The present invention relates to a method for producing cannabigerol and purifying it from a reaction mixture. The present invention also relates to the cosmetic use of cannabigerol for the inhibition of tyrosinase activity and/or the reduction of melanin production in the skin, in particular for reducing pigmentation of the skin, preferably for the improvement of the appearance of the skin in case of hyperpigmentation, lentigo or vitiligo. Furthermore, the present invention relates to cannabigerol for use in a therapeutic method for the inhibition of tyrosinase activity and/or the reduction of melanin production in the skin, preferably for use in a therapeutic method for the treatment and/or prevention of malign skin disorders, in particular skin cancer.

Processes of producing cresols from a phenols containing feed are described. The processes involve a combination of dealkylation and transalkylation processes. The dealkylation process converts the heavy alkylphenols in an alkylphenols stream to phenol and olefins. The olefins produced in the dealkylation process are separated out. The methylphenols, which are not converted in the dealkylation process, and phenol react in the transalkylation process to generate cresols.

Processes of producing cresols from a phenols containing feed are described. The processes involve a combination of dealkylation and transalkylation processes. The dealkylation process converts the heavy alkylphenols in an alkylphenols stream to phenol and olefins. The olefins produced in the dealkylation process are separated out. The methylphenols, which are not converted in the dealkylation process, and phenol react in the transalkylation process to generate cresols.

Processes of producing cresols from a phenols containing feed are described. The processes involve a combination of dealkylation and transalkylation processes. The dealkylation process converts the heavy alkylphenols in an alkylphenols stream to phenol and olefins. The olefins produced in the dealkylation process are separated out. The methylphenols, which are not converted in the dealkylation process, and phenol react in the transalkylation process to generate cresols.

Processes and apparatus for making xylenes and phenol are described. Phenol and alkyl phenols are separated from coal derived liquid. The phenol is separated from the alkyl phenols. The alkyl phenols can be reacted with aromatics such as benzene and toluene to make xylenes. The xylenes and other aromatics are then separated from the phenol and alkyl phenols. Para-xylene is separated and recovered using a xylene separation process, and meta-xylene and ortho-xylene are optionally converted to para-xylene through an isomerization reaction.

Processes and apparatus for making xylenes and phenol are described. Phenol and alkyl phenols are separated from coal derived liquid. The phenol is separated from the alkyl phenols. The alkyl phenols can be reacted with aromatics such as benzene and toluene to make xylenes. The xylenes and other aromatics are then separated from the phenol and alkyl phenols. Para-xylene is separated and recovered using a xylene separation process, and meta-xylene and ortho-xylene are optionally converted to para-xylene through an isomerization reaction.

Provided are a bisphenol represented by the general formula (1), a method for producing the bisphenol, and a polyarylate resin, a (meth)acrylate compound and an epoxy resin which are derived from the bisphenol. In the formula (1), R.sub.1 to R.sub.4 are the same or different, and each represent an alkyl group, an aryl group or a halogen atom, n.sub.1 and n.sub.2 are the same or different, and each represent an integer of 1 to 4, and k.sub.1 to k.sub.4 are the same or different, and each represent 0 or an integer of 1 to 4. When at least one of k.sub.1 to k.sub.4 is 2 or more, corresponding R.sub.1 to R.sub.4 may be the same or different.

Provided are a bisphenol represented by the general formula (1), a method for producing the bisphenol, and a polyarylate resin, a (meth)acrylate compound and an epoxy resin which are derived from the bisphenol. In the formula (1), R.sub.1 to R.sub.4 are the same or different, and each represent an alkyl group, an aryl group or a halogen atom, n.sub.1 and n.sub.2 are the same or different, and each represent an integer of 1 to 4, and k.sub.1 to k.sub.4 are the same or different, and each represent 0 or an integer of 1 to 4. When at least one of k.sub.1 to k.sub.4 is 2 or more, corresponding R.sub.1 to R.sub.4 may be the same or different.

Processes and apparatus for making xylenes and phenol are described. Phenol and alkyl phenols are separated from coal derived liquid. The phenol is separated from the alkyl phenols. The alkyl phenols can be reacted with aromatics such as benzene and toluene to make xylenes. The xylenes and other aromatics are then separated from the phenol and alkyl phenols. Para-xylene is separated and recovered using a xylene separation process, and meta-xylene and ortho-xylene are optionally converted to para-xylene through an isomerization reaction.

Processes and apparatus for making xylenes and phenol are described. Phenol and alkyl phenols are separated from coal derived liquid. The phenol is separated from the alkyl phenols. The alkyl phenols can be reacted with aromatics such as benzene and toluene to make xylenes. The xylenes and other aromatics are then separated from the phenol and alkyl phenols. Para-xylene is separated and recovered using a xylene separation process, and meta-xylene and ortho-xylene are optionally converted to para-xylene through an isomerization reaction.