Diazo compounds, a process for their preparation and their...

Details Diazo compounds, a process for their preparation and their... Diazo compounds, a process for their preparation and their...

C - Chemistry, Metallurgy

09

B

400/1, 6/217, 8/

C09B 33/06 (2006.01) C09B 35/22 (2006.01) D06P 1/04 (2006.01)

Patent

CA 1144161

Abstract of the Disclosure: When a diamine of the formula Image in which n is 1 to 4, is bis-diazotized and the resulting bis-diazo compound is coupled with 2 moles of one or more coupling components of the formula Image in which R1 is hydrogen, chlorine, bromine, methyl or methoxy and R2 is hydrogen or, if R1 is hydrogen, also methyl or ethyl, di?azo compounds are obtained which are colorants. Due to their high fastness to light and to migration and their heat stability and dispersibility, these compounds are useful for pigmenting high molecular weight materials, especially polyolefins.

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