromatic bis(ether dicarboxylic acid) useful for making high performance injection moldable polyetherimides. An aromatic bis(ether N-organo phthalimide) is hydrolyzed directly to the corresponding tetra-acid by heating the aromatic bis(ehter N-organo phthalimide) in a closed system in the presence of acetic acid, water, and a mineral acid.