Claims
- 1. A pressure-sensitive recording material comprising a support having thereon a layer of microcapsules containing at least one chromenoindole derivative color former which is capable of forming a color upon contact with an electron acceptor material and which is represented by the following general formula (I): ##STR12## wherein R.sub.1 and R.sub.2, which may be the same or different, each represents an alkyl group, an alkyl group substituted with one or more of a cyano group, a halogen atom or an alkoxy group, an aralkyl group, a phenyl group or a phenyl group substituted with one or more of an alkyl group or a halogen atom; X represents a hydrogen atom, an alkoxy group, a dialkylamino group, an alkylarylamino group, an alkylaralkylamino group, a diaralkylamino group, an acylamino group, a halogen atom or an alkyl group; Y represents a hydrogen atom, an alkyl group, a halogen atom, an alkoxy group or a nitro group; Z represents an acyl group, a carbamoyl group, an alkoxycarbonyl group, a sulfamoyl group or a sulfonyl group; Q.sub.1 and Q.sub.2, which may be the same or different, each represents a hydrogen atom, a lower alkyl group or a halogen atom; and A.sub.1, A.sub.2, A.sub.3 and A.sub.4, which may be the same or different, each represents a halogen atom, an alkyl group or an alkoxy group.
- 2. A pressure-sensitive recording material comprising a layer of an electron acceptor material as a color developer and a layer of microcapsules containing at least one chromenoindole derivative color former which is capable of forming a color upon contact with an electron acceptor material and which is represented by the following general formula (I): ##STR13## wherein R.sub.1 and R.sub.2, which may be the same or different, each represents an alkyl group, an alkyl group substituted with one or more of a cyano group, a halogen atom or an alkoxy group, an aralkyl group, a phenyl group or a phenyl group substituted with one or more of an alkyl group or a halogen atom; X represents a hydrogen atom, an alkoxy group, a dialkylamino group, an alkylarylamino group, an alkylaralkylamino group, a diaralkylamino group, an acylamino group, a halogen atom or an alkyl group; Y represents a hydrogen atom, an alkyl group, a halogen atom, an alkoxy group or a nitro group; Z represents an acyl group, a carbamoyl group, an alkoxycarbonyl group, a sulfamoyl group or a sulfonyl group; Q.sub.1 and Q.sub.2, which may be the same or different, each represents a hydrogen atom, a lower alkyl group or a halogen atom; and A.sub.1, A.sub.2, A.sub.3 and A.sub.4, which may be the same or different, each represents a halogen atom, an alkyl group or an alkoxy group.
- 3. The recording material of claim 1, wherein Z represents an alkylcarbonyl group, an arylcarbonyl group, an alkoxycarbonyl group, a carbamoyl group, an alkylsulfonyl group, an arylsulfonyl group or a sulfamoyl group.
- 4. The recording material of claim 2, wherein Z represents an alkylcarbonyl group, an arylcarbonyl group, an alkoxycarbonyl group, a carbamoyl group, an alkylsulfonyl group, an arylsulfonyl group or a sulfamoyl group.
- 5. The pressure-sensitive recording material of claim 1, wherein said support is paper, a synthetic resin sheet or a resin-coated paper.
- 6. The pressure-sensitive recording material of claim 2, wherein said support is paper, a synthetic resin sheet or a resin-coated paper.
- 7. The pressure-sensitive recording material of claim 1, wherein said color former represented by the general formula (I) is: ##STR14##
- 8. The pressure-sensitive recording material of claim 2, wherein said color former represented by the general formula (I) is: ##STR15##
- 9. The pressure-sensitive recording material of claim 2, wherein said electron acceptor material is selected from the group consisting of a clay mineral, a phenol, a phenolic resin, an organic carboxylic or sulfonic acid, a metal salt of an organic acid, an inorganic acid or a metal halide.
- 10. The pressure-sensitive recording material of claim 9, wherein said electron acceptor material is selected from the group consisting of active terra alba, acid terra alba, attapulgite, montmorillonite, p-phenylphenol, o-phenylphenol, o-ethylphenol, p-ethylphenol, p-butylphenol, 2,4-dibutylphenol, o-cresol, m-cresol, p-cresol, o-chlorophenol, p-chlorophenol, o-benzylphenol, p-benzylphenol, xylenol, thymol, resorcinol, hexylresorcinol, .alpha.-naphthol, .beta.-naphthol, 4,4'-isopropylidene diphenol, 2,2'-methylenebisphenol, aluminum 3,5-dibutylsalicylate, zinc 3,5-dibutylsalicylate, zinc 3,5-bis(.alpha.-methylbenzyl)salicylate, zinc p-toluenesulfonate, zinc 5-butylsalicylate, hydrogen chloride, hydrogen bromide, hydrogen iodide, boric acid, silicic acid, phosphoric acid, sulfuric acid, nitric acid, perchloric acid or a metal halide of Al, Zn, Ni, Sn, Ti or B.
- 11. The recording material of claim 1, wherein Z represents an acyl group.
- 12. The recording material of claim 2, wherein Z represents an acyl group.
Priority Claims (1)
Number |
Date |
Country |
Kind |
51-100971 |
Aug 1976 |
JPX |
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Parent Case Info
This application is a continuation-in-part application of Ser. No. 827,053, filed Aug. 23, 1977.
US Referenced Citations (6)
Continuation in Parts (1)
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Number |
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Parent |
827053 |
Aug 1977 |
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