JPH02305602A - Manufacture of flame retardingly treated lumber - Google Patents
Manufacture of flame retardingly treated lumberInfo
- Publication number
- JPH02305602A JPH02305602A JP12707589A JP12707589A JPH02305602A JP H02305602 A JPH02305602 A JP H02305602A JP 12707589 A JP12707589 A JP 12707589A JP 12707589 A JP12707589 A JP 12707589A JP H02305602 A JPH02305602 A JP H02305602A
- Authority
- JP
- Japan
- Prior art keywords
- wood
- treated
- heating
- pressure
- lumber
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 67
- 150000001875 compounds Chemical class 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 18
- 239000011347 resin Substances 0.000 claims abstract description 18
- 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 claims abstract description 17
- 239000003063 flame retardant Substances 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims abstract description 13
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- NJYZCEFQAIUHSD-UHFFFAOYSA-N acetoguanamine Chemical compound CC1=NC(N)=NC(N)=N1 NJYZCEFQAIUHSD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002023 wood Substances 0.000 claims description 20
- 239000010875 treated wood Substances 0.000 claims description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- -1 triazine compound Chemical class 0.000 claims description 4
- GZVHEAJQGPRDLQ-UHFFFAOYSA-N 6-phenyl-1,3,5-triazine-2,4-diamine Chemical compound NC1=NC(N)=NC(C=2C=CC=CC=2)=N1 GZVHEAJQGPRDLQ-UHFFFAOYSA-N 0.000 claims description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 239000002904 solvent Substances 0.000 abstract description 5
- 239000007787 solid Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 229920006395 saturated elastomer Polymers 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 238000005470 impregnation Methods 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229920002531 Rubberwood Polymers 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000002632 lipids Chemical class 0.000 description 2
- 239000005696 Diammonium phosphate Substances 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 229910000388 diammonium phosphate Inorganic materials 0.000 description 1
- 235000019838 diammonium phosphate Nutrition 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical compound O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- 239000010876 untreated wood Substances 0.000 description 1
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、建装材等として好適な難燃化処理された木材
の製法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for producing flame-retardant wood suitable for use as building materials and the like.
従来、木材の難燃性を向上させるためにメラミン−ホル
ムアルデヒドの初期給金物等の含有窒素系ホルムアルデ
ヒド樹脂化合物が有効であることが知られてお）、これ
らを塗布あるいは含浸させることによって、係る難燃性
木材を得ることが行なわれている。Conventionally, it has been known that nitrogen-based formaldehyde resin compounds containing melamine-formaldehyde initial charge are effective in improving the flame retardancy of wood. It is practiced to obtain combustible wood.
上記方法によって得られる難燃処理木材では、含有窒素
系ホルムアルデヒド樹脂化合物の含有量が難燃効果に影
響を及ぼし、少量であれば効果がないのは言うまでもな
い。しかしながら、該含有窒素系ホルムアルデヒド樹脂
化合物の含浸処理は、それ自体が高分子量であ）、木材
には脂質、色素、炭水化物等が含まれているため容易で
はない。In the flame-retardant treated wood obtained by the above method, the content of the nitrogen-based formaldehyde resin compound affects the flame-retardant effect, and it goes without saying that a small amount will have no effect. However, the impregnation treatment with the nitrogen-containing formaldehyde resin compound is not easy because the wood itself has a high molecular weight and contains lipids, pigments, carbohydrates, etc.
本発明はこのような木材に対して、処理効果の高い難燃
処理木材を得ることを目的とする。The object of the present invention is to obtain flame-retardant treated wood that is highly effective in treating such wood.
本出願人らは、先に特開昭６１−２０２９８６号にて木
材の寸法安定化を目的とした改良木材の製法を開示した
が、その後種々検討するに及び、係る処理方法が、樹脂
含浸等の前処理として有効であることを見出し、本発明
に至った。The present applicants previously disclosed a method for producing improved wood for the purpose of stabilizing the dimensions of wood in JP-A No. 61-202986, but after conducting various studies, it was discovered that such treatment methods include resin impregnation, etc. The present invention has been based on the discovery that it is effective as a pretreatment for.
すなわち、本発明は木材に加熱加圧処理を施した後に、
木材の難燃化に有効な含有窒素系ホルムアルデヒド樹脂
化合物を含浸、固定化処理するものである。That is, in the present invention, after heat and pressure treatment is applied to wood,
This process impregnates and fixes a nitrogen-based formaldehyde resin compound that is effective in making wood flame retardant.
本発明での加熱加圧処理としては、圧力容器中で電気ヒ
ーター、ガスヒーター、オイルヒーターなどによる加熱
と、コンプレッサーによる加圧、または水蒸気による加
熱加圧のいずれも可能であるが、中でも水蒸気による加
熱加圧が安全で経済的である。加熱加圧条件としては１
００〜２５０°Ｃ１２〜４ｏｋｇ／ｄ、処理時間は樹種
、温度、圧力によって異なるが、例えば、厚さ５０ｊ０
１のゴムの木の板材の場合で、１２０°Ｃ−２に９／ｄ
で８時間、または２１０”Ｃ−２０に９／ｄで３０分で
ある。なお、温度は１００″Ｃ以下であっても構わない
が、処理時間が長くなって経済性に欠け、２５０’Ｃ以
上では木材の細胞が破壊されて好ましくない。As the heating and pressurizing treatment in the present invention, heating using an electric heater, gas heater, oil heater, etc. in a pressure vessel, pressurizing using a compressor, or heating and pressurizing using water vapor is possible. Heating and pressurizing is safe and economical. The heating and pressurizing conditions are 1
00~250°C 12~4okg/d, processing time varies depending on the wood species, temperature, and pressure, but for example, if the thickness is 50j0
In the case of 1 rubber wood board, 9/d at 120°C-2
8 hours at 210"C-20, or 30 minutes at 9/d at 210"C.Although the temperature may be lower than 100"C, the treatment time becomes longer and is less economical. This is not preferable because the wood cells are destroyed.
含有窒素系ホルムアルデヒド樹脂化合物としては、メラ
ミン、ベンゾグアナミン、アセトグアナミン、尿素、ジ
シアンジアミド等のトリアジン化合物ちるいはアミン化
合物とホルムアルデヒドとの縮合物あるいは共縮合物を
主成分とし、これらが水、アルコール等の溶媒に溶解、
分散されたものであって、リン系、ノ・ロゲン系、三酸
化アンチモン等の難燃剤が添加されたシ、メチルアルコ
ール等のアルコールでエーテル化されるなど変性されて
いてもよい。Nitrogen-containing formaldehyde resin compounds are mainly composed of condensates or co-condensates of formaldehyde and triazine compounds such as melamine, benzoguanamine, acetoguanamine, urea, and dicyandiamide, or amine compounds, and these contain water, alcohol, etc. Dissolved in solvent,
It may be dispersed and modified by adding a flame retardant such as phosphorus type, nitrogen type or antimony trioxide, or etherified with alcohol such as methyl alcohol.
加熱加圧処理された木材は、圧力容器内で連続あるいは
一担、気乾状態に戻してから、該含有窒素系ホルムアル
デヒド樹脂化合物が含浸処理される。含浸処理は、加圧
法、常圧法、減圧法およびそれらの組合せのいずれであ
ってもよいが、減圧法がよ）効果的である。次いで、加
熱処理等の手段によって溶媒を揮散させるとともに、該
化合物合本材中に固定化させて、本発明の離燃処理木材
を得る。The wood that has been heat- and pressure-treated is returned to an air-dry state either continuously or once in a pressure vessel, and then impregnated with the nitrogen-containing formaldehyde resin compound. The impregnation treatment may be performed by a pressure method, a normal pressure method, a reduced pressure method, or a combination thereof, but a reduced pressure method is more effective. Next, the solvent is volatilized by means such as heat treatment, and the compound is immobilized in the composite material to obtain the flame release treated wood of the present invention.
本発明では、加熱加圧処理によシ木材細胞中の壁孔の破
壊及び木材中のヘミセルロース、脂質等が分解、溶出さ
れるために、次の含浸処理が高分子量の含有窒素系ホル
ムアルデヒド樹脂化合物を使用するものであっても容易
になるものと考えられる。In the present invention, since the heat and pressure treatment destroys the wall pores in the wood cells and decomposes and elutes hemicellulose, lipids, etc. in the wood, the next impregnation treatment is performed using a high molecular weight nitrogen-based formaldehyde resin compound. It is thought that it will become easier even if it is used.
実施例１
含水率１０チの５０ｆｉ厚のゴムの木の板材を圧力容器
に入れ、１０ｋｑ／ｄの飽和水蒸気で１７５°Ｃに調整
して２時間処理し、加熱加圧処理木材を得る。次いで該
圧力容器内を常圧まで下げた後に、含有窒素系ホルムア
ルデヒド樹脂化合物としてメラミンとアセトグアナミン
の比がモル比で１０：１の混合物に対してホルムアルデ
ヒドのモル比が２．０となるように４７％ホルマリンを
添加し、ＮａＯＨでｐＨを調整しながら加熱反応させて
得られたメラミン轡アセトグアナミンーホルムアルデヒ
ドの共縮合物を水を溶媒として固形分６５チに調整した
ものを、該圧力容器中に注入し、該圧力容器内を２０ｆ
ｆＨｇまで減圧し、該加熱加圧処理木材に含浸させる。Example 1 A 50fi thick rubber wood board with a moisture content of 10cm is placed in a pressure vessel and treated with saturated steam of 10kq/d at 175°C for 2 hours to obtain heat and pressure treated wood. Next, after lowering the inside of the pressure vessel to normal pressure, the molar ratio of formaldehyde to a mixture of melamine and acetoguanamine in a molar ratio of 10:1 as a nitrogen-containing formaldehyde resin compound is adjusted to be 2.0. A melamine-acetoguanamine-formaldehyde co-condensate obtained by adding 47% formalin and heating the reaction while adjusting the pH with NaOH was adjusted to a solid content of 65% using water as a solvent, and the solid content was adjusted to 65% in the pressure vessel. 20f inside the pressure vessel.
The pressure is reduced to fHg and the heat and pressure treated wood is impregnated.
注入されなかった該共縮合物を抜き取ると共に、該圧力
容器内を再び常圧まで戻して、処理木材を取υ出し、８
０″Ｃに加熱して溶媒を揮散させると共に、該縮合物を
加熱硬化させて、全重量１００重量％に対して含有量４
１！ｉ量チの難燃処理木材を得た。The co-condensate that was not injected was removed, the pressure inside the pressure vessel was returned to normal pressure, and the treated wood was taken out.
The solvent is volatilized by heating to 0''C, and the condensate is heated and cured to reduce the content to 4% by weight based on the total weight of 100%.
1! A quantity of flame retardant treated wood was obtained.
実施例２
実施例１で得られた加熱加圧処理木材を含水率８チまで
一担乾燥させたのち、再び圧力容器内に入れ、実施例１
で用いたメラミン・アセトグアナミン−ホルムアルデヒ
ド縮合物を実施例１と同様な方法で注入、含浸、硬化さ
せて含有量３７重量％の難燃処理木材を得た。Example 2 The heat and pressure treated wood obtained in Example 1 was dried to a moisture content of 8 cm, and then placed in the pressure vessel again.
The melamine-acetoguanamine-formaldehyde condensate used in Example 1 was injected, impregnated, and cured in the same manner as in Example 1 to obtain flame-retardant treated wood having a content of 37% by weight.
実施例３
実施例１において、メラミン・アセトグアナミン−ホル
ムアルデヒド共縮合物の固形分１００重量部に対して、
リン酸ジアンモニウムを１５重量施例１と同様表方法で
注入、含浸、硬化させて含有量３８重量憾の難燃処理木
材を得た。Example 3 In Example 1, based on 100 parts by weight of the solid content of the melamine/acetoguanamine-formaldehyde cocondensate,
A flame-retardant treated wood having a content of 38% by weight was obtained by injecting, impregnating and curing 15% of diammonium phosphate in the same manner as in Example 1.
比較例
加熱加圧処理しない５０ｊｆｆ厚のゴムの木の板材を圧
力容器内に入れ、実施例１で用いたメラミン・アセトグ
アナミン−ホルムアルデヒド縮金物を実施例１と同様な
方法で注入、含浸、硬化させて含有−ｆ２５ｉｉｔ係の
処理木材を得た。Comparative Example A rubber wood board with a thickness of 50 JFF that was not subjected to heat and pressure treatment was placed in a pressure vessel, and the melamine/acetoguanamine/formaldehyde condensate used in Example 1 was injected, impregnated, and cured in the same manner as in Example 1. In this way, treated wood containing -f25iit was obtained.
表ＩＫ上記の実施例、比較例及び未処理材の難燃性試験
結果を示す。Table IK shows the flame retardant test results of the above examples, comparative examples and untreated materials.
表１ 処理材及び未処理材の離燃性試験結果＊１ 処理
した木材を繊維方向に沿って１０ｆｆ厚にスライスした
ものを試料とし、これを水平に固定し、ブンゼンバーナ
ーにて炎の長さを２０ｆｉ、先端温度を１１００±５０
°Ｃに調節し、炎の先端を試料の表面に１０秒間接触さ
せたのち、炎を取り去る。この操作を試料が着火す石ま
で繰返し、その回数を記録した。Table 1 Flammability test results for treated wood and untreated wood *1 Treated wood was sliced into 10 ff thick slices along the fiber direction, fixed horizontally, and heated with a Bunsen burner to the length of the flame. 20fi, tip temperature 1100±50
℃ and allow the tip of the flame to contact the surface of the sample for 10 seconds, then remove the flame. This operation was repeated until the sample ignited, and the number of times was recorded.
＊２処理した木材をｌ ＱｆｉＸｌ ２ ＱｊｆｌＸｌ
２ Ｑｍに切断した本のを試料とし、これを水平に固
定し、ブンゼンバーナーにて炎の長さを３０鱈、先端温
度を８５０±５０°Ｃに調節し、炎の先端を試料の裏面
中央部に接触させ、炎が貫通するまでの時間を測定した
。*2 Treated wood QfiXl 2 QjflXl
Take a book cut to 2 Qm as a sample, fix it horizontally, use a Bunsen burner to adjust the length of the flame to 30 degrees, the temperature at the tip to 850 ± 50°C, and place the tip of the flame at the center of the back of the sample. The time it took for the flame to penetrate was measured.
本発明は上記の如く加熱加圧処理された木材を使用する
ために、難燃効果のある含有窒素系ホルムアルデヒド樹
脂化合物の含浸性が改善され、難燃効果の高い処理木材
が得られる。また該加熱加圧処理は木材の表面ばかりで
なく内部まで処理されるために、該含有窒素系ホルムア
ルデヒド樹脂化合物の浸透が内部まで速かに行々われる
。Since the present invention uses wood that has been heat- and pressure-treated as described above, the impregnability of the nitrogen-based formaldehyde resin compound that has a flame retardant effect is improved, and treated wood that has a high flame retardant effect can be obtained. In addition, since the heat and pressure treatment treats not only the surface of the wood but also the inside thereof, the nitrogen-containing formaldehyde resin compound rapidly penetrates into the inside.
本発明で得られた処理木材は、難燃効果ばかりで彦く、
加熱加圧処理による寸法安定性改善効果と含有窒素系ホ
ルムアルデヒド樹脂化合物の樹脂含浸効果により、寸法
安定性、耐水性、耐朽性等が一層改善され、建装材とし
てより好ましいものとなる。The treated wood obtained by the present invention has only flame retardant effects,
Due to the effect of improving dimensional stability due to heat and pressure treatment and the effect of resin impregnation with the nitrogen-based formaldehyde resin compound, dimensional stability, water resistance, decay resistance, etc. are further improved, making it more preferable as a building material.
Claims (1)
含有窒素系ホルムアルデヒド樹脂化合物を含浸させ、加
熱等の手段により該含有窒素系ホルムアルデヒド樹脂化
合物を木材中に固定化させることを特徴とする難燃処理
木材の製法。 ２、該加熱加圧処理が水蒸気による加熱加圧で、１００
〜２５０℃、２〜４０ｋｇ／ｃｍ＾２で処理する特許請
求の範囲第１項記載の難燃処理木材の製法。 ３、該含有窒素系ホルムアルデヒド樹脂化合物が、メラ
ミン、ベンゾグアナミン、アセトグアナミン、尿素、ジ
シアンジアミド等のトリアジン化合物あるいはアミノ化
合物とホルムアルデヒドとの縮合物あるいは共縮合物を
主成分とする特許請求の範囲第１項あるいは第２項記載
の難燃処理木材の製法。[Claims] 1. After placing the wood in a pressure vessel and subjecting it to heat and pressure treatment,
A method for producing flame-retardant treated wood, which comprises impregnating the wood with a nitrogen-containing formaldehyde resin compound and fixing the nitrogen-containing formaldehyde resin compound in the wood by means such as heating. 2. The heating and pressurizing treatment is heating and pressurizing with water vapor, and
The method for producing flame-retardant treated wood according to claim 1, wherein the wood is treated at ~250°C and 2-40 kg/cm^2. 3. Claim 1, wherein the nitrogen-based formaldehyde resin compound is mainly composed of a triazine compound such as melamine, benzoguanamine, acetoguanamine, urea, dicyandiamide, or a condensate or co-condensate of an amino compound and formaldehyde. Alternatively, the method for producing flame-retardant treated wood according to item 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12707589A JPH02305602A (en) | 1989-05-19 | 1989-05-19 | Manufacture of flame retardingly treated lumber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12707589A JPH02305602A (en) | 1989-05-19 | 1989-05-19 | Manufacture of flame retardingly treated lumber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02305602A true JPH02305602A (en) | 1990-12-19 |
Family
ID=14950960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12707589A Pending JPH02305602A (en) | 1989-05-19 | 1989-05-19 | Manufacture of flame retardingly treated lumber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02305602A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05192904A (en) * | 1992-01-18 | 1993-08-03 | Eidai Co Ltd | Impregnation treatment of wood |
| JP2013188932A (en) * | 2012-03-13 | 2013-09-26 | Sumitomo Forestry Co Ltd | Flame retardant woody panel manufacturing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825239A (en) * | 1971-08-04 | 1973-04-02 | ||
| JPS56151507A (en) * | 1980-04-26 | 1981-11-24 | Matsushita Electric Works Ltd | Method of treating wood |
-
1989
- 1989-05-19 JP JP12707589A patent/JPH02305602A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825239A (en) * | 1971-08-04 | 1973-04-02 | ||
| JPS56151507A (en) * | 1980-04-26 | 1981-11-24 | Matsushita Electric Works Ltd | Method of treating wood |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05192904A (en) * | 1992-01-18 | 1993-08-03 | Eidai Co Ltd | Impregnation treatment of wood |
| JP2013188932A (en) * | 2012-03-13 | 2013-09-26 | Sumitomo Forestry Co Ltd | Flame retardant woody panel manufacturing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4373010A (en) | Non-resinous, uncured tire retardant and products produced therewith | |
| US3159503A (en) | Method of imparting fire retardance to wood and the resulting product | |
| Gao et al. | Thermal degradation of wood treated with amino resins and amino resins modified with phosphate in nitrogen | |
| US3519476A (en) | Process for impregnating wood and products thereof | |
| JPH02305602A (en) | Manufacture of flame retardingly treated lumber | |
| Subyakto et al. | Improving fire retardancy of fast growing wood by coating with fire retardant and surface densification | |
| Getto et al. | Functionally graded wood in fire endurance with basic nitrogen compounds and phosphoric acid | |
| JPH04233992A (en) | Ammonium pyrophosphate composition | |
| CN115011360B (en) | Flame retardant for wood material and flame-retardant wood material | |
| Izran et al. | Properties and Performance of Rubberwood Particleboard Treated With Bp® Fire Retardant | |
| JPH0351104A (en) | Manufacture of flame-retarded | |
| Getto et al. | The functionally graded wood observed from chemical and thermal perspectives | |
| Ishihara et al. | Fire Proofing Properties of Wood and Filter Paper treated with Cationic Melamine-Formaldehyde Condensation Products: Effect of Inorganic Acids on the Fire Proofing Efficiencies | |
| Getto et al. | The fire retardance and endurance of functionally graded wood in the case of the heat‐compressed treatment method | |
| JPH06803A (en) | Manufacture of incomsustible lumber | |
| JPH0732312A (en) | Manufacture of modified wood | |
| JPH0569414A (en) | Manufacture of lumber improved in its incombustibility and dimensional stability | |
| JPH03204A (en) | Manufacture of flame-retarded wood | |
| JPH0482710A (en) | Production of modified wood | |
| JPH0482702A (en) | Production of modified wood | |
| CN111941569A (en) | Flame-retardant composition, flame-retardant wood and preparation method | |
| WO2021186010A1 (en) | Modified wood, modification solution, method of modification and use thereof | |
| ISHIHARA et al. | Fire Proofing Properties of Wood and Filter Paper treated with | |
| JPH042403B2 (en) | ||
| JP2020196174A (en) | Wooden material treatment agent composite, wooden material treatment method, and wooden material treated with the same |