US4426203A
Expired / Lapsed
US
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Stable anhydrous textile assistant
Assignee: Novartis Corp
•
Filing: 1981-12-30
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Granted: 1984-01-17
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Expires: 2001-12-30
Abstract
Abstract The invention relates to a stable anhydrous textile assistant which comprises at least (A) an anionic surfactant, (B) an inorganic oxidizing agent, (C) a siloxane-oxyalkylene copolymer and, optionally, (D) a compound which combines with metal ions to form water-soluble colorless complexes, and/or (E) a polar organic solvent. The anionic surfactant (A) can also be combined with a non-ionic surfactant. The assistant mixture is used in particular for desizing cellulosic fibre materials by oxidation, preferably in combination with a bleaching process.
Inventors
- 👤 Heinz Abel
- 👤 Josef Oxe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:11
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/12; D06L1/14
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
67 words
A stable anhydrous textile assistant which comprises at least (A) an anionic surfactant of the formula R--O--(CH.sub.2 CH.sub.2 O).sub.m X wherein R is alkyl or alkenyl of 8 to 22 carbon atoms, o-phenylphenyl or alkylphenyl containing 4 to 16 carbon atoms in the alkyl moiety, X is a phosphoric acid radical, and m is 2 to 30; (B) an inorganic oxidizing agent, and (C) a siloxane-oxyalkylene copolymer.
Claim 2
Dependent Claim
67 words
A stable anhydrous textile assistant which comprises at least (A) an anionic surfactant of the formula R--O--(CH.sub.2 CH.sub.2 O).sub.m X wherein R is alkyl or alkenyl of 8 to 22 carbon atoms, o-phenylphenyl or alkylphenyl containing 4 to 16 carbon atoms in the alkyl moiety, X is a phosphoric acid radical, and m is 2 to 30; (B) an inorganic oxidizing agent, and (C) a siloxane-oxyalkylene copolymer.
Claim 3
Dependent Claim
24 words
An assistant according to claim 1 which additionally comprises, as component (D), a compound which combines with metal ions to form water-soluble colourless complexes.
Claim 4
Dependent Claim
16 words
An assistant according to claim 1 which additionally comprises, as component (E), a polar organic solvent.
Claim 5
Dependent Claim
15 words
An assistant according to claim 3 which comprises components (A), (B), (C), (D) and (E).
Claim 6
Dependent Claim
23 words
An assistant according to claim 1, wherein the surfactant is in the form of the free acid, ammonium salt or alkali metal salt.
Claim 7
Dependent Claim
34 words
An assistant according to claim 5, R is octylphenyl or nonylphenyl and m is 2 to 15, said surfactant being in the form of the free acid or of the sodium or ammonium salt.
Claim 8
Dependent Claim
19 words
An assistant according to claim 1, wherein component (A) is a mixture of an anionic and a non-ionic surfactant.
Claim 9
Dependent Claim
15 words
An assistant according to claim 1, wherein the oxidising agent is an inorganic peroxide compound.
Claim 10
Dependent Claim
13 words
An assistant according to claim 8, wherein the oxidising agent is sodium persulfate.
Claim 11
Dependent Claim
25 words
An assistant according to claim 1, wherein component (C) is a polyether siloxane having a cloud point in the range from 20° to 70° C.
Claim 12
Dependent Claim
19 words
An assistant according to claim 10, wherein the polyether siloxane has a cloud point of 25° to 50° C.
Claim 13
Dependent Claim
85 words
An assistant according to claim 1 which comprises at least (Aa) a phosphoric acid ester, or salt thereof, of a polyadduct of 2 to 20 moles of ethylene oxide and 1 mole of a fatty alcohol containing 8 to 18 carbon atoms or 1 mole of a p-alkylphenol containing 4 to 16 carbon atoms in the alkyl moiety, or a mixture of said acid ester, (Bb) sodium persulfate, and (Cc) a siloxane-oxyalkylene copolymer having a cloud point in the range from 25° to 50° C.
Claim 14
Dependent Claim
24 words
An assistant according to claim 2, wherein component (D) is a basic nitrogen compound which contains at least two nitrogen-bonded phosphonatomethyl or carboxymethyl groups.
Claim 15
Dependent Claim
17 words
An assistant according to claim 13, wherein component (D) is ethylenediaminetetraacetic acid or a water-soluble salt thereof.
Claim 16
Dependent Claim
12 words
An assistant according to claim 3, wherein component (E) is propylene glycol.
Claim 17
Dependent Claim
57 words
An assistant according to claim 1, which comprises, based on the weight of the total mixture, 5 to 60% by weight of component (A) 10 to 80% by weight of component (B) 0.5 to 10% by weight of component (C) 0 to 50% by weight of component (D), and 0 to 50% by weight of component (E).
Claim 18
Dependent Claim
28 words
An assistant according to claim 16, wherein component (D) is present in an amount of the 10 to 25% by weight, based on the weight of the mixture.
Claim 19
Dependent Claim
28 words
An assistant according to claim 16, wherein component (E) is present in an amount of the 10 to 40% by weight, based on the weight of the mixture.
Claim 20
Dependent Claim
83 words
A process for desizing cellulosic, material which comprises treating said material, in aqueous alkaline medium, in the presence of an assistant which comprises at least (A) an anionic surfactant of the formula R--O--(CH.sub.2 CH.sub.2 O).sub.m X wherein R is alkyl or alkenyl of 8 to 22 carbon atoms, o-phenylphenyl or alkylphenyl containing 4 to 16 carbon atoms in the alkyl moiety, X is a phosphoric acid radical, and m is 2 to 30; (B) an inorganic oxidizing agent, and (C) a siloxane-oxyalkylene copolymer.
Claim 21
Dependent Claim
83 words
A process for desizing cellulosic, material which comprises treating said material, in aqueous alkaline medium, in the presence of an assistant which comprises at least (A) an anionic surfactant of the formula R--O--(CH.sub.2 CH.sub.2 O).sub.m X wherein R is alkyl or alkenyl of 8 to 22 carbon atoms, o-phenylphenyl or alkylphenyl containing 4 to 16 carbon atoms in the alkyl moiety, X is a phosphoric acid radical, and m is 2 to 30; (B) an inorganic oxidizing agent, and (C) a siloxane-oxyalkylene copolymer.
Claim 22
Dependent Claim
31 words
A process according to claim 19, wherein the assistant additionally comprises (D) a compound which combines with metal ions to form a water-soluble colorless complex and (E) a polar organic solvent.
Claim 23
Dependent Claim
21 words
A process according to claim 19, wherein the treatment liquor contains the assistant in an amount of 2 to 30 g/l.
Claim 24
Dependent Claim
29 words
A process according to claim 19, which comprises applying the treatment liquor continuously to the cellulosic material, squeezing out said material, and then subjecting it to a steam treatment.
Claim 25
Dependent Claim
15 words
A process according to claim 19, comprising the additional step of bleaching the cellulosic material.
Claim 26
Dependent Claim
19 words
A process according to claim 23, wherein the bleaching step is carried out during or after the desizing step.
Claim 27
Dependent Claim
20 words
A process according to claim 24, wherein the bleaching step is carried out by means of a cold pad-batch treatment.
Claim 28
Dependent Claim
19 words
A process according to claim 23, wherein the bleaching step is carried out in the presence of hydrogen peroxide.
Claim 29
Dependent Claim
37 words
A process according to claim 23, wherein the bleaching step is carried out in the presence of magnesium chloride and a non-ionic surfactant, or magnesium chloride and a mixture of a non-ionic surfactant and an anionic surfactant.
Claim 30
Dependent Claim
56 words
A process according to claim 27, wherein the non-ionic surfactant is a polyadduct of 2 to 15 moles of ethylene oxide and 1 mole of a fatty alcohol of 8 to 22 carbon atoms or 1 mole of an alkylphenol having 4 to 12 carbon atoms in the alkyl moiety, or a mixture of said polyadducts.
Claim 31
Dependent Claim
24 words
A process according to claim 27, wherein the anionic surfactant is a sulfonated 1-benzyl-2-alkylbenzimidazole having 8 to 22 carbon atoms in the alkyl moiety.
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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) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |