US4306875A
Expired / Lapsed
US
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Salts of basic dyes, preparation and uses of same
Assignee: Aziende Colori Nazionali Affini ACNA SpA
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Filing: 1980-08-05
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Granted: 1981-12-22
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Expires: 2000-08-05
Abstract
Abstract This invention relates to novel dye salts of basic dyes or basic optical brighteners and anionic esters of boric acid. The invention also includes the preparation of the aforementioned novel dye salts.
Inventors
- 👤 Francesco De Feo
- 👤 Adelio Basilico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:59
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0075; C09B67/0076; C09B69/00; C09B69/02; C09B69/06; D; D06; D06L; D06L4/00; D06L4/60; D06L4/607; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/919
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
71 words
New dye salts insoluble in water but soluble in polar organic and dipolar aprotic solvents, comprised in the general formula: ##STR3## in which the name chromogenic cation indicates a radical of an organic dye or of an optical brightener containing at least a basic-ionization group, n is an integer, higher than 1 indicating the structural units contained in the polymer of the boric ester, m is an integer not exceeding n.
Claim 2
Dependent Claim
71 words
New dye salts insoluble in water but soluble in polar organic and dipolar aprotic solvents, comprised in the general formula: ##STR3## in which the name chromogenic cation indicates a radical of an organic dye or of an optical brightener containing at least a basic-ionization group, n is an integer, higher than 1 indicating the structural units contained in the polymer of the boric ester, m is an integer not exceeding n.
Claim 3
Dependent Claim
54 words
New dye salts insoluble in water but soluble in polar organic and dipolar aprotic solvents according to claim 1, characterized in that the chromogenic cation belongs to the classes of the di- and triphenylmethanic, methinic, quinophthalonic, anthraquinonic, phthalocyaninic, azamethinic, azoic, naphthostyrylic, azinic, oxazinic, xantenic dyes or optical brighteners containing at least a basic-ionization group.
Claim 4
Dependent Claim
34 words
New dye salts according to claims 1 and 2, characterized in that the basic-ionization group is an aminic protonaccepting group or ions N + , S + , P + and O + .
Claim 5
Dependent Claim
79 words
New dye salts insoluble in water but soluble in polar and dipolar aprotic solvents, according to claim 1, characterized in that the boric ester is selected from the group consisting of the esters having general formulas: ##STR4## wherein R is the residue of an aliphatic alpha, beta-diol, of an aromatic ortho-diol or of an aliphatic alpha-hydroxy-carboxylic acid or an aromatic orthohydroxy-carboxylic acid, which can be further substituted by non-ionic groups, and n has the meaning specified in claim 1.
Claim 6
Dependent Claim
58 words
A process for preparing the dye salts of claims 1 or 2, characterized in that a solution of a dye or of an optical brightener containing at least one basic-ionization group, is reacted by a double exchange reaction with a solution of an anionic boric ester salified with an alkaline metal or with ammonia or its organic derivatives.
Claim 7
Dependent Claim
24 words
A process for preparing the dye salts of claims 1 or 2, wherein the dye or brightener has been salified with a conventional anion.
Claim 8
Dependent Claim
20 words
A process according to claim 5, characterized in that the solutions utilized to effect the double-exchange reaction are aqueous solutions.
Claim 9
Dependent Claim
30 words
A process according to claim 5, characterized in that the solutions employed to effect the double-exchange reaction are aqueous solutions containing polar organic or dipolar aprotic solvents miscible with water.
Claim 10
Dependent Claim
31 words
A method of dyeing acid-modified acrylonitrile polymers or copolymers or acid-modified synthetic fibers which comprises the addition of the dye salts of claim 1 to the dissolved polymer prior to spinning.
Claim 11
Dependent Claim
29 words
A method for effecting transfer printing on fabrics made of acid-modified acrylonitrile polymers or copolymer or acid-modified synthetic fibers by the use of the dye salts of claim 1.
Claim 12
Dependent Claim
21 words
A method for coloring plastic materials, enamels, lacquers and printing inks by the use of the dye salts of claim 1.
Claim 13
Dependent Claim
15 words
A method of dyeing paper by the use of the dye salts of claim 1.
Claim 14
Dependent Claim
16 words
Acid-modified acrylonitrile polymers or copolymers or synthetic materials dyed with the dye salts of claim 1.
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) | 1984-12-21 | 1985-06-22 | 1985-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-21 | 1989-06-22 | 1989-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-21 | 1993-06-22 | 1993-12-22 | $7700.00 | Window Closed / Lapsed |