US3790344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agents for improving the fastness to wet processing
Assignee: Bayer AG
•
Filing: 1970-11-30
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Granted: 1974-02-05
•
Expires: 1990-11-30
Abstract
Abstract Process for improving the fastness to wet processing of dyeings obtained on synethetic polyamides with anionic and/or cationic dyestuffs wherein the dyeings are aftertreated with aqueous liquors containing condensation products of a higher molecular weight prepared from (a) 4,4''-dioxydiphenyl-sulphon, (b) formaldehyde and (c) phenol sulphonic acid, naphthalene sulphonic acid, sodium sulfite or sodium hydrogen sulfite, using the components (a), (b) and (c) in a molecular ratio of 1:0.7-1.1: 0.7-0.2.
Inventors
- 👤 G Frickenhaus
- 👤 E Schuffenhauer
- 👤 M Meister
- 👤 H Pantke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:46
CPC Classifications
C; C08; C08G; C08G16/00; C08G16/02; C08G16/0212; C08G16/0218; C08G16/0237; C08G8/00; C08G8/04; C08G8/08; C08G8/24; D; D06; D06P; D06P1/00; D06P1/44; D06P1/62; D06P1/621; D06P1/622; D06P1/625; D06P1/673; D06P1/67333; D06P1/6735; D06P5/00; D06P5/02; D06P5/04; D06P5/08
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
26 words
The process of claim 1 in which said condensation product of higher molecular weight comprises components (a), (b) and (c) in a molecular ratio of 1:0.7-1.1:0.5-0.25.
Claim 2
Dependent Claim
13 words
The process of claim 2 in which component (c) is phenol sulfonic acid.
Claim 3
Dependent Claim
20 words
The process of claim 1 in which the aqueous liquors for after-treatment contain electrolyte in addition to said condensation products.
Claim 4
Dependent Claim
26 words
The process of claim 4 in which said electrolyte is an alkali metal, an alkaline earth metal or a heavy metal salt of an organic acid.
Claim 5
Dependent Claim
27 words
The process of claim 4 in which said electrolyte is a sodium or potassium chloride or cadmium, zinc or magnesium salt of hydrochloric, sulfuric or acetic acid.
Claim 6
Dependent Claim
17 words
The process of claim 4 in which magnesium sulfate or zinc acetate is used as said electrolyte.
Claim 7
Dependent Claim
26 words
The process of claim 1 in which said condensation product of higher molecular weight is soluble in water only with heating and forms an opalescent solution.
Claim 8
Dependent Claim
50 words
The process of claim 1 in which the amount of said condensation product of higher molecular weight in the treating liquor is 0.5-5 per cent by weight of the synthetic polyamide material and in which the treating liquor is applied to increase the weight the synthetic polyamide by 70-140 percent.
Claim 9
Dependent Claim
97 words
Synthetic polyamide textile material having good wet processing fastness comprising polyamide textile material dyed with anionic dyestuff, cationic dyestuff or mixture thereof and after treated by applying, in an aqueous liquor, an effective amount of a formaldehyde condensation product to increase the degree of wet processing fastness; said formaldehyde condensation product comprising an alkali catalyzed condensation product of higher molecular weight prepared from (a) 4,4''-dioxydiphenyl-sulfone, (b) formaldehyde and (c) phenol sulfonic acid or naphthalene sulfonic acid, using the components (a), (b) and (c) in a molecular ratio of 1:0.7-1.1:0.7-0.2; and drying the treated synthetic polyamide textile material.
Claim 10
Dependent Claim
31 words
The treated synthetic polyamide textile material of claim 10 in which said condensation product of higher molecular weight comprises components (a), (b) and (c) in a molecular ratio of 1: 0.7-1.1:0.5-0.25.
Claim 11
Dependent Claim
17 words
The treated synthetic polyamide textile material of claim 11 in which component (c) is phenol sulfonic acid.
Claim 12
Dependent Claim
24 words
The treated synthetic polyamide textile material of claim 11 in which the aqueous liquors for after-treatment contain electrolyte in addition to said condensation products.
Claim 13
Dependent Claim
30 words
The treated synthetic polyamide textile material of claim 13 in which said electrolyte is an alkali metal, an alkaline earth metal or a heavy metal salt of an organic acid.
Claim 14
Dependent Claim
32 words
The treated synthetic polyamide textile material of claim 13 in which said electrolyte is a sodium or potassium chloride or a cadmium, zinc or magnesium salt of hydrochloric, sulfuric or acetic acid.
Claim 15
Dependent Claim
21 words
The treated synthetic polyamide textile material of claim 13 in which magnesium sulfate or zinc acetate is used as said electrolyte.
Claim 16
Dependent Claim
30 words
The treated synthetic polyamide textile material of claim 10 in which said condensation product of Higher molecular weight is soluble in water only with heating and forms an opalescent solution.
Claim 17
Dependent Claim
54 words
The treated synthetic polyamide textile material of claim 10 in which the amount of said condensation product of higher molecular weight in the aqueous liquor is 0.5-5 percent by weight of the synthetic polyamide material and in which the aqueous liquor is applied to increase the weight of the synthetic polyamide by 70-140 percent.
References Cited (Backward Citations)
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US3065039A
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US3290111A
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US3663157A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |