Developer for pressure-sensitive recording sheets, aqueous dispe

Details Developer for pressure-sensitive recording sheets, aqueous dispe Developer for pressure-sensitive recording sheets, aqueous dispe

1991-01-22

1992-06-02

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

562477, 503225, 503227, B01J 1300, C07C 6510, B41M 5155

Patent

active

051184435

ABSTRACT:
A developer comprising at least one polyvalent metal salt of a nuclear substituted salicylic acid of the following general formula is provided. ##STR1## In the formula, R.sub.1 represents an alkyl group having from 1 to 12 carbon atoms, R.sub.2 represents a hydrogen atom or an alkyl group having from 1 to 12 carbon atoms, R.sub.3 represents a hydrogen atom or a methyl group provided that at least one of R.sub.1 and R.sub.2 is a secondary butyl group, a secondary hexyl group, an isohexyl group, a secondary octyl group, an isononyl group, a secondary decyl group, a secondary dodecyl group or an isododecyl group and the total number of the carbon atoms in R.sub.1, R.sub.2 and R.sub.3 is from 9 to 18, M is a polyvalent metal atom, and m is a valence of M. An aqueous dispersion containing the developer and a method for preparing the developer are also described.

REFERENCES:
patent: 3983292 (1976-09-01), Saito et al.
patent: 4046941 (1977-09-01), Saito et al.
patent: 4230743 (1980-10-01), Nakamura et al.
patent: 4749680 (1988-06-01), Umeda et al.
patent: 4803192 (1989-02-01), Saeki et al.
patent: 4806521 (1989-02-01), Umeda et al.

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