JPH0523161B2 - - Google Patents
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- Publication number
- JPH0523161B2 JPH0523161B2 JP10280686A JP10280686A JPH0523161B2 JP H0523161 B2 JPH0523161 B2 JP H0523161B2 JP 10280686 A JP10280686 A JP 10280686A JP 10280686 A JP10280686 A JP 10280686A JP H0523161 B2 JPH0523161 B2 JP H0523161B2
- Authority
- JP
- Japan
- Prior art keywords
- wood
- water
- flame
- aqueous solution
- pressure
- 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 - Fee Related
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- 239000002023 wood Substances 0.000 claims description 45
- 239000003063 flame retardant Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 25
- 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 description 15
- 239000007864 aqueous solution Substances 0.000 claims description 12
- 229920006395 saturated elastomer Polymers 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 235000002639 sodium chloride Nutrition 0.000 description 4
- 239000004254 Ammonium phosphate Substances 0.000 description 3
- 235000014466 Douglas bleu Nutrition 0.000 description 3
- 241000218683 Pseudotsuga Species 0.000 description 3
- 235000005386 Pseudotsuga menziesii var menziesii Nutrition 0.000 description 3
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 3
- 235000019289 ammonium phosphates Nutrition 0.000 description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 3
- 235000011130 ammonium sulphate Nutrition 0.000 description 3
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910021538 borax Inorganic materials 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910017053 inorganic salt Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000004328 sodium tetraborate Substances 0.000 description 2
- 235000010339 sodium tetraborate Nutrition 0.000 description 2
- 239000010875 treated wood Substances 0.000 description 2
- 235000005638 Austrian pine Nutrition 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241000218645 Cedrus Species 0.000 description 1
- 241000218691 Cupressaceae Species 0.000 description 1
- 240000006055 Dacrydium cupressinum Species 0.000 description 1
- 235000018782 Dacrydium cupressinum Nutrition 0.000 description 1
- 235000008565 Pinus banksiana Nutrition 0.000 description 1
- 244000019397 Pinus jeffreyi Species 0.000 description 1
- 235000013264 Pinus jeffreyi Nutrition 0.000 description 1
- 235000013697 Pinus resinosa Nutrition 0.000 description 1
- 235000008578 Pinus strobus Nutrition 0.000 description 1
- 235000008585 Pinus thunbergii Nutrition 0.000 description 1
- 235000014030 Podocarpus spicatus Nutrition 0.000 description 1
- 241000219492 Quercus Species 0.000 description 1
- 235000016976 Quercus macrolepis Nutrition 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 229940086066 potassium hydrogencarbonate Drugs 0.000 description 1
- 235000017985 rocky mountain lodgepole pine Nutrition 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 235000019794 sodium silicate Nutrition 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-N sodium;hydron;carbonate Chemical compound [Na+].OC(O)=O UIIMBOGNXHQVGW-UHFFFAOYSA-N 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は木材の難燃処理法に係わり、さらに詳
しくは製材した木材を圧力釜にて飽和水蒸気で加
圧加熱し、ついで、減圧下で処理して乾燥したの
ち、水溶性の防火薬剤を含浸させることによる、
木材の表面、外観状態を変えずに難燃化する処理
法に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a method for flame-retardant treatment of wood, and more specifically, the present invention relates to a method for flame-retardant treatment of wood, and more specifically, the method involves heating sawn wood under pressure with saturated steam in a pressure cooker, and then treating it under reduced pressure. After drying, impregnating it with a water-soluble fire retardant agent.
This article relates to a treatment method for making wood flame retardant without changing its surface or appearance.
木材は建材として古来から広く使用されている
が、よく燃えるという欠点がある。この改良法と
して種々の難燃処理法が知られている。その一つ
として木材の表面に防火塗料を塗装する方法があ
る。この方法では表面のみが難燃化されるだけな
ので、長時間裸火に接炎した場合には効果がな
く、また表面状態が変わる欠点がある。また防火
薬液を常圧、加圧、または減圧下で含浸せしめる
方法も知られている。この方法も薬剤が表面には
多く付着するが、内部への含浸は小さく、難燃効
果が不十分である。
Although wood has been widely used as a building material since ancient times, it has the disadvantage of being easily combustible. Various flame retardant treatment methods are known to improve this. One method is to apply fireproof paint to the surface of the wood. This method only makes the surface flame retardant, so it is not effective if exposed to an open flame for a long time, and the surface condition changes. Also known is a method of impregnating fire retardant chemicals under normal pressure, increased pressure, or reduced pressure. In this method, too, a large amount of the chemical adheres to the surface, but only a small amount of the chemical impregnates the inside, resulting in insufficient flame retardant effect.
この改良法として、特開昭59−20605号公報に
は木材の表面を炭化処理したのち防火薬剤を含浸
されることによる、含浸性の高い木材の難燃処理
法が提案されている。この方法では難燃化効果は
かなり高くなるが、なお表面近くでの含浸であつ
て、肉厚木材の難燃効果は不十分である。また、
表面が、黒く或いは発泡状態に変わる欠点があ
る。 As an improvement on this method, Japanese Patent Application Laid-Open No. 59-20605 proposes a flame retardant treatment method for highly impregnated wood, in which the surface of the wood is carbonized and then impregnated with a fire retardant agent. Although this method has a considerably high flame retardant effect, it is impregnated near the surface, and the flame retardant effect on thick wood is insufficient. Also,
The disadvantage is that the surface turns black or foamy.
本発明の目的は、製材された木材をその表面、
外観状態を変えずに、外内部ともに難燃化させる
ための処理方法を提供することにある。
The purpose of the present invention is to improve the surface of the sawn wood.
It is an object of the present invention to provide a treatment method for making both the outside and the inside flame retardant without changing the external appearance.
本発明は、製材した木材を水溶性の無機塩の水
溶液中に、含水率が40％以上になるよう浸漬さ
せ、浸漬処理された木材を圧力釜内にて飽和水蒸
気で加熱加圧し、ついで該水蒸気を排出、減圧下
で処理し、乾燥したのち、水溶性の防火薬剤を含
浸せしめる木材の難燃処理法である。
The present invention involves soaking sawn wood in an aqueous solution of water-soluble inorganic salts to a water content of 40% or more, heating and pressurizing the soaked wood with saturated steam in a pressure cooker, and then This is a flame retardant treatment method for wood in which water vapor is discharged, treated under reduced pressure, dried, and then impregnated with a water-soluble fire retardant agent.
本発明の対象とする木材は国内外産の針葉樹及
び広葉樹の区別なく種々の樹種であるが、例えば
ベイマツ、トドマツ、桧、杉、赤松、黒松、樫、
楠等を挙げることができる。 The wood targeted by the present invention is a variety of tree species including coniferous and broad-leaved trees produced domestically and abroad, such as Douglas fir, fir, cypress, cedar, red pine, black pine, oak,
Kusunoki etc. can be mentioned.
本発明では製材した木材を先ず乾燥させる必要
があるが、乾燥は特願昭60−40642号公報記載の
方法に依る。即ち、製材した木材を水溶性の無機
塩の0.1〜５重量％水溶液中に、含水率が40％以
上になるよう通常３〜24時間浸漬させる。浸漬処
理された木材は飽和水蒸気の投入口、真空ポンプ
に連なる排気口、ドレン廃液口、温度計を設けた
10mmHgの減圧と20Kg／cm2の加圧に耐える円筒形
の圧力釜に収納する。該圧力釜に飽和水蒸気を投
入し、通常110〜170℃、さらに好ましく120〜150
℃に、木材の厚みによつて異なるが、通常１〜５
時間さらに好ましくは２〜４時間加熱加圧する。
ついで飽和水蒸気を排出し、真空ポンプを運転し
て圧力釜内を700mmHg以下さらに好ましくは200
mmHg以下の減圧とし、木材の含有水を均一に沸
とう発散せしめる。0.5〜２時間後に真空ポンプ
の運転を停止し、圧力釜内を常圧に戻したのち木
材を圧力釜から取出す。圧力釜内より取出した木
材は天然及び／又は熱風式乾燥機にて含水率が20
％以下になるように、さらに好ましくは10％以下
になるように乾燥する。この方法中、肉厚が30mm
以下の薄物や割れが発生し難い樹種の木材の乾燥
には、水溶性の無機塩の水溶液への木材の浸漬は
省略できる。 In the present invention, it is necessary to first dry the sawn wood, and the drying is carried out by the method described in Japanese Patent Application No. 40642/1982. That is, the sawn wood is usually immersed in a 0.1 to 5% by weight aqueous solution of a water-soluble inorganic salt for 3 to 24 hours so that the water content becomes 40% or more. The soaked wood is equipped with a saturated steam inlet, an exhaust port connected to a vacuum pump, a drain outlet, and a thermometer.
It is stored in a cylindrical pressure cooker that can withstand a reduced pressure of 10 mmHg and an increased pressure of 20 Kg/ cm2 . Saturated steam is introduced into the pressure cooker, and the temperature is usually 110 to 170°C, more preferably 120 to 150°C.
℃, depending on the thickness of the wood, but usually 1 to 5
It is heated and pressurized for more preferably 2 to 4 hours.
Then, the saturated steam is discharged, and the vacuum pump is operated to reduce the pressure inside the pressure cooker to 700 mmHg or less, preferably 200 mmHg or less.
Reduce the pressure to below mmHg to uniformly boil and evaporate the water contained in the wood. After 0.5 to 2 hours, the operation of the vacuum pump is stopped, the pressure inside the pressure cooker is returned to normal pressure, and the wood is taken out from the pressure cooker. The wood taken out from the pressure cooker has a moisture content of 20% in natural and/or hot air dryers.
% or less, more preferably 10% or less. During this method, the wall thickness is 30mm
For drying wood of the following types of wood that are less likely to cause thinness or cracking, immersion of the wood in an aqueous solution of a water-soluble inorganic salt can be omitted.
上記の方法で乾燥した木材は、樹脂が除去され
た細胞が開口しているので、防火薬液を内部まで
十分に含浸せしめることができる。ここで用いら
れる水溶性防火薬剤は公知の無機塩や有機物であ
つて、具体的には炭酸水素ナトリウム、炭酸ソー
ダ、炭酸塩水素カリウム、炭酸カリウム、硅酸ナ
トリウム、リン酸アンモニウム、硫酸アンモニウ
ム、リン酸、ホウ酸、ホウ砂、ジシアンジアミド
などを例示できる。これら水溶性防火薬剤は通常
１〜50重量％の水溶液として用いられ、浸漬法、
スプレー法、刷毛塗り等の方法で乾燥木材に含浸
される。とくに好ましくは、乾燥木材を防火薬剤
２〜10重量％水溶液に木材の厚みが20mm以内では
３時間、20mm以上では20mmを増す毎に１時間加算
した時間浸漬して、含浸せしめる。 In the wood dried by the above method, the cells from which the resin has been removed are open, so that the interior of the wood can be sufficiently impregnated with the fire retardant chemical. The water-soluble fire retardants used here are known inorganic salts and organic substances, and specifically include sodium hydrogen carbonate, soda carbonate, potassium hydrogen carbonate, potassium carbonate, sodium silicate, ammonium phosphate, ammonium sulfate, and phosphoric acid. , boric acid, borax, dicyandiamide, etc. These water-soluble fire retardants are usually used as a 1 to 50% aqueous solution, and are
It is impregnated into dry wood by spraying, brushing, etc. Particularly preferably, dried wood is impregnated by immersing it in an aqueous solution of 2 to 10% by weight of a fire retardant for 3 hours if the thickness of the wood is 20 mm or less, and an additional hour for each additional 20 mm if the wood is thicker than 20 mm.
該防火薬剤含浸木材は天然で１週間程度乾燥し
たのち、熱風式乾燥機中10〜30時間乾燥せしめて
含水率を10〜15％程度とし、実用に供される。 The wood impregnated with the fire retardant agent is naturally dried for about a week, and then dried in a hot air dryer for 10 to 30 hours to a moisture content of about 10 to 15% before being put to practical use.
本発明の難燃処理法は、圧力釜内で木材を燃え
易くしている原因でもある樹脂を除去し、さらに
木材の細胞を開口させて十に乾燥しているので、
防火薬剤の吸収が早く、木材の外内部まで含浸さ
れるので、防火効果が大きい。また、本処理によ
つて色調、肌荒れ、ワレ、歪み等表面や外観に変
化を来たさないので、商品価値の高い難燃処理材
がられる。
The flame retardant treatment method of the present invention removes the resin that makes wood flammable in a pressure cooker, and also opens the wood cells and dries them thoroughly.
Fire retardant agents are absorbed quickly and are impregnated into the inside and outside of the wood, so they have a great fire retardant effect. Furthermore, this treatment does not cause any changes in the surface or appearance, such as color tone, rough skin, cracking, distortion, etc., resulting in a flame-retardant treated material with high commercial value.
以下実施例及び比較例を挙げて本発明を説明す
る。なお、難燃性評価は以下の方法によつて行な
つた。
The present invention will be explained below with reference to Examples and Comparative Examples. In addition, flame retardancy evaluation was performed by the following method.
難燃性評価
45度に傾けた板面に長さ20cmのブンゼンバーナ
ーを25秒間接炎し、着火の有無を調べた。Flame retardancy evaluation A Bunsen burner with a length of 20 cm was used to ignite an indirect flame for 25 seconds on a board tilted at a 45 degree angle to check for ignition.
実施例 １
長さ400mm、巾100mm、厚さ20mmに製材したベイ
マツ材を２重量％の岩塩の水溶液中に浸漬した。
10時間後木材を取出し、圧力釜に収納し、密閉し
た圧力釜に２Kg／cm2の水蒸気を送り内温を130℃
とし、５時間保つた。ついで飽和水蒸気を排気
し、圧力釜内を150mmHgの減圧とし１時間放置し
た。こののち、常圧に戻し木材を圧力釜より取出
し、10日間風乾したのち熱風式乾燥機中50℃で20
時間乾燥した。含水率は15％となつた。該乾燥材
を５重量％の炭酸水素ナトリウムの水溶液に浸漬
した。３時間後に取出し、10日間風乾したのち熱
風式乾燥機中50で20時間乾燥した。該木材を上記
の方法で難燃性を評価した結果、着火しなかつ
た。Example 1 A Douglas fir sawn to a length of 400 mm, width of 100 mm, and thickness of 20 mm was immersed in an aqueous solution of 2% by weight of rock salt.
After 10 hours, the wood was taken out and placed in a pressure cooker, and 2Kg/ cm2 of steam was fed into the sealed pressure cooker to bring the internal temperature to 130℃.
and kept it for 5 hours. Then, the saturated steam was evacuated, and the pressure inside the pressure cooker was reduced to 150 mmHg and left for 1 hour. After this, the wood was returned to normal pressure, taken out from the pressure cooker, air-dried for 10 days, and then heated at 50℃ in a hot air dryer for 20 minutes.
Dry for an hour. The moisture content was 15%. The desiccant material was immersed in a 5% by weight aqueous solution of sodium bicarbonate. It was taken out after 3 hours, air-dried for 10 days, and then dried in a hot air dryer at 50℃ for 20 hours. The flame retardance of the wood was evaluated by the method described above, and the wood did not catch fire.
実施例 ２
２重量％の岩塩の水溶液への含浸は行わず、５
重量％の炭酸水素ナトリウムの代りに３重量％の
硫酸アンモニウムと３重量％のリン酸アンモニウ
ムを含む水溶液を用いた以外は実施例１をくり返
した。該処理木材を上記の方法で難燃性を評価し
た結果、着火しなかつた。Example 2 Impregnation in an aqueous solution of 2% by weight of rock salt was not performed, and 5
Example 1 was repeated except that instead of the weight percent sodium bicarbonate, an aqueous solution containing 3 weight percent ammonium sulfate and 3 weight percent ammonium phosphate was used. The flame retardance of the treated wood was evaluated using the method described above, and it was found that it did not catch fire.
実施例 ３
５重量％の炭酸水素ナトリウムの代りに３重量
％のホウ酸と３重量％のホウ砂を含む水溶液を用
いた以外は実施例１をくり返した。該処理木材を
上記の方法で難燃性を評価した結果、着火しなか
つた。Example 3 Example 1 was repeated except that 5% by weight of sodium bicarbonate was replaced by an aqueous solution containing 3% by weight of boric acid and 3% by weight of borax. The flame retardance of the treated wood was evaluated using the method described above, and it was found that it did not catch fire.
比較例 １
ベイマツ材を実施例１と同様に製材し、３重量
％の硫酸アンモニウムと３重量％のリん酸アンモ
ニウムを含む水溶液に浸漬した。３時間後に取り
出し、10日間風乾したのち熱風式乾燥機中50℃で
20時間乾燥した。該木材を上記の方法で難燃性を
評価した結果、着火した。Comparative Example 1 Douglas fir wood was milled in the same manner as in Example 1, and immersed in an aqueous solution containing 3% by weight of ammonium sulfate and 3% by weight of ammonium phosphate. After 3 hours, it was taken out and air-dried for 10 days, then heated at 50℃ in a hot air dryer.
Dry for 20 hours. As a result of evaluating the flame retardance of the wood using the above method, it was found that the wood caught fire.
Claims (1)
に、含水率が40％以上になるよう浸漬させ、浸漬
処理された木材を圧力釜内にて飽和水蒸気で加熱
加圧し、ついで該水蒸気を排出し、減圧下で処理
し、乾燥したのち、水溶性の防火薬剤を含浸せし
めることを特徴とする木材の難燃処理法。 ２ 乾燥を含水率が20％以下になるまで行なうこ
とを特徴とする特許請求の範囲第１項記載の木材
の難燃処理法。[Claims] 1. Sawn wood is immersed in an aqueous solution of water-soluble inorganic salts so that the moisture content becomes 40% or more, and the immersed wood is heated and pressurized with saturated steam in a pressure cooker. A method for flame retardant treatment of wood, characterized in that the water vapor is then discharged, treated under reduced pressure, dried, and then impregnated with a water-soluble fire retardant agent. 2. The method for flame retardant treatment of wood according to claim 1, characterized in that drying is carried out until the moisture content becomes 20% or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10280686A JPS62257801A (en) | 1986-05-02 | 1986-05-02 | Flame-resistant treatment method of wood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10280686A JPS62257801A (en) | 1986-05-02 | 1986-05-02 | Flame-resistant treatment method of wood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62257801A JPS62257801A (en) | 1987-11-10 |
| JPH0523161B2 true JPH0523161B2 (en) | 1993-03-31 |
Family
ID=14337299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10280686A Granted JPS62257801A (en) | 1986-05-02 | 1986-05-02 | Flame-resistant treatment method of wood |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62257801A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101908948B1 (en) * | 2016-12-16 | 2018-10-18 | 주식회사 인터아이즈 | non-halogen and non-phosphorous flame-retardant solution |
-
1986
- 1986-05-02 JP JP10280686A patent/JPS62257801A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62257801A (en) | 1987-11-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |