JPH0873556A - Highly oil-absorbing urethane foam and method for collecting spilled oil using the urethane foam - Google Patents
Highly oil-absorbing urethane foam and method for collecting spilled oil using the urethane foamInfo
- Publication number
- JPH0873556A JPH0873556A JP3352337A JP35233791A JPH0873556A JP H0873556 A JPH0873556 A JP H0873556A JP 3352337 A JP3352337 A JP 3352337A JP 35233791 A JP35233791 A JP 35233791A JP H0873556 A JPH0873556 A JP H0873556A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- urethane foam
- polyol
- additive
- highly
- 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
Landscapes
- Removal Of Floating Material (AREA)
- Water Treatment By Sorption (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はイソシアネ−ト、ポリオ
−ル、発泡剤、添加剤によつて製造された高吸油性ウレ
タンフオ−ムに関し、かつ該ウレタンフオ−ムが流出油
の現場において、その場発泡によつて製造され、フエン
ス形状又はブロツク形状又はその両者の形状のウレタン
フオ−ムとして油吸着性が大で回収効率が高く原料の運
搬が容易であり、小規模で大量の流出油を回収する方法
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a highly oil-absorbing urethane foam produced by using an isocyanate, a polyol, a foaming agent and an additive, and the urethane foam is used in the field of spilled oil. Manufactured by in-situ foaming, urethane foam in the shape of fence or block, or both of them has high oil adsorption and high recovery efficiency and easy transportation of raw materials, and collects large amount of spilled oil on a small scale. It is about how to do it.
【０００２】[0002]
【従来の技術】従来ウレタンフオ−ムは例えば海水に大
量に流出した重油の回収に適しているとされているが、
通常のウレタンフオ−ムは親油性に劣り、吸油に時間が
掛かりすぎるため、ウレタンフオ−ムをジメチルポリシ
ロキサンで後加工を施して親油性を向上せしめて、油、
水混合液中で選択的に吸油性能を向上せしめる方法があ
る（特公昭52−11339 号）。その他ポリプロピレン製マ
ツトを使用してオイルフエンスを形成せしめて海水中の
廃油を回収する方法がある。しかしながらこの場合は図
７に示すように通常のポリウレタンフオ−ムの場合より
も時間的な油吸収率が低くオイルフエンスによつて回収
されるポリプロピレンの体積当りの油回収量は少ない。2. Description of the Related Art Conventionally, urethane foam has been considered to be suitable for recovering heavy oil spilled into seawater, for example.
Ordinary urethane foam is inferior in lipophilicity, and it takes too long to absorb oil.Therefore, urethane foam is post-processed with dimethylpolysiloxane to improve lipophilicity, and oil,
There is a method of selectively improving the oil absorption performance in a water mixture (Japanese Patent Publication No. 52-11339). There is also a method of collecting waste oil in seawater by forming an oil fence using a polypropylene mat. However, in this case, as shown in FIG. 7, the oil absorption rate over time is lower than in the case of a normal polyurethane foam, and the oil recovery amount per volume of polypropylene recovered by the oil fence is small.
【０００３】[0003]
【発明が解決しようとする課題】前記特公昭52−11339
号記載の親油性ウレタンフオ−ムはウレタンフオ−ム製
造後、更に後加工の操作が必要である。またかかるウレ
タンフオ−ム又はオイルフエンス用ポリプロピレンは何
れも最終加工された嵩高いウレタンフオ−ム又はポリプ
ロピレン成形品、編織物又は不織布の形で例えば流出油
現場まで運搬せねばならず、現場発泡して直ちに使用に
供することができない。そのため海上流出油の場合は大
型の船舶を必要とする。更に前記特公昭52−11339 号記
載のウレタンフオ−ムオイルフエンス又はポリプロピレ
ン製オイルフエンスは流出油の吸収能力が低いなどの問
題点がある。[Problems to be Solved by the Invention] Japanese Patent Publication No. 52-11339
The lipophilic urethane foam described in No. 1 requires further post-processing operations after the production of the urethane foam. Further, any such polypropylene for urethane foam or oil fence must be transported to the spilled oil site, for example, in the form of a final processed bulky urethane foam or polypropylene molded product, knitted fabric or nonwoven fabric, and immediately foamed on site and immediately. Cannot be used. Therefore, a large vessel is required in the case of oil spill at sea. Further, the urethane foam oil fence or polypropylene oil fence described in Japanese Patent Publication No. 52-11339 has a problem in that it has a low ability to absorb spilled oil.
【０００４】本発明のウレタンフオ−ムはイソシアネ−
ト、ポリオ−ル、発泡剤並びに添加剤からなり、添加剤
の作用によつてウレタンフオ−ムの内部へ油の吸収と独
立又は連続気泡の間隙を拡大せしめて油の吸着を促進す
ることが可能である。更に本発明は流出油を回収するた
め高吸油性ウレタンフオ−ムを水又は海水を使用して現
場発泡せしめて油の回収に供する方法を提供するもので
ある。The urethane foam of the present invention is an isocyanate.
It is composed of a resin, a polyol, a foaming agent and an additive. By the effect of the additive, it is possible to promote the absorption of oil inside the urethane foam and to expand the gap of independent or open cells to promote the adsorption of oil. Is. Further, the present invention provides a method for recovering oil by recovering spilled oil by in situ foaming a highly oil-absorbing urethane foam using water or seawater.
【０００５】[0005]
【課題を解決するための手段】本発明はイソシアネ−
ト、ポリオ−ル、発泡剤及び添加剤からなり初期吸油量
が５g/g 以上で、かつ飽和吸油時における密度が50Kg/m
3 以下であることを特徴とする高吸油性ウレタンフオ−
ムに関するものであり、添加剤としてはポリオ−ルの10
0 重量％に対して親油性ポリオ−ルを５重量％以上含有
する。親油性ポリオ−ルとしてはイソプレン系及び／又
は重油又は炭化水素系溶剤が使用される。更に発泡剤と
しては水が使用され水とイソシアネ−トとの反応によつ
て本発明のウレタンフオ−ムが製造される。また上記の
ウレタンフオ−ム製造用溶液をそれぞれ別々にして油流
出現場へ運搬し、流出油現場で本発明の高吸油性ウレタ
ンフオ−ムをフエンス形状又はブロツク形状に製造する
か又はフエンス形状及びブロツク形状とを供用して流出
油を回収する方法に関するものである。DISCLOSURE OF THE INVENTION The present invention is an isocyanate.
It consists of resin, polyol, foaming agent and additives, and the initial oil absorption is 5g / g or more, and the density at saturated oil absorption is 50Kg / m.
Highly oil-absorbent urethane foam characterized by being 3 or less
10% of polyol as an additive.
It contains 5% by weight or more of lipophilic polyol with respect to 0% by weight. As the lipophilic polyol, isoprene-based and / or heavy oil or hydrocarbon-based solvent is used. Further, water is used as a foaming agent, and the urethane foam of the present invention is produced by the reaction of water with an isocyanate. Further, the above urethane foam-producing solution is separately transported to an oil spill site, and the highly oil-absorbing urethane foam of the present invention is manufactured into a fence shape or a block shape at the oil spill site, or a fence shape and a block shape. The present invention relates to a method for recovering spilled oil by using and.
【０００６】本発明に使用される親油性ポリオ−ルとし
てはイソプレン系、ブタジエン系、ブチレン系又はそれ
らの混合系又は共重合系ポリオ−ルが使用可能である
が、特にイソプレン系ポリオ−ルが好適である。その使
用量はイソシアネ−トと反応する全ポリオ−ルの５重量
％以上である。５重量％未満では通常のポリオ−ル例え
ばグリコ−ルを使用するウレタンフオ−ムと吸油性能が
変わらず、吸油性能を向上せしめる効果を奏しない。ま
たポリオ−ルに混合する親油性ポリオ−ルの粘度は20mp
as未満であることがウレタンフオ−ムの製造操作上から
望ましい。As the lipophilic polyol used in the present invention, isoprene-based, butadiene-based, butylene-based, or mixed or copolymeric polyols thereof can be used, but isoprene-based polyol is particularly preferable. It is suitable. The amount used is at least 5% by weight based on the total amount of polyol that reacts with the isocyanate. When the amount is less than 5% by weight, the oil absorption performance is not different from that of a urethane foam using a normal polyol such as glycol, and the effect of improving the oil absorption performance is not exhibited. The viscosity of the lipophilic polyol mixed with the polyol is 20 mp.
It is desirable to be less than as from the viewpoint of the urethane foam manufacturing operation.
【０００７】使用されるイソシアネ−トとしてはＴＤＩ
（トリレンジイソシアネ−ト）、ＭＤＩ（ジフエニルメ
タンジイソシアネ−ト）、ＮＤＩ（ナフタレンジイソシ
アネ−ト）、ＨＭＤＩ（ヘキサメチレンジイソシアネ−
ト）があるが、ＴＤＩが好適で特にＴＤＩ８０（２，４
−トリレンジイソシアネ−ト：２，６−トリレンジイソ
シアネ−ト＝８０：２０）が最適である。また添加剤に
使用される重油としてはＡ重油、Ｂ重油など、また炭化
水素系溶剤としてはトルエン、キトレン等である。The isocyanate used is TDI.
(Tolylene diisocyanate), MDI (diphenylmethane diisocyanate), NDI (naphthalene diisocyanate), HMDI (hexamethylene diisocyanate)
However, TDI is preferred and especially TDI80 (2,4
-Tolylene diisocyanate: 2,6-tolylene diisocyanate = 80:20) is most suitable. The heavy oil used as the additive is A heavy oil, B heavy oil and the like, and the hydrocarbon solvent is toluene, chitolen and the like.
【０００８】本発明のウレタンフオ−ムに親油性添加剤
としてイソプレン系ポリオ−ルを使用した場合の添加剤
の配合量（％）と吸油率（g/g)との関係を図１に示し
た。本発明は吸油開始より１分後（初期吸油量という）
の親油性添加剤の吸油率が５g/g 以上を必要とする。５
g/g 未満では吸油性ウレタンフオ−ムとして本発明に有
効に使用することができない。図１から明らかなように
初期吸油量の上限はイソプレン系ポリオ−ルを使用し、
添加剤を100 重量％配合した場合40g/g である。その他
の添加剤例えば重油や炭化水素系溶剤としてトルエン、
キシレンを使用した場合も添加剤の配合量と吸油率との
関係は図１の場合とほぼ同様の傾向を示し、かかる添加
剤の場合も初期吸油量は５g/g 以上必要である。FIG. 1 shows the relationship between the additive amount (%) and the oil absorption rate (g / g) when isoprene-based polyol is used as the lipophilic additive in the urethane foam of the present invention. . 1 minute after the start of oil absorption (referred to as initial oil absorption)
The oil absorption rate of the lipophilic additive is required to be 5 g / g or more. 5
If it is less than g / g, it cannot be effectively used in the present invention as an oil absorbing urethane foam. As is clear from FIG. 1, the upper limit of the initial oil absorption is using isoprene-based polyol,
It is 40 g / g when 100% by weight of the additive is blended. Other additives such as heavy oil or toluene as a hydrocarbon solvent,
Even when xylene is used, the relationship between the compounding amount of the additive and the oil absorption rate shows almost the same tendency as in the case of FIG. 1, and also in the case of such an additive, the initial oil absorption amount is required to be 5 g / g or more.
【０００９】本発明に使用される親油性ポリウレタンの
飽和吸油時の密度と吸油率との関係を図２に示した。図
２から明らかなように飽和吸油時の密度が50Kg/m3 以下
であることが必要で、50Kg/m3 を超過すると吸油率が低
く、本発明の高吸油性ウレタンフオ−ムとしては使用す
ることができない。親油性を持つたウレタンフオ−ムは
油をその空隙の中に取り込み易く、またウレタンフオ−
ムが流出油を吸収することによつて膨潤してフオ−ムの
空隙が拡大しウレタンフオ−ムの吸油率が更に増大す
る。この吸油率を増大せしめる効果は本発明者の研究結
果によるとイソプレン系ポリオ−ルが最大である。重
油、炭化水素系溶剤はフオ−ムの間隙を湿潤せしめるた
めに同様な効果を奏すると考えられる。The relationship between the density and the oil absorption rate of the lipophilic polyurethane used in the present invention during saturated oil absorption is shown in FIG. As is clear from FIG. 2, the density at the time of saturated oil absorption is required to be 50 kg / m 3 or less, and when it exceeds 50 kg / m 3 , the oil absorption rate is low, and it is used as the highly oil-absorbing urethane foam of the present invention. I can't. The urethane foam, which has lipophilicity, makes it easy to take oil into the voids, and the urethane foam
When the foam absorbs the spilled oil, it swells and the voids of the foam expand, and the oil absorption of the urethane foam further increases. According to the research results of the present inventor, isoprene-based polyol has the greatest effect of increasing the oil absorption rate. It is considered that heavy oil and a hydrocarbon solvent have similar effects because they moisten the pores of the foam.
【００１０】[0010]
【実施例】次に実施例によつて本発明を説明する。EXAMPLES The present invention will now be described with reference to examples.
【００１１】[0011]
【実施例１〜４、比較例１】下記成分を混合、撹拌して
ウレタンフオ−ムを製造した。比較例として添加剤を使
用することなくエ−テルポリオ−ルのみでその他の条件
を全く同様にしてウレタンフオ−ムを製造した。Examples 1 to 4 and Comparative Example 1 The following components were mixed and stirred to produce a urethane foam. As a comparative example, a urethane foam was produced in the same manner except that ether polyol was used without using any additives.
【００１２】[0012]
【表１】 [Table 1]
【００１３】次に実施例１〜４と比較例の時間と吸油率
との関係を表２に示した。Next, Table 2 shows the relationship between time and oil absorption in Examples 1 to 4 and Comparative Example.
【表２】 実施例１〜４及び比較例の時間と吸油率との関係を図３
に示した。図３の結果より親油性ポリオ−ル100 ％のみ
（実施例１）、親油性ポリオ−ル５重量％添加（実施例
２）及び親油性ポリオ−ルに重油１重量％添加（実施例
３）及び親油性ポリオ−ル100 ％に重油添加した（実施
例４）の場合は従来のポリウレタンのみの場合よりも吸
油率が最初から増加していることがわかる。[Table 2] FIG. 3 shows the relationship between time and oil absorption in Examples 1 to 4 and Comparative Example.
It was shown to. From the results of FIG. 3, only 100% of lipophilic polyol (Example 1), 5% by weight of lipophilic polyol (Example 2) and 1% by weight of heavy oil added to lipophilic polyol (Example 3) In addition, in the case of adding heavy oil to 100% of the lipophilic polyol (Example 4), it can be seen that the oil absorption rate is increased from the beginning as compared with the case of the conventional polyurethane alone.
【００１４】[0014]
【実施例５】 図４に示したように船でタンク(1) にイ
ソシアネ−トを、別のタンク(2) にポリオ−ル、触媒、
添加剤を収容して流出油回収の現場に運びタンク(1) と
タンク(2) とからポンプによつて原料を撹拌機(3) に送
り２液を混合してウレタンフオ−ムを合成し、恒温槽
(5) によつて発泡を完結せしめ、Ｕ字状に張設された離
型紙(7) 上よりウレタンフオ−ムを海上に投入してオイ
ルフエンス(8) を形成させる（図５参照）。或は製造さ
れたウレタンフオ−ムを裁断機(6) でブロツク状に切断
して同時に又は別々に海上に投入する。何れの方法でも
よいが、上記２種の形態の本発明のウレタンフオ−ムを
併用すると更に好適である。（図６参照）[Embodiment 5] As shown in FIG. 4, a vessel (1) was provided with isocyanate and another tank (2) was provided with a polyol, a catalyst,
The additive is stored and carried to the site of oil spill recovery, the raw materials are sent from the tank (1) and the tank (2) to the agitator (3) by a pump, and the two liquids are mixed to synthesize a urethane foam, Constant temperature bath
The foaming is completed by (5), and the urethane foam is put into the sea from the release paper (7) stretched in a U shape to form an oil fence (8) (see FIG. 5). Alternatively, the produced urethane foam is cut into blocks by a cutting machine (6) and simultaneously or separately put into the sea. Either method may be used, but it is more preferable to use the above-mentioned two forms of the urethane foam of the present invention in combination. (See Figure 6)
【００１５】[0015]
【発明の効果】次に本発明の効果を纏めると下記の通り
である。本発明のウレタンフオ−ムを使用することによ
つて飽和吸油時の密度が50Kg/m3以下で吸油率が従来の
ポリプロピレン編織物に比較して３〜４倍で、著しく大
である。従つて少量の製造原液で多量の流出油が吸収可
能である。また親油性を持つたウレタンフオ−ムは油を
その空隙の中に取り込み易く、空隙の多いウレタンフオ
−ムは油を多量に保持するため油の回収量が著しく大で
ある。更に油を吸収することによつて親油性のウレタン
フオ−ムが膨潤して空隙率が拡大し、吸油率が著しく増
大する。また省力化、低コストで有効に廃油の回収が可
能である。更に本発明の親油性ウレタンフオ−ムを現場
発泡することによつて、嵩高の製品を嵩の小さい原料の
ままで運搬でき、現場発泡可能のため海上への流出油の
回収率は著しく高い。The effects of the present invention are summarized as follows. By using the urethane foam of the present invention, the density at the time of saturated oil absorption is 50 kg / m 3 or less, and the oil absorption rate is 3 to 4 times that of the conventional polypropylene knitted fabric, which is remarkably large. Therefore, a large amount of spilled oil can be absorbed with a small amount of stock solution. Further, the urethane foam having lipophilicity easily takes oil into the voids thereof, and the urethane foam having many voids retains a large amount of oil, so that the amount of recovered oil is extremely large. Further, by absorbing the oil, the lipophilic urethane foam swells, the void ratio increases, and the oil absorption rate remarkably increases. In addition, waste oil can be effectively collected with labor saving and low cost. Further, by subjecting the lipophilic urethane foam of the present invention to in-situ foaming, a bulky product can be transported as a raw material having a small bulk, and since in-situ foaming is possible, the recovery rate of spilled oil to the sea is extremely high.
【図１】吸油開始より１分後の親油性添加剤配合量と吸
油率との関係を示す図。FIG. 1 is a graph showing the relationship between the amount of lipophilic additive compounded and the oil absorption rate 1 minute after the start of oil absorption.
【図２】親油性ポリオ−ルとしてイソプレン系ポリオ−
ル100 重量％使用の場合のウレタンフオ−ムの密度と吸
油率を示す図。FIG. 2 isoprene-based polyol as a lipophilic polyol
FIG. 3 is a graph showing the density and oil absorption of urethane foam when 100% by weight of the rubber is used.
【図３】本発明の実施例（１〜４）と比較例の時間と吸
油率との関係を示す図。FIG. 3 is a graph showing a relationship between time and oil absorption in Examples (1 to 4) of the present invention and Comparative Example.
【図４】廃油現場へ船で素材のイソシアネ−トとポリオ
−ル類とを別々に運搬して現場で発泡せしめてウレタン
フオ−ムのオイルフエンスか又は裁断されたウレタンフ
オ−ムブロツクを製造する装置の一実施例。[Fig. 4] Fig. 4 shows an apparatus for producing an urethane foam oil fence or a cut urethane foam block by separately transporting the raw material isocyanate and polyols to a waste oil site and foaming them at the site. An example.
【図５】船より廃油の廻りにウレタンフオ−ムのオイル
フエンスを張りめぐらした一実施例。FIG. 5 shows an embodiment in which an urethane foam oil fence is stretched around waste oil from a ship.
【図６】更にウレタンフオ−ムのブロツクをオイルフエ
ンスの中に投入した一実施例。FIG. 6 is an example in which a block of urethane foam is further put into the oil fence.
【図７】本発明のウレタンフオ−ムと従来のポリプロピ
レンマツトの油吸収率を比較した一実施例。FIG. 7 is an example comparing the oil absorption of the urethane foam of the present invention with that of a conventional polypropylene mat.
１．イソシアネ−トを収容したタンク ２．ポリオ−ル、触媒、整泡剤を収容したタンク ３．撹拌機 ４．コンベヤ ５．反応を完結させる恒温槽 ６．ウレタンフオ−ム裁断機 ７．ウレタンフオ−ム離型紙 ８．オイルを囲んだウレタンフオ−ムフエンス ９．ウレタンフオ−ムのブロツク １０．廃油の塊 1. Tank containing isocyanate 2. 2. A tank containing a polyol, a catalyst, and a foam stabilizer. Stirrer 4. Conveyor 5. Constant temperature bath for completing reaction 6. Urethane foam cutting machine 7. Urethane foam release paper 8. Urethane foam fence surrounded by oil 9. Block of urethane foam 10. Lump of waste oil
【手続補正書】[Procedure amendment]
【提出日】平成６年１月２１日[Submission date] January 21, 1994
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】全図[Correction target item name] All drawings
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図１】 FIG.
【図２】 [Fig. 2]
【図３】 [Figure 3]
【図４】 [Figure 4]
【図５】 [Figure 5]
【図６】 [Figure 6]
【図７】 [Figure 7]
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０９Ｋ 3/32 Ｓ Ｚ //(Ｃ０８Ｇ 18/69 101:00） Ｃ０８Ｌ 75:04 (72)発明者 大野 芳裕 大阪府茨木市西中条町５番７号 東洋ゴム 工業株式会社技術開発研究所内 (72)発明者 五百蔵 吉幸 大阪府茨木市西中条町５番７号 東洋ゴム 工業株式会社技術開発研究所内Continuation of the front page (51) Int.Cl. 6 Identification number Reference number in the office FI Technical display location C09K 3/32 S Z // (C08G 18/69 101: 00) C08L 75:04 (72) Inventor Yoshihiro Ohno 5-7 Nishinakajo-cho, Ibaraki City, Osaka Prefecture Toyo Tire & Rubber Co., Ltd. Technology Development Laboratory (72) Inventor Yoshiyuki Izozo 5-7 Nishinakajo-cho, Ibaraki City, Osaka Prefecture Toyo Tire & Rubber Co., Ltd. Technology Development Laboratory
Claims (5)
び添加剤からなり、初期吸油量が５g/g 以上で、かつ飽
和吸油時における密度が50Kg/m3 以下であることを特徴
とする高吸油性ウレタンフオ−ム。1. An isocyanate, a polyol, a foaming agent and an additive, which has an initial oil absorption of 5 g / g or more and a density of 50 Kg / m 3 or less at saturated oil absorption. Highly oil-absorbent urethane foam.
対して親油性ポリオ−ルを５重量％以上含有する請求項
１記載の高吸油性ウレタンフオ−ム。2. The highly oil-absorbing urethane foam according to claim 1, which contains 5% by weight or more of lipophilic polyol as an additive with respect to 100% by weight of polyol.
レン系ポリオ−ル及び／又は重油又は炭化水素系溶剤で
ある請求項１記載の高吸油性ウレタンフオ−ム。3. The highly oil-absorbing urethane foam according to claim 1, wherein the lipophilic polyol as an additive is isoprene-based polyol and / or heavy oil or a hydrocarbon-based solvent.
ソシアネ−トとの反応によつて生起する請求項１記載の
高吸油性ウレタンフオ−ム。4. The highly oil-absorbing urethane foam according to claim 1, wherein water is used as a foaming agent, and foaming is caused by a reaction between water and an isocyanate.
溶液をそれぞれ別々にして油流出現場へ運搬し、流出油
現場で高吸油性ウレタンフオ−ムを、フエンス形状又は
ブロツク形状に製造して油吸着用に供するか又は該製造
されたフエンス形状とブロツク形状とのウレタンフオ−
ムを供用して流出油の回収に供することを特徴とする高
吸油性ウレタンフオ−ムを使用した流出油の回収方法。5. The urethane foam manufacturing solution according to claim 1 is separately transported to an oil spill site, and a highly oil-absorbing urethane foam is manufactured in a fence shape or a block shape at the oil spill site to produce an oil. A urethane foam having a fence shape and a block shape, which are used for adsorption or are produced.
A method for recovering spilled oil using a highly oil-absorbing urethane foam, wherein the spilled oil is used for recovery of the spilled oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3352337A JPH0873556A (en) | 1991-12-12 | 1991-12-12 | Highly oil-absorbing urethane foam and method for collecting spilled oil using the urethane foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3352337A JPH0873556A (en) | 1991-12-12 | 1991-12-12 | Highly oil-absorbing urethane foam and method for collecting spilled oil using the urethane foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0873556A true JPH0873556A (en) | 1996-03-19 |
Family
ID=18423369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3352337A Pending JPH0873556A (en) | 1991-12-12 | 1991-12-12 | Highly oil-absorbing urethane foam and method for collecting spilled oil using the urethane foam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0873556A (en) |
-
1991
- 1991-12-12 JP JP3352337A patent/JPH0873556A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69413243T2 (en) | REGENERATION OF SOFT FOAMS | |
| DE60017847T2 (en) | Silicone foam stabilizers for the production of open-cell flexible polyurethane foams | |
| DE69624206T2 (en) | A process for the production of soft polyurethane foams | |
| DE69706139T2 (en) | METHOD FOR THE HYDROLYSIS OF POLYURETHANE DEGRADATION PRODUCTS | |
| EP0150747A2 (en) | The use of hydrophilic, highly filled polyurethanes in biological waste water purification | |
| EP3261997B1 (en) | Absorbent element, assembly and fabrication process | |
| RU2235736C2 (en) | Method of manufacturing molded polyurethane material | |
| RU98112235A (en) | FORMED FOAM POLYURETHANE WITH IMPROVED PHYSICAL PROPERTIES AND METHOD FOR PRODUCING IT | |
| GB1567398A (en) | Process for the production of polyurethane foams | |
| US20190300672A1 (en) | Sponge for oil-water separation and composition for making the same | |
| US5504124A (en) | Process for removing unwanted material from wanted material | |
| HK1010455B (en) | Process for removing polluting material from water or wet solid matter | |
| EP0148969B1 (en) | Manufacturing method of asphalt foam | |
| DE69027972T2 (en) | EXTENDED THERMAL INSULATING MATERIAL | |
| DE3810428C2 (en) | Process for the recovery of volatile halogenated hydrocarbons from closed-cell polyisocyanate polyaddition products | |
| JP3644898B2 (en) | Manufacturing method of rigid polyurethane / urea foam | |
| JPH08183905A (en) | Polyurethane foam with excellent water purification and deodorant properties | |
| JP3155809B2 (en) | Rigid polyurethane foam and method for producing the same | |
| KR102484027B1 (en) | Composition for preparing environmental oil-sorbents | |
| JP3155808B2 (en) | Rigid polyurethane foam and method for producing the same | |
| DE2946625C2 (en) | ||
| JP4236649B2 (en) | Method for decomposing urethane foam resin and method for producing resin composition | |
| CA2187737C (en) | Process for removing polluting material from water or wet solid matter | |
| CN115490905B (en) | Foam stabilizer for ultra-low density soft foam and preparation method thereof | |
| JP4282211B2 (en) | Method for decomposing urethane resin and method for producing resin composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20020514 |