US3031254A - Process of delustering acetone-soluble cellulose acetate textile with a hot soap solution containing hydrogen peroxide - Google Patents
Process of delustering acetone-soluble cellulose acetate textile with a hot soap solution containing hydrogen peroxide Download PDFInfo
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- US3031254A US3031254A US533506A US53350655A US3031254A US 3031254 A US3031254 A US 3031254A US 533506 A US533506 A US 533506A US 53350655 A US53350655 A US 53350655A US 3031254 A US3031254 A US 3031254A
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- US
- United States
- Prior art keywords
- hydrogen peroxide
- cellulose acetate
- delustring
- soap
- acetone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims description 56
- 229920002301 cellulose acetate Polymers 0.000 title claims description 20
- 239000004753 textile Substances 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 9
- 239000008149 soap solution Substances 0.000 title description 11
- 239000000463 material Substances 0.000 claims description 26
- 239000000344 soap Substances 0.000 claims description 16
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 238000011282 treatment Methods 0.000 description 20
- 239000004744 fabric Substances 0.000 description 9
- VQLYBLABXAHUDN-UHFFFAOYSA-N bis(4-fluorophenyl)-methyl-(1,2,4-triazol-1-ylmethyl)silane;methyl n-(1h-benzimidazol-2-yl)carbamate Chemical compound C1=CC=C2NC(NC(=O)OC)=NC2=C1.C=1C=C(F)C=CC=1[Si](C=1C=CC(F)=CC=1)(C)CN1C=NC=N1 VQLYBLABXAHUDN-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910021653 sulphate ion Inorganic materials 0.000 description 4
- -1 alkali metal salt Chemical class 0.000 description 3
- 239000003599 detergent Substances 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- MQWCXKGKQLNYQG-UHFFFAOYSA-N 4-methylcyclohexan-1-ol Chemical compound CC1CCC(O)CC1 MQWCXKGKQLNYQG-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- 229920013683 Celanese Polymers 0.000 description 1
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical class [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- HVWGGPRWKSHASF-UHFFFAOYSA-N Sulfuric acid, monooctadecyl ester Chemical compound CCCCCCCCCCCCCCCCCCOS(O)(=O)=O HVWGGPRWKSHASF-UHFFFAOYSA-N 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- WUOACPNHFRMFPN-UHFFFAOYSA-N alpha-terpineol Chemical compound CC1=CCC(C(C)(C)O)CC1 WUOACPNHFRMFPN-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- SQIFACVGCPWBQZ-UHFFFAOYSA-N delta-terpineol Natural products CC(C)(O)C1CCC(=C)CC1 SQIFACVGCPWBQZ-UHFFFAOYSA-N 0.000 description 1
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 description 1
- QQBMCNRNUZBNNF-BZKIHGKGSA-L disodium;hexadecyl sulfate;[(z)-octadec-9-enyl] sulfate Chemical compound [Na+].[Na+].CCCCCCCCCCCCCCCCOS([O-])(=O)=O.CCCCCCCC\C=C/CCCCCCCCOS([O-])(=O)=O QQBMCNRNUZBNNF-BZKIHGKGSA-L 0.000 description 1
- MOTZDAYCYVMXPC-UHFFFAOYSA-N dodecyl hydrogen sulfate Chemical compound CCCCCCCCCCCCOS(O)(=O)=O MOTZDAYCYVMXPC-UHFFFAOYSA-N 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- LPTIRUACFKQDHZ-UHFFFAOYSA-N hexadecyl sulfate;hydron Chemical compound CCCCCCCCCCCCCCCCOS(O)(=O)=O LPTIRUACFKQDHZ-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000010665 pine oil Substances 0.000 description 1
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 229940045872 sodium percarbonate Drugs 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229940116411 terpineol Drugs 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with hydrogen peroxide or peroxides of metals; with persulfuric, permanganic, pernitric, percarbonic acids or their salts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
- Y10S8/06—Resin bleach
Definitions
- the preferred delustring bath is an aqueous soap solution containing about 5 grams of soap per litre.
- Hydrogen peroxide is however an effective delustring accelerator for lower or higher concentrations of soap, e.g. con- Fatented Apr. 24, 1962 centrations down to 1 or 2 grams per litre or up to 8 or 10 grams per litre.
- the concentration of hydrogen peroxide in the soap solution may vary within quite wide limits. Excellent results can be obtained by using from 1 to 5 ccs. per
- the hydrogen ion concentration of the delustring bath is of some importance for best results. We find that the delustring efiect increases as the pH value of the bath increases from about 7.0 to about 9.5 but at higher pH value tends to fall off somewhat. It is preferred to effect the delustring treatment at a pH value of 8.5 to 9.
- the treatment In the case of treating cellulose acetate fabric it is preferred to apply the treatment to material which is substantially free from size. A soap delustring bath may then be used a number of times if hydrogen peroxide is added, after each batch of material has been treated, to bring the concentration of hydrogen peroxide back to the desired level.
- the hydrogen peroxide initially present is by no means all decomposed during a delustring treatment of 1 /2 hours at 99 C.
- the treatment may be applied to cellulose acetate fabrics carrying the weaving size, the treatment then serving both to remove size from the material and to effect delustring. In this case it is preferred to use a fresh soap bath for each batch of material since otherwise size and other products accumulate in the bath and appear to diminish the delustring action.
- a scouring treatment for example with an alkali metal salt of a long chain alkyl sulphate type of detergent, for the purpose of removing any unwanted fatty acid or difficultly soluble metallic soap from the material.
- While the process can be used for the treatment of cellulose acetate yarns it is of most value for the treatment of fabrics.
- the latter may be subjected to the action of the delustring bath in any convenient way, for example by suspending them in the form of hanks of fabric in the delustring liquor.
- Aqueous solutions of detergent cationic or anionic surface-active agents other than sodium or other alkali metal soaps of fatty acids may likewise have their delustring action increased by means of hydrogen peroxide.
- Such surface-active agents may be quaternary ammonium compounds (in the form of water-soluble salts) containing an unsubstituted alkyl group having a chain of at least 10 successive carbon atoms united by carbon to carbon linkages, for example cetyl-trimethyl-ammonium chloride or bromide.
- sulphates or acid phosphates in the form of water-soluble salts of monohydroxylated aliphatic hydrocarbons having a chain of at least 10 successive carbon atoms united by carbon to carbon linkages counting from and including the carbon atom carrying the hydroxyl group, for example lauryl sulphate, palmityl sulphate, stearyl sulphate, or olelyl sulphate, or the sulphate of a mixture of such alcohols as can be obtained by reduction of the esters of the mixture of fatty acids found in cocoanut oil.
- Detergent of the alkylarylsulphonate type may likewise be employed.
- Such surface-active agents are, however, generally inferior to soaps as delustring agents for cellulose acetate and when used in the presence of hydrogen peroxide are likewise inferior to aqueous solutions of soap used in the presence of hydrogen peroxide.
- Example A loom state satin fabric consisting entirely of yarns of acetone-soluble cellulose acetate of a kind which cannot be completely delustred by treatment for 1 /2 hours in a 5 grams per litre soap solution at 99 C., is desized by a treatment for /2 hour at 85 C. in a 5 grams per litre solution of soap-flakes in water.
- the de-sized material in the form of a hank, is then immersed in an aqueous bath containing 5 grams per litre of soap-flakes and 1 cc. per litre of hydrogen peroxide (130 volumes). The temperature of the bath is then raised to 99 C. and is maintained at this for 1 /2 hours, the hank of fabric being turned at intervals to ensure even treatment.
- the material is then lifted from the delustring bath and scoured at 65 C. for 30 minutes in an aqueous bath containing per liter 2 cc. of ammonia and 0.2 gram of Pentrone T, a fatty alcohol sulphate. This operation may be carried out on a winch. Finally the material is washed oil, hydro-cxtracted and dried on a pin stenter.
- the fabric is thus given a dull finish which is much duller than is obtained if the delustring operation is effected with aqueous soap solution only without the addition of hydrogen peroxide.
- the invention is primarily of value in the delustring of textile material of acetone-soluble cellulose acetate, it may be used in connection with the delustring of textile material of other types of cellulose acetate *2: which are susceptible to reduction of lustre by hot aqueous treatments, for example to textile materials of this kind of which the cellulose acetates are of acetyl values ranging up to that of a cellulose triacetate.
- the new process may also be applied for the delustring of cellulose acetate in other forms, .for example foils or films of acetone soluble cellulose acetate.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Description
3 031 254 PROCESS OF DELUST ERING ACETONE-SOLUBLE CELLULGSE ACETATE TEXTILE WITH A HOT SOAP SOLUTION CONTAINING HYDROGEN EEROXIDE Dennis Grady, Harold Bates, and James Wotherspoon Fisher, Spondon, near Derby, England, assignors to British Celanese Limited, a corporation of Great Britain No Drawing. Filed Sept. 9, 1955, Ser. No. 533,506 Claims priority, application Great Britain Oct. 1, 1954 3 Claims. (Cl. 8-431) This invention relates to the treatment of textile and other materials of cellulose acetate for the purpose of effecting a reduction in their lustre.
It is well known that the lustre of bright textile materials of acetone-soluble cellulose acetate can be reduced by subjecting the material to a suitable hot aqueous treatment. For this purpose treatment with an aqueous soap solution at or near the boil is largely employed commercially. The ease with which loss of lustre takes place varies somewhat according to the particular acetonesoluble cellulose acetate of the material. Some materials lose lustre relatively easily and can be given a more or less completely mat appearance by a treatment for 1 /2 hours in a 5 gram per litre soap solution at 99 C. Others are somewhat less delustred by such a treatment but have the advantage that when a bright finish is required they can readily be dyed in the soap baths conventionally used for dyeing cellulose acetate at temperatures up to perhaps 85 C. with little risk of loss of lustre.
Various substances have been proposed for addition to the aqueous soap baths in order to accelerate the delustring action of the latter or to permit a greater reduction of lustre. Examples of such substances are phenol, pine oil, methylcyclohexanol, terpineol and naphthalene but none are entirely satisfactory. Some are not effective to a worthwhile extent, some add unreasonably to the cost of the process, some result in a very considerable loss in the strength of the material while some, for example phenol and naphthalene, are difficult to remove to the extent necessary if the material is not to have an unwanted odour.
We have now found that hydrogen peroxide can be used to increase the delustring action of hot aqueous delustring liquids on textile and other material of acetonesoluble cellulose acetate. The material may be subjected to the action of the hydrogen peroxide before the termination of delustring by the liquid. Thus we have found that material which has been treated with aqueous hydrogen peroxide, for example hydrogen peroxide in aqueous soap solution at 65 (3., loses lustre more rapidly than the untreated material when it is subjected to an aqueous soap solution at or near the boil. We have obtained the best results however by simply including hydrogen peroxide in the hot aqueous delustring bath itself. Thus by treatment at or near the boil (97 to 100 C.), e.g. at 99 C., for 1 /2 hours in a 5 grams per litre soap solution to which has been added 1 cc. per litre of hydrogen peroxide (130 volumes) a full delustre can be obtained on a bright cellulose acetate yarn or fabric, eg a satin fabric, which is only partially delustred by a similar treatment omitting the hydrogen peroxide.
The use of hydrogen peroxide in this way results in a product of acceptable strength and does not impart unwanted odour. Further, the material is simultaneously bleached so that a separate bleaching operation is unnecessary.
The preferred delustring bath is an aqueous soap solution containing about 5 grams of soap per litre. Hydrogen peroxide is however an effective delustring accelerator for lower or higher concentrations of soap, e.g. con- Fatented Apr. 24, 1962 centrations down to 1 or 2 grams per litre or up to 8 or 10 grams per litre.
The concentration of hydrogen peroxide in the soap solution may vary within quite wide limits. Excellent results can be obtained by using from 1 to 5 ccs. per
liter of hydrogen peroxide volumes). Lower concentrations can be used, for example 0.75 cc. per litre and satisfactory results obtained, but concentrations as low as 0.5 cc. per litre generally lead to decidedly inferior results.
The hydrogen ion concentration of the delustring bath is of some importance for best results. We find that the delustring efiect increases as the pH value of the bath increases from about 7.0 to about 9.5 but at higher pH value tends to fall off somewhat. It is preferred to effect the delustring treatment at a pH value of 8.5 to 9.
In the case of treating cellulose acetate fabric it is preferred to apply the treatment to material which is substantially free from size. A soap delustring bath may then be used a number of times if hydrogen peroxide is added, after each batch of material has been treated, to bring the concentration of hydrogen peroxide back to the desired level. The hydrogen peroxide initially present is by no means all decomposed during a delustring treatment of 1 /2 hours at 99 C. If desired, however, the treatment may be applied to cellulose acetate fabrics carrying the weaving size, the treatment then serving both to remove size from the material and to effect delustring. In this case it is preferred to use a fresh soap bath for each batch of material since otherwise size and other products accumulate in the bath and appear to diminish the delustring action. If desired, after delustring the material in the manner described, it may be given a scouring treatment, for example with an alkali metal salt of a long chain alkyl sulphate type of detergent, for the purpose of removing any unwanted fatty acid or difficultly soluble metallic soap from the material.
While the process can be used for the treatment of cellulose acetate yarns it is of most value for the treatment of fabrics. The latter may be subjected to the action of the delustring bath in any convenient way, for example by suspending them in the form of hanks of fabric in the delustring liquor.
It is surprising that the hydrogen peroxide is so efiec tive in accelerating the delustring action of the hot aqueous liquids on acetone-soluble cellulose acetate since we find that other oxidising bleaching agents seem to have little effect or very much less effect on the rate of delustring. This applies for instance to sodium percarbonate and to sodium hypochlorite.
We do not exclude the use of hydrogen peroxide produced in the delustring bath by suitable means.
Aqueous solutions of detergent cationic or anionic surface-active agents other than sodium or other alkali metal soaps of fatty acids may likewise have their delustring action increased by means of hydrogen peroxide. Such surface-active agents may be quaternary ammonium compounds (in the form of water-soluble salts) containing an unsubstituted alkyl group having a chain of at least 10 successive carbon atoms united by carbon to carbon linkages, for example cetyl-trimethyl-ammonium chloride or bromide. Again they may be acid sulphates or acid phosphates (in the form of water-soluble salts) of monohydroxylated aliphatic hydrocarbons having a chain of at least 10 successive carbon atoms united by carbon to carbon linkages counting from and including the carbon atom carrying the hydroxyl group, for example lauryl sulphate, palmityl sulphate, stearyl sulphate, or olelyl sulphate, or the sulphate of a mixture of such alcohols as can be obtained by reduction of the esters of the mixture of fatty acids found in cocoanut oil. Detergent of the alkylarylsulphonate type may likewise be employed. Such surface-active agents are, however, generally inferior to soaps as delustring agents for cellulose acetate and when used in the presence of hydrogen peroxide are likewise inferior to aqueous solutions of soap used in the presence of hydrogen peroxide.
The invention is illustrated by the following example:
Example A loom state satin fabric consisting entirely of yarns of acetone-soluble cellulose acetate of a kind which cannot be completely delustred by treatment for 1 /2 hours in a 5 grams per litre soap solution at 99 C., is desized by a treatment for /2 hour at 85 C. in a 5 grams per litre solution of soap-flakes in water. The de-sized material, in the form of a hank, is then immersed in an aqueous bath containing 5 grams per litre of soap-flakes and 1 cc. per litre of hydrogen peroxide (130 volumes). The temperature of the bath is then raised to 99 C. and is maintained at this for 1 /2 hours, the hank of fabric being turned at intervals to ensure even treatment. The material is then lifted from the delustring bath and scoured at 65 C. for 30 minutes in an aqueous bath containing per liter 2 cc. of ammonia and 0.2 gram of Pentrone T, a fatty alcohol sulphate. This operation may be carried out on a winch. Finally the material is washed oil, hydro-cxtracted and dried on a pin stenter.
The fabric is thus given a dull finish which is much duller than is obtained if the delustring operation is effected with aqueous soap solution only without the addition of hydrogen peroxide.
Though the invention is primarily of value in the delustring of textile material of acetone-soluble cellulose acetate, it may be used in connection with the delustring of textile material of other types of cellulose acetate *2: which are susceptible to reduction of lustre by hot aqueous treatments, for example to textile materials of this kind of which the cellulose acetates are of acetyl values ranging up to that of a cellulose triacetate. The new process may also be applied for the delustring of cellulose acetate in other forms, .for example foils or films of acetone soluble cellulose acetate.
Having described our invention what we desire to secure by Letters Patent is:
1. In a process wherein textile material of acetonesoluble cellulose acetate is delustred by the action of a hot aqueous solution of soap the solution having a pH value of 7 to 9.5, increasing the delustring action of the solution by including hydrogen peroxide therein in an amount per litre equivalent to from 1 to 5 ccs. of hydrogen peroxide of 130 volume strength.
2. Process according to claim 1 in which said hot aqueous solution of soap has 1 to 10 grams of soap per litre and is at a temperature of 97 to 100 C.
3. Process according to claim 1 in which said hot aqueous solution of soap has about 5 grams of soap per litre, a pH of 8.5 to 9 and a temperature of 97 to 100 C. in which said treatment has a duration of about 1 /2 hours and in which said solution contains per litre hydrogen peroxide equivalent to about 1 cc. of hydrogen peroxide of volume strength.
References Cited in the file of this patent UNITED STATES PATENTS 2,264,415 Taylor Dec. 2, 1941 FOREIGN PATENTS 388,520 Great Britain Mar. 2, 1933 394,333 Great Britain June 21, 1938
Claims (1)
1. IN A PROCESS WHEREIN TEXTILE MATERIAL OF ACETONESOLUBLE CELLULOSE ACETATE IS DELUSTRED BY THE ACTION OF A HOT AQUEOUS SOLUTION OF SOAP THE SOLUTION HAVING A PH VALUE OF 7 TO 9.5, INCREASING THE DELUSTRING ACTION OF THE SOLUTION BY INCLUDING HYDROGEN PEROXIDE THEREIN IN AN AMOUNT PER LITRE EQUIVALENT TO FROM 1 TO 5 CCS. OF HYDROGEN PEROXIDE OF 130 VOLUME STRENGTH.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3031254X | 1954-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3031254A true US3031254A (en) | 1962-04-24 |
Family
ID=10920111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US533506A Expired - Lifetime US3031254A (en) | 1954-10-01 | 1955-09-09 | Process of delustering acetone-soluble cellulose acetate textile with a hot soap solution containing hydrogen peroxide |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3031254A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB388520A (en) * | 1931-12-19 | 1933-03-02 | Courtaulds Ltd | Improvement in the treatment of threads, filaments and the like of cellulose esters |
| GB394333A (en) * | 1931-12-21 | 1933-06-21 | Bleachers Ass Ltd | Improvements in and relating to the delustering of fibres or fabrics consisting of or containing cellulose acetate |
| US2264415A (en) * | 1937-03-19 | 1941-12-02 | Celanese Corp | Manufacture of artificial filaments, yarns, and similar materials |
-
1955
- 1955-09-09 US US533506A patent/US3031254A/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB388520A (en) * | 1931-12-19 | 1933-03-02 | Courtaulds Ltd | Improvement in the treatment of threads, filaments and the like of cellulose esters |
| GB394333A (en) * | 1931-12-21 | 1933-06-21 | Bleachers Ass Ltd | Improvements in and relating to the delustering of fibres or fabrics consisting of or containing cellulose acetate |
| US2264415A (en) * | 1937-03-19 | 1941-12-02 | Celanese Corp | Manufacture of artificial filaments, yarns, and similar materials |
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