US5034370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color developer for pressure-sensitive recording paper
Assignee: Sumitomo Durez Co Ltd
•
Filing: 1989-12-08
•
Granted: 1991-07-23
•
Expires: 2009-12-08
Abstract
Abstract A color developer for pressure-sensitive recording paper is produced by admising components comprising: (A) 100 parts by weight of a polyvalent metal salt of a co-condensation product of a substituted salicylic acid, an aromatic hydrocarbon and an aldehyde. Such a co-condensation product is obtained by reacting: (a) a substituted salicylic acid, (b) one or more aromatic hydrocarbons having 4 to 9 carbon atoms, and (c) an aldehyde of 1 to 8 carbon atoms, in the presence of an acidic catalyst; and (B) 5 to 200 parts by weight of one or more members selected from the group consisting of petroleum resins, terpene resins, modified terpene resins, coumaarone resins and modified coumarone resins. The color developer is excellent in color density, resistance to yellow staining, fastness to light of color images and resistance to fading in water of color images, and in addition is capable of forming color images at a markedly increased speed.
Inventors
- 👤 Yukio Saeki
- 👤 Yukio Tokunaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:13
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
73 words
A color developer for pressure-sensitive recording paper comprising a mixture of components comprising (A) 100 parts by weight of a polyvalent metal salt of a co-condensation product consisting essentially of the reaction product of (1) a substituted salicylic acid; (2) an aromatic hydrocarbon; and (3) an aldehyde; and (B) 5 to 200 parts by weight of one or more members selected from the group consisting of petroleum resins, terpene resins, and coumarone resins.
Claim 2
Dependent Claim
73 words
A color developer for pressure-sensitive recording paper comprising a mixture of components comprising (A) 100 parts by weight of a polyvalent metal salt of a co-condensation product consisting essentially of the reaction product of (1) a substituted salicylic acid; (2) an aromatic hydrocarbon; and (3) an aldehyde; and (B) 5 to 200 parts by weight of one or more members selected from the group consisting of petroleum resins, terpene resins, and coumarone resins.
Claim 3
Dependent Claim
35 words
A color developer of claim 1 wherein the substituted salicyclic acid has one of the following formulas ##STR3## wherein R 1 and R 2 each represents a hydrocarbyl group having 4 to 12 carbon atoms.
Claim 4
Dependent Claim
42 words
The color developer of claim 2 wherien R 1 and R 2 each represents a sec-butyl group, a ter-butyl group, a tert-octyl group, a nonyl group, a dodecyl group, a phenyl group, a benzyl group, an α-methylbenzyl group or an α,α-dimethylbenzyl group.
Claim 5
Dependent Claim
24 words
The color developer of claim 2 wherien the aromatic hydrocarbon is selected from the group consisting of toluene, ethylbenzene, o-xylene, m-xylene, p-xylene and mesitylene.
Claim 6
Dependent Claim
16 words
The color developer of claim 1 wherein the aromatic hydrocarbon has 4 to 9 carbon atoms.
Claim 7
Dependent Claim
11 words
The color developer of claim 1 wherein the aldehyde is formaldehyde.
Claim 8
Dependent Claim
18 words
The color developer of claim 1 wherein the polyvalent metal is selected from zinc, tin, aluminum and nickel.
Claim 9
Dependent Claim
21 words
A pressure sensitive recording paper system comprising a paper substrate having a coating of the color developer of claim 1 thereon.
Claim 10
Dependent Claim
47 words
A color developer of claim 1 wherein said polyvalent metal salt is zinc. o-xylene, m-xylene, p-xylene and mesitylene; and (c) formaldehyde and (B) 5 to 200 parts by weight of one or more members selected from the group consisting of petroleum resins, terpene resins, and coumarone resins.
Claim 11
Dependent Claim
136 words
A color developer for use in pressure-sensitive recording paper produced by admixing components comprising: (A) 100 parts by weight of at least one member selected from the group consisting of zinc, tin, aluminum and nickel salts of a co-condensation product of a substituted salicylic acid, an aromatic hydrocarbon and formaldehyde obtainable by reacting, in the presence of an acidic catalyst, components consisting essentially of (a) one or more members selected from substituted salicyclic acids represented by the formula (I) or (II) of the following: ##STR4## wherein R 1 and R 2 each represents a sec-butyl group, a tert-butyl group, a tert-octyl grup, a nonyl group, a dodecyl group, a phenyl group, a benzyl grup, an α-methylbenzyl group or an α, α-dimethylbenzy group; (b) one or more aromatic hydrocarbons selected from the group consisting of toluene, ethylbenzene,
Claim 12
Dependent Claim
136 words
A color developer for use in pressure-sensitive recording paper produced by admixing components comprising: (A) 100 parts by weight of at least one member selected from the group consisting of zinc, tin, aluminum and nickel salts of a co-condensation product of a substituted salicylic acid, an aromatic hydrocarbon and formaldehyde obtainable by reacting, in the presence of an acidic catalyst, components consisting essentially of (a) one or more members selected from substituted salicyclic acids represented by the formula (I) or (II) of the following: ##STR4## wherein R 1 and R 2 each represents a sec-butyl group, a tert-butyl group, a tert-octyl grup, a nonyl group, a dodecyl group, a phenyl group, a benzyl grup, an α-methylbenzyl group or an α, α-dimethylbenzy group; (b) one or more aromatic hydrocarbons selected from the group consisting of toluene, ethylbenzene,
Claim 13
Dependent Claim
21 words
A pressure sensitive recording paper system comprising a paper substrate having a coating of the color developer of claim 8 thereon.
Claim 14
Dependent Claim
13 words
A color developer of claim 8 wherein said polyvalent metal salt is zinc.
Claim 15
Dependent Claim
169 words
A color developer for use in pressure-sensitive recording paper produced by admixing components comprising: (A) 100 parts by weight of at least one member selected from the group consisting of zinc, tin, aluminum and nickel salts of a co-condensation product of a substituted salicylic acid, an aromatic hydrocarbon and formaldehyde obtainable by reacting, in the presence of an acidic catalyst, components consisting of (a) one or more members selected from substituted salicyclic acids represented by the formula (I) or (II) of the following: ##STR5## wherein R 1 and R 2 each represents a sec-butyl group, a tert-butyl group, a tert-octyl grup, a nonyl group, a dodecyl group, a phenyl group, a benzyl grup, an α-methylbenzyl group or an α, α-dimethylbenzy group; (b) one or more aromatic hydrocarbons selected from the group consisting of toluene, ethylbenzene, o-xylene, m-xylene, p-xylene and mesitylene; and (c) formaldehyde; and (B) 5 to 200 parts by weight of one or more members selected from the group consisting of petroleum resins, terpene resins, and coumarone resins.
Claim 16
Dependent Claim
169 words
A color developer for use in pressure-sensitive recording paper produced by admixing components comprising: (A) 100 parts by weight of at least one member selected from the group consisting of zinc, tin, aluminum and nickel salts of a co-condensation product of a substituted salicylic acid, an aromatic hydrocarbon and formaldehyde obtainable by reacting, in the presence of an acidic catalyst, components consisting of (a) one or more members selected from substituted salicyclic acids represented by the formula (I) or (II) of the following: ##STR5## wherein R 1 and R 2 each represents a sec-butyl group, a tert-butyl group, a tert-octyl grup, a nonyl group, a dodecyl group, a phenyl group, a benzyl grup, an α-methylbenzyl group or an α, α-dimethylbenzy group; (b) one or more aromatic hydrocarbons selected from the group consisting of toluene, ethylbenzene, o-xylene, m-xylene, p-xylene and mesitylene; and (c) formaldehyde; and (B) 5 to 200 parts by weight of one or more members selected from the group consisting of petroleum resins, terpene resins, and coumarone resins.
Claim 17
Dependent Claim
13 words
A color developer of claim 13 wherein asid polyvalent metal salt is zinc.
References Cited (Backward Citations)
US4046941A
Cited
US4806521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-22 | 1995-01-21 | 1995-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-22 | 1999-01-21 | 1999-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-22 | 2003-01-21 | 2003-07-23 | $7700.00 | Window Closed / Lapsed |