US4125413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersion of polycyclic vat-dye pigment with N,N'-disubstituted diaminostilbene sulfonic acid fluidizing agent
Assignee: Imperial Chemical Industries Ltd
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Filing: 1977-05-09
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Granted: 1978-11-14
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Expires: 1997-05-09
Abstract
Abstract The present invention relates to a fluidizing agent which is a substituted ammonium salt of an N,N'-disubstituted diaminostilbene sulphonic acid wherein there is at least one organic radical containing at least 2 carbon atoms attached to the nitrogen atom of the substituted ammonium ion. The agent is useful for improving the fluidity of a dispersion of a polycyclic vat dye pigment in an organic liquid.
Inventors
- 👤 Peter K. Davies
- 👤 James F. Stansfield
- 👤 Arthur Topham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:25
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0033; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/40; C07D251/48; C07D251/52; C07D251/54; C09B67/006; C09K; C09K23/00; C09K23/34
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
62 words
A dispersion of a polycyclic vat-dye pigmnt in an organic liquid containing a polymeric or resinous dispersion agent and a fluidising agent which is a substituted ammonium salt of a N,N'-disubstituted diaminostilbene sulphonic acid wherein the substituted ammonium ion contains a total of from 2 to 80 carbon atoms in from 1 to 4 organic radicals attached to the central nitrogen atom.
Claim 2
Dependent Claim
62 words
A dispersion of a polycyclic vat-dye pigmnt in an organic liquid containing a polymeric or resinous dispersion agent and a fluidising agent which is a substituted ammonium salt of a N,N'-disubstituted diaminostilbene sulphonic acid wherein the substituted ammonium ion contains a total of from 2 to 80 carbon atoms in from 1 to 4 organic radicals attached to the central nitrogen atom.
Claim 3
Dependent Claim
23 words
A dispersion according to claim 1 wherein there is a total of from 16 to 80 carbon atoms in the substituted ammonium ion.
Claim 4
Dependent Claim
30 words
A dispersion according to claim 1 wherein there is a total of from 19 to 40 carbon atoms in 3 or 4 organic chains attached to the central nitrogen atom.
Claim 5
Dependent Claim
28 words
A dispersion according to claim 1 wherein at least one of the organic radicals is an alkyl or an alkenyl group containing from 12 to 20 carbon atoms.
Claim 6
Dependent Claim
97 words
A dispersion according to claim 1 wherein the N,N'-disubstituted diaminostilbene sulphonic acid comprises a single diaminostilbene sulphonic acid substituted in each amino group by a 4:6-disubstituted triazine-2-yl radical having the formula: ##STR5## wherein X and Y are each independently selected from --S--; --O--; --NH--; and --NR-- wherein R is alkyl, A is phenyl or substituted phenyl, B is selected from phenyl, substituted phenyl, alkyl and substituted alkyl, and where Y is --NR--, Y and B together may form an optionally substituted aromatic or aliphatic ring provided that both A and B are free from sulphonic acid groups.
Claim 7
Dependent Claim
41 words
A dispersion according to claim 5 wherein the N,N'-disubstituted diaminostilbene sulphonic acid comprises a chain of two or more diaminostilbene sulphonic acid units linked together by triazinylene radicals and terminated at either end by a 4-6 disubstituted triazine-2-yl radical as defined.
Claim 8
Dependent Claim
17 words
A dispersion according to claim 1 wherein the pigment is selected from flavanthrone, indanthrone and dibromo anthanthrone.
Claim 9
Dependent Claim
22 words
A dispersion according to claim 1 wherein the organic liquid is selected from aromatic hydrocarbons, aromatic chlorinated hydrocarbons and aliphatic chlorinated hydrocarbons.
Claim 10
Dependent Claim
73 words
A dispersion according to claim 1 wherein the polymeric or resinous dispersing agent is a compound of the formula: ##STR6## wherein Ar is an aromatic group, n is 0 or 1, from 2 to 3 R groups are individually hydrogen, methyl and ethyl and the remaining R group or groups individually or the remaining R -- C -- C -- R in combination provides a solvatable chain-like component of at least 12 links.
Claim 11
Dependent Claim
38 words
A dispersion of flavanthrone in xylene containing dissolved therein (i) a copolymer of styrene ethylhexylacrylate, hydroxyisopropylmethacrylate, methacrylamide and glycidylmethacrylate in the proportions 26:40:25:5:4 by weight esterified with p-aminobenzoic acid, and (ii) the cetyl trimethylammonium salt of 4,4'-bis-(4-anilino-6-β-hydroxyethylamino-s-triazin-2-ylamino)stilbene-2,2'-disulphonic acid.
Claim 12
Dependent Claim
38 words
A dispersion of flavanthrone in xylene containing dissolved therein (i) a copolymer of styrene ethylhexylacrylate, hydroxyisopropylmethacrylate, methacrylamide and glycidylmethacrylate in the proportions 26:40:25:5:4 by weight esterified with p-aminobenzoic acid, and (ii) the cetyl trimethylammonium salt of 4,4'-bis-(4-anilino-6-β-hydroxyethylamino-s-triazin-2-ylamino)stilbene-2,2'-disulphonic acid.
References Cited (Backward Citations)
US2745830A
Cited
US3193548A
Cited
US2846397A
Cited
US3743526A
Cited
US4001035A
Cited
DE2541483A1
Cited
US4057436A
Cited
US3992145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-13 | 1982-05-15 | 1982-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-13 | 1986-05-15 | 1986-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-13 | 1990-05-15 | 1990-11-14 | $7700.00 | Window Closed / Lapsed |