Patent US3773509A successfully refreshed from Google Patents.
US3773509A
Expired / Lapsed
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Mordanting process for color printing materials
Assignee: Mitsubishi Paper Mills Ltd
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Filing: 1971-03-09
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Granted: 1973-11-20
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Expires: 1991-03-09
Abstract
Abstract A mordanting process for color printing materials which comprises using a dispersion of fine coacervate particles prepared by reacting a polymer having a cationic nitrogencontaining group which acts as a mordant for a dye having an anionic group and diffusible in an aqueous medium and a phthalic acid derivative of gelatin, polyvinyl alcohol or starch in an aqueous binder. Examples of said polymer having the nitrogencontaining group are poly-2-vinyl pyridine, methyl ptoluenesulfonate of poly-4-vinyl pyridine, poly-4-vinylbenzyltrimethyl ammonium chloride, poly-4-vinylbenzyl-triethanol ammonium chloride, benzyl chloride of polymethacrylic acid dimethylamino ethanol ester, acetate of partially amino guanidized polyvinyl methyl ketone, and aminoguanidized dialdehyde starch.
Inventors
- 👤 Y Ohyama
- 👤 S Miyazawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:06
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/42; G03C8/52; G03C8/56; C; C08; C08F; C08F8/00; G03C1/00; G03C1/76; G03C1/825; G03C1/835; G03C7/00; G03C7/28; Y; Y10; Y10S; Y10S430/00; Y10S430/142
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
41 words
The process of claim 1 wherein part of the phthalic acid or phthalic anhydride used to form the monoamide is replaced with maleic acid or acetic acid, the protective colloid is a water-soluble polymer and the surface is a photographic layer.
Claim 2
Dependent Claim
71 words
A mordanting process for fixing acid dyes onto a photographic emulsion layer which comprises using the product prepared by complexing in an aqueous medium containing a protective colloid a reaction product obtained by monoamidifying gelatin with phthalic acid and comprising the free acid group with benzyl chloride salt of polymethacrylic acid dimethylaminoethanol ester to form a coacervate polymeric mordant, said coacervate mordant having particle size of from 0.1 to 10 microns.
Claim 3
Dependent Claim
62 words
A mordanting process for fixing acid dyes onto a photographic emulsion layer which comprises using the product prepared by complexing in an aqueous medium containing a protective colloid, a reaction product obtained by monoesterifying polyvinyl alcohol with a mixture of phthalic anhydride and maleic anhydride, said complexing monoester modified polyvinyl alcohol with poly-2-vinyl pyridine, said complex having particle sizes of 2-3 microns.
Claim 4
Dependent Claim
61 words
A mordanting process for fixing acid dyes onto a photographic emulsion layer which comprises using the coacervate mordant prepared by complexing in an aqueous medium containing a protective colloid, a reaction product obtaining by monoesterifying a soluble starch with phthalic anhydride and complexing the carboxyl groups with aminoguanidized dialdehyde starch, said complex having particle size of from 0.1 to 10 microns.
Claim 5
Dependent Claim
49 words
The process of claim 1 wherein said polymer having the nitrogen-containing group is selected from the group consisting of poly-2-vinyl pyridine, methyl p-toluenesulfonate of poly-4-vinyl pyridine, poly-4-vinylbenzyl-trimethyl ammonium chloride, poly-4-vinylbenzyl-triethanol ammonium chloride, benzyl chloride of polymethacrylic acid dimethylamino ethanol ester or, acetate of partially amino guanidized polyvinyl methyl ketone.
Claim 6
Dependent Claim
57 words
A mordanting process for fixing acid dyes onto a photographic emulsion layer which comprises using the product prepared by complexing in an aqueous medium containing a protective colloid, a reaction product obtained by monoesterifying polyvinyl alcohol with phthalic anhydride and complexing said monoester modified polyvinyl alcohol with poly-2-vinyl pyridine, said complex having particle sizes of 2-3 microns.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |