Sulfonyl compound and thermal-sensitive recording medium using t

Details Sulfonyl compound and thermal-sensitive recording medium using t Sulfonyl compound and thermal-sensitive recording medium using t

1995-10-11

1998-01-06

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Identified organic electron acceptor other than phenolic resin

427150, B41M 530

Patent

active

057054525

ABSTRACT:
A thermal recording medium comprising a as a developer a sulfonyl compound represented by general formula (1) or a polyvalent metal salt thereof. ##STR1## where X represents H or a lower alkyl group, R.sub.1, R.sub.2 and R.sub.3 represent H, halogen atom, a hydroxyl group, a lower alkyl group or a cycloalkyl group, R.sub.4, R.sub.5 and R.sub.6 represent H, halogen atom, a lower alkyl group or a cycloalkyl group, and R.sub.7 represents H or ##STR2## where R.sub.4, R.sub.5 and R.sub.6 are as defined above. The thermal recording medium has a high sensitivity and a lower background blush during storage, and also has excellent stability against heating, moisture and plasticizer.

REFERENCES:
patent: 5420094 (1995-05-01), Araki et al.
European Search Report No. EP 95116182 and Communication dated Feb. 21, 1996.
Journal of Organic Chemistry of the USSR, p. 2406.
Chemical Abstracts--Eleventh Collective Index. vols. 96-105 (1982-1986).

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