US52250A - Improved process for bleaching fibrous substances - Google Patents
Improved process for bleaching fibrous substances Download PDFInfo
- Publication number
- US52250A US52250A US52250DA US52250A US 52250 A US52250 A US 52250A US 52250D A US52250D A US 52250DA US 52250 A US52250 A US 52250A
- Authority
- US
- United States
- Prior art keywords
- fibrous substances
- improved process
- bleaching
- liquid
- bleaching fibrous
- 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
Links
- 238000004061 bleaching Methods 0.000 title description 10
- 239000000126 substance Substances 0.000 title description 10
- 238000000034 method Methods 0.000 title description 6
- 239000007788 liquid Substances 0.000 description 16
- 239000000835 fiber Substances 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 6
- 235000015096 spirit Nutrition 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 235000011121 sodium hydroxide Nutrition 0.000 description 4
- 239000001117 sulphuric acid Substances 0.000 description 4
- 235000011149 sulphuric acid Nutrition 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 description 2
- 240000000218 Cannabis sativa Species 0.000 description 2
- 241000208202 Linaceae Species 0.000 description 2
- 235000004431 Linum usitatissimum Nutrition 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 235000009120 camo Nutrition 0.000 description 2
- 235000005607 chanvre indien Nutrition 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000011487 hemp Substances 0.000 description 2
- 235000012765 hemp Nutrition 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 235000012766 marijuana Nutrition 0.000 description 2
- 229940072033 potash Drugs 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 235000015320 potassium carbonate Nutrition 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1026—Other features in bleaching processes
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
Definitions
- This invention relates to a newandimproved process for bleaching fibrous substances, and is more especially designed for bleachingstraw and flax and hemp fiber for paper-stock.
- the fiber is first subjected to a washing to deprive it of all dirt, grease, 850., as follows: To one barrel of waterabout thirty six (36) gall0nsthere are added potash or caustic soda, onepound; chloride ofsodium, (salt,) one pound, oran equivalent amount of oX-gall; spirits of wine, two to three ounces. The stock or fiber is then put in the liquid and boiled steadily about thirty (30) minutes. The stock or fiber is then taken out and the liquid expressed from it by rollers or other suitable means, the liquid being saved, as it may be repeatedly used. The stock or fiber is then washed in clean or pure water.
- the bleachingis efl'ected as follows: To one barrel of water-thirty-six (36) gallons-add chloride of lime, one and a half pound; sulphuric acid, eight ounces. The acid is to be added gradually, four ounces at first, and the remainder afterward. This bleaching-liquid is to be well stirred, and the cleansed stock or fiber is placed into it in small quantities at a time, say, twenty (20) pounds, and keep the same submerged.
- m uriatic acid may be used, but the latter I consider inferior; and for the alkali wash liquid potassa may be used instead of the caustic soda, and spirits of ammonia instead of the spirits of wine, these substitutes being used about in the same proportion as the substances first named.
- the liquidpotassa enables the solution to be used coldthat is to say, no boiling will be required-and that in many cases is a great advantage, economizing in time and avoiding the expense of furnaces, boilers, 850.
- the cold solution maybe composedot' Water, one gallon; liquid potassa, three ounces spirits of ammonia, two ounces, or an equivalent amount of the chloride of sodium.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Description
UNrrn STATES Arena JOSEPH SHORT, OF NEWV YORK, N. Y., ASSIGNOR TO HIMSELF, JOHN J. EOKEL, AND ISAAC S. SOHUYLER, OF THE SAME PLAOE.
IMPROVED PROCESS FOR BLEACHING FIBROUS SUBSTANCES.
Specification forming part of Letters Patent No. 52,250, dated January '23, 1866.
' same.
This invention relates to a newandimproved process for bleaching fibrous substances, and is more especially designed for bleachingstraw and flax and hemp fiber for paper-stock.
The fiber is first subjected to a washing to deprive it of all dirt, grease, 850., as follows: To one barrel of waterabout thirty six (36) gall0nsthere are added potash or caustic soda, onepound; chloride ofsodium, (salt,) one pound, oran equivalent amount of oX-gall; spirits of wine, two to three ounces. The stock or fiber is then put in the liquid and boiled steadily about thirty (30) minutes. The stock or fiber is then taken out and the liquid expressed from it by rollers or other suitable means, the liquid being saved, as it may be repeatedly used. The stock or fiber is then washed in clean or pure water.
The bleachingis efl'ected as follows: To one barrel of water-thirty-six (36) gallons-add chloride of lime, one and a half pound; sulphuric acid, eight ounces. The acid is to be added gradually, four ounces at first, and the remainder afterward. This bleaching-liquid is to be well stirred, and the cleansed stock or fiber is placed into it in small quantities at a time, say, twenty (20) pounds, and keep the same submerged.
nstead of sulphuric acid, m uriatic acid may be used, but the latter I consider inferior; and for the alkali wash liquid potassa may be used instead of the caustic soda, and spirits of ammonia instead of the spirits of wine, these substitutes being used about in the same proportion as the substances first named.
The liquidpotassa enables the solution to be used coldthat is to say, no boiling will be required-and that in many cases is a great advantage, economizing in time and avoiding the expense of furnaces, boilers, 850.
The cold solution maybe composedot' Water, one gallon; liquid potassa, three ounces spirits of ammonia, two ounces, or an equivalent amount of the chloride of sodium.
Having thus described myinventioml claim as new and desire to secure by Letters Patent- 1. The cold alkaline solution composed of the liquid potassa, spirits of ammonia, or chloride of sodium, about in the proportion specified.
2. The bleaching of fibrous substances by first washing them in the alkaline solution and then submerging them in the bleaching liquid composed of the ingredients herein named and about in the proportion as specified.
The above specification of my invention signed by me this 31st day of October, 1865.
JOSEPH SHORT.
Witnesses:
M. M. LIVINGSTON, G. L. TOPLIFF.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US52250A true US52250A (en) | 1866-01-23 |
Family
ID=2121796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US52250D Expired - Lifetime US52250A (en) | Improved process for bleaching fibrous substances |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US52250A (en) |
-
0
- US US52250D patent/US52250A/en not_active Expired - Lifetime
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