A heat-sensitive structure containing sulfonylurea preparation method of the developer (by machine translation)
The invention discloses a heat-sensitive structure containing sulfonylurea preparation method of the developer, comprising the following steps: (1) esterification: m-aminophenol and toluene sulfonyl chloride under alkaline condition to obtain 3 - amino ph
A heat sensitive recording material, comprisinga) at least one colour forming compound, andb) at least one developer of the formulawhereinR1 is unsubstituted or substituted phenyl, naphthyl or C1-C20alkyl,X is a group of the formulaA is unsubstituted or s
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(2008/06/13)
HEAT SENSITIVE RECORDING MATERIAL
New crystal forms of N-(p-toluenesulphonyl)-N'-(3-p-toluenesulphonyl-oxy-phenyl)urea, methods for its manufacture, its use, in particular for the manufacture of heat sensitive recording materials.
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(2008/06/13)
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