Cholesteryl compound and rewritable full-color thermosensitive recording material
AssigneesRicoh Company, Ltd., Okamura Oil Mill Limited, Nobuyuki Tamaoki, Hiroo Matsuda, Director-General of Agency of Industrial Science and Technology
InventorsNobuyuki Tamaoki, Hiroo Matsuda, Yoshishige Kida
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Abstract
A cholesteryl compound has formula (1), and a rewritable full-color thermosensitive recording material contains the above-mentioned cholesteryl compound of formula (1): YO—CO(CH2)n—A—(CH2)nCO—OY (1) wherein A is a 1,5-hexadienylene group represented by the formula —C(R)═CHCH2CH2CH═C(R)-, in which R is a hydrogen atom or methyl group; Y is a cholesterol residue obtained by removing a hydroxyl group from cholesterol; and n is an integer of 5 to 7.
Claims2
A cholesteryl compound of formula (1):
- YO—CO(CH2)n—A—(CH2)nCO—OY (1)
- wherein A is a 1,5-hexadienylene group represented by the formula —C(R)═CHCH2CH2CH═C(R)—, in which R is a hydrogen atom or methyl group;
- Y is a cholesterol residue obtained by removing a hydroxyl group from cholesterol;
- and n is an integer of 5 to 7.
A rewritable full-color thermosensitive recording material comprising a cholesteryl compound of formula (1):
- YO—CO(CH2)n—A—(CH2)nCO—OY (1)
- wherein A is 1,5-hexadienylene group represented by the formula —C(R)═CHCH2CH2CH═C(R)—, in which R is a hydrogen atom or methyl group;
- Y is a cholesterol residue obtained by removing a hydroxyl group from cholesterol;
- and n is an integer of 5 to 7.
Dependencies are inferred from the claim text.