Diphenyl sulfone derivative and recording material prepared ther

Details Diphenyl sulfone derivative and recording material prepared ther Diphenyl sulfone derivative and recording material prepared ther

1998-05-05

2000-08-15

Hess, Bruce

Record receiver having plural interactive leaves or a colorless

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

Method of use, kit, or combined with marking instrument or...

427150, 427151, 503216, B41M 5155, B41M 530

Patent

active

061036617

ABSTRACT:
The present invention is directed to recording materials characterized in that the recording materials comprise at least one of diphenyl sulfone derivatives represented by the following general formula (I); ##STR1## wherein Y represents a linear or branched (un)-saturated C.sub.1 -C.sub.12 hydrocarbon group, a C.sub.1 -C.sub.8 hydrocarbon group having an ether linkage, or a group represented by a general formula; ##STR2## wherein R represents methylene or ethylene; R.sup.1, R.sup.2, R.sup.3 and R.sup.4 represent each independently lower alkyl or lower alkenyl; m represents 0 or an integer of 1 or 2,; and n, p, q and r represent each independently 0 or an integer of 1 to 4, provided when n, p, q and r are each 2 or above, the substituents represented by R.sup.1, R.sup.2, R.sup.3 and R.sup.4 may be each different from one another.

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