Color-developing sheet for pressure-sensitive recording sheets

Details Color-developing sheet for pressure-sensitive recording sheets Color-developing sheet for pressure-sensitive recording sheets

B - Operations, Transporting

41

M

42/16

B41M 5/22 (1980.01)

Patent

CA 1131021

- 1 - Title of the Invention COLOR-DEVELOPING SHEET FOR PRESSURE- SENSITIVE RECORDING SHEETS Abstract of the Disclosure A color-developing sheet for pressure-sensitive recording sheets, said sheet comprising as a color- developing agent at least one 2,2'-bisphenolsulfone zinc salt selected from compounds of the general formula Image (I) wherein R1 and R2 are identical or different and represent a hydrogen atom, a halogen atom, an a?kyl group containing 1 to 10 carbon atoms, a cycloalkyl group containing 3 to 10 carbon atoms, an aralkyl group containing 7 to 11 carbon atoms, or a phenyl group.

334100

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