KR20130030070A - Coolant additive with chelate compounds - Google Patents

Coolant additive with chelate compounds Download PDF

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KR20130030070A
KR20130030070A KR1020110093592A KR20110093592A KR20130030070A KR 20130030070 A KR20130030070 A KR 20130030070A KR 1020110093592 A KR1020110093592 A KR 1020110093592A KR 20110093592 A KR20110093592 A KR 20110093592A KR 20130030070 A KR20130030070 A KR 20130030070A
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weight
additive composition
edta
cooling water
functional
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임언수
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임언수
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/20—Antifreeze additives therefor, e.g. for radiator liquids
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/06—Cleaning; Combating corrosion

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubricants (AREA)

Abstract

PURPOSE: A coolant additive composition for vehicles is provided to increase the engine efficiency using a functional mineral-containing chelation solution without influencing a radiator and a pipe. CONSTITUTION: A coolant additive composition for vehicles comprises 20-30 wt% of water; 5-20 wt% of a chelate solution which is manufactured by mixing ethylenediaminetetraacetic acid(EDTA) water and one or more functional powder selected from kiyoseki, biotite, tourmaline, illite, zeolite, and mordenite; 10-20 wt% of glycol; 10-20 wt% of a sodium silicate; 10-20 wt% of liquid nanosilver. The size of the functional powder is 10-20nm. The EDTA is Na-EDTA substituted by sodium ions.

Description

킬레이트 용액을 함유하는 자동차용 냉각수 첨가제 조성물{COOLANT ADDITIVE WITH CHELATE COMPOUNDS} Coolant additive composition for automobiles containing chelating solution {COOLANT ADDITIVE WITH CHELATE COMPOUNDS}

본 발명은 킬레이트 용액을 함유하는 자동차용 냉각수 첨가제 조성물에 관한 것으로서, 구체적으로는 기능성 광물인 귀양석, 흑운모, 토르말린, 일라이트, 제올라이트, 모데나이트 중 어느 하나 이상의 광물을 에틸렌디아민테트라아세트산(EDTA)로 킬레이트 용액으로 제조한 후 이를 유효성분으로 하여 제조되는 자동차용 냉각수 첨가제 조성물에 관한 것이다.The present invention relates to a cooling water additive composition for automobiles containing a chelating solution. Specifically, any one or more minerals of functional minerals, such as jewels, biotite, tourmaline, illite, zeolite, and mordenite, may be used as ethylenediaminetetraacetic acid (EDTA). The present invention relates to a cooling water additive composition for automobiles, which is prepared by preparing a low chelating solution and then using it as an active ingredient.

일반적으로 자동차의 엔진이 작동하게 되면, 실린더 내부의 연소열은 약 2,000℃ 내지 2,500℃에 이르게 되며, 이 고온의 연소열이 실린더 벽, 실린더 헤드, 피스톤, 밸브 등으로 전도된다.In general, when the engine of an automobile is operated, the heat of combustion in the cylinder reaches about 2,000 ° C to 2,500 ° C, and this high temperature combustion heat is conducted to the cylinder wall, the cylinder head, the piston, the valve, and the like.

만약, 이러한 부분의 온도가 너무 높아지게 되면 부품재료의 강도가 저하되어 고장이 생기게 되거나, 수명이 단축되고, 연소상태도 나빠지게 되어 노킹(knocking)이나 조기점화 등으로 인하여 엔진의 출력이 저하되며, 피스톤과 실린더 벽에 공간이 생겨 윤활유 등이 실린더 내부로 유입되면 불완전 연소로 인한 매연이 증가되어 환경오염에 주범이 되는 실정이다.If the temperature of such a part becomes too high, the strength of the part material decreases, and a failure occurs, or the life of the part decreases, and the combustion state worsens, and the output of the engine decreases due to knocking or premature ignition. If space is created in the piston and the cylinder wall, and lubricating oil is introduced into the cylinder, the smoke is increased due to incomplete combustion, which is the main cause of environmental pollution.

따라서 자동차에는 이러한 고온의 열을 식혀주기 위한 냉각장치가 설치되어 있어서, 냉각수가 워터펌프에 의해 엔진으로부터 라디에이터를 거쳐서 순환되도록 하면서 상기한 라디에이터에서 냉각팬에 의해 공냉 되도록 함으로써 엔진이 과열되는 것을 방지하고 있다.Therefore, the car is equipped with a cooling device for cooling such a high temperature heat, so that the cooling water is circulated from the engine through the radiator by the water pump while allowing the air to be cooled by the cooling fan in the radiator to prevent the engine from overheating have.

종래의 냉각수를 보면 대부분이 물을 사용하여 왔고, 라디에이터나 엔진의 재질은 황동을 주로 사용하였으나, 최근에는 무게를 가볍게 하고 강성과 내압성이 보강된 알루미늄 합금을 많이 사용하고 있는바, 냉각수에 부식 방지제 또는 동결 방지제를 함께 혼합하여 사용하고 있다.In the conventional cooling water, most of the water has been used, and the radiator or engine is mainly made of brass, but recently, many aluminum alloys have been used that are light in weight and reinforced with stiffness and pressure resistance. Alternatively, cryoprotectants are mixed and used.

그러나 상기한 종래의 냉각수가 대부분 물로만 이루어져 엔진이 과열하게 되면 라디에이터에서 충분한 냉각이 이루어 지지 않아 결국 엔진이 과열하게 되고 이로 인한 피스톤과 실린더의 마모가 더욱 심해지며, 실린더 내부의 피스톤에 틈새가 생겨 윤활유 등이 실린더 내부로 유입되어 불완전 연소로 인한 매연이 증가하여 환경오염에도 주범이 되며, 자동차의 공회전으로 인한 연료의 손실도 허다하게 발생되어 연간 낭비되는 에너지가 기하급수적으로 늘어나고 있는 실정이다.However, when the engine is overheated because the conventional coolant is mostly made of water, the radiator is not sufficiently cooled, resulting in overheating of the engine, resulting in more abrasion of the piston and cylinder, and a gap in the piston inside the cylinder. Lubricating oil is introduced into the cylinder, so the smoke from incomplete combustion increases, leading to environmental pollution, and the loss of fuel due to the idling of the car is also generated so much that the annual wasted energy is increasing exponentially.

이러한 문제점으로 인해 더 빠르고 안정적인 냉각 효율을 높일 수 있는 새로운 냉각수 첨가제의 출현이 절실히 요구되고 있었는데, 이러한 욕구를 충족시키기 위하여 대한민국등록특허 제10-0684370호에서는 흑연분말과 염화칼슘, 질산염을 물에 혼합시킨 냉각수 첨가제를 제안하여 고온에 의한 엔진 손상을 방지하며 엔진의 성능을 향상시킴은 물론 방식제 및 부동제를 첨가하여 엔진의 내구성을 높일 수 있도록 하였으며, 대한민국등록특허 제10-0911940호에서는 게르마늄, 토르말린, 대나무목초액, 글리콜, 칼슘, 제올라이트, 청관제, 맥반석을 물과 혼합하여 제조된 자동차 냉각수 첨가용 조성물을 제안하여 친환경적이면서도 매연을 절감시키도록 하였다.Due to this problem, the emergence of a new coolant additive is urgently required to increase the faster and more stable cooling efficiency. In order to satisfy this desire, Korean Patent No. 10-0684370 is a mixture of graphite powder, calcium chloride and nitrate in water Proposed coolant additive prevents engine damage due to high temperature, improves engine performance, and adds anticorrosive and antifreeze agent to increase engine durability. In Korean Patent No. 10-0911940, germanium, tourmaline , Bamboo wood vinegar, glycol, calcium, zeolite, rust agent, elvan was proposed by the composition for the addition of automotive cooling water was added to reduce the eco-friendly and smoke.

그러나, 상기 제안된 기술들은 모두 광석 분말을 직접적으로 물에 혼합한 것으로서 냉각수로 작용시에 라디에이터의 배관을 막히게 하는 원인이 되었으며, 냉각수 회전시 분말이 직접적으로 배관에 마찰을 일으키며 차체에서 소음이 다량으로 발생케 하는 원인이 되었을 뿐만 아니라 목초액 등의 무기산을 혼합하여 사용함으로써 라디에이터가 부식되는 등의 문제점은 여전히 남아 있었다.However, all of the above proposed techniques are a mixture of ore powder directly into water, which causes the pipes of the radiator to be blocked when acting as a coolant, and when the coolant rotates, the powder directly rubs the pipes and generates a lot of noise in the vehicle body. In addition to the cause caused by the use of a mixture of inorganic acids, such as wood vinegar, such as the problem of radiator corrosion still remained.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서,SUMMARY OF THE INVENTION The present invention has been made to solve the above problems,

본 발명은 기능성 광물을 킬레이션 용액으로 제조한 후 냉각수 첨가제 조성물에 포함시킴으로써 냉각 중에 라디에이터나 배관에 영향을 주지 않으면서도 친환경적으로 엔진의 효율을 높일 수 있는 자동차용 냉각수 첨가제 조성물을 제공함에 그 목적이 있다.The present invention is to provide a cooling water additive composition for automobiles that can increase the efficiency of the engine environmentally without affecting the radiator or piping during cooling by preparing a functional mineral in a chelation solution and then included in the cooling water additive composition. have.

또한, 본 발명은 킬레이트 용액상태로 존재하는 기능성 광물을 이용함으로써 기존의 냉각수 첨가제 조성물에 비해 적은 양의 기능성 광물을 사용하면서도 엔진의 효율을 높이고 배기가스의 양을 절감시킬 수 있으며 부동액으로서 역할까지 담당하는 자동차용 냉각수 첨가제 조성물을 제공함에 또 다른 목적이 있다. In addition, the present invention can increase the efficiency of the engine and reduce the amount of exhaust gas by using a functional mineral present in the chelating solution state compared to the existing cooling water additive composition, and also plays a role as an antifreeze. Another object is to provide a cooling water additive composition for automobiles.

상기와 같은 과제를 해결하기 위하여, 본 발명에 의한 킬레이트 용액을 함유하는 자동차용 냉각수 첨가제 조성물은, 물 20~30중량%, 귀양석, 흑운모, 토르말린, 일라이트, 제올라이트, 모데나이트 중 어느 하나 이상의 기능성 광물의 분말을 에틸렌디아민테트라아세트산(EDTA)과 혼합하여 제조된 킬레이트 용액 5~20중량%, 글리콜 10~20중량%, 규산나트륨 10~20중량%, 게르마늄 10~20중량%, 콜로이드 상태의 은나노 10~20중량%로 조성되는 것을 특징으로 한다.In order to solve the above problems, automotive coolant additive composition containing a chelating solution according to the present invention, 20-30% by weight of water, gemstone, biotite, tourmaline, illite, zeolite, mordenite 5-20% by weight of the chelate solution prepared by mixing the powder of functional minerals with ethylenediaminetetraacetic acid (EDTA), 10-20% by weight of glycol, 10-20% by weight of sodium silicate, 10-20% by weight of germanium, colloidal It is characterized in that the composition of silver nano 10 to 20% by weight.

귀양석은 높은 계면활성효과를 가지는 광물로서 토르말린의 10배 정도의 다량의 음이온을 발생하고 방사는 원소를 함유하지 않아 인체에 무해한 천연광물이다. 흑운모는 지속적인 복사열 방출로 연료의 효율이 증대되는 효과를 가져오게 된다. 토르말린은 영구적으로 전기적 성질을 가지며, 원자들의 불규칙적인 흔들림을 통해 음이온을 지속적으로 발생시키는 특징이 있다. Guiyang is a mineral that has a high surfactant activity and generates a large amount of negative ions about 10 times of tourmaline, and radiation is a natural mineral that is harmless to humans because it does not contain elements. Biotite has the effect of increasing fuel efficiency due to continuous radiant heat release. Tourmaline has a permanent electrical property and continuously generates negative ions through irregular shaking of atoms.

이때, 상기 에틸렌디아민테트라아세트산(EDTA)은 나트륨 이온이 결합되어 있는 Na-EDTA인 것이 바람직하다. 나트륨 이온이 결합된 경우에는 칼슘(Ca)이온과 킬레이트 화합물을 잘 형성하게 되는데, 본 발명의 기능성 광물들은 대부분 칼슘(Ca)이온을 함유하고 있어 적은 양의 기능성 광물 분말로도 충분히 EDTA에 분산시켜 킬레이트 용액을 제조할 수 있도록 하기 위함이다. 한편, 상기 글리콜은 에틸렌글리콜을 사용하는 것이 좋으며 부동액으로서의 역할을 담당하게 된다.In this case, the ethylenediaminetetraacetic acid (EDTA) is preferably Na-EDTA to which sodium ions are bonded. When sodium ions are combined, calcium (Ca) ions and chelating compounds are well formed. The functional minerals of the present invention contain calcium (Ca) ions mostly, so that even a small amount of functional mineral powder is sufficiently dispersed in EDTA. In order to be able to prepare a chelate solution. On the other hand, the glycol is preferably used ethylene glycol and plays a role as an antifreeze.

한편, 규산나트륨은 각 기능성 광물의 분말입자에 각각 코팅제로서 기능을 담당하여 기능성 광물의 분말들이 서로 뭉쳐져 덩어리로 되는 것을 방지하는 기능을 담당하며 분산효과를 증대시키는데도 그 역할을 하게 된다. Meanwhile, sodium silicate functions as a coating agent to powder particles of each functional mineral, and serves to prevent the functional mineral powders from agglomerating into agglomerates and to increase the dispersing effect.

또한, 본 발명은 상기 기능성 광물 분말의 크기는 10~20㎚인 것이 바람직하다. 통상적으로 기능성 광물의 분말을 물에 바로 혼합할 때에는 라디에이터 배관과의 마찰로 인한 소음발생이나 폐색을 방지하기 위하여 그 크기를 5㎚까지 분쇄하여야 하나, 킬레이트 용액으로 만들어 사용하는 경우에는 10~20㎚까지만 분쇄하여도 충분히 그 기능을 발휘할 수 있기 때문에 분말가공에 드는 노력을 줄일 수 있다.In addition, the present invention is preferably the size of the functional mineral powder is 10 ~ 20nm. In general, when mixing the powder of functional minerals directly with water, the size should be pulverized up to 5nm to prevent noise or blockage due to friction with radiator pipe. The grinding process can be sufficiently performed to reduce the effort required for powder processing.

아울러, 게르마늄은 열이나 빛에 의해 미세전류를 발생시키게 되며, 전자의 창한 침투압으로 반도체 현상이 발생된다는 특징이 있다.  In addition, germanium generates a microcurrent by heat or light, and has a characteristic that a semiconductor phenomenon occurs due to a window penetration pressure of electrons.

한편, 상기와 같은 기능성 광물 및 게르마늄이나 은나노 등의 역할로 자동차 엔진 및 냉각 라디에이터 부분의 수소이온이 증폭되며 이는 엔진룸의 환경을 (-) 전하인 상태로 유지시켜 엔진의 폭발력과 완전연소를 도와 연료의 효율 향상 및 매연을 감소시키는 등의 효과를 불러 일으키게 된다. On the other hand, hydrogen ions in the automobile engine and cooling radiator are amplified by the functional minerals and germanium or silver nano as described above, which helps the engine to explode and completely burn by maintaining the environment of the engine room in a negative charge. This will bring about effects such as improving fuel efficiency and reducing soot.

본 발명은 기능성 광물을 킬레이션 용액으로 제조한 후 냉각수 첨가제 조성물에 포함시킴으로써 냉각 중에 라디에이터나 배관에 전혀 영향을 주지 않으면서도 소음발생도 줄이며 친환경적으로 연료 및 엔진의 효율을 높일 수 있다는 장점이 있다.The present invention has the advantage that by producing a functional mineral in a chelation solution and then included in the cooling water additive composition, while reducing the noise and environmentally friendly fuel and engine efficiency without affecting the radiator or piping during cooling.

또한, 본 발명은 킬레이트 용액상태로 존재하는 기능성 광물을 이용함으로써 기존의 냉각수 첨가제 조성물에 비해 적은 양의 기능성 광물을 사용하면서도 기능성 광물 등을 나노화하는 노력을 경감함으로써 생산비를 절감시킬 수 있다는 다른 장점이 있다. In addition, the present invention by using the functional minerals present in the chelating solution state compared to the existing cooling water additive composition, while reducing the effort to nano-functionalize the functional minerals while using a small amount of functional minerals, there is another advantage that can be reduced have.

이하, 본 발명의 일실시예를 통해 본 발명을 상세하게 설명하기로 한다.
Hereinafter, the present invention will be described in detail through an embodiment of the present invention.

먼저, 귀양석, 흑운모, 토르말린의 분말을 Na-EDTA에 혼합하여 먼저 킬레이트 용액을 제조한다. 이때 사용된 기능성 광물 분말의 크기는 15~16㎚이었으며, 귀양석 분말 25g, 흑운모 분말 18g, 토르말린 분말 20g을 Na-EDTA 300㎖에 혼합한 후 분산시켜 킬레이트 용액을 제조하였다.First, a chelating solution is first prepared by mixing the powder of gemstone, biotite and tourmaline with Na-EDTA. At this time, the size of the functional mineral powder used was 15 ~ 16nm, 25g guinea pig powder, 18g biotite powder, 18g tourmaline powder 20g mixed with 300ml Na-EDTA and dispersed to prepare a chelate solution.

제조된 킬레이트 용액의 무게를 재어 150g을 계근한 다음 이를 물 300g, 에틸렌글리콜 200g, 규산나트륨 150g, 액상 상태로 분산시킨 게르마늄 120g 및 액상 상태로 분산시킨 은나노 80g에 함께 혼합시키면 본 발명에 의한 킬레이트 용액을 함유하는 자동차용 냉각수 첨가제 조성물이 제조된다.
Weigh 150 g of the prepared chelating solution, weigh it, and then mix it together with 300 g of water, 200 g of ethylene glycol, 150 g of sodium silicate, 120 g of germanium dispersed in a liquid state, and 80 g of silver nano dispersed in a liquid state. An automotive cooling water additive composition is prepared.

상기 제조된 냉각수 첨가제 조성물을 직접 자동차 라디에이터 내부에 투입하여 자동차를 운행하였다. 2007년 현대자동차에서 생산하여 2011년 8월말까지 65400km를 주행한 2000cc 소나타 승용차에 대해 라디에이터에 투입된 냉각수 중 500㎖를 빼내고 본 발명에 의한 첨가제 조성물을 500㎖를 첨가하여 1주일간 운행하면서 테스트해 본 결과 일반 냉각수만을 투입했을 때보다도 연비가 약 10~15% 정도 높아지는 것을 확인할 수 있었으며, 본 발명에 의한 첨가제를 투입 후에 발생되는 추가적인 소음도 확인할 수 없었다. 아울러 1주일간 운행 후에 라디에이터 배관 등을 검사한 결과 전혀 문제가 없었음을 확인할 수 있었다.The car was operated by directly adding the prepared coolant additive composition into a car radiator. The result of the test was performed by discharging 500 ml of the coolant injected into the radiator for a 2000cc Sonata passenger car produced by Hyundai Motor in 2007 and traveling 65400km until the end of August 2011, and driving 500 ml of the additive composition according to the present invention for one week. It was confirmed that the fuel economy is about 10 to 15% higher than when only the normal cooling water is added, and additional noise generated after the addition of the additive according to the present invention could not be confirmed. In addition, as a result of inspecting the radiator piping after the operation for one week, it was confirmed that there was no problem at all.

Claims (3)

물 20~30중량%, 귀양석, 흑운모, 토르말린, 일라이트, 제올라이트, 모데나이트 중 어느 하나 이상의 기능성 광물의 분말을 에틸렌디아민테트라아세트산(EDTA)과 혼합하여 제조된 킬레이트 용액 5~20중량%, 글리콜 10~20중량%, 규산나트륨 10~20중량%, 게르마늄 10~20중량% 및 액상의 은나노 10~20중량%로 조성되는 것을 특징으로 하는 킬레이트 용액을 함유하는 자동차용 냉각수 첨가제 조성물.20 to 30% by weight of water, 5 to 20% by weight of chelating solution prepared by mixing powder of any one or more functional minerals of gemstone, biotite, tourmaline, elite, zeolite and mordenite with ethylenediaminetetraacetic acid (EDTA), Cooling water additive composition for automobile containing a chelate solution, characterized in that the composition is composed of 10 to 20% by weight of glycol, 10 to 20% by weight of sodium silicate, 10 to 20% by weight of germanium and 10 to 20% by weight of liquid silver nano. 제1항에서,
상기 기능성 분말의 크기는 10~20㎚인 것을 특징으로 하는 킬레이트 용액을 함유하는 자동차용 냉각수 첨가제 조성물.In claim 1,
Cooling water additive composition for a vehicle containing a chelate solution, characterized in that the size of the functional powder is 10 ~ 20nm. 제1항에서,
상기 에틸렌디아민테트라아세트산은 나트륨 이온으로 치환되어 있는 Na-EDTA인 것을 특징으로 하는 킬레이트 용액을 함유하는 자동차용 냉각수 첨가제 조성물.


In claim 1,
The ethylenediaminetetraacetic acid is an automotive cooling water additive composition containing a chelate solution, characterized in that Na-EDTA is substituted with sodium ions.


KR1020110093592A 2011-09-16 2011-09-16 Coolant additive with chelate compounds KR20130030070A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015122560A1 (en) * 2014-02-11 2015-08-20 채수장 Automotive cooling water additive and method for preparing same
KR102148209B1 (en) 2019-05-03 2020-08-26 김동완 Cooling water additives for vehicle and manufacturing method thereof
KR102441192B1 (en) * 2022-03-22 2022-09-08 주식회사 션킴모터스 Composition for cooling water additive and manufacturing method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015122560A1 (en) * 2014-02-11 2015-08-20 채수장 Automotive cooling water additive and method for preparing same
KR102148209B1 (en) 2019-05-03 2020-08-26 김동완 Cooling water additives for vehicle and manufacturing method thereof
KR102441192B1 (en) * 2022-03-22 2022-09-08 주식회사 션킴모터스 Composition for cooling water additive and manufacturing method thereof

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