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US 2018/0022137 A1Published application
Recording material and recording sheet
AssigneeNippon Soda Co., Ltd.
InventorsShuntaro KINOSHITA, Kazumi HAMAKAWA, Hiroshi SAKAI, Kayoko TADA
Life of this patent
Estimating the term…
Abstract
An object of the invention is to provide a recording material and recording sheet having excellent color-developing performance, storage stability, etc. A recording material having good color-developing performance and storage stability may be obtained by using a specific compound having a benzhydrol skeleton as an additive in a recording material employing color development through a reaction between a color former and a color-developing agent.
Claims12
A recording material comprising
- (A) at least one color former,
- (B) at least one compound selected from the group consisting of compounds represented by the following formula (I):
- (wherein X and Y each independently represent a halogen atom, a nitro group, a C1 to C6 alkyl group, a C1 to C6 alkoxy group, a C2 to C6 alkenyl group, a C1 to C6 haloalkyl group or a C2 to C6 haloalkenyl group, p and q each independently represent any integer of 0 to 5, and Z represents a hydrogen atom, a C1 to C6 alkyl group, a C1 to C6 alkoxy group, a C2 to C6 alkenyl group, a C1 to C6 haloalkyl group or a C2 to C6 haloalkenyl group), and
- (C) a color-developing agent, which is at least one compound selected from the group consisting of a compound represented by the following formula (II):
- (wherein R1 and R2 each independently represent a halogen atom, a C1 to C6 alkyl group optionally having a substituent, a C2 to C6 alkenyl group optionally having a substituent, an arylsulfonyl group optionally having a substituent, n1 represents any integer of 0 to 4, n2 represents 1 or 2 (with the proviso that n1+n2 is any integer of 1 to 5), n3 represents any integer of 0 to 5, n4 represents 0 or 1 (with the proviso that n3+n4 is any integer of 0 to 5), R3 is a hydrogen atom, a C1 to C6 alkyl group optionally having a substituent, a C2 to C6 alkenyl group optionally having a substituent, an aralkyl group optionally having a substituent or an arylsulfonyl group optionally having a substituent),
- a compound represented by the following formula (III):
- (wherein R5 to R7 represent a hydrogen atom, a halogen atom, a nitro group, a C1 to C6 alkyl group, a C1 to C6 alkoxy group, a C2 to C6 alkenyl group, a C1 to C6 fluoroalkyl group, an N(R8)2 group (wherein R8 represents a hydrogen atom, a phenyl group, a benzyl group, a C1 to C6 alkyl group), NHCOR9 (wherein R9 represents a C1 to C6 alkyl group), a phenyl group optionally having a substituent or a benzyl group optionally having a substituent, n5 and n7 each independently represent any integer of 1 to 5, and n6 represents any integer of 1 to 4),
- a compound represented by the following formula (IV):
- (wherein R5 to R7 are the same as R5 to R7 in formula (III), n6 and n7 are the same as n6 and n7 in formula (III) and n8 represents any integer of 1 to 7),
- a compound represented by the following formula (V):
- (wherein R5 to R7 are the same as R5 to R7 in formula (III), and n6, n7 and n8 are the same as n6, n7 and n8 in formula (IV)),
- a compound represented by the following formula (VI):
- (wherein R10 and R11 each independently represent a C1 to C6 alkyl group, and n9 and n10 each independently represent any integer of 0 to 5), and
- a compound represented by the following formula (VII):
- (wherein D represents a linear, branched or cyclic C1 to C12 hydrocarbon group or a group represented by the following formula (VIII) or formula (IX):
- (wherein R′ represents a methylene group or an ethylene group, T represents a hydrogen atom or a C1 to C4 alkyl group), m1 represents any integer of 1 to 6, R4 each independently represent a halogen atom, a C1 to C6 alkyl group or a C2 to C6 alkenyl group, n11 each independently represent any integer of 0 to 4, and m2 represents any integer of 1 to 6, and R1, R2, n1, n2 and n3 represent the same as R1, R2, n1, n2 and n3 in formula (II)).
13 more elements
A recording material comprising
- (A) at least one color former,
- (B) at least one compound selected from the group consisting of compounds represented by the following formula (X):
- (wherein X and Y each independently represent a halogen atom, a nitro group, a C1 to C6 alkyl group, a C1 to C6 alkoxy group, a C2 to C6 alkenyl group, a C1 to C6 haloalkyl group or a C2 to C6 haloalkenyl group, and p and q each independently represent any integer of 0 to 5), and
- (C) at least one color-developing agent.
1 more element
Dependencies are inferred from the claim text.