Claims
- 1. A developer for pressure-sensitive recording sheets which comprises at least one polyvalent metal salt of a nuclear substituted salicylic acid selected from the group consisting of 3,5-disecondary hexylsalicylic acid, 3-5-diisohexylsalicylic acid, 3-secondary decylsalicylic acid, 3-secondary decyl-5-methylsalicylic acid, 3-secondary decyl-6-methylsalicylic acid, 3-secondary dodecylsalicylic acid, 3-isododecylsalicylic acid and 3-isododecyl-5-methylsalicylic acid.
- 2. An aqueous dispersion of a developer for pressure-sensitive recording sheets which comprises at least one polyvalent metal salt of a nuclear substituted salicylic acid selected from the group consisting of 3,5-disecondary hexylsalicylic acid, 3,5-diisohexylsalicylic acid, 3-secondary decylsalicylic acid, 3-secondary decyl-5-methylsalicylic acid, 3-secondary decyl-6-methylsalicylic acid, 3-secondary dodecylsalicylic acid, 3-isododecylsalicylic acid and 3-isododecyl-5-methylsalicylic acid.
- 3. A developer according to claim 1, wherein said nuclear substituted salicylic acid is a member selected from the group consisting of 3-secondary decyl-5-methylsalicylic acid, 3-secondary decyl-6-methylsalicylic acid, 3-secondary dodecylsalicylic acid, 3-isododecylsalicylic acid and 3-isododecyl-5-methylsalicylic acid.
- 4. A developer according to claim 1, wherein said polyvalent metal salt of the nuclear substituted salicylic acid is zinc salt of the nuclear substituted salicylic acid.
- 5. A method for preparing a developer for pressure-sensitive recording sheets which comprises at least one polyvalent metal salt of a nuclear substituted salicylic acid, the method comprising subjecting to double decomposition an aqueous solution of an alkali metal salt of a nuclear substituted salicylic acid selected from the group consisting of 3,5-disecondary hexylsalicylic acid, 3,5-diisohexyl-salicylic acid, 3-secondary decylsalicylic acid, 3-secondary decyl-5-methylsalicylic acid, 3-secondary decyl-6-methylsalicylic acid, 3-secondary dodecylsalicylic acid, 3-isododecylsalicylic acid and 3-isododecyl-5-methylsalicylic acid, and an aqueous solution of a water-soluble polyvalent metal salt in the presence of an organic solvent whose solubility in water is not larger than 10 wt % and which has a boiling point of from 60.degree. C. to 180.degree. C., thereby obtaining a polyvalent metal salt of said nuclear substituted salicylic acid.
Priority Claims (2)
Number |
Date |
Country |
Kind |
62-301510 |
Dec 1987 |
JPX |
|
63-274555 |
Nov 1988 |
JPX |
|
Parent Case Info
This is a continuation of application Ser. No. 07/277,321, filed Nov. 29, 1988, now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (13)
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Continuations (1)
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Number |
Date |
Country |
Parent |
277321 |
Nov 1988 |
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