Chemical

  • November 2019
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Abstract of GB866510 Diazoamino  compounds are prepared by condensing  the diazo derivative of 1­amino­2­methyl­ 4:5 ­dichlorobenzene with N­(2­ carboxyphenyl)­glycine, the benzene  nucleus of which is substituted by one or  more halogen atoms (chlorine or  bromine). Reference has been directed  by the Comptroller to Specification  766,730.ALSO:The process of the  parent Specification for colour printing  textile materials of natural or  regenerated cellulose with a paste  containing at least one coupling  component and a diazoamino compound  followed by neutral steaming is modified  in that the diazoamino compound  employed is that obtained by condensing  the diazo derivative of 1­amino­2­methyl­ 4 : 5­dichlorobenzene with N­(2­ carboxyphenyl)­glycine, the benzene  nucleus of which is substituted by one or  more halogen atoms. Examples describe  the printing of cotton, the coupling  components employed being the o­ phenetidide and the o­anisidide of 2­ hydroxy­3­carboxy­naphthalene.  Reference has been directed by the  Comptroller to Specification 766,730. 

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