GB407161A - Improvements in or relating to boards for building and fitting purposes and method of making same - Google Patents
Improvements in or relating to boards for building and fitting purposes and method of making sameInfo
- Publication number
- GB407161A GB407161A GB36667/32A GB3666732A GB407161A GB 407161 A GB407161 A GB 407161A GB 36667/32 A GB36667/32 A GB 36667/32A GB 3666732 A GB3666732 A GB 3666732A GB 407161 A GB407161 A GB 407161A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose
- aldehyde
- phenol
- boards
- building
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
Boards for building and fitting purposes are formed from material made by treating cellulose or cellulose-containing material, which may contain lignin or not, with less than its weight of a substance capable of reacting with an aldehyde or a phenol to form a condensation product, under such conditions that a hard product is formed by condensation between the added substance and the cellulose or cellulose-containing material. The treatment may be carried out while applying heat or pressure, or both. Examples of added substances are a phenol, an aldehyde, urea, thiourea or a compound which produces one or other of these compounds under the operating conditions, e.g. ammonium carbamate. In an example sheets are formed from an aqueous suspension of wood fibres, the suspension containing in solution urea, thiourea, a phenol, or an aldehyde in amount from 0.1 to 10 per cent, preferably 5 per cent, by weight of the dry fibre. The sheets are dried under heat and pressure, or may be partially or completely dried and then pressed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE407161X | 1932-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB407161A true GB407161A (en) | 1934-03-15 |
Family
ID=20309503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB36667/32A Expired GB407161A (en) | 1932-10-05 | 1932-12-28 | Improvements in or relating to boards for building and fitting purposes and method of making same |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB407161A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0001237A1 (en) * | 1977-09-07 | 1979-04-04 | BASF Aktiengesellschaft | Process for manufacturing comminuted wood products using formaldehyde binding agents |
-
1932
- 1932-12-28 GB GB36667/32A patent/GB407161A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0001237A1 (en) * | 1977-09-07 | 1979-04-04 | BASF Aktiengesellschaft | Process for manufacturing comminuted wood products using formaldehyde binding agents |
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