JPS6141955B2 - - Google Patents

Info

Publication number
JPS6141955B2
JPS6141955B2 JP55097567A JP9756780A JPS6141955B2 JP S6141955 B2 JPS6141955 B2 JP S6141955B2 JP 55097567 A JP55097567 A JP 55097567A JP 9756780 A JP9756780 A JP 9756780A JP S6141955 B2 JPS6141955 B2 JP S6141955B2
Authority
JP
Japan
Prior art keywords
gasoline
water
diethanolamine
benzoic acid
weight
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
Application number
JP55097567A
Other languages
Japanese (ja)
Other versions
JPS5724625A (en
Inventor
Hiroyuki Ihara
Yoshio Tobe
Osamu Toyoda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eneos Corp
Original Assignee
Mitsubishi Oil Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Oil Co Ltd filed Critical Mitsubishi Oil Co Ltd
Priority to JP9756780A priority Critical patent/JPS5724625A/en
Publication of JPS5724625A publication Critical patent/JPS5724625A/en
Publication of JPS6141955B2 publication Critical patent/JPS6141955B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
  • Liquid Carbonaceous Fuels (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明はすぐれた防錆性を有するガソリンの水
溶解剤(以下ガソリン水ぬき剤)に関する。 従来乗用車のガソリンタンク底部にたまる水分
をガソリンに溶解させるためイソプロパノールを
主成分とするガソリン水ぬき剤が給油所等で市販
されている。 ガソリンには一般に水分が40〜70ppm溶解し
ており、特に夏期の湿度の高い時にはこの数値を
上回わる場合がある。温度別のガソリンの飽和水
溶解度は、0℃で60ppm、10℃で80ppm、20℃
で110ppm、30℃で150ppm、40℃で200ppm程度
であり、また芳香族系炭化水素の含有量が多いも
のでは水溶解度が高く、少ないものでは低い。従
つて外気温の高い昼間には水分は溶解し易く、夜
間外気温が低くなると水分は溶解し難くなり、場
合によつては水分が分離しタンク底部に沈降分離
する場合がある。 このため、長期の間にタンク底部をいためさら
に腐食が進むとガソリンを漏洩せしめたり、ある
いは錆のかけらが燃料供給システムおよびキヤブ
レターを閉そくせしめたりする場合がある。この
ためガソリン水ぬき剤と称して一般にイソプロパ
ノールを主成分とするものが市販されており、こ
れをガソリンに対して0.5〜2.0容量%添加する
と、水分の溶解度がもとのガソリンの1.4〜5倍
に上昇し、分離水分を溶解せしめることができ
る。しかるに既に水分が多量、例えば100ml程度
沈降分離しており、前述の溶解操作が十分にゆか
なかつた場合には次のような弊害が起こる。すな
わち実施例の項でも示すごとく、イソプロパノー
ルは水と相溶しガソリン底部に分離すると乗用車
のガソリンタンクのハンダメツキ鋼材(以下ター
ンシート)の腐食を促進する作用があり、耐水用
のハンダメツキを腐食した後さらに鋼材(鉄)を
も錆させ、問題があることが判明した。また従来
の市販品はいずれも防錆剤が使用されているもの
はなく、実施例の項で示すごとく軟鋼板にて防錆
テストを行つた結果でもすべて発錆した。 以上のような状況にかんがみ本発明者らは種々
検討した結果、炭素数1〜3からなる1価アルコ
ール100重量部と安息香酸とジエタノールアミン
の塩0.2〜2.0重量部とからなる防錆性にすぐれた
ガソリン水ぬき剤を発明するに至つた。 すなわち本発明者らはガソリン水ぬき剤の防錆
剤に関し、添加量が微量で防錆力がすぐれかつガ
ソリンに添加した際ガソリンのJIS規格であるガ
ム質や酸化安定性に悪影響のない防錆剤について
検討を行なつた。一般に燃料油もしくは潤滑油等
の油類に使用されている防錆剤はアミン系あるい
はソルビタン系等の油溶性のものであるが、本発
明に使用する防錆剤の安息香酸とジエタノールア
ミンの塩は極性が強く水溶性であり、アルコール
との共存下でガソリンにも溶解するが存在する場
合優先的に水の方に溶解しこの水の腐食性をなく
す特徴がある。さらにガソリンタンク材であるタ
ーンシートに対し、またガソリンのJIS規格であ
るガム質や酸化安定性について悪影響がない等、
他の防錆剤に見られない特徴を有しており、安息
香酸とジエタノールアミンの塩を炭素数1〜3か
らなる1価アルコールに添加したガソリン水ぬき
剤は水分が多量に分離しているガソリンにもすぐ
れた防錆性を示すことを見出した。 なお安息香酸とジエタノールアミンの塩のアル
コール100重量部に対する添加量は0.2重量部未満
では実施例の項にも示すごとく防錆性がなく、ま
た2.0重量部を超えると経済性の点で問題があ
る。 また1価アルコールの水溶解性はエタノール、
イソプロパノール、正―プロパノール、メタノー
ル及び炭素数4以上のアルコールの順で低くな
り、エタノールまたはエタノールを主成分とした
ガソリン水ぬき剤が水溶解性の点では最もすぐれ
ている。 以上述べたように炭素数1〜3からなる1価ア
ルコール好ましくはエタノール100重量部と安息
香酸とジエタノールアミンの塩0.2〜2.0重量部と
からなるガソリン水ぬき剤は従来品よりも水溶解
性のみならず防錆性にすぐれた性能を有するガソ
リン水ぬき剤である。 なお本発明のガソリン水ぬき剤はメタノールお
よびエタノールをガソリンに混合したアルコール
混合ガソリンにも有効に適用することができる。 次に実施例により本発明を具体的に示すが、本
発明はその要旨を越えない限り以下の実施例に限
定されるものではない。 (実施例 1) 予め80℃で2時間撹拌を行いながら、1モルの
安息香酸と1モルのジエタノールアミンを反応せ
しめて得られた安息香酸とジエタノールアミンの
塩から1gを分取し、これをエタノール67gとイ
ソプロパノール33gの混合液に溶解させて、ガソ
リン水ぬき剤Aを製造した。該ガソリン水ぬき剤
Aをガソリン100mlに対して0.5ml添加し軽く振と
うした後、さらに水を0.5ml添加して再び軽く振
とうし、300mlのビーカーに移し変えてこれに軟
鋼板およびターンシートの試験片を浸漬して1
日、1週間および2ケ月後の状態を観察した。ま
たこれらを混合してガソリンのガム質
(JISK2261―1980)および酸化安定性のテストも
実施した。これらの実験の結果を第1表に示す。 (実施例 2) エタノール100gに対して、安息香酸とジエタ
ノールアミンの塩をそれぞれ0.2、0.5、1.0および
2.0g溶解し、ガソリン水ぬき剤B、C、D、E
を製造し、これらを用いて実施例1と同様のテス
トを実施した。結果を第1表に示す。 (実施例 3) メタノール60gおよびエタノール40gの混合液
に対して、安息香酸とジエタノールアミンの塩を
1.0および2.0g溶解し、ガソリン水ぬき剤F、G
を製造しこれらを用いて実施例1と同様のテスト
を実施した。結果を第1表に示す。 (比較例 1) メタノール100gに対してオクチル酸とジシク
ロヘキシルアミンの塩を1.0および2.0g溶解し、
ガソリン水ぬき剤X―およびX―2を製造し、同
様にメタノール100gに対してジシクロヘキシル
アミンナイトレートを1.0および2.0g溶解し、ガ
ソリン水ぬき剤X―3およびX―4をつくり、ま
たさらにエタノール100gに対して安息香酸とジ
エタノールアミンの塩を0.1g溶解しガソリン水
ぬき剤X―5をつくり実施例1と同様のテストを
実施した。結果を第1表に示す。 (比較例 2) 比較のため市販のガソリン水ぬき剤6種(Y―
1〜Y―6)を入手し、それぞれについて実施例
1と同様のテストを実施した。これらの結果を第
1表に示す。 第1表の結果より、本発明のガソリン水ぬき
剤、A〜Gは軟鋼板に対する防錆性およびターン
シートに対する腐食防止性ならびに水溶解性の点
で他社品および比較品にくらべ著しくすぐれてい
ることが分かる。
The present invention relates to a gasoline water dissolving agent (hereinafter referred to as a gasoline water removing agent) having excellent rust prevention properties. Conventionally, gasoline water removers containing isopropanol as a main ingredient are commercially available at gas service stations and the like in order to dissolve moisture that accumulates at the bottom of gasoline tanks in passenger cars into gasoline. Gasoline generally has 40 to 70 ppm of water dissolved in it, and this value can sometimes be exceeded, especially in the humid summer months. The saturated water solubility of gasoline at different temperatures is 60ppm at 0℃, 80ppm at 10℃, and 20℃.
The water solubility is 110ppm at 30℃, 150ppm at 30℃, and 200ppm at 40℃.Also, those with a high aromatic hydrocarbon content have high water solubility, and those with a low content have low water solubility. Therefore, water is easily dissolved during the day when the outside temperature is high, and becomes difficult to dissolve when the outside temperature is low at night, and in some cases, the water may separate and settle at the bottom of the tank. As a result, if the bottom of the tank is damaged over a long period of time and corrosion progresses, gasoline may leak, or rust particles may block the fuel supply system and carburetor. For this reason, gasoline water removers, which generally have isopropanol as the main component, are commercially available, and when this is added at 0.5 to 2.0% by volume to gasoline, the water solubility is 1.4 to 5 times that of the original gasoline. It can rise to 100% and dissolve the separated water. However, if a large amount of water, for example about 100 ml, has already settled and separated, and the above-mentioned dissolution operation cannot be carried out sufficiently, the following problems will occur. In other words, as shown in the Examples section, isopropanol is compatible with water and when separated at the bottom of the gasoline, it has the effect of accelerating the corrosion of the solder-plated steel material (hereinafter referred to as turn sheet) of the gasoline tank of a passenger car. It was also discovered that there was a problem in that it caused steel (iron) to rust. In addition, none of the conventional commercially available products contain rust preventive agents, and as shown in the Examples section, all rust occurred even when a rust prevention test was conducted on mild steel plates. In view of the above circumstances, the inventors of the present invention have conducted various studies and found that a product with excellent rust prevention properties is made of 100 parts by weight of a monohydric alcohol having 1 to 3 carbon atoms and 0.2 to 2.0 parts by weight of a salt of benzoic acid and diethanolamine. This led to the invention of a gasoline water remover. In other words, the present inventors have developed a rust preventive agent for gasoline water remover that has excellent rust preventive power with only a small amount added, and that does not have any negative effect on the gum quality or oxidation stability of gasoline, which is the JIS standard for gasoline, when added to gasoline. We investigated agents. Generally, rust inhibitors used in oils such as fuel oil or lubricating oil are amine-based or sorbitan-based oil-soluble ones, but the rust inhibitor used in the present invention is a salt of benzoic acid and diethanolamine. It is highly polar and water-soluble, and will dissolve in gasoline in the coexistence of alcohol, but when present, it preferentially dissolves in water, eliminating the corrosive nature of this water. In addition, there is no negative effect on the turn sheet, which is the material for gasoline tanks, and on the gum quality and oxidation stability, which are the JIS standards for gasoline.
It has characteristics not seen in other rust preventives, and is a gasoline water remover made by adding salts of benzoic acid and diethanolamine to a monohydric alcohol consisting of 1 to 3 carbon atoms. It has also been found that it exhibits excellent rust prevention properties. Note that if the amount of salt of benzoic acid and diethanolamine added to 100 parts by weight of alcohol is less than 0.2 parts by weight, there will be no rust prevention as shown in the Examples section, and if it exceeds 2.0 parts by weight, there will be problems in terms of economy. . Also, the water solubility of monohydric alcohols is ethanol,
Isopropanol, normal propanol, methanol, and alcohols having 4 or more carbon atoms are the lowest in order, and ethanol or a gasoline water remover based on ethanol is the best in terms of water solubility. As mentioned above, a gasoline water remover consisting of a monohydric alcohol having 1 to 3 carbon atoms, preferably 100 parts by weight of ethanol, and 0.2 to 2.0 parts by weight of a salt of benzoic acid and diethanolamine is more water-soluble than conventional products. It is a gasoline water remover with excellent rust prevention performance. The gasoline water remover of the present invention can also be effectively applied to alcohol-mixed gasoline, which is a mixture of methanol and ethanol with gasoline. EXAMPLES Next, the present invention will be specifically illustrated by examples, but the present invention is not limited to the following examples unless it exceeds the gist thereof. (Example 1) 1 g of the salt of benzoic acid and diethanolamine obtained by reacting 1 mole of benzoic acid with 1 mole of diethanolamine was preliminarily stirred at 80°C for 2 hours, and this was added to 67 g of ethanol. Gasoline water remover A was prepared by dissolving it in a mixed solution of 33 g of isopropanol and 33 g of isopropanol. Add 0.5 ml of the gasoline water remover A to 100 ml of gasoline, shake lightly, add 0.5 ml of water, shake lightly again, transfer to a 300 ml beaker, and add a mild steel plate and turn sheet to this. 1 by soaking the test piece in
The condition was observed after 1 day, 1 week and 2 months. These were also mixed to test the gum quality (JISK2261-1980) and oxidation stability of gasoline. The results of these experiments are shown in Table 1. (Example 2) To 100 g of ethanol, benzoic acid and diethanolamine salts were added at 0.2, 0.5, 1.0 and 1.0, respectively.
2.0g dissolved, gasoline water remover B, C, D, E
were manufactured, and the same tests as in Example 1 were conducted using these. The results are shown in Table 1. (Example 3) A salt of benzoic acid and diethanolamine was added to a mixture of 60 g of methanol and 40 g of ethanol.
1.0 and 2.0g dissolved, gasoline water remover F, G
were manufactured and the same tests as in Example 1 were conducted using these. The results are shown in Table 1. (Comparative Example 1) Dissolve 1.0 and 2.0 g of octylic acid and dicyclohexylamine salts in 100 g of methanol,
Gasoline water removers X- and X-2 were manufactured, and 1.0 and 2.0 g of dicyclohexylamine nitrate were similarly dissolved in 100 g of methanol to create gasoline water removers X-3 and X-4. Gasoline water remover X-5 was prepared by dissolving 0.1 g of a salt of benzoic acid and diethanolamine per 100 g, and the same test as in Example 1 was conducted. The results are shown in Table 1. (Comparative Example 2) For comparison, six types of commercially available gasoline water removers (Y-
1 to Y-6) were obtained, and the same tests as in Example 1 were conducted on each. These results are shown in Table 1. From the results in Table 1, the gasoline water removers A to G of the present invention are significantly superior to other companies' products and comparative products in terms of rust prevention properties for mild steel plates, corrosion prevention properties for turn sheets, and water solubility. I understand that.

【表】【table】

【表】【table】

Claims (1)

【特許請求の範囲】[Claims] 1 炭素数1〜3からなる1価アルコールを主成
分としてガソリンの水溶解剤において、アルコー
ル100重量部と安息香酸とジエタノールアミンの
塩0.2〜2.0重量部とからなる防錆性にすぐれたガ
ソリンの水溶解剤。
1. A gasoline water solubilizer mainly composed of a monohydric alcohol having 1 to 3 carbon atoms, which has excellent rust prevention properties and consists of 100 parts by weight of alcohol and 0.2 to 2.0 parts by weight of a salt of benzoic acid and diethanolamine. solubilizer.
JP9756780A 1980-07-18 1980-07-18 Water dissolving agent for gasoline Granted JPS5724625A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9756780A JPS5724625A (en) 1980-07-18 1980-07-18 Water dissolving agent for gasoline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9756780A JPS5724625A (en) 1980-07-18 1980-07-18 Water dissolving agent for gasoline

Publications (2)

Publication Number Publication Date
JPS5724625A JPS5724625A (en) 1982-02-09
JPS6141955B2 true JPS6141955B2 (en) 1986-09-18

Family

ID=14195803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9756780A Granted JPS5724625A (en) 1980-07-18 1980-07-18 Water dissolving agent for gasoline

Country Status (1)

Country Link
JP (1) JPS5724625A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63185961U (en) * 1987-05-22 1988-11-29

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4564256B2 (en) * 2003-12-18 2010-10-20 株式会社ブイエスディー Hydrous petroleum fuel and method for producing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63185961U (en) * 1987-05-22 1988-11-29

Also Published As

Publication number Publication date
JPS5724625A (en) 1982-02-09

Similar Documents

Publication Publication Date Title
US2684292A (en) Fuel oil composition
US2736658A (en) Method of protecting metal surfaces from corrosion and corrosion inhibitor compositions
US2626207A (en) Fuel oil composition
US2776870A (en) Corrosion prevention in gas recovery systems
US3248187A (en) Alkenyl dicarboxylic acid lactones, their method of preparation and utility
EP1092788B1 (en) Corrosion inhibiting compositions
JPH07145491A (en) Water-soluble anti-corrosive agent for metal
US4565547A (en) Detergent composition for fuel-system parts
DE69921281T2 (en) Fuels with increased lubricating properties
US3251664A (en) Fuel compositions containing branched polyalkylenepolyamines and derivatives thereof
KR100751645B1 (en) Improved fuel additive formulation and method of using same
JP2626814B2 (en) Corrosion inhibiting compositions in fuel systems and methods of using and manufacturing the same
US3197510A (en) N1-secondary-alkyl-aminoalkyl alkanolamines
CN108699464B (en) Method for reducing iron corrosion
US2861874A (en) Corrosion inhibitor for light petroleum solvents and fuels
US4224170A (en) Rust inhibiting additive compositions for oils
JPS6141955B2 (en)
JPH06184771A (en) Rust inhibitor
US3305483A (en) Stabilized organic compositions
JP2001271077A (en) Diesel gas oil composition
US4683081A (en) Aqueous corrosion inhibitor compositions of a half-amide and a dicarboxylic acid amine salt
US3086870A (en) Coating composition and method
JPS6067596A (en) Additive for lubricating agent for use together with alcohol fuel
RU2411306C1 (en) Corrosion inhibitor for oil field equipment and oil and gas pipelines
US3228884A (en) Method for producing a corrosion inhibited antifreeze composition