KR101397652B1 - The composition of oil gelling agent and preparation therof - Google Patents
The composition of oil gelling agent and preparation therof Download PDFInfo
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- KR101397652B1 KR101397652B1 KR1020120075213A KR20120075213A KR101397652B1 KR 101397652 B1 KR101397652 B1 KR 101397652B1 KR 1020120075213 A KR1020120075213 A KR 1020120075213A KR 20120075213 A KR20120075213 A KR 20120075213A KR 101397652 B1 KR101397652 B1 KR 101397652B1
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
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Abstract
본 발명은 유흡착용 유류고형화제 조성물 및 그 제조방법에 관한 것으로, 스티렌계 공중합체 및 라텍스로 이루어지며, 스티렌계 공중합체를 투입하고 교반하는 교반단계, 상기 교반단계를 통해 생성된 생성물에 라텍스를 투입하여 혼합하는 혼합단계, 상기 혼합단계를 통해 생성된 혼합물을 몰딩에 투입하여 제품을 형상화하는 제품형상화단계, 상기 제품형상화단계를 통해 형상화된 생성물을 건조시켜 용매를 제거하는 용매제거단계 및 상기 용매제거단계를 통해 생성된 생성물을 몰드에서 이형하여 제품을 완성하는 몰드이형단계로 이루어진다.The present invention relates to a petroleum solidifying composition for oil adsorption and a process for producing the same, which comprises a stirring step comprising a styrenic copolymer and a latex to which a styrenic copolymer is added and stirred, A step of molding the product by molding the product through the molding step, a step of removing the solvent by removing the solvent by drying the product formed through the product shaping step, And a mold releasing step of releasing the product produced through the solvent removal step in the mold to complete the product.
Description
본 발명은 스티렌계 공중합체 및 라텍스로 이루어져 해상유출유 및 기타 유출유 제거에 탁월한 효과를 나타내는 유흡착용 유류고형화제 조성물과 그 제조방법에 관한 것이다.
The present invention relates to a petroleum solidifying composition for oil adsorption which is composed of a styrenic copolymer and a latex and exhibits an excellent effect on the removal of marine outflow oil and other runoff oil, and a method for producing the same.
본 발명은 스티렌계 공중합체 및 라텍스(Latex)로 이루어져 해상유출유 및 기타 유출유 제거에 탁월한 효과를 나타내는 유흡착용 유류고형화제 조성물과 그 제조방법에 관한 것이다.The present invention relates to a petroleum solidifying composition for oil adsorption which is composed of a styrenic copolymer and a latex and exhibits an excellent effect for removing marine outflow oil and other runoff oil, and a method for producing the same.
산업 발달에 수반되는 환경 오염은 이미 오래전부터 중요한 사회 문제로 대두되었는데, 이러한 환경 오염 중에서도 특히,해양 오염은 수산 자원을 고갈시킴은 물론, 생태계의 파괴를 야기시켜 국민 경제 및 환경에 막대한 악영향을 미치고 있다. 이러한 해양 오염에는 육지에서 만들어진 오염 물질이 해양으로 유입되면서 발생하는 오염, 선박관련 오염 물질 또는 사고가 원인이 되는 오염, 폐기물을 해양에 무단 유기함으로서 발생하는 오염 및 연안 주변의 무분별한 석유와 광물 개발 사업에 의한 오염 등이 있다. 최근에는 우리나라에서 발생한 태안사고와 미국의 엑슨 발데스호 사건 등으로 인해 원유와 선박사고에 의한 해양오염이 매우 중요한 화두로 떠올랐다. 하지만 이러한 오염을 방제하기 위해서는 증발이나 생물 분해와 같이 자연적으로 제거되는 양은 극히 소량에 불과하므로 인위적인 조작에 의해 유출유를 제거하여야 한다.Environmental pollution accompanied by industrial development has long been an important social problem. Among these environmental pollution, marine pollution not only depletes fishery resources but also causes destruction of ecosystem, causing enormous adverse effects on the national economy and the environment have. Such marine pollution includes pollution caused by the inflow of pollutants from the land into the ocean, pollution caused by ship-related pollutants or accidents, contamination caused by unauthorized waste disposal in the marine environment, and indiscriminate petroleum and mineral development around the coast. And the like. In recent years, marine pollution caused by oil and ship accidents has become a very important issue due to the Taean accident that occurred in Korea and the case of Exon Valdez in the United States. However, in order to control such pollution, the amount of natural removal such as evaporation or biodegradation is very small, so it is necessary to remove the effluent by an artificial operation.
종래의 유흡착용 고형화제는 유출유를 흡유하는 시간이 길어 방제작업에 있어서 비효율적이며, 고형화제 제조과정에서 계면활성제 성분을 포함하여 방제작업 시,담수 및 해수에 2차 오염을 야기하는 문제점을 가진다.
Conventional solidifying agents for oil adsorption are ineffective in the control work due to the long time for oil inflow from the effluent oil and have problems of causing secondary pollution of fresh water and seawater in the control work including the surfactant component in the solidifying agent production process I have.
본 발명의 목적은 단시간에 해상 유출유 및 기타 유출유를 흡수하여 오염면적을 최소화하고 고형화시켜 유출유를 제거하는 유흡착용 유류고형화제 조성물과 그 제조방법을 제공하는 것이다.
An object of the present invention is to provide a oil solidifying composition for oil adsorption, which absorbs marine runoff oil and other runoff oil in a short period of time to minimize contamination area and solidify it to remove runoff oil, and a method for producing the same.
본 발명의 목적은 스티렌계 공중합체 및 라텍스로 이루어지는 것을 특징으로 하는 유흡착용 유류고형화제 조성물을 제공함에 의해 달성된다.An object of the present invention is achieved by providing a oil solidifying composition for oil adsorption characterized by comprising a styrenic copolymer and a latex.
본 발명의 바람직한 특징에 따르면, 상기 스티렌계 공중합체 100 중량부 대비 라텍스 10 내지 200 중량부를 투입하여 이루어지는 것으로 한다.According to a preferred aspect of the present invention, 10 to 200 parts by weight of latex is added to 100 parts by weight of the styrenic copolymer.
본 발명의 더 바람직한 특징에 따르면, 상기 스티렌계 공중합체는 스티렌부틸렌스티렌 공중합체(SBS:Styrene buthylene styrene copolymer) 또는 스티렌에틸렌부틸렌스티렌 공중합체(SEBS:Styrene ethylene buthylene styrene copolymer)로 이루어지는 것으로 한다.According to a further preferred feature of the present invention, the styrenic copolymer is a styrene butylene styrene copolymer (SBS) or a styrene ethylene buthylene styrene copolymer (SEBS) .
본 발명의 더욱 바람직한 특징에 따르면, 상기 라텍스는 10 내지 80%의 고형분으로 이루어지는 것으로 한다.
According to a further preferred feature of the present invention, the latex comprises 10 to 80% solids.
또한, 본 발명의 목적은 스티렌계 공중합체를 투입하고 교반하는 교반단계, 상기 교반단계를 통해 생성된 생성물에 라텍스를 투입하여 혼합하는 혼합단계, 상기 혼합단계를 통해 생성된 혼합물을 몰딩에 투입하여 제품을 형상화하는 제품형상화단계, 상기 제품형상화단계를 통해 형상화된 생성물을 건조시켜 용매를 제거하는 용매제거단계 및 상기 용매제거단계를 통해 생성된 생성물을 몰드에서 이형하여 제품을 완성하는 몰드이형단계로 이루어지는 것을 특징으로 하는 유흡착용 유류고형화제 조성물의 제조방법을 제공함에 의해서도 달성될 수 있다.
The object of the present invention is also achieved by a method for producing a styrene-based copolymer, which comprises mixing a styrenic copolymer and stirring the mixture, mixing latex into a product produced through the stirring step, mixing the resultant mixture, A product shaping step of shaping the product, a solvent removing step of drying the product formed through the product shaping step, and a mold releasing step of removing the product produced in the solvent removing step to mold the product The present invention also provides a method for producing a oil solidifying composition for oil adsorption.
본 발명의 바람직한 특징에 따르면, 상기 교반단계는 스티렌계 공중합체를 투입하고 10 내지 100rpm에서 교반하는 것을 특징으로 이루어진다.According to a preferred feature of the present invention, the stirring step is carried out by adding a styrenic copolymer and stirring at 10 to 100 rpm.
본 발명의 더 바람직한 특징에 따르면, 상기 용매제거단계는 상기 제품형상화단계를 통해 생성된 생성물을 50 내지 120℃의 온도에서 건조시켜 용매를 제거하는 것을 특징으로 이루어진다.
According to a more preferred feature of the present invention, the solvent removing step comprises drying the product produced through the product shaping step at a temperature of 50 to 120 ° C to remove the solvent.
본 발명에 따른 유흡착용 유류고형화제 조성물과 그 제조방법은 단시간에 해상 유출유 및 기타 유출유를 흡수하여 오염면적을 최소화하고 고형화시켜 유출유를 제거하는데 탁월한 효과를 나타낸다.The oil solidifying composition for oil sorption according to the present invention and the method for producing the oil sorption sorbent according to the present invention exhibit an excellent effect for absorbing marine outflow oil and other outflow oil in a short time, minimizing the contamination area and solidifying it to remove oil spillage.
또한, 그래뉼(Granule) 타입의 분말, 구형, 막대형 및 시트(Sheet) 등의 원하는 형태로 형상화하여 최종제품을 제조할 수 있으므로, 해양 유출유, 선박 내 페유처리, 일반산업용 기름함유 폐수처리, 하천 유출유 오염방제, 토양 및 포장도로 유출유 제거 등의 다양한 산업에서의 유류 오염방지제로 사용될 수 있어 방제작업에 있어서 탁월한 효과를 나타낸다.
In addition, since the final product can be produced by shaping into a desired shape such as granule type powder, spherical shape, rod shape, and sheet, It can be used as an oil pollution preventive agent in various industries such as prevention of river runoff pollution, removal of runoff oil from soil and pavement, and thus has an excellent effect in control work.
도 1은 본 발명에 따른 유흡착용 유류고형화제 조성물의 제조방법을 나타낸 순서도이다.1 is a flowchart showing a method for producing a oil solidifying composition for oil adsorption according to the present invention.
이하에는, 본 발명의 바람직한 실시 예와 각 성분의 물성을 상세하게 설명하되, 이는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 발명을 용이하게 실시할 수 있을 정도로 상세하게 설명하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는다.
Hereinafter, preferred embodiments of the present invention and physical properties of the respective components will be described in detail with reference to the accompanying drawings. However, the present invention is not limited thereto, And this does not mean that the technical idea and scope of the present invention are limited.
본 발명에 따른 유흡착용 유류고형화제 조성물은 스티렌계 공중합체 및 라텍스로 이루어지며, 스티렌계 공중합체 100 중량부 대비 라텍스 10 내지 200 중량부를 투입하여 이루어지는 것이 바람직하다.The oil solidifying composition for oil adsorption according to the present invention is composed of a styrenic copolymer and a latex, and it is preferable that 10 to 200 parts by weight of latex is added to 100 parts by weight of the styrenic copolymer.
전술한 스티렌계 공중합체는 스티렌부틸렌스티렌 공중합체(SBS:Styrene buthylene styrene copolymer) 또는 스티렌에틸렌부틸렌스티렌 공중합체(SEBS:Styrene ethylene buthylene styrene copolymer)로 이루어진다.The styrenic copolymer is composed of a styrene butylene styrene copolymer (SBS) or a styrene ethylene butylene styrene copolymer (SEBS).
전술한 라텍스는 10 내지 80%의 고형분으로 이루어진다.
The above-mentioned latex has a solid content of 10 to 80%.
또한, 본 발명에 따른 유흡착용 유류고형화제 조성물의 제조방법은 스티렌계 공중합체를 투입하고 교반하는 교반단계(S101), 상기 교반단계(S101)를 통해 생성된 생성물에 라텍스를 투입하여 혼합하는 혼합단계(S103), 상기 혼합단계(S103)를 통해 생성된 혼합물을 몰딩에 투입하여 제품을 형상화하는 제품형상화단계(S105), 상기 제품형상화단계(S105)를 통해 형상화된 생성물을 건조시켜 용매를 제거하는 용매제거단계(S107) 및 상기 용매제거단계(S107)를 통해 생성된 생성물을 몰드에서 이형하여 제품을 완성하는 몰드이형단계(S109)로 이루어진다.
In addition, the method for preparing the oil solidifying composition for oil adsorption according to the present invention may include a stirring step (S101) in which a styrenic copolymer is added and stirred, a latex is added to a product produced through the stirring step (S101) (S103); a product shaping step (S105) for shaping the product by injecting the mixture generated through the mixing step (S103) into a molding; and drying the product formed through the product shaping step (S105) (S107), and a mold releasing step (S109) for removing the product produced through the solvent removing step (S107) from the mold to complete the product.
전술한 교반단계(S101)는 스티렌계 공중합체를 투입하고 10 내지 100rpm에서 교반하여 이루어진다. The stirring step (S101) described above is performed by charging the styrenic copolymer and stirring at 10 to 100 rpm.
전술한 혼합단계(S103)는 전술한 교반단계(S101)를 통해 생성된 생성물인 스티렌계 공중합체 100중량부 대비 라텍스 10 내지 200 중량부를 투입하여 혼합하여 이루어진다.In the mixing step (S103), 10 to 200 parts by weight of latex is added to 100 parts by weight of the styrene-based copolymer, which is the product produced through the stirring step (S101) described above.
전술한 제품형상화단계(S105) 전술한 혼합단계(S103)를 통해 생성된 혼합물을 원하는 형태의 몰딩에 투입하여 제품을 형상화하여 이루어진다.The above-described product shaping step (S105) The mixture formed through the above-described mixing step (S103) is put into a molding of a desired shape to shape the product.
전술한 용매제거단계(S107)는 전술한 제품형상화단계(S105)를 통해 형상화된 생성물을 50 내지 120℃온도에서 30 내지 150분 동안 건조시켜 용매를 제거하는 것으로 이루어진다.The above-described solvent removal step (S107) consists of drying the product shaped through the above-described product shaping step (S105) at a temperature of 50 to 120 DEG C for 30 to 150 minutes to remove the solvent.
전술한 몰드이형단계(S109)는 전술한 용매제거단계(S107)를 통해 생성된 생성물을 몰드에서 이형하여 제품을 완성하는 것으로 이루어진다.
In the mold releasing step S109, the product produced through the solvent removing step S107 described above is released from the mold to complete the product.
이하에서는 본 발명에 따른 유흡착용 유류고형화제 조성물 및 그 제조방법을 실시예를 들어 설명하기로 한다.
Hereinafter, the oil solidifying composition for oil adsorption according to the present invention and the method for producing the oil solidifying composition will be described by way of examples.
<실시예 1>≪ Example 1 >
믹서(Mixer) 내부에 스티렌에틸렌부틸렌스티렌 공중합체 100g을 투입하고 50rpm으로 교반한다. 여기에 라텍스 10g을 교반하면서 투입하여 스티렌에틸렌부틸렌스티렌 공중합체 입자를 코팅시킨다. 코팅된 혼합물을 몰딩에 투입한 후, 100℃의 건조기에서 1시간 동안 건조시켜 용매를 제거한다. 용매를 제거시킨 생성물을 몰드에서 이형하여 최종제품을 제조한다.
100 g of a styrene-ethylene-butylene styrene copolymer was charged into a mixer and stirred at 50 rpm. 10 g of latex was added thereto with stirring to coat the styrene-ethylene-butylene styrene copolymer particles. The coated mixture is put into a molding and dried in a dryer at 100 DEG C for 1 hour to remove the solvent. The solvent-free product is released from the mold to produce the final product.
<실시예 2>≪ Example 2 >
믹서(Mixer) 내부에 스티렌에틸렌부틸렌스티렌 공중합체 100g을 투입하고 50rpm으로 교반한다. 여기에 라텍스 50g을 교반하면서 투입하여 스티렌에틸렌부틸렌스티렌 공중합체 입자를 코팅시킨다. 코팅된 혼합물을 몰딩에 투입한 후, 100℃의 건조기에서 1시간 동안 건조시켜 용매를 제거한다. 용매를 제거시킨 생성물을 몰드에서 이형하여 최종제품을 제조한다.
100 g of a styrene-ethylene-butylene styrene copolymer was charged into a mixer and stirred at 50 rpm. 50 g of latex was added thereto with stirring to coat the styrene-ethylene-butylene styrene copolymer particles. The coated mixture is put into a molding and dried in a dryer at 100 DEG C for 1 hour to remove the solvent. The solvent-free product is released from the mold to produce the final product.
<실시예 3>≪ Example 3 >
믹서(Mixer) 내부에 스티렌에틸렌부틸렌스티렌 공중합체 100g을 투입하고 50rpm으로 교반한다. 여기에 라텍스 100g을 교반하면서 투입하여 스티렌에틸렌부틸렌스티렌 공중합체 입자를 코팅시킨다. 코팅된 혼합물을 몰딩에 투입한 후, 100℃의 건조기에서 1시간 동안 건조시켜 용매를 제거한다. 용매를 제거시킨 생성물을 몰드에서 이형하여 최종제품을 제조한다.
100 g of a styrene-ethylene-butylene styrene copolymer was charged into a mixer and stirred at 50 rpm. 100 g of latex was added thereto with stirring to coat the styrene-ethylene-butylene styrene copolymer particles. The coated mixture is put into a molding and dried in a dryer at 100 DEG C for 1 hour to remove the solvent. The solvent-free product is released from the mold to produce the final product.
<실시예 4><Example 4>
믹서(Mixer) 내부에 스티렌에틸렌부틸렌스티렌 공중합체 100g을 투입하고 50rpm으로 교반한다. 여기에 라텍스 200g을 교반하면서 투입하여 스티렌에틸렌부틸렌스티렌 공중합체 입자를 코팅시킨다. 코팅된 혼합물을 몰딩에 투입한 후, 100℃의 건조기에서 1시간 동안 건조시켜 용매를 제거한다. 용매를 제거시킨 생성물을 몰드에서 이형하여 최종제품을 제조한다.
100 g of a styrene-ethylene-butylene styrene copolymer was charged into a mixer and stirred at 50 rpm. 200 g of latex was added thereto with stirring to coat the styrene-ethylene-butylene styrene copolymer particles. The coated mixture is put into a molding and dried in a dryer at 100 DEG C for 1 hour to remove the solvent. The solvent-free product is released from the mold to produce the final product.
아래에는 실시예 1 내지 4를 통해 지름 300mm, 두께 10mm로 제조된 유흡착용 유류고형화제 조성물의 유(Oil)종에 따른 고형화 속도를 측정하여 표1에 나타내었다.
The solidification rate of the oil solidifying composition for oil adsorption prepared according to Examples 1 to 4 was measured according to the oil species and the results are shown in Table 1 below.
<표1><Table 1>
전술한 표 1에서 나타낸 것처럼, 본 발명에 따른 실시예을 통해 제조된 유흡착용 유류고형화제 조성물의 고형화 속도를 비교한 결과, 실시예 2을 통해 제조된 유흡착용 유류고형화제 조성물의 고형화 속도가 가장 빠른 것을 알 수 있다.
As shown in Table 1 above, the solidifying speeds of the oil solidifying composition for oil adsorption prepared through the examples according to the present invention were compared, and as a result, it was found that the solidification rate of the oil solidifying composition for oil- You can see the fastest.
따라서, 본 발명에 따른 유흡착용 유류고형화제 조성물과 그 제조방법은 단시간에 해상 유출유 및 기타 유출유를 흡수하여 오염면적을 최소화하고 고형화시켜 유출유를 제거하는데 탁월한 효과를 나타낸다.Accordingly, the oil solidifying composition for oil sorption according to the present invention and its manufacturing method exhibit an excellent effect in absorbing marine outflow oil and other outflow oil in a short time, minimizing the contamination area and solidifying it to remove oil spillage in a short time.
또한, 그래뉼(Granule) 타입의 분말, 구형, 막대형 및 시트(Sheet) 등의 원하는 형태로 형상화하여 최종제품을 제조할 수 있으므로, 해양 유출유, 선박 내 페유처리, 일반산업용 기름함유 폐수처리, 하천 유출유 오염방제, 토양 및 포장도로 유출유 제거 등의 다양한 산업에서의 유류 오염방지제로 사용될 수 있어 방제작업에 있어서 탁월한 효과를 나타낸다.
In addition, since the final product can be produced by shaping into a desired shape such as granule type powder, spherical shape, rod shape, and sheet, It can be used as an oil pollution preventive agent in various industries such as prevention of river runoff pollution, removal of runoff oil from soil and pavement, and thus has an excellent effect in control work.
S101; 교반단계
S103; 혼합단계
S105; 제품형상화단계
S107; 용매제거단계
S109; 몰드이형단계S101; Stirring step
S103; Mixing step
S105; Product shaping phase
S107; Solvent removal step
S109; Mold release step
Claims (7)
And 10 to 200 parts by weight of a latex based on 100 parts by weight of the styrenic copolymer is added to the oil solidifying composition for oil adsorption.
상기 스티렌계 공중합체는 스티렌부틸렌스티렌 공중합체(SBS:Styrene buthylene styrene copolymer) 또는 스티렌에틸렌부틸렌스티렌 공중합체(SEBS:Styrene ethylene buthylene styrene copolymer)로 이루어지는 것을 특징으로 하는 유흡착용 유류고형화제 조성물.
The method according to claim 1,
Wherein the styrenic copolymer is composed of a styrene butylene styrene copolymer (SBS) or a styrene ethylene butylene styrene copolymer (SEBS) .
상기 라텍스는 10 내지 80%의 고형분으로 이루어지는 것을 특징으로 하는 유흡착용 유류고형화제 조성물.
The method according to claim 1,
Wherein the latex has a solid content of 10 to 80%.
상기 교반단계를 통해 생성된 생성물에 라텍스를 투입하여 혼합하는 혼합단계;
상기 혼합단계를 통해 생성된 혼합물을 몰딩에 투입하여 제품을 형상화하는 제품형상화단계;
상기 제품형상화단계를 통해 형상화된 생성물을 건조시켜 용매를 제거하는 용매제거단계; 및
상기 용매제거단계를 통해 생성된 생성물을 몰드에서 이형하여 제품을 완성하는 몰드이형단계;로 이루어지는 것을 특징으로 하는 유흡착용 유류고형화제 조성물의 제조방법.
A stirring step in which a styrenic copolymer is added and stirred;
A mixing step of adding and mixing latex to the product produced through the stirring step;
A product shaping step of shaping the product by injecting the mixture produced through the mixing step into a molding;
A solvent removing step of drying the product formed through the product shaping step to remove the solvent; And
And a mold releasing step of releasing the product produced through the solvent removing step in the mold to complete the product.
상기 교반단계는 스티렌계 공중합체를 투입하고 10 내지 100rpm에서 교반하는 것을 특징으로 하는 유흡착용 유류고형화제 조성물의 제조방법.
The method of claim 5,
Wherein the stirring step is carried out by adding a styrenic copolymer and stirring at 10 to 100 rpm.
상기 용매제거단계는 상기 제품형상화단계를 통해 생성된 생성물을 50 내지 120℃의 온도에서 건조시켜 용매를 제거하는 것을 특징으로 하는 유흡착용 유류고형화제 조성물의 제조방법.The method of claim 5,
Wherein the solvent removal step comprises drying the product formed through the product shaping step at a temperature of 50 to 120 ° C to remove the solvent.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09302045A (en) * | 1996-05-14 | 1997-11-25 | Japan Synthetic Rubber Co Ltd | Oil absorbent and oil absorbing material containing the same |
| JPH10176162A (en) * | 1996-12-20 | 1998-06-30 | Ii C Ii:Kk | Lubricant-solidifying agent |
| JPH10292358A (en) * | 1997-04-16 | 1998-11-04 | Ishikawa Giken Rubber Kk | Recovering method of oil |
| KR20020025489A (en) * | 2000-09-29 | 2002-04-04 | 지혜경 | Manufacturing Method of Oil Geling Agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09302045A (en) * | 1996-05-14 | 1997-11-25 | Japan Synthetic Rubber Co Ltd | Oil absorbent and oil absorbing material containing the same |
| JPH10176162A (en) * | 1996-12-20 | 1998-06-30 | Ii C Ii:Kk | Lubricant-solidifying agent |
| JPH10292358A (en) * | 1997-04-16 | 1998-11-04 | Ishikawa Giken Rubber Kk | Recovering method of oil |
| KR20020025489A (en) * | 2000-09-29 | 2002-04-04 | 지혜경 | Manufacturing Method of Oil Geling Agent |
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