US4351640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dye powder formulation
Assignee: BASF SE
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Filing: 1980-06-19
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Granted: 1982-09-28
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Expires: 2000-06-19
Abstract
Abstract A powder formulation of the dye of the formula ##STR1## which contains sodium chloride and a condensate of β-naphthalenesulfonic acid with formaldehyde, or a sulfomethylation product which is obtained by condensing phenol, formaldehyde and a sulfite or bisulfite in the presence of sodium hydroxide, using a molar ratio of phenol: formaldehyde: sulfite or bisulfite: sodium hydroxide of 1:1.0-4:0.3-1.6:0.05-0.5. The dye formulation is readily soluble in water and gives speck-free prints and dyeings, with a high color yield.
Inventors
- 👤 Ortwin Schaffer
- 👤 Manfred Herrmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:37
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02; C09B62/04; C09B62/08; C09B62/09; C09B67/00; C09B67/0071; C09B67/0072
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
89 words
A powder formulation of the dye of the formula ##STR4## which contains, based on (a+b+c), (a) from 10 to 65% by weight of the dye of the formula I, (b) from 5 to 25% by weight of sodium chloride, and (c) from 10 to 85% by weight of a condensate of β-naphthalenesulfonic acid and formaldehyde, or of a sulfomethylation product which is obtained by condensing phenol, formaldehyde and a sulfite or bisulfite, in the presence of sodium hydroxide, in a molar ratio of phenol:formaldehyde:sulfite or bisulfite:sodium hydroxide of 1:1.0-4:0.3-1.6:0.05-0.5.
Claim 2
Dependent Claim
89 words
A powder formulation of the dye of the formula ##STR4## which contains, based on (a+b+c), (a) from 10 to 65% by weight of the dye of the formula I, (b) from 5 to 25% by weight of sodium chloride, and (c) from 10 to 85% by weight of a condensate of β-naphthalenesulfonic acid and formaldehyde, or of a sulfomethylation product which is obtained by condensing phenol, formaldehyde and a sulfite or bisulfite, in the presence of sodium hydroxide, in a molar ratio of phenol:formaldehyde:sulfite or bisulfite:sodium hydroxide of 1:1.0-4:0.3-1.6:0.05-0.5.
Claim 3
Dependent Claim
27 words
A formulation as claimed in claim 1, which contains from 0 to 10% by weight, based on (a+b+c), of wetting agents, anti-dust agents or mixtures of these.
Claim 4
Dependent Claim
21 words
A formulation as claimed in claim 1 or 2, which contains from 45 to 65% by weight of the dye (I).
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) | 1985-09-27 | 1986-03-29 | 1986-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-27 | 1990-03-29 | 1990-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-27 | 1994-03-29 | 1994-09-28 | $7700.00 | Window Closed / Lapsed |