Thermoresponsive recording paper sheet

Details Thermoresponsive recording paper sheet Thermoresponsive recording paper sheet

B - Operations, Transporting

41

M

42/3

B41M 5/18 (1985.01)

Patent

CA 1213140

THERMORESPONSIVE RECORDING PAPER SHEET ABSTRACT There is disclosed the use in a thermoresponsive recording paper sheet of compounds of the formula: Image wherein R1 is hydrogen, alkyl of 1 to 5 carbon atoms, benzyl or phenethyl, and R2 is alkyl of 1 to 5 carbon atoms, benzyl or phenethyl, but R2 does not represent methyl when R1 is hydrogen.

420215

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