JPH02225537A - Production of urethane foam insulation material - Google Patents
Production of urethane foam insulation materialInfo
- Publication number
- JPH02225537A JPH02225537A JP4526189A JP4526189A JPH02225537A JP H02225537 A JPH02225537 A JP H02225537A JP 4526189 A JP4526189 A JP 4526189A JP 4526189 A JP4526189 A JP 4526189A JP H02225537 A JPH02225537 A JP H02225537A
- Authority
- JP
- Japan
- Prior art keywords
- foam insulation
- insulation material
- urethane foam
- polyol
- sodium metasilicate
- 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.)
- Granted
Links
- 239000006260 foam Substances 0.000 title claims abstract description 36
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000012774 insulation material Substances 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 24
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 24
- 235000019795 sodium metasilicate Nutrition 0.000 claims abstract description 22
- 229920005862 polyol Polymers 0.000 claims abstract description 19
- 150000003077 polyols Chemical class 0.000 claims abstract description 19
- 239000012948 isocyanate Substances 0.000 claims abstract description 13
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 13
- 238000005187 foaming Methods 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 150000007524 organic acids Chemical class 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 abstract description 7
- 229910000963 austenitic stainless steel Inorganic materials 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 12
- 239000000460 chlorine Substances 0.000 description 10
- 229910052801 chlorine Inorganic materials 0.000 description 10
- -1 chlorine ions Chemical class 0.000 description 10
- 239000007788 liquid Substances 0.000 description 9
- 235000005985 organic acids Nutrition 0.000 description 8
- 238000007796 conventional method Methods 0.000 description 7
- 230000007062 hydrolysis Effects 0.000 description 7
- 238000006460 hydrolysis reaction Methods 0.000 description 7
- 239000011810 insulating material Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 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 description 1
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- KIQKWYUGPPFMBV-UHFFFAOYSA-N diisocyanatomethane Chemical compound O=C=NCN=C=O KIQKWYUGPPFMBV-UHFFFAOYSA-N 0.000 description 1
- 238000005048 flame photometry Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229920000582 polyisocyanurate Polymers 0.000 description 1
- 239000011495 polyisocyanurate Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009283 thermal hydrolysis Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明はステンレススチールの配管、タンクなどを断
熱するためのウレタン系発泡断熱材を製造する方法に係
るものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method for manufacturing a urethane foam insulation material for insulating stainless steel piping, tanks, etc.
従来の技術
従来のウレタン系発泡断熱材の製造方法はポリオールと
イソシアネートとを所定の配合比に配合して発泡反応さ
せる方法である。BACKGROUND OF THE INVENTION A conventional method for producing a foamed urethane heat insulating material is to mix a polyol and an isocyanate in a predetermined ratio and cause a foaming reaction.
発明が解決しようとする問題点
この従来のウレタン系発泡断熱材の製造方法で造った断
熱材では例えばステンレスパイプの配管を断熱してステ
ンレスパイプの中に例えば１２０℃位の流体を通すと、
長期間経過後にウレタン系発泡断熱材は１部熱分解され
てウレタン系発泡断熱材の素原料物質である難燃剤や粗
製（クルード）メチレン・ジ・イソシアネート（クルー
ドＭＤＩ）から塩素イオンや有機酸が生成される。また
水が共存する場合に＃−１ｔ８０℃位においても加水分
解されて同様に塩素イオンや有機酸が生成される。Problems to be Solved by the Invention With this conventional urethane-based foam insulation manufacturing method, for example, when a stainless steel pipe is insulated and a fluid of about 120°C is passed through the stainless steel pipe,
After a long period of time, the urethane foam insulation material is partially thermally decomposed, and chlorine ions and organic acids are released from the flame retardant and crude methylene diisocyanate (crude MDI), which are the raw materials of the urethane foam insulation material. generated. In addition, when water coexists, it is hydrolyzed at about #-1t80°C, and chlorine ions and organic acids are similarly generated.
これらの生成物、特に塩素イオンは微量であっても長期
間のうちにオーステナイト系ステンレススチールに応力
腐食割れを生じさせる危険性があるという欠点があった
。These products, especially chlorine ions, have a disadvantage in that even a trace amount may cause stress corrosion cracking in austenitic stainless steel over a long period of time.
この発明は従来の製造方法で造ったステンレススチール
に使用されているウレタン系発泡断熱材が有する前記の
欠点を解消し、塩素イオンや有機酸の生成を防ぐことや
オーステナイト系ステンレススチールの応力腐食割れを
防ぐことなどを目的としたものである。This invention eliminates the above-mentioned drawbacks of the urethane foam insulation used in stainless steel made by conventional manufacturing methods, prevents the generation of chloride ions and organic acids, and prevents stress corrosion cracking of austenitic stainless steel. The purpose is to prevent
問題点を解決するための手段
この発８Ａ＃：ｔポリオールに約５チから約３０チの無
水メタ珪酸ナトリウムを添加し、この無水メタ珪酸ナト
リウム入りポリオールとイソシアネートとを所定の配合
比に配合して反応させて製造するものである。Means for Solving the Problem This issue 8A#: Add about 5 to about 30 g of anhydrous sodium metasilicate to the t polyol, and blend this anhydrous sodium metasilicate-containing polyol and isocyanate at a predetermined blending ratio. It is produced by reacting with
作用
この発明のウレタン系発泡断熱材の製造方法はポリオー
ルに約５チから約３０％の無水メタ珪酸ナトリウムを添
加してから、この無水メタ珪酸ナトリウム入りポリオー
ルとイソシアネートとを反応させてウレタン系発泡断熱
材を製造することによりウレタン系発泡断熱材から熱分
解加水分解による塩素イオンや有機酸の生成を防ぐから
塩素イオンや有機酸によるステンレスパイプの応力腐食
割れを防止する。Function: The method for producing the urethane foam insulation material of the present invention is to add about 5% to about 30% anhydrous sodium metasilicate to a polyol, and then react the polyol containing the anhydrous sodium metasilicate with isocyanate to form urethane foam. By manufacturing a heat insulating material, the urethane foam heat insulating material prevents the generation of chlorine ions and organic acids due to thermal decomposition and hydrolysis, thereby preventing stress corrosion cracking of stainless steel pipes caused by chlorine ions and organic acids.
実施例１
ウレタン７オーム原液のポリオール（日清紡製エアライ
ト７オームＭ−３００（２））４０Ｋｆに微粉末の無水
メタ珪酸ナトリウム（Ｎ！Ｌｘ Ｓ ｉ Ｏｓ ＡＮ
） ８ｔを添加してタンク内で無水メタ珪酸ナトリウム
が沈降しないように攪拌しつつ液温を１８℃から２０℃
位に制御する。Example 1 Finely powdered anhydrous sodium metasilicate (N!Lx S i Os AN
) Add 8t and raise the liquid temperature from 18℃ to 20℃ while stirring to prevent anhydrous sodium metasilicate from settling in the tank.
control the position.
別のタンクにイソシアネート（同社製エアライトフオー
ムＭ−３００（１））４０に＊を入れ、タンク内で液温
を１８℃から２０℃位に制御する。Isocyanate (Air Light Foam M-300 (1) manufactured by the same company) 40 is poured into a separate tank, and the liquid temperature is controlled within the tank to about 18°C to 20°C.
これらの無水メタ珪酸ナトリウム入りポリオールとイソ
シアネートの２液をウレタン発泡機（ＭＥＧ−ＭＩＮＩ
−Ｉ ）で液比を６対５にして予め３０℃位に予熱した
試験用金型（内寸１５０５ｍＸ１００■Ｘ２００ｍ）に
１．１ Ｋｆ注入してポリウレタンの発泡断熱材を造る
。These two liquids, polyol containing anhydrous sodium metasilicate and isocyanate, are processed using a urethane foaming machine (MEG-MINI).
-I) with a liquid ratio of 6:5 and inject 1.1 Kf into a test mold (inner dimensions 1505 m x 100 m x 200 m) preheated to about 30°C to produce a polyurethane foam insulation material.
この方法で製造した発泡断熱材は密度が０．３４で発泡
断熱材に含まれるメタ珪酸ナトリウムは約９．１チであ
る。The foam insulation material produced by this method has a density of 0.34, and the sodium metasilicate contained in the foam insulation material is about 9.1 inches.
実施例２
インシアヌレートフオーム原液のポリオール（日清紡製
エアライト７オームＳＡＨ５３０■）５０１１４に微粉
末の無水メタ珪酸す） ＩＪウム（ＮａＷＳ １ｏｓＡ
Ｎ） ６．５ Ｋｆを添加してタンク内で無水メタ珪酸
ナトリウムが沈降しないように攪拌しつつ液温を２０℃
から２３℃位に制御する。Example 2 Incyanurate foam stock solution polyol (Nisshinbo Airlite 7 ohm SAH530) 50114 was mixed with fine powder of anhydrous metasilicate) IJum (NaWS 1osA)
N) Add 6.5 Kf and lower the liquid temperature to 20℃ while stirring to prevent anhydrous sodium metasilicate from settling in the tank.
The temperature is controlled at around 23°C.
別のタンクにイソシアネート（同社製エアライトフオー
ム５ＡＨ−５３０（１））７０に４をタンク内で液温を
２０℃から２３℃位に制御する。In another tank, 70 to 4 parts of isocyanate (Air Light Form 5AH-530 (1) manufactured by the same company) was added and the liquid temperature was controlled at about 20°C to 23°C.
無水メタ珪酸ナトリウム入りポリオールとイソシアネー
トの２液をウレタン発泡機（ＭＥＧ−ＭＩＮＩ−Ｉ）で
液比を１１対１５にして型温６５℃位の試験用金型（内
寸５０ ｍ Ｘ ２２０ ｍ Ｘ ６００箇）Ｋ２Ｋｐ
注入してポリイソシアヌレートの発泡断熱材を造る。Two liquids, polyol containing anhydrous sodium metasilicate and isocyanate, were mixed in a urethane foaming machine (MEG-MINI-I) at a liquid ratio of 11:15, and a test mold (inner dimensions 50 m x 220 m x 600 pieces) K2Kp
Injection to create polyisocyanurate foam insulation.
この方法で製造した発泡断熱材は密度が約０．３で発泡
断熱材に含まれるメタ珪酸ナトリウムは約４．９’ｌで
ある。The foam insulation material produced by this method has a density of about 0.3, and the sodium metasilicate contained in the foam insulation material is about 4.9'l.
実施例３
ウレタンフオーム原液のポリオール（日清紡製エアライ
トフオーム１４０３０ＦＡ（Ｒ））を予め２２℃位に調
温し、この２２℃位のポリオール５０ｆを容器に入れて
から、この容器に微粉末の無水メタ珪酸ナトリウム（Ｎ
ａｓＳｉＯｓＡＮ）２．５ ｙを添加して無水メタ珪酸
ナトリウムが沈降しないように攪拌器でよく攪拌する。Example 3 A urethane foam stock solution of polyol (Nisshinbo Airite Foam 14030FA(R)) was pre-adjusted to about 22°C, and this 22°C polyol 50f was placed in a container, and then a fine powder of anhydrous powder was added to the container. Sodium metasilicate (N
Add 2.5 y of asSiOsAN) and stir well with a stirrer to prevent the anhydrous sodium metasilicate from settling.
この容器にイソシアネート（同社製１４０３０ＦＡω）
５０９を加えて２分間位攪拌し、発泡直前に別の大きな
容器に移してフリー発泡のウレタン発泡断熱材を造る。Isocyanate (14030FAω made by the company) is placed in this container.
509 and stirred for about 2 minutes, and just before foaming, transfer to another large container to create a free foaming urethane foam insulation material.
この方法で製造した発泡断熱材の密度ｔｉ０．０２２で
発泡断熱材に含まれるメタ珪酸ナトリウムは約２．４チ
である。The density of the foamed insulation material produced by this method is ti0.022, and the sodium metasilicate contained in the foamed insulation material is about 2.4ti.
これらの各実施例の方法で造ったウレタン系発泡断熱材
と従来法で造ったウレタン系発泡断熱材について塩素、
珪酸ナトリウムを分析した結果は次の通りである。Regarding the urethane foam insulation material made by the method of each of these examples and the urethane foam insulation material made by the conventional method, chlorine,
The results of analyzing sodium silicate are as follows.
第 １ 表
分析方法：それぞれの断熱材の表面のスキン部を除いて
コア部を採り、微粉末にし
てそれぞれの試料とした。Table 1 Analysis method: The core part of each heat insulating material was removed by removing the skin part from the surface, and the core part was ground into fine powder and used as a sample.
この微粉末試料をそれぞれ１０ｆを８００−の水に入れ
てガラスビーカー中で３０分間煮沸抽出した炉液を試料
として塩素イオン（Ｃｆ） Ｆｉイオンクロマトグラフ
法、珪素（Ｓｔ）Ｆｉ原子吸光法、ナ） ＩＪウム（Ｎ
ａ）は炎光光度法でそれぞれ分析した。10f of each of these fine powder samples was added to 800-g water and boiled for 30 minutes in a glass beaker to extract the furnace liquid. ) IJum(N
a) were each analyzed by flame photometry.
この分析結果より本願発明の方法で造ったウレタン系発
泡断熱材は塩素（ＣＩ）が３９０ ＰＰＭから５４０
ＰＰＭ であるのに対して従来法で造ったウレタン系発
泡断熱材は７５０ ＰＰＭであるから塩素イオンの生成
が本願発明の方法のものの方が従来法のものに較べて少
ないことが判る。From this analysis result, the chlorine (CI) content of the urethane foam insulation material made by the method of the present invention ranged from 390 PPM to 540 PPM.
PPM, whereas the urethane foam heat insulating material produced by the conventional method has a PPM of 750 PPM, so it can be seen that the production of chlorine ions by the method of the present invention is lower than that by the conventional method.
この第１表における本願発明の方法で造ったウレタン系
発泡断熱材（実施例１から３）の分析値はアメリカナシ
ョナルスタンダードのＡＳＴＭ−Ｃ−７９５（Ｓｔａｎ
ｄａｒｄ ５ｐｅｃｉｆｉｃａｔｉｏｎｆｏｒ ＷＩ
ＣＫＩＮＧ−ＴＹＰＥ ＴＨＥＭＡＬ ｌＮ５ＵＬＡ−
ＴＩＯＮ ＦＯＲＵＳＥ ０ＶＥＲＡＵＳＴＥＮＩ
ＴＩＣ８ＴＡＩＮＩＪＳＳ ５ＴＥＥＬ ）に示す許容
範囲内に入るから、本願発明の方法で造つ念ウレタン系
発泡断熱材をオーステナイト系ステンレススチールの断
熱材として使用するのに適している。The analysis values of the urethane foam insulation materials (Examples 1 to 3) produced by the method of the present invention in Table 1 are based on the American National Standard ASTM-C-795 (Stan
dard 5 specifications for WI
CKING-TYPE THEMAL IN5ULA-
TION FORUSE 0VERAUSTENI
Since it falls within the tolerance range shown in TIC8TAINIJSS5TEEL), the urethane foam insulation material produced by the method of the present invention is suitable for use as an austenitic stainless steel insulation material.
更に本願発明の実施例１と実施例２の方法で造ったウレ
タン系発泡断熱材と従来法で造ったウレタン系発泡断熱
材について加水分解について実験し念結果は次の通りで
ある。Further, hydrolysis experiments were conducted on the urethane foam insulation materials produced by the methods of Examples 1 and 2 of the present invention and the urethane foam insulation materials produced by the conventional method, and the preliminary results are as follows.
第 ２ 表
実験方法：実施例１、実施例２そして従来の方法でそれ
ぞれ造ったウレタン系発泡断熱材をそれぞれ２０ｗＸ４
０ｍＸ５０閣角に切り出してビンに入れ、水３００ ｃ
ｃを加えて密栓して８０℃の条件下で放置した。同様に
鉄イオンの作用を見るためにビンの中に銹びた鉄粉１２
を投入したものをそれぞれ別に作成し、同じ条件で放置
した。Table 2 Experimental method: The urethane foam insulation materials produced by Example 1, Example 2, and the conventional method were each 20w×4.
Cut into 0m x 50mm cubes, put in a bottle, and add 300c of water.
c was added, the mixture was sealed tightly, and the mixture was left at 80°C. Similarly, iron powder 12 was rusted in a bottle to see the effect of iron ions.
Each was prepared separately and left under the same conditions.
この実験結果より本願発明の方法で造つ念メタ珪酸ナト
リウム含有のウレタン系発泡断熱材は従来法で造ったウ
レタン系発泡断熱材に比較して加水分解反応が抑制され
て加水分解が行われ難く、加水分解による有機酸の生成
が少ないということが判る。また鉄イオンが存在すると
加水分解が促進されるが、本願発明の方法で造ったメタ
珪酸ナトリウム含有のウレタン系発泡断熱材は鉄イオン
が存在していても加水分解作用を抑制していることが判
る。From this experimental result, we believe that the urethane foam insulation material containing sodium metasilicate produced by the method of the present invention suppresses the hydrolysis reaction and is less likely to undergo hydrolysis compared to the urethane foam insulation material produced by the conventional method. It can be seen that the generation of organic acids due to hydrolysis is small. In addition, the presence of iron ions promotes hydrolysis, but the urethane foam insulation material containing sodium metasilicate produced by the method of the present invention suppresses hydrolysis even in the presence of iron ions. I understand.
なお、ポリオールに添加する無水メタ珪酸ナトリウムＦ
ｉＳＳ未満では量が少なすぎて効果が期待しがたく、３
０％よ抄多い場合は発泡成形が不可能である。In addition, anhydrous sodium metasilicate F added to the polyol
If it is less than iSS, the amount is too small to expect any effect;
If the paper content is higher than 0%, foam molding is impossible.
発明の効果
この発明のウレタン系発泡断熱材の製造方法はポリオー
ルに約５俤から約３０チの無水メタ珪酸ナトリウムを添
加してから、この無水メタ珪酸ナトリウム入りポリオー
ルとイソシアネートとを所定の配合比に配合して反応さ
せたから、造ったウレタン系発泡断熱材は熱分解によゐ
塩素イオンや有機酸の生成を防ぐことができるとともに
加水分解による塩素イオンや有機酸の生成を防ぐことが
できる。更にオーステナイト系ステンレススチールの断
熱材として用いた場合はオーステナイト系ステンレスス
チールの応力腐食割れを防ぐことができる。Effects of the Invention The method for producing a urethane foam insulation material of the present invention is to add about 5 to about 30 g of anhydrous sodium metasilicate to a polyol, and then mix the anhydrous sodium metasilicate-containing polyol and isocyanate in a predetermined compounding ratio. The urethane-based foam insulation material can prevent the production of chlorine ions and organic acids due to thermal decomposition, as well as the production of chloride ions and organic acids due to hydrolysis. Furthermore, when used as a heat insulating material for austenitic stainless steel, stress corrosion cracking of the austenitic stainless steel can be prevented.
特 許 出 願 人 株式会社昭和コーポレーション
代理人 弁理士 岩 瀬 眞 治Patent applicant Masaharu Iwase, agent of Showa Corporation, patent attorney
Claims (1)
て発泡反応させるウレタン系発泡断熱材の製造方法にお
いて、該ポリオールに約５％から約３０％の無水メタ珪
酸ナトリウムを添加してから、該無水メタ珪酸ナトリウ
ム入りポリオールとイソシアネートとを所定の配合比に
配合して反応させることを特徴とするウレタン系発泡断
熱材の製造方法。In a method for producing a urethane foam insulation material in which a polyol and an isocyanate are blended at a predetermined mixing ratio and subjected to a foaming reaction, about 5% to about 30% of anhydrous sodium metasilicate is added to the polyol, and then the anhydrous metasilicate is added to the polyol. A method for producing a urethane-based foam insulation material, which comprises blending a sodium silicate-containing polyol and an isocyanate at a predetermined mixing ratio and reacting them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4526189A JPH02225537A (en) | 1989-02-28 | 1989-02-28 | Production of urethane foam insulation material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4526189A JPH02225537A (en) | 1989-02-28 | 1989-02-28 | Production of urethane foam insulation material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02225537A true JPH02225537A (en) | 1990-09-07 |
| JPH0557295B2 JPH0557295B2 (en) | 1993-08-23 |
Family
ID=12714348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4526189A Granted JPH02225537A (en) | 1989-02-28 | 1989-02-28 | Production of urethane foam insulation material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02225537A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2113551A1 (en) * | 2008-04-29 | 2009-11-04 | Monique Georgette H. Maras | Method for manufacturing a fire-resistant foam. |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60110717A (en) * | 1983-11-21 | 1985-06-17 | Nichias Corp | Production of polyurethane foam |
-
1989
- 1989-02-28 JP JP4526189A patent/JPH02225537A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60110717A (en) * | 1983-11-21 | 1985-06-17 | Nichias Corp | Production of polyurethane foam |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2113551A1 (en) * | 2008-04-29 | 2009-11-04 | Monique Georgette H. Maras | Method for manufacturing a fire-resistant foam. |
| BE1018111A3 (en) * | 2008-04-29 | 2010-05-04 | Maras Monique Georgette H | METHOD FOR OBTAINING A FIRE-RESISTANT FOAM |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0557295B2 (en) | 1993-08-23 |
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