GB876830A - Improvements in the impregnation of hardboard - Google Patents
Improvements in the impregnation of hardboardInfo
- Publication number
- GB876830A GB876830A GB39038/59A GB3903859A GB876830A GB 876830 A GB876830 A GB 876830A GB 39038/59 A GB39038/59 A GB 39038/59A GB 3903859 A GB3903859 A GB 3903859A GB 876830 A GB876830 A GB 876830A
- Authority
- GB
- United Kingdom
- Prior art keywords
- board
- chamber
- water
- hardboard
- solution
- 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
- 238000005470 impregnation Methods 0.000 title abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 3
- 239000007788 liquid Substances 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 2
- 239000004202 carbamide Substances 0.000 abstract 2
- 239000000243 solution Substances 0.000 abstract 2
- 239000002904 solvent Substances 0.000 abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- 241000238631 Hexapoda Species 0.000 abstract 1
- 241000256602 Isoptera Species 0.000 abstract 1
- 229910019142 PO4 Inorganic materials 0.000 abstract 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 239000005011 phenolic resin Substances 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 1
- 239000010452 phosphate Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- HCJLVWUMMKIQIM-UHFFFAOYSA-N sodium;2,3,4,5,6-pentachlorophenol Chemical compound [Na+].OC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl HCJLVWUMMKIQIM-UHFFFAOYSA-N 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J1/00—Fibreboard
- D21J1/08—Impregnated or coated fibreboard
Landscapes
- Building Environments (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
876,830. Proofing hardboard. STATENS SKOGSINDUSTRIER A.B. Nov. 18, 1959 [Nov. 20, 1958], No. 39038/59. Class 140. Hardboard is proofed against water, fire, mildew or insects by maintaining a pressure difference on opposite sides of the board, by subjecting the impregnating solution to a pressure of at least 1 kg./cm.<SP>2</SP>, whereby the impregnating liquid is forced through the board, the solvent being subsequently evaporated. As shown, the board 6 is supported on a sealing ring 4 in a chamber 1 which has a clamped-on cover 7 and is enclosed in an outer chamber 2. A pump 9 pumps impregnating liquid from a well 3 in chamber 2 and forces it, at pressures between 1 and 20 kilograms per sq. cm. regulated by a valve 12, into the chamber 1 beneath the board. Liquid emerging from the board escapes via wire mesh 6. The Specification describes the proofing of board (1) against termites with an aqueous solution of sodium pentachlorphenate, and (2) against fire with an aqueous solution of urea and phosphoric acid or a phosphate, preferably in molecular ratio 3 : 1 to 10 : 1, or such a solution in which the ingredients have been reacted with one another, in high concentration, e.g. 40-55% of solids. Treatment with aqueous solutions of urea or phenol resins is also mentioned. The board is subsequently heated to drive off the water, any reaction, e.g. the hardening or resins, being completed simultaneously. Alcohol or other solvent may be used instead of water. The board treated may be prehardened, or may be hardened after or simultaneously with the impregnation treatment.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE876830X | 1958-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB876830A true GB876830A (en) | 1961-09-06 |
Family
ID=20370909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB39038/59A Expired GB876830A (en) | 1958-11-20 | 1959-11-18 | Improvements in the impregnation of hardboard |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB876830A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3493417A (en) * | 1965-06-08 | 1970-02-03 | Stockholms Superfosfat Fab Ab | Composition for treatment of wood products comprising a polyol compound,a polymerizable amine formaldehyde resin and a curing catalyst |
-
1959
- 1959-11-18 GB GB39038/59A patent/GB876830A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3493417A (en) * | 1965-06-08 | 1970-02-03 | Stockholms Superfosfat Fab Ab | Composition for treatment of wood products comprising a polyol compound,a polymerizable amine formaldehyde resin and a curing catalyst |
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