US100523A - John w - Google Patents
John w Download PDFInfo
- Publication number
- US100523A US100523A US100523DA US100523A US 100523 A US100523 A US 100523A US 100523D A US100523D A US 100523DA US 100523 A US100523 A US 100523A
- Authority
- US
- United States
- Prior art keywords
- bleaching
- john
- pulping
- improved process
- submitting
- 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 description 10
- 238000000034 method Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 238000009835 boiling Methods 0.000 description 6
- 238000004537 pulping Methods 0.000 description 6
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 235000011149 sulphuric acid Nutrition 0.000 description 4
- 239000001117 sulphuric acid Substances 0.000 description 4
- 208000003251 Pruritus Diseases 0.000 description 2
- 240000003670 Sesamum indicum Species 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
- D21C3/16—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides nitrogen oxides; nitric acid nitrates, nitrites
Definitions
- the nature 'of my invention relates to improvements in pulping and bleaching paper stock, the object of which is to provide a means for accomplishing the same. more quickly, in a better nnumer, and it a less expense than can be done by the means atpresent in use,
- My improved process may also be applied to pulping and bleaching other substances with improved resuits.
Landscapes
- Paper (AREA)
Description
diniwl finders flaunt (Milne.
JOHN W. GOODWYN, OF PETERSBURG, VIRGINIA.
Letters Patent No. 100,523, dated March 8, 1870; antedated February 26, 1870.
IMPROVED PROCESS OI PULPING- AND BLEACHING PAPER STOCK The Schedule referred to in these Letters Patent and making part of the same.
To (til whom 'it may concern I Be it known that I, J onx \V. Goomvvx, ot'letsrsburg, in the county of Dinwiddie, and State of Virginia, have invented a new and improved Process for Pnlping and Bleaching Paper Stock and other similar Substances; and 1 do hereby declare that the following is a. full, clear, and exact description thencqf, which will enable others skilled in the art; to understand the same.
The nature 'of my invention relates to improvements in pulping and bleaching paper stock, the object of which is to provide a means for accomplishing the same. more quickly, in a better nnumer, and it a less expense than can be done by the means atpresent in use,
It consists in first submitting the substance to be pulped and bleached to the action of dilute nitric acid, well heated; second, boiling it in alkali, in an open vessel, and fiuziily,'to a.- bath of chloride of lime and sulphuric acid.
, I find that by the application of heat to the nitric ucid very much time is saved over the common process of pulping and bleaching; that very dilute acid In ill produce the desired efi'efitjn very muclrless time than can be done without hezft with the itch very much stronger also, that the time required for boiling in the zilknli is greatly reduced.
My improved process may also be applied to pulping and bleaching other substances with improved resuits.
Having thus described my invention,
\Vlnn; 1 claim as new, and desire to secureby Letters Patent, is- 7 An improved process for puipingnnd bleaching pnper stock, which consists in first submitting the substance to the notion of hot dilute nitriczu-id; second, boiling itin aunlkali in on open vessel, and third, submitting it, to n bath of chloride of lime and sulphuric acid.
JOHN \V. GOODWYJ.
' Witnesses:
Jxo. M. PLEASANTS, J mm S. \VEEKS.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US100523A true US100523A (en) | 1870-03-08 |
Family
ID=2169985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US100523D Expired - Lifetime US100523A (en) | John w |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US100523A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1985001233A1 (en) * | 1983-09-13 | 1985-03-28 | Data Card Corporation | Laser machining system |
-
0
- US US100523D patent/US100523A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1985001233A1 (en) * | 1983-09-13 | 1985-03-28 | Data Card Corporation | Laser machining system |
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