GB573812A - Improvements in or relating to process of making cellulosic products, process of sizing paper, and process of producing a precipitable paper sizing material, and the improved sizing material resulting therefrom - Google Patents
Improvements in or relating to process of making cellulosic products, process of sizing paper, and process of producing a precipitable paper sizing material, and the improved sizing material resulting therefromInfo
- Publication number
- GB573812A GB573812A GB17597/42A GB1759742A GB573812A GB 573812 A GB573812 A GB 573812A GB 17597/42 A GB17597/42 A GB 17597/42A GB 1759742 A GB1759742 A GB 1759742A GB 573812 A GB573812 A GB 573812A
- Authority
- GB
- United Kingdom
- Prior art keywords
- paper
- starch
- water
- size
- pulp
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/62—Rosin; Derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/47—Condensation polymers of aldehydes or ketones
- D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
- D21H17/50—Acyclic compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Abstract
Paper pulp for the productions of paper, paper board, &c. is sized by adding to an acid furnish, starch, rosin, or rosin-size a water-soluble or water-dispersible urea-formaldehyde condensation product, and an alkali metal metasilicate or sesquisilicate, and precipitating as with aluminium or iron sulphate or chloride. The starch may be added as wheat, corn, rice, or potato fluor. The pH value of the pulp may be between 4.2 and 5.8 during beating, and the size may be added as an aqueous dispersion of gel globules. The constituents of the size dispersion may be mixed in various orders, in water, or dry. An example specifies Kraft pulp coloured with carbon black made into boards on a cylinder machine and dried under pressure at 195-200 DEG F. for 8 to 12 hours, the slow drying insolubilizing the resin to form a tough, rubbery condensation product. A dry mixture of, e.g. 57 parts of urea-formaldehyde, 65 of starch, 32 of resin, and 52 of sodium metasilicate pentahydrate may be prepared as a precipitable sizing composition. Specification 568,352, [Group VIII], is referred to.ALSO:Paper pulp for the production of paper, paper board, &c., is sized by adding to an acid furnish, starch, rosin or rosin size, a water-soluble or water-dispersible urea-formaldehyde condensation product, and an alkali metal metasilicate or sesquisilicate, and precipitating as with aluminium or iron sulphate or chloride. The starch may be added as wheat, corn, rice or potato flour. The pH value of the pulp may be between 4.2 and 5.8 during beating, and the size may be added as an aqueous dispersion of gel globules. The constituents of the size dispersion may be mixed in various orders, in water, or dry. An example specifies Kraft pulp coloured with carbon black made into boards on a cylinder machine and dried under pressure at 195-200 DEG F. for 8 to 12 hours, the slow drying insolubilizing the resin to form a tough, rubbery condensation product. A dry mixture of e.g. 57 parts of urea-formaldehyde, 65 of starch, 32 of resin, and 52 of sodium metasilicate pentahydrate may be prepared as a precipitable sizing composition. Specification 568,352 is referred to.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US250384XA | 1942-06-11 | 1942-06-11 | |
| US140842XA | 1942-08-14 | 1942-08-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB573812A true GB573812A (en) | 1945-12-07 |
Family
ID=26685636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17597/42A Expired GB573812A (en) | 1942-06-11 | 1942-12-10 | Improvements in or relating to process of making cellulosic products, process of sizing paper, and process of producing a precipitable paper sizing material, and the improved sizing material resulting therefrom |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH250384A (en) |
| GB (1) | GB573812A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957739A (en) * | 2021-10-28 | 2022-01-21 | 山东天和纸业有限公司 | Method and equipment for improving lead retention rate of sketch paper |
-
1942
- 1942-12-10 GB GB17597/42A patent/GB573812A/en not_active Expired
-
1944
- 1944-05-06 CH CH250384D patent/CH250384A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957739A (en) * | 2021-10-28 | 2022-01-21 | 山东天和纸业有限公司 | Method and equipment for improving lead retention rate of sketch paper |
| CN113957739B (en) * | 2021-10-28 | 2024-04-26 | 山东天和纸业有限公司 | Method and equipment for improving lead retention rate of sketch paper |
Also Published As
| Publication number | Publication date |
|---|---|
| CH250384A (en) | 1947-08-31 |
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