Patent US3905935A successfully refreshed from Google Patents.
US3905935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dye laking resins for printing inks
Assignee: Hercules LLC
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Filing: 1973-01-15
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Granted: 1975-09-16
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Expires: 1993-01-15
Abstract
Abstract This specification discloses laking of dyes for printing inks to make the dyes insoluble in water. A phenol salicylic acid formaldehyde condensation resin is mixed with a dye solution prior to printing.
Inventors
- 👤 Philip G Irwin
- 👤 Thomas J Mcnaughtan
- 👤 Joseph G Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:48
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/102; C09D11/103; C08; C08G; C08G8/00; C08G8/04; C08G8/08; C08G8/24
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
49 words
AS A NEW COMPOSITION OF MATTER, A PHENOL SALICYLIC ACID FORMALDEHYDE CONDENSATION RESIN FORMEDBY CONDENSATION WITH OXALIC ACID AND HAVING AN ACID NUMBER FROM ABOUT 65 TO 125, A SOLUTION VISCOSITY IN DIETHYLENE GLYCOL OF ABOUT 53 TO 250 STOKES, AND HAVING A COLOR NOT DARKER THAN ABOUT 4+.
Claim 2
Dependent Claim
49 words
AS A NEW COMPOSITION OF MATTER, A PHENOL SALICYLIC ACID FORMALDEHYDE CONDENSATION RESIN FORMEDBY CONDENSATION WITH OXALIC ACID AND HAVING AN ACID NUMBER FROM ABOUT 65 TO 125, A SOLUTION VISCOSITY IN DIETHYLENE GLYCOL OF ABOUT 53 TO 250 STOKES, AND HAVING A COLOR NOT DARKER THAN ABOUT 4+.
Claim 3
Dependent Claim
14 words
The resin of claim 1 having a specific gravity of about 1.2 to 1.3.
Claim 4
Dependent Claim
39 words
A new resin formed by bringing together phenol, salicylic acid, and formaldehyde and reacting them at an elevated temperature in the presence of an oxalic acidic catalyst, said resin being characterized by a color not darker than about 4+.
Claim 5
Dependent Claim
39 words
A new resin formed by bringing together phenol, salicylic acid, and formaldehyde and reacting them at an elevated temperature in the presence of an oxalic acidic catalyst, said resin being characterized by a color not darker than about 4+.
Claim 6
Dependent Claim
27 words
The resin of claim 3 having an acid number from about 65 to 125 and a solution viscosity in diethylene glycol of about 50 to 250 stokes.
Claim 7
Dependent Claim
14 words
The resin of claim 3 having a specific gravity of about 1.2 to 1.3.
Claim 8
Independent Claim
46 words
The method of laking dyes for printing inks which comprises dissolving a water soluble dye and a phenol salicylic acid formaldehyde resin in a solvent, said resin having been formed by condensation with oxalic acid and being characterized by a color not darker than about 4+.
Claim 9
Independent Claim
46 words
The method of laking dyes for printing inks which comprises dissolving a water soluble dye and a phenol salicylic acid formaldehyde resin in a solvent, said resin having been formed by condensation with oxalic acid and being characterized by a color not darker than about 4+.
Claim 10
Dependent Claim
11 words
The method of claim 6 in which the solvent comprises alcohol.
Claim 11
Dependent Claim
12 words
The method of claim 6 in which the solvent comprises diethylene glycol.
Claim 12
Dependent Claim
41 words
A new printing ink comprising a basic dye and a phenol salicylic acid formaldehyde condensation resin in solution in a solvent, said resin having been formed by oxalic acid catalysation and being characterized by a color not darker than about 4+.
Claim 13
Dependent Claim
41 words
A new printing ink comprising a basic dye and a phenol salicylic acid formaldehyde condensation resin in solution in a solvent, said resin having been formed by oxalic acid catalysation and being characterized by a color not darker than about 4+.
Claim 14
Dependent Claim
12 words
The ink of claim 9 in which the solvent comprises an alcohol.
Claim 15
Dependent Claim
12 words
The ink of claim 9 in which the solvent comprises diethylene glycol.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |