GB1289465A - - Google Patents
Info
- Publication number
- GB1289465A GB1289465A GB1289465DA GB1289465A GB 1289465 A GB1289465 A GB 1289465A GB 1289465D A GB1289465D A GB 1289465DA GB 1289465 A GB1289465 A GB 1289465A
- Authority
- GB
- United Kingdom
- Prior art keywords
- weight
- surface layer
- fire
- asbestos
- proofing agent
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08L61/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08L61/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
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)
- Architecture (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Physics & Mathematics (AREA)
- Laminated Bodies (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Forests & Forestry (AREA)
Abstract
1289465 Timber substitutes A MORALT 26 Jan 1970 [27 Jan 1969] 3655/70 Addition to 1235124 Heading C3N A moulded wooden body comprises a core and a surface layer, the surface layer comprising pulverulent wood material and asbestos as a first fire-proofing agent and which has impregnated therein a second fire-proofing agent other than asbestos. The second fire-proofing agent may be antimony trioxide, boric acid or boron oxide or a mixture of boric acid with antimony trioxide. The second fire-proofing agent is suitably present in an amount of at least 5% by weight, and preferably present in an amount of at least 10% by weight, based on the total dry weight of the surface layer. The second fireproofing agent may itself have fungicidal properties or the surface layer may include in addition to the first and second fire-proofing agents a fungicide and/or insecticide. The asbestos content is preferably within the range 40-60% by weight, but quantities as low as 8-12% by weight, based on the total dry weight of the surface layer, are also effective. The pulverulent wood material is preferably grinding dust resulting from grinding or sanding of chipboard of the kind having fire-resistant properties. In a preferred embodiment grinding dust resulting from the grinding of the boards according to the invention is raised for the surface layer. One such surface layer comprises a 60 : 40 weight ratio of (i) a material comprising 50% by weight wood chips, 50% by weight asbestos and additionally containing 15% of the second fire-proofing agent in the wood chips and (ii) refined material originating from a moulded body according to the invention. The glue for the pulverulent wood material is preferably urea-formaldehyde resin. The glue may be present in the surface layer in an amount up to 12% by weight and in the core material 10% by weight based on the total dry weight. The moulded bodies may contain asbestos and/or a second fire-proofing agent in the core material thereof and this core material may be the same as that used for the surface layer. The surface layers and core layer may be moulded into a three-layered chipboard and subsequently passed for example at 140‹ C. for 8 minutes to form a solid body.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691903936 DE1903936A1 (en) | 1969-01-27 | 1969-01-27 | Wood-based molded body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1289465A true GB1289465A (en) | 1972-09-20 |
Family
ID=5723479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1289465D Expired GB1289465A (en) | 1969-01-27 | 1970-01-26 |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE745006R (en) |
| DE (1) | DE1903936A1 (en) |
| FR (1) | FR2031236A6 (en) |
| GB (1) | GB1289465A (en) |
| NL (1) | NL7000775A (en) |
| SE (1) | SE365982B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2152063A (en) * | 1983-12-24 | 1985-07-31 | Kunnemeyer Hornitex | Method of manufacturing fireproofed chipboards and shaped-members |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3478208D1 (en) * | 1983-11-05 | 1989-06-22 | Hoechst Ag | Process for the manufacture of products made of wood particles |
| DE19625251C2 (en) * | 1996-06-15 | 2003-10-30 | Ihd Inst Fuer Holztechnologie | Material from residues and binders as well as process for its production |
-
1969
- 1969-01-27 DE DE19691903936 patent/DE1903936A1/en active Pending
-
1970
- 1970-01-20 SE SE00675/70A patent/SE365982B/xx unknown
- 1970-01-20 NL NL7000775A patent/NL7000775A/xx unknown
- 1970-01-26 GB GB1289465D patent/GB1289465A/en not_active Expired
- 1970-01-27 BE BE745006D patent/BE745006R/en active
- 1970-01-27 FR FR7002837A patent/FR2031236A6/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2152063A (en) * | 1983-12-24 | 1985-07-31 | Kunnemeyer Hornitex | Method of manufacturing fireproofed chipboards and shaped-members |
Also Published As
| Publication number | Publication date |
|---|---|
| SE365982B (en) | 1974-04-08 |
| FR2031236A6 (en) | 1970-11-13 |
| NL7000775A (en) | 1970-07-29 |
| BE745006R (en) | 1970-07-27 |
| DE1903936A1 (en) | 1970-09-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |