Identification of components in recycle stream of para-tert-butylphenol production

Components being a part of recycle stream of para-tert -butylphenol production were identified with chromatography-mass spectrometry and chemical method. It was proved that their structure belongs to alkylphenol with side chain consisting of 8 and 12 carbon atom. It was founded that positional isomers of (1,1,3,3-tetramethylbutyl)phenol and 1,1,3,3,5,5-hexamethylhexylphenol have the greatest relative concentration in recycle stream.