US3081265A - Washing cotton fabrics - Google Patents
Washing cotton fabrics Download PDFInfo
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- US3081265A US3081265A US827142A US82714259A US3081265A US 3081265 A US3081265 A US 3081265A US 827142 A US827142 A US 827142A US 82714259 A US82714259 A US 82714259A US 3081265 A US3081265 A US 3081265A
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- United States
- Prior art keywords
- sodium
- parts
- borohydride
- bath
- washing
- 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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- 239000004744 fabric Substances 0.000 title claims description 17
- 238000005406 washing Methods 0.000 title description 21
- 229920000742 Cotton Polymers 0.000 title description 11
- 239000003599 detergent Substances 0.000 claims description 5
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 5
- 239000012279 sodium borohydride Substances 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 239000011591 potassium Substances 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 229910052783 alkali metal Inorganic materials 0.000 description 8
- 150000001340 alkali metals Chemical class 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000000344 soap Substances 0.000 description 6
- 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 5
- 239000000203 mixture Substances 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 description 3
- 239000007844 bleaching agent Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 3
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 3
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 2
- 238000004900 laundering Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000002964 rayon Substances 0.000 description 2
- 239000003352 sequestering agent Substances 0.000 description 2
- 239000000271 synthetic detergent Substances 0.000 description 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 2
- SOBHUZYZLFQYFK-UHFFFAOYSA-K trisodium;hydroxy-[[phosphonatomethyl(phosphonomethyl)amino]methyl]phosphinate Chemical compound [Na+].[Na+].[Na+].OP(O)(=O)CN(CP(O)([O-])=O)CP([O-])([O-])=O SOBHUZYZLFQYFK-UHFFFAOYSA-K 0.000 description 2
- ICLYJLBTOGPLMC-KVVVOXFISA-N (z)-octadec-9-enoate;tris(2-hydroxyethyl)azanium Chemical compound OCCN(CCO)CCO.CCCCCCCC\C=C/CCCCCCCC(O)=O ICLYJLBTOGPLMC-KVVVOXFISA-N 0.000 description 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 235000019329 dioctyl sodium sulphosuccinate Nutrition 0.000 description 1
- YHAIUSTWZPMYGG-UHFFFAOYSA-L disodium;2,2-dioctyl-3-sulfobutanedioate Chemical compound [Na+].[Na+].CCCCCCCCC(C([O-])=O)(C(C([O-])=O)S(O)(=O)=O)CCCCCCCC YHAIUSTWZPMYGG-UHFFFAOYSA-L 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229960001484 edetic acid Drugs 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- WYVGZXIHGGQSQN-UHFFFAOYSA-N hexadecanoate;tris(2-hydroxyethyl)azanium Chemical compound OCCN(CCO)CCO.CCCCCCCCCCCCCCCC(O)=O WYVGZXIHGGQSQN-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 150000004681 metal hydrides Chemical class 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-M naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-M 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- 229940045870 sodium palmitate Drugs 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229940080350 sodium stearate Drugs 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- PWWJJDVDTKXWOF-UHFFFAOYSA-M sodium;2-[hexadecanoyl(methyl)amino]ethanesulfonate Chemical compound [Na+].CCCCCCCCCCCCCCCC(=O)N(C)CCS([O-])(=O)=O PWWJJDVDTKXWOF-UHFFFAOYSA-M 0.000 description 1
- MWZFQMUXPSUDJQ-KVVVOXFISA-M sodium;[(z)-octadec-9-enyl] sulfate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCCOS([O-])(=O)=O MWZFQMUXPSUDJQ-KVVVOXFISA-M 0.000 description 1
- GGXKEBACDBNFAF-UHFFFAOYSA-M sodium;hexadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCC([O-])=O GGXKEBACDBNFAF-UHFFFAOYSA-M 0.000 description 1
- NWZBFJYXRGSRGD-UHFFFAOYSA-M sodium;octadecyl sulfate Chemical compound [Na+].CCCCCCCCCCCCCCCCCCOS([O-])(=O)=O NWZBFJYXRGSRGD-UHFFFAOYSA-M 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 235000019818 tetrasodium diphosphate Nutrition 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 229940117013 triethanolamine oleate Drugs 0.000 description 1
- 229910000404 tripotassium phosphate Inorganic materials 0.000 description 1
- 235000019798 tripotassium phosphate Nutrition 0.000 description 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 1
- 235000019801 trisodium phosphate Nutrition 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
Definitions
- the present invention relates to washing cotton fabrics and more particularly to an improvement in washing cotton fabrics whereby the useful life of the fabric is increased by decreasing the loss in strength of the fabric after repeated washings.
- the present invention is based upon the postulation that the loss of strength in cotton fabric resulting from repeated washings may be due to a change in the structure of the cellulose molecule and that the presence of iron deposits may accentuate this change by catalytic degradation.
- the invention is based further upon the conceptions that since the alkali metal borohydrides are powerful reducing and hydrogenating agents, the presence of a small amount of an alkali metal borohydride in the wash bath might tend to prevent degradation of the cellulose molecule and tend to maintain the iron present in a wash bath in its reduced and soluble form.
- the present invention provides a novel aqueous bath which may be used advantageously in washing cotton fabrics.
- the bath of the invention may be of any conventional composition except that it also contains as an essential ingredient a small amount of an alkali metal borohydride, such as sodium borohydride or potassium borohydride. Since these alkali metal borohydrides tesd to decompose gradually in aqueous solution, a small amount of an alkaline material, such as sodium hydroxide, potassium hydroxide, ammonium hydroxide, sodium or potassium carbonate, trisodium or tripotassium phosphate, etc., is dissolved in the bath to act as a stabilizing agent for the borohydride.
- the bath is equally useful for preventing deterioration of rayon fabrics when subjected to repeated washings.
- a typical conventional aqueous washing bath comprises water containing soap or synthetic detergent in an amount of about 700 parts by weight per million parts of the bath. it often contains a Water softener or sequestering agent in an amount up to about 350 parts by weight per million parts of the bath. It also sometimes contains a bleaching agent, such as sodium hypochlorite.
- the aqueous bath of the invention consists essentially of water having dissolved therein a conventional detergent in conventional amount with or without a conventional amount of a water softener together with from about 3.5 to 17.5 parts by weight of an alkali metal borohydride and from about 7 to 35 parts by weight of an alkali metal hydroxide per million parts by weight of the bath.
- the bath of the invention contains about 9 parts by weight of alkali metal borohydride'and about 18 parts by weight of an alkali metal hydroxide per million parts of the bath.
- sodium oleate, sodium palmitate and sodium stearate soaps as well as mixtures thereof and special soaps such as olive oil soaps, cocoanut soaps, rosin fatty acid soaps, etc.
- sodium dodecyl benzene sulfonate sodium lauryl sulfate, sodium oleyl sulfate, sodium stearyl sulfate, sodium dioctyl sulfosuccinate, sodium N-methyl-N- palmitoyl taurate, sodium alkyl naphthalene sulfonate, polyethylene glycol-tert-dodecyl thioether, polyoxyethylene ab-ietic ether, triethanolamine palmitate, triethanolamine oleate and polyethylene ethers of lauryl, stearyl and oleyl alcohols.
- sodium hexametaphosphate sodium tripolyphosphate, tetrasodium pyrophosphate, ethylene diamine tetraacetic acid and its mono, di and tri-sodium salts.
- test pieces were removed from.
- the main sam- Instron strip tensile tests were run in the warp direction as a measure of strength change,-the results being shown in the following table.
- alkaline material is sodium hydroxide in an amount of about 17.5 parts.
Description
$381,265 Patented Mar. 12, 1953 3,081,265 WASHING COTTON FABRICS Francis K. Burr, Danvers, Mass, assignor to Metal Hydrides Incorporated, Beverly, Mass, a corporation of Massachusetts No Drawing. Filed July 15, 1959, Ser. No. 827,142 4 Claims. ((11. 252-105) The present invention relates to washing cotton fabrics and more particularly to an improvement in washing cotton fabrics whereby the useful life of the fabric is increased by decreasing the loss in strength of the fabric after repeated washings.
It has been known that repeated washing of cotton garments results in a gradual decrease in the strength of the cotton fabric. It also has been known that repeated washings in water containing iron results in iron deposits on the fabrics which discolor the fabric and contribute to lower strength. g
The present invention is based upon the postulation that the loss of strength in cotton fabric resulting from repeated washings may be due to a change in the structure of the cellulose molecule and that the presence of iron deposits may accentuate this change by catalytic degradation. The invention is based further upon the conceptions that since the alkali metal borohydrides are powerful reducing and hydrogenating agents, the presence of a small amount of an alkali metal borohydride in the wash bath might tend to prevent degradation of the cellulose molecule and tend to maintain the iron present in a wash bath in its reduced and soluble form.
Subsequent investigations have proved that after a cotton fabric has been subjected to repeated washings in a wash bath containing conventional detergents together with a small amount of an alkali metal borohydride, the strength of the fabric is substantially greater than that of a cotton fabric which has been subjected to the same number of washings in a wash bath containing the same conventional detergents but no alkali metal borohydride.
Thus, the present invention provides a novel aqueous bath which may be used advantageously in washing cotton fabrics. The bath of the invention may be of any conventional composition except that it also contains as an essential ingredient a small amount of an alkali metal borohydride, such as sodium borohydride or potassium borohydride. Since these alkali metal borohydrides tesd to decompose gradually in aqueous solution, a small amount of an alkaline material, such as sodium hydroxide, potassium hydroxide, ammonium hydroxide, sodium or potassium carbonate, trisodium or tripotassium phosphate, etc., is dissolved in the bath to act as a stabilizing agent for the borohydride. The bath is equally useful for preventing deterioration of rayon fabrics when subjected to repeated washings.
A typical conventional aqueous washing bath comprises water containing soap or synthetic detergent in an amount of about 700 parts by weight per million parts of the bath. it often contains a Water softener or sequestering agent in an amount up to about 350 parts by weight per million parts of the bath. It also sometimes contains a bleaching agent, such as sodium hypochlorite.
The aqueous bath of the invention consists essentially of water having dissolved therein a conventional detergent in conventional amount with or without a conventional amount of a water softener together with from about 3.5 to 17.5 parts by weight of an alkali metal borohydride and from about 7 to 35 parts by weight of an alkali metal hydroxide per million parts by weight of the bath. Preferably, the bath of the invention contains about 9 parts by weight of alkali metal borohydride'and about 18 parts by weight of an alkali metal hydroxide per million parts of the bath.
As typical of conventional detergents I may mention sodium oleate, sodium palmitate and sodium stearate soaps as well as mixtures thereof and special soaps such as olive oil soaps, cocoanut soaps, rosin fatty acid soaps, etc. As typical .of conventional synthetic detergents I may mention sodium dodecyl benzene sulfonate, sodium lauryl sulfate, sodium oleyl sulfate, sodium stearyl sulfate, sodium dioctyl sulfosuccinate, sodium N-methyl-N- palmitoyl taurate, sodium alkyl naphthalene sulfonate, polyethylene glycol-tert-dodecyl thioether, polyoxyethylene ab-ietic ether, triethanolamine palmitate, triethanolamine oleate and polyethylene ethers of lauryl, stearyl and oleyl alcohols. As typical of conventional water softeners or sequestering agents I may mention sodium hexametaphosphate, sodium tripolyphosphate, tetrasodium pyrophosphate, ethylene diamine tetraacetic acid and its mono, di and tri-sodium salts.
In order to illustrate the invention further and compare theresults obtained with the bath of the invention with the results obtained with typical previously used baths, the following tests are given. In these tests the following wash formulations were used.
Regular Wash.
Parts by Weight Component Amount per Million Parts by weight of bath Sodium oleate 20 grams 705 10 grams 352. 5
am .35 7 5 gallons-.-
Bleach Wash Parts by Weight Component Amount per Million Parts by weight of bath Sodium oleate 20 grams 705 Sodium hexametaphosphate 10 grams. .r.. 352. 5 Sodium hypoehlorite 4 ounces 3908. 65 Water 7.5 callous pH of bath 9 (l Borohya'ride Wash Parts by Weight Component Amount per Million Parts by weight of bath Sodium olcate 20 grams 705 Sodium hexametaphosphate 10 grams 352. 5 Sodium borohydride 0 25 grams 8. Sodium hydroxide 0.50 grams 17. 5 Water. 7,5 oollonq pH of bath 4 A separate sample of standard white broadcloth measuring 1 yard by 1 /2 yards was subjected to 70 complete washing cycles in the above in a bath of each of the above compositions. All washings were conducted in a standard Laundromat using the full washing cycle on the hot setting, namely, the washing cycle was 20 minutes at approximately F., followed by three rinses and a final spin-drying cycle. Each sample was laundered once each day and allowed .to remain dry overnight until the resumption of the next laundering cycle. Each sample was dried in a standard electrically heated tumble drier using the medium setting.
The samples of broadcloth used were insufficient to yield an adequate load for the washing machine and, therefore, approximately 7 pounds of additional ballast was added to the washer so that the washing cycle would be reasonably typical of a family wash.
As the washing cycles progressed, it was noted that the .ples for analysis.
samples in the regular wash and in the bleach wash gradually became yellower whereas no appreciable yellowing of the borohydride wash sample occurred. This is attributed to the fact that the borohydride keeps any iron present in its soluble form so that little or no iron deposition occurs to accentuate degradation of the cellulose molecule.
At the end of the 40th, 50th, 60th and 70th cycles of laundering, test pieces were removed from. the main sam- Instron strip tensile tests were run in the warp direction as a measure of strength change,-the results being shown in the following table.
Instron Tensile in Lbs/In.
I claim:
1. In the washing of cotton and rayon fabrics wherein I whereby said loss of strength is decreased by dissolving in said aqueous solution in parts by weight per million parts by Weight of said solution about 3.5 to 17.5 parts of a borohydride selected from the group consisting of sodium borohydride and potassium borohydride and from about 7 to parts of an alkaline material for stabilizing the borohydride.
Y .2. The 'method as defined in claim 1 wherein said borohydride is sodium borohydride.
3. The method as defined in claim 2 wherein the amount of sodium 'borohydride is about 8.75 parts.
4. The method as defined in claim 3 wherein the alkaline material is sodium hydroxide in an amount of about 17.5 parts.
References Cited in the file of this patent UNITED STATES PATENTS 2,257,186 Orthne'r et a1. Sept. 30, 1941 2,802,788 Flaxman Aug. 13, 1957 2,856,428 Brown Oct. 14, 1958 2,914,374 Harris et al Nov. 24, 1959 2,963,405 Seemuller Dec. 6,1960
OTHER REFERENCES Gibb: Journal of Chemical Education, October 1948; pp. 577-582.
Claims (1)
1. IN THE WASHING OF COTTON AND RAYON FABRICS WHEREIN THE FABRIC IS SUBJECTED TO A WASHING OPERATION IN AN AQUEOUS SOLUTION OF A DETERGENT WHEREBY REPEATED WASHINGS RESULT IN LOSS OF STRENGTH OF SAID FABRIC, THE IMPROVEMENT WHEREBY SAID LOSS OF STRENGTH IS DECREASED BY DISSOLVING IN SAID AQUEOUS SOLUTION IN PARTS BY WEIGHT PER MILLION PARTS BY WEIGHT OF SAID SOLUTION ABOUT 3.5 TO 17.5 PARTS OF A BOROHYDRIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM BOROHYDRIDE AND POTASSIUM BOROHYDRIDE AND FROM ABOUT 7 TO 35 PARTS OF AN ALKALINE MATERIAL FOR STABILIZING THE BOROHYDRIDE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US827142A US3081265A (en) | 1959-07-15 | 1959-07-15 | Washing cotton fabrics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US827142A US3081265A (en) | 1959-07-15 | 1959-07-15 | Washing cotton fabrics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3081265A true US3081265A (en) | 1963-03-12 |
Family
ID=25248417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US827142A Expired - Lifetime US3081265A (en) | 1959-07-15 | 1959-07-15 | Washing cotton fabrics |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3081265A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3299808A (en) * | 1965-08-12 | 1967-01-24 | Zitt Arthur | Correction fluid |
| US3318657A (en) * | 1963-09-23 | 1967-05-09 | Metal Hydrides Inc | Method of bleaching cellulose fibres |
| US3328308A (en) * | 1965-09-03 | 1967-06-27 | Ael Products Inc | Laundering process and composition |
| US3620807A (en) * | 1967-11-29 | 1971-11-16 | Colgate Palmolive Co | Textile softener composition |
| US4401810A (en) * | 1981-09-08 | 1983-08-30 | United States Of America As Represented By The Librarian Of Congress | Method of stabilizing felted cellulosic sheet material with an alkali metal borohydride |
| US4610728A (en) * | 1982-10-19 | 1986-09-09 | Ram Natesh | Method and composition for dissolving deposits of magnetite |
| WO2000067606A1 (en) * | 1999-05-12 | 2000-11-16 | James Grant Caradine | Bag clamp |
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|---|---|---|---|---|
| US2257186A (en) * | 1937-02-13 | 1941-09-30 | Gen Aniline & Film Corp | Process of removing metal oxides and preparations suitable in this process |
| US2802788A (en) * | 1957-08-13 | Cleaning composition for automotive | ||
| US2856428A (en) * | 1955-07-13 | 1958-10-14 | Herbert C Brown | Method for hydrogenating organic compounds by reacting with alkali metal borohydrides |
| US2914374A (en) * | 1954-03-24 | 1959-11-24 | Harris Res Lab Inc | Bleaching of keratinous fibrous material |
| US2963405A (en) * | 1955-03-31 | 1960-12-06 | Oreal | Coated borohydrides |
-
1959
- 1959-07-15 US US827142A patent/US3081265A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2802788A (en) * | 1957-08-13 | Cleaning composition for automotive | ||
| US2257186A (en) * | 1937-02-13 | 1941-09-30 | Gen Aniline & Film Corp | Process of removing metal oxides and preparations suitable in this process |
| US2914374A (en) * | 1954-03-24 | 1959-11-24 | Harris Res Lab Inc | Bleaching of keratinous fibrous material |
| US2963405A (en) * | 1955-03-31 | 1960-12-06 | Oreal | Coated borohydrides |
| US2856428A (en) * | 1955-07-13 | 1958-10-14 | Herbert C Brown | Method for hydrogenating organic compounds by reacting with alkali metal borohydrides |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3318657A (en) * | 1963-09-23 | 1967-05-09 | Metal Hydrides Inc | Method of bleaching cellulose fibres |
| US3299808A (en) * | 1965-08-12 | 1967-01-24 | Zitt Arthur | Correction fluid |
| US3328308A (en) * | 1965-09-03 | 1967-06-27 | Ael Products Inc | Laundering process and composition |
| US3620807A (en) * | 1967-11-29 | 1971-11-16 | Colgate Palmolive Co | Textile softener composition |
| US4401810A (en) * | 1981-09-08 | 1983-08-30 | United States Of America As Represented By The Librarian Of Congress | Method of stabilizing felted cellulosic sheet material with an alkali metal borohydride |
| US4610728A (en) * | 1982-10-19 | 1986-09-09 | Ram Natesh | Method and composition for dissolving deposits of magnetite |
| WO2000067606A1 (en) * | 1999-05-12 | 2000-11-16 | James Grant Caradine | Bag clamp |
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