DE2047489A1 - Flame retardant chipboard/plastic foam mouldings - by impregnating only the wood chips with a flame retarding salt - Google Patents
Flame retardant chipboard/plastic foam mouldings - by impregnating only the wood chips with a flame retarding saltInfo
- Publication number
- DE2047489A1 DE2047489A1 DE19702047489 DE2047489A DE2047489A1 DE 2047489 A1 DE2047489 A1 DE 2047489A1 DE 19702047489 DE19702047489 DE 19702047489 DE 2047489 A DE2047489 A DE 2047489A DE 2047489 A1 DE2047489 A1 DE 2047489A1
- Authority
- DE
- Germany
- Prior art keywords
- chips
- salt
- suspensions
- wood chips
- borates
- 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.)
- Pending
Links
- 150000003839 salts Chemical class 0.000 title claims abstract description 18
- 239000002023 wood Substances 0.000 title claims abstract description 13
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title abstract 3
- 239000011093 chipboard Substances 0.000 title description 8
- 239000003063 flame retardant Substances 0.000 title 1
- 238000010097 foam moulding Methods 0.000 title 1
- 239000002984 plastic foam Substances 0.000 title 1
- 230000000979 retarding effect Effects 0.000 title 1
- 239000004033 plastic Substances 0.000 claims abstract description 11
- 229920003023 plastic Polymers 0.000 claims abstract description 11
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004327 boric acid Substances 0.000 claims abstract description 6
- 150000001642 boronic acid derivatives Chemical class 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 14
- 230000001681 protective effect Effects 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 10
- 238000005470 impregnation Methods 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 239000007900 aqueous suspension Substances 0.000 claims description 7
- 239000000725 suspension Substances 0.000 claims description 7
- 230000002538 fungal effect Effects 0.000 claims description 4
- IZUPBVBPLAPZRR-UHFFFAOYSA-N pentachlorophenol Chemical compound OC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl IZUPBVBPLAPZRR-UHFFFAOYSA-N 0.000 claims description 4
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000004254 Ammonium phosphate Substances 0.000 claims description 2
- YXLXNENXOJSQEI-UHFFFAOYSA-L Oxine-copper Chemical compound [Cu+2].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 YXLXNENXOJSQEI-UHFFFAOYSA-L 0.000 claims description 2
- APQHKWPGGHMYKJ-UHFFFAOYSA-N Tributyltin oxide Chemical compound CCCC[Sn](CCCC)(CCCC)O[Sn](CCCC)(CCCC)CCCC APQHKWPGGHMYKJ-UHFFFAOYSA-N 0.000 claims description 2
- 229910000148 ammonium phosphate Inorganic materials 0.000 claims description 2
- 235000019289 ammonium phosphates Nutrition 0.000 claims description 2
- 229910052793 cadmium Inorganic materials 0.000 claims description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 2
- 150000004673 fluoride salts Chemical class 0.000 claims description 2
- 239000012047 saturated solution Substances 0.000 claims description 2
- 150000003751 zinc Chemical class 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 claims 1
- 230000000593 degrading effect Effects 0.000 claims 1
- 238000003825 pressing Methods 0.000 abstract description 3
- 230000000843 anti-fungal effect Effects 0.000 abstract 2
- 229910019142 PO4 Inorganic materials 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 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
- 239000000463 material Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/30—Fireproofing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/0278—Processes; Apparatus involving an additional treatment during or after impregnation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/16—Inorganic impregnating agents
- B27K3/163—Compounds of boron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/16—Inorganic impregnating agents
- B27K3/166—Compounds of phosphorus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/16—Inorganic impregnating agents
- B27K3/32—Mixtures of different inorganic impregnating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/001—Heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/04—Combined bleaching or impregnating and drying of wood
-
- 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
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
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)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
Description
Verfahren zur Herstellung von Spanplatten oder -körpern Die Erfindung betrifft ein Verfahren zur Herstellung von Spanplatten oder -körpern, die aus Holzspänen o. dgl. und einem verschäumten, entfammbaren Kunststoff bestehen. Process for the manufacture of particle board or bodies The invention relates to a process for the production of particle boards or bodies from wood chips o. The like. And a foamed, flammable plastic.
Es ist bekannt, Holzspanplatten oder andere Holzspanformteile in der Weise herzustellen, daß man Holzspänen o. dgl. einen Kunststoff zusetzt, der während des nachfolgenden Preßvorgangs ausrchäumt. Als Kunststoff wird beispielsweise verschäumbares Polyurethan verwendet. Gegenüber herkömmlichen Holzspanplatten haben die durchschäumten Platten oder Formteile ein niedrigeres spezifisches Gewicht. Darüber hinaus nehmen sie unter dem Einfluß von Feuchtigkeit nur in geringem Maße-Wasser auf und sind daher besonders für die Außenanwendung und für das Bauwesen geeignet.It is known to use chipboard or other chipboard parts in the Way to produce that wood chips o. The like. Adding a plastic that during of the subsequent pressing process clears. For example, foamable plastic is used as the plastic Polyurethane used. Compared to conventional chipboard, the foamed through Plates or molded parts have a lower specific weight. In addition, take they are only slightly exposed to water and are under the influence of moisture therefore particularly suitable for outdoor use and for construction.
Andererseits sind aber die bekannten verschäumbaren Kunststoffe entflammbar, in der Regel sogar leicht entflammbar.On the other hand, the known foamable plastics are flammable, usually even easily flammable.
Die durchschäumten Holzspanwerkstoffe sind daher durch Feuer gefährdet.The foamed-through wood chipboard materials are therefore at risk from fire.
Es ist auch bekannt, Spanplatten dadurch gegen Entflammbarkeit zu schützen, daß im wesentlichen das gesamte entflammbare Material mit einer Schutzsalzlösung behandelt wurde. Das erfordert aber recht erhebliche Schutzsalzmengen.It is also known to use this to protect chipboard against flammability Protect that essentially all of the flammable material with a protective saline solution was treated. But this requires quite considerable amounts of protective salt.
Der Erfindung liegt die Aufgabe zugrunde, den durchschäumten Werkstoff mit einem Minimum an Schutzsalzen wirksam gegen Entflammbarkeit und Feuergefährdung zu schützen.The invention is based on the object of the foamed-through material effective against flammability and fire hazard with a minimum of protective salts to protect.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Späne mit der Lösung oder Suspension eines die Entflammbarkeit herabsetzenden Schutzsalzes imprägniert werden und dann der Kunststoff ohne Schutzsalzzusatz hinzugefügt wird.This object is achieved in that the chips with the solution or suspension of a flammability-reducing protective salt impregnated and then the plastic is added without the addition of protective salt.
Auch wenn der verschäumte Kunststoff sehr viel leichter entflammbar ist als die Holzspäne, genügt die Schutz-Behandlung der Holzspäne, um die Entflammbarkeit der gesamten Spanplatte bzw. des gesamten Spankörpers auf einen ungefährlichen Wert herabzusetzen. Dieser Effekt ist um so erstaunlicher, wenn man bedenkt, daß die durchschäumten Holzspanwerkstoffe etwa 30 bis 40 % Kunststoffanteil enthalten. Der Verbrauch an Schutzsalzen ist entsprechend gering. Auch ist das Imprägnieren von Holz spänen verfahrenstechnisch leicht zu beherrschen.Even if the foamed plastic is much more flammable is than the wood shavings, the protective treatment of the wood shavings is sufficient to make the flammability the entire chipboard or the entire chip body to a safe value to belittle. This effect is all the more astonishing when you consider that the Foamed-through wood chipboard materials contain around 30 to 40% plastic. Of the Consumption of protective salts is correspondingly low. Also is the impregnation of Technically easy to control wood chips.
In gleicher Weise können die Späne zusätzlich mit der Lösung oder Suspension eines den Pilzbefall vermindernden Schutzsalzes imprägniert werden, sei es daß nacheinander oder gleichzeitig zwei verschiedene Schutzsalze aufgebracht werden, sei es, daß das die Entflamxbarkeit herabsetzende Schutzsalz auch eine fungizide Wirkung hat.In the same way, the chips can additionally with the solution or Suspension of a protective salt that reduces fungal attack is impregnated it that successively or simultaneously applied two different protective salts be it that the flammability-reducing protective salt is also a fungicidal Has an effect.
Das Imprägnieren kann dadurch erfolgen, daß die Späne mit der Lösung oder Suspension besprüht oder in diese eingetaueht werden. In der Regel genügt es, wenn die Oberflächenschicht der Späne imprägniert ist. Wenn das Imprägnieren rascher erfolgen soll oder eine tiefere Imprägnierung erwünscht ist, kann Druck bzw. Unterdruck angewendet werden.The impregnation can take place in that the chips with the solution or suspension sprayed or immersed in this. As a rule, it is sufficient when the surface layer of the chips is impregnated. If the impregnation is faster should take place or a deeper impregnation is desired, pressure or negative pressure can be used be applied.
Mit besonderem Vorteil können wässrige Lösungen oder Suspensionen verwendet werden. Solche wässrigen Lösungen oder Suspensionen sind erheblich billiger als die ebenfalls brauchbaren organischen Lösungen oder Suspensionen. Trotzdem besteht keine Gefahr, daß die in diesem Zusammenhang verwendeten wasserlöslichen Salze später, wenn der Werkstoff mit Wasser in Berührung kommt, ausgelaugt werden, weil die Späne nach dem Verschäumen vor Wassereinfluß geschützt sind. Ein weiterer Vorteil besteht darin, daß zu trockene Späne mit Hilfe des Lösungs- oder des Suspensionswassers auf die für den Preßvorgang erforderliche Feuchte eingestellt werden können.Aqueous solutions or suspensions can be used with particular advantage be used. Such aqueous solutions or suspensions are considerably cheaper than that too useful organic solutions or suspensions. Nevertheless, there is no risk that the water-soluble ones used in this context Salts are leached out later, when the material comes into contact with water, because the chips are protected from the influence of water after foaming. Another The advantage is that chips that are too dry can be removed with the aid of the solution or suspension water can be adjusted to the moisture required for the pressing process.
Wenn das Imprägnieren vor der üblichen Spänetrocknung erfolgt, kann*überschüssige Imprägnierflüssigkeit, sei es Wasser oder eine organische Flüssigkeit, ohne jede Zusatzmaßnahme entfernt werden.If the impregnation takes place before the usual drying of the chips, there may be excess Impregnating liquid, be it water or an organic liquid, without any Additional measure to be removed.
*bei der Trocknung Mit besonderem Vorteil werden zum Imprägnieren erwärmte gesättigte Lösungen verwendet. Auf diese Weise ist es möglich, viel Schutzsalz mit wenig Flüssigkeit aufzubringen.* During drying It is particularly advantageous to impregnate warmed saturated solutions are used. In this way it is possible to use a lot of protective salt apply with little liquid.
Gegen die Entflammbarkeit haben sich wässrige Lösungen oder Suspensionen von Ammonphosphat, Borsäure und/oder Boraten bewährt.Aqueous solutions or suspensions have against the flammability proven of ammonium phosphate, boric acid and / or borates.
Gegen den Pilzbefall können mit Vorteil wässrige Lösungen oder Suspensionen von Borsäure, Boraten und/oder Fluoriden verwendet werden. In gleicher Weise kommen hierfür organische Lösungen von Pentachlorphenol, Tributylzinnoxid, Kupferoxychinolin und/oder organische Kadmium- und Zinksalze in Frage.Aqueous solutions or suspensions can be used against the fungal attack boric acid, borates and / or fluorides can be used. Come in the same way for this purpose organic solutions of pentachlorophenol, tributyltin oxide, copper oxyquinoline and / or organic cadmium and zinc salts in question.
Statt oder zusätzlich zu den Holzspänen können auch Holzstaub, Holzfasern und ähnliches Material verwendet werden, Bei einem Ausführungsbeispiel wurde wie folgt vorgegangen: 10 kg Holzspäne werden unter Anwendung von 2 atü in eine gesättigte Lösung von Ammoniumhydrogenphosphat getaucht, die 5 96 Natriumfluorid als pilzwidriges Mittel enthält. Nach einer Tauchzeit von 2 Minuten werden die Späne getrocknet und zu einem Plattenformling geformt, auf dessen Oberfläche sodann 3,5 kg verschäumbares Polyurethan aufgebracht werden. Der Formling wird dann in einer beheizten Presse zu einer Platte mit den Abmessungen 280 x 100 x 2 cm3 verpreßt.Instead of or in addition to the wood chips, wood dust and wood fibers can also be used and similar material may be used. In one embodiment, such as The procedure is as follows: 10 kg of wood chips are poured into a saturated one using 2 atmospheres Immersed solution of ammonium hydrogen phosphate containing 5 96 sodium fluoride as fungal Contains funds. After an immersion time of 2 minutes, the chips are dried and to formed a plate molding, on the surface then 3.5 kg of foamable polyurethane can be applied. The molding is then in a heated press pressed into a plate with the dimensions 280 x 100 x 2 cm3.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702047489 DE2047489A1 (en) | 1970-09-26 | 1970-09-26 | Flame retardant chipboard/plastic foam mouldings - by impregnating only the wood chips with a flame retarding salt |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702047489 DE2047489A1 (en) | 1970-09-26 | 1970-09-26 | Flame retardant chipboard/plastic foam mouldings - by impregnating only the wood chips with a flame retarding salt |
Publications (1)
Publication Number | Publication Date |
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DE2047489A1 true DE2047489A1 (en) | 1972-03-30 |
Family
ID=5783505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE19702047489 Pending DE2047489A1 (en) | 1970-09-26 | 1970-09-26 | Flame retardant chipboard/plastic foam mouldings - by impregnating only the wood chips with a flame retarding salt |
Country Status (1)
Country | Link |
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DE (1) | DE2047489A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4105566A (en) * | 1975-11-04 | 1978-08-08 | Albright & Wilson Limited | Dispersion for timber treatment |
CN102993760A (en) * | 2012-12-03 | 2013-03-27 | 汕头市欣源低碳木业有限公司 | Manufacturing method of high temperature-resistant compound wood-plastic material and high temperature-resistant compound wood-plastic plate |
-
1970
- 1970-09-26 DE DE19702047489 patent/DE2047489A1/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4105566A (en) * | 1975-11-04 | 1978-08-08 | Albright & Wilson Limited | Dispersion for timber treatment |
CN102993760A (en) * | 2012-12-03 | 2013-03-27 | 汕头市欣源低碳木业有限公司 | Manufacturing method of high temperature-resistant compound wood-plastic material and high temperature-resistant compound wood-plastic plate |
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