A method for producing a bisphenol or the like by using a chemical recycling method that is moderate, has a small environmental load, and can efficiently degrade a polycarbonate resin is provided. In addition, a method for producing a recycled polycarbonate resin or the like by using a useful substance such as the bisphenol or the like is provided. A method for producing a bisphenol, including degrading a polycarbonate resin in the presence of an aromatic monoalcohol, water, and a catalyst. A method for producing carbon dioxide, including recovering carbon dioxide generated by the method for producing a bisphenol. A method for producing a carbonic acid diester by using the carbon dioxide. A method for producing a recycled polycarbonate resin by using the bisphenol and/or the carbonic acid diester. A method for producing an epoxy resin and a method for producing an epoxy resin cured product, by using the bisphenol

The present invention relates to a method for the manufacture of a modified polycarbonate comprising reacting polycarbonate with at least one primary amide in a melt mixing device at a temperature of at least 230° C. for a period of at least 0.5 minutes.

Process for the production of polycarbonates comprising: providing a hydrocarbon stream A obtained by treatment of a waste plastics feedstock; supplying a feed C comprising a fraction of the hydrocarbon stream A and a fraction of a hydrocarbon stream B to a thermal cracker furnace comprising cracking coil(s); thermally cracking in the presence of steam to obtain a cracked hydrocarbon stream D; separating a product stream E comprising propylene and a product stream F comprising benzene from the cracked hydrocarbon stream D; performing a reaction and one or more separation step to obtain a product stream G comprising phenol; supplying the product stream G and acetone to a reactor and performing a reaction and one or more separation step to obtain a product stream H comprising bisphenol-A; and supplying the product stream H with phosgene or diphenyl carbonate to a reactor and performing a polymerisation reaction to obtain a polycarbonate.

Process for the production of polycarbonates comprising providing a hydrocarbon stream A obtained by hydrotreatment of a pyrolysis oil produced from a waste plastics feedstock; supplying a feed C comprising a fraction of the hydrocarbon stream A to a thermal cracker furnace comprising cracking coil(s); thermally cracking in the presence of steam to obtain a cracked hydrocarbon stream D; separating a product stream E comprising propylene and a product stream F comprising benzene from the cracked hydrocarbon stream D; performing a reaction and one or more separation step to obtain a product stream G comprising phenol; supplying the product stream G and acetone to a reactor and performing a reaction and one or more separation step to obtain a product stream H comprising bisphenol-A; and supplying the product stream H with phosgene or diphenyl carbonate to a reactor and performing a polymerisation reaction to obtain a polycarbonate.

Provided is a compound represented by General Formula (1) ##STR00001## in General Formula (1), Ar.sub.1 and Ar.sub.2 independently represent a group selected from the following Formulae, ##STR00002##

A polycarbonate resin having a high refractive index, a low Abbe number and a high moisture and heat resistance is provided. In an embodiment, a polycarbonate resin including a structural unit represented by general formula (1) below is provided. ##STR00001##

The invention relates to a curable mixture comprising at least one organic compound having phenolic hydroxyl groups and at least one multifunctional cyclic organic carbonate as crosslinking agent, to a method of curing the said organic compound having phenolic hydroxyl groups with at least one multifunctional cyclic organic carbonate, and to binders for coating compositions, adhesive compositions, or filler compositions comprising at least one organic compound having phenolic hydroxyl groups and at least one multifunctional cyclic organic carbonate.

Provided is a polycarbonate resin having a structural unit (I) represented by formula (1) below:

##STR00001##

wherein L.sup.1 and L.sup.2 each independently represent a divalent linking group selected from an alkylene group, a cycloalkylene group, an arylene group, an oxyalkylene group, an oxyarylene group, and a group formed by combining two or more of these, where one or more hydrogen atoms of the linking group are optionally further replaced with substituents, and two of the substituents are optionally bonded to each other to form a ring structure.

A process for making ortho alkoxy bisphenol monomers includes contacting an (alk-1-enyl)alkoxyphenol (type 1) with an alkoxyphenol (type 2) in the presence of an acidic catalyst. Both type of renewable phenols (type 1 and 2) can be generated from lignocellulosic biomass. The use of such alkoxy phenols as a precursor to bisphenol monomers has the potential to reduce the cost and environmental impact of structural materials, while meeting or exceeding the performance of current petroleum-derived polymers, such as thermoplastics and thermoset resins.

Crystalline solvate forms and amorphous forms of 6,6′-diphenyl-2,2′-bis(2-hydroxyethoxy)-1,1′-binaphthyl, where the organic solvent is selected from methanol, toluene, and methyl ethyl ketone, and an amorphous form of 6,6′-diphenyl-2,2′-bis(2-hydroxyethoxy)-1,1′-binaphthyl having a purity of at least 99.0% by weight, based on organic matter. Thermoplastic resins containing a structural unit derived from 6,6′-diphenyl-2,2′-bis(2-hydroxyethoxy)-1,1′-binaphthyl. Optical lenses containing the thermoplastic resins containing a structural unit derived from 6,6′-diphenyl-2,2′-bis(2-hydroxyethoxy)-1,1′-binaphthyl.