4,4'-bis-(.beta.-hydroxyethylsulfonyl)-biphenyl and its esters

Details 4,4'-bis-(.beta.-hydroxyethylsulfonyl)-biphenyl and its esters 4,4'-bis-(.beta.-hydroxyethylsulfonyl)-biphenyl and its esters

1985-09-12

1987-04-21

Chan, Nicky

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfate esters

558162, 558 33, 558184, 560308, 568 32, 8516, 8517, C07C14118, C07C14710, C07C 69017, C07F 9145

Patent

active

046598561

ABSTRACT:
Compounds of the general formula (1) ##STR1## in which the Zs, preferably identical to each other, each denote a hydroxy group or a sulfato, thiosulfato or phosphato group. They can be prepared by first converting biphenyl by sulfochlorination into biphenyl-4,4'-disulfochloride, then reducing the latter with an alkali metal or alkaline earth metal sulfite or hydrogensulfite to sulfinic acid, and in turn reacting the latter with ethylene oxide to give 4,4'-bis-(.beta.-hydroxyethylsulfonyl)-biphenyl, which can be esterified in conventional manner. They are used for modifying and improving the physical and coloristic properties of materials made of natural and/or synthetic polyamide fibers and/or polyurethane fibers and as auxiliaries in dyeing processes for such fiber materials.

REFERENCES:
patent: Re26792 (1970-02-01), Tesoro
patent: 3218118 (1965-11-01), Steele et al.

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