JP4063348B2 - Cleaning agent for resin - Google Patents

Cleaning agent for resin Download PDF

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Publication number
JP4063348B2
JP4063348B2 JP12544896A JP12544896A JP4063348B2 JP 4063348 B2 JP4063348 B2 JP 4063348B2 JP 12544896 A JP12544896 A JP 12544896A JP 12544896 A JP12544896 A JP 12544896A JP 4063348 B2 JP4063348 B2 JP 4063348B2
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JP
Japan
Prior art keywords
cleaning agent
resin
weight
minutes
methylbutanol
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 - Lifetime
Application number
JP12544896A
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Japanese (ja)
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JPH09310093A (en
Inventor
泉 山下
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.)
Asahi Kasei Chemicals Corp
Original Assignee
Asahi Kasei Chemicals Corp
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 Asahi Kasei Chemicals Corp filed Critical Asahi Kasei Chemicals Corp
Priority to JP12544896A priority Critical patent/JP4063348B2/en
Publication of JPH09310093A publication Critical patent/JPH09310093A/en
Application granted granted Critical
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Description

【0001】
【発明の属する技術分野】
本発明は、樹脂吐出装置のミキシング部およびノズル部を洗浄するのに好適な洗浄剤に関するものである。
【0002】
【従来の技術】
近年、各種電気・電子部品、医療器部品、自動車部品等をエポキシ、ウレタン、シリコーン、ポリエステル等の樹脂で接合、充填、または封止する目的で樹脂吐出装置が広く活用されている。この用途に用いられる樹脂には常温付近で架橋・硬化する2液タイプのものも多く使われており、2液を自動的に比率計量、混合撹拌し連続的に吐出できるようになっている。しかし、2液タイプの樹脂を使用する場合、昼休みや一日の作業終了時等作業を中断する前に、吐出装置内での樹脂の硬化を防止するためにミキシング部やノズル部を洗浄する必要がある。
【0003】
これらの洗浄には、不燃性で毒性が低く、優れた溶解性を示す等、多くの特徴を有することから、1,1,1−トリクロロエタンが広く使われてきた。
しかし、このものは洗浄剤として極めて優れたものであるが、成層圏のオゾン層を破壊することが明らかになったため、全廃することが国際的に取り決められた。また、塩化メチレン等全廃の対象になっていないハロゲン系溶剤もあるが、これらも発癌性その他環境汚染問題から敬遠される状況にある。
【0004】
かかる状況下において、安全で環境への影響の少ない非ハロゲン系の代替洗浄剤への期待が高まっているが、すべての要求性能を満たすものは未だ得られていないのが現状である。例えば、アセトンは洗浄力は優れているものの引火点が低く、ヒーター等着火源の多い樹脂吐出装置の洗浄に使用するのは危険である。また、アジピン酸、こはく酸および/またはグルタル酸のジメチメエステルも一部で使用されているが、これらは引火点は100℃前後と高いものの、一部のエポキシ系の樹脂に対して洗浄力が決定的に不足する。
【0005】
【発明が解決しようとする課題】
本発明は、広範囲の樹脂に対して洗浄力が優れ、かつ、引火の危険性が低く、環境への影響の少ない非ハロゲン系の樹脂用洗浄剤を提供するものである。
【0006】
【課題を解決するための手段】
本発明者は、上記課題を解決するため鋭意検討を重ねた結果、アジピン酸、こはく酸またはグルタル酸のジアルキルエステルに適当量の脂肪族アルコール系化合物を添加することにより、広範囲のエポキシ樹脂の洗浄力が極めて優れた洗浄剤が得られることを見出し、本発明をなすに至った。
【0007】
すなわち、本発明は、次の(a)成分および(b)成分のみからなる樹脂吐出装置用洗浄剤に関するものである。
(a)アジピン酸、こはく酸およびグルタル酸のジメチルエステルの混合物、10〜90重量%。
(b)3−メトキシ−3−メチルブタノール、ジプロピレングリコールモノメチルエーテル、ジエチレングリコールモノブチルエーテルから選ばれた少なくとも1種、10〜90重量%。
【0009】
以下、本発明を詳細に説明する。
本発明で用いられるアジピン酸、こはく酸またはグルタル酸のジアルキルエステルは、単独または混合物として使用できる。アルキル基としては、炭素数1〜4のもの、すなわち、メチル、エチル、ノルマルプロピル、イソプロピル、ノルマルブチル、イソブチル等が好適である。
【0011】
これら(b)成分の3−メトキシ−3−メチルブタノール、ジプロピレングリコールモノメチルエーテル、ジエチレングリコールモノブチルエーテルは単独または組み合わせて添加することができ、エポキシ樹脂溶解後に経時的に不溶物が発生するのを防止する効果があるが、添加量が多すぎると却ってエポキシ樹脂を溶解するのに長時間を要するようになるため、その添加量は10〜90重量%の範囲であることが好ましい。
【0012】
本発明の洗浄剤は、樹脂の洗浄に有用で、特に、樹脂吐出装置用の洗浄剤として好適である。
【0013】
【発明の実施の形態】
以下、実施例により本発明を具体的に説明するが、本発明はこれらの実施例に限定されるものではない。
【0014】
【実施例1】
長瀬チバ株式会社製の2液性エポキシ樹脂XNR3114(主剤)1.0gとXNH3114(硬化剤)0.25gをよく混ぜ合わせ、10分間放置した後、アジピン酸、こはく酸およびグルタル酸のジメチルエステルの混合物(商品名:DBE、デュポン社製、以下、単にDBEと記す)50重量%、3−メトキシ−3−メチルブタノール50重量%よりなる洗浄剤10mlを加えて振盪(180回/分)したところ、5分で完全に溶解し、1夜放置しても沈殿物等は生成しなかった。
【0015】
【実施例2】
3−メトキシ−3−メチルブタノールをジプロピレングリコールモノメチルエーテルとした以外は実施例1と同様の操作を行なったところ、4分で完全に溶解し、1夜放置しても沈殿物等は生成しなかった。
【0016】
【実施例3】
3−メトキシ−3−メチルブタノールをジエチレングリコールモノブチルエーテルとした以外は実施例1と同様の操作を行なったところ、6分で完全に溶解し、1夜放置しても沈殿物等は生成しなかった。
【0017】
【実施例4】
2液性エポキシ樹脂を日本ペルノックス社製のMG151(主剤)1.0gとHY306(硬化剤)0.5gとした以外は実施例1と同様の操作を行なったところ、4分で完全に溶解し、1夜放置しても沈殿物等は生成しなかった。
【0018】
【比較例1】
洗浄剤をDBEに変えて実施例1と同様の操作を行なったところ、エポキシ樹脂は5分でほぼ溶解はしたが、白濁しており、放置すると沈殿が生成した。この沈殿は時間とともに徐々に増加した。
【0019】
【比較例2】
洗浄剤を3−メトキシ−3−メチルブタノールに変えて実施例1と同様の操作を行なったところ、エポキシ樹脂が完全に溶解するのに12分を要した。
【0020】
【比較例3】
洗浄剤をジプロピレングリコールモノメチルエーテルに変え実施例1と同様の操作を行なったところ、エポキシ樹脂が完全に溶解するのに10分を要した。
【0021】
【比較例4】
洗浄剤をDBEに変えて実施例4と同様の操作を行なったところ、エポキシ樹脂は5分で一旦完全に溶解したが、その直後から粘着性の沈殿物が生成し始め、器壁に付着した。
【0022】
【発明の効果】
本発明の洗浄剤は、各種電気・電子部品、医療器部品、自動車部品等を接合、充填、または封止するために使用されるエポキシ、ウレタン、シリコーン、ポリエステル等の幅広い樹脂を洗浄することができ、特に、樹脂吐出装置用の洗浄剤として画期的なものである。しかも、ハロゲン原子を含まないのでオゾン層破壊の恐れが全くなく、環境への影響も少なく、引火点が高いため、1,1,1−トリクロロエタンや塩化メチレンの代替洗浄剤として極めて有用である。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cleaning agent suitable for cleaning a mixing portion and a nozzle portion of a resin discharge device.
[0002]
[Prior art]
In recent years, resin discharge devices have been widely used for the purpose of joining, filling, or sealing various electric / electronic parts, medical device parts, automobile parts, and the like with resins such as epoxy, urethane, silicone, and polyester. As the resin used in this application, a two-component type that crosslinks and cures at around room temperature is often used, and the two components can be automatically ratio-measured, mixed and stirred, and continuously discharged. However, when using a two-component resin, it is necessary to clean the mixing part and nozzle part to prevent the resin from hardening in the discharge device before interrupting work such as at lunch break or at the end of a day's work. There is.
[0003]
For these cleanings, 1,1,1-trichloroethane has been widely used because it has many characteristics such as nonflammability, low toxicity and excellent solubility.
However, it is an excellent cleaning agent, but it was found that it would destroy the ozone layer in the stratosphere. In addition, some halogen solvents such as methylene chloride, which are not subject to total abolition, are also being avoided from carcinogenicity and other environmental pollution problems.
[0004]
Under such circumstances, there is an increasing expectation for a non-halogen-based alternative cleaning agent that is safe and has little impact on the environment, but the present situation is that a product that satisfies all the required performances has not yet been obtained. For example, acetone has an excellent detergency, but has a low flash point, and is dangerous to use for washing resin discharge devices having many ignition sources such as heaters. Adipic acid, succinic acid and / or dimethyme ester of glutaric acid are also used in some cases, but these have a high flash point of around 100 ° C, but they have a detergency against some epoxy resins. Is a critical shortage.
[0005]
[Problems to be solved by the invention]
The present invention provides a non-halogen resin cleaning agent that has excellent detergency over a wide range of resins, has a low risk of ignition, and has little environmental impact.
[0006]
[Means for Solving the Problems]
As a result of intensive studies in order to solve the above problems, the present inventor washed a wide range of epoxy resins by adding an appropriate amount of an aliphatic alcohol compound to a dialkyl ester of adipic acid, succinic acid or glutaric acid. The inventors have found that a cleaning agent having an extremely high strength can be obtained, and have reached the present invention.
[0007]
That is, the present invention relates to a cleaning agent for a resin discharge device comprising only the following components (a) and (b).
(A) A mixture of adipic acid, succinic acid and dimethyl ester of glutaric acid, 10 to 90% by weight.
(B) At least one selected from 3-methoxy-3-methylbutanol, dipropylene glycol monomethyl ether and diethylene glycol monobutyl ether , 10 to 90 % by weight.
[0009]
Hereinafter, the present invention will be described in detail.
The dialkyl esters of adipic acid, succinic acid or glutaric acid used in the present invention can be used alone or as a mixture. As the alkyl group, those having 1 to 4 carbon atoms, that is, methyl, ethyl, normal propyl, isopropyl, normal butyl, isobutyl and the like are preferable.
[0011]
These components (b), 3-methoxy-3-methylbutanol, dipropylene glycol monomethyl ether and diethylene glycol monobutyl ether, can be added singly or in combination to prevent the generation of insoluble matter over time after dissolution of the epoxy resin. However, since it takes a long time to dissolve the epoxy resin when the addition amount is too large, the addition amount is preferably in the range of 10 to 90% by weight.
[0012]
The cleaning agent of the present invention is useful for cleaning a resin, and is particularly suitable as a cleaning agent for a resin discharge device.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
EXAMPLES Hereinafter, although an Example demonstrates this invention concretely, this invention is not limited to these Examples.
[0014]
[Example 1]
Two-part epoxy resin XNR3114 (main agent) manufactured by Nagase Chiba Co., Ltd. (1.0 g) and XNH3114 (curing agent) (0.25 g) were mixed well and left for 10 minutes. A mixture (trade name: DBE, manufactured by DuPont, hereinafter simply referred to as DBE) 50% by weight and 10 ml of 3-methoxy-3-methylbutanol 50% by weight of detergent and shaken (180 times / min) It completely dissolved in 5 minutes, and no precipitates were formed even after being left overnight.
[0015]
[Example 2]
Except that 3-methoxy-3-methylbutanol was changed to dipropylene glycol monomethyl ether, the same operation as in Example 1 was performed. The solution was completely dissolved in 4 minutes, and a precipitate and the like were formed even after being left overnight. There wasn't.
[0016]
[Example 3]
Except that 3-methoxy-3-methylbutanol was changed to diethylene glycol monobutyl ether, the same operation as in Example 1 was performed. However, the solution was completely dissolved in 6 minutes, and no precipitate was formed even after being left overnight. .
[0017]
[Example 4]
The same operation as in Example 1 was performed except that 1.0 g of MG151 (main agent) and 0.5 g of HY306 (curing agent) manufactured by Nippon Pernox Co. were used as the two-component epoxy resin, and completely dissolved in 4 minutes. Precipitates and the like were not formed even after being left overnight.
[0018]
[Comparative Example 1]
When the cleaning agent was changed to DBE and the same operation as in Example 1 was performed, the epoxy resin was almost dissolved in 5 minutes, but it was cloudy and a precipitate was formed when left to stand. This precipitation gradually increased with time.
[0019]
[Comparative Example 2]
When the cleaning agent was changed to 3-methoxy-3-methylbutanol and the same operation as in Example 1 was performed, it took 12 minutes for the epoxy resin to completely dissolve.
[0020]
[Comparative Example 3]
When the cleaning agent was changed to dipropylene glycol monomethyl ether and the same operation as in Example 1 was performed, it took 10 minutes for the epoxy resin to completely dissolve.
[0021]
[Comparative Example 4]
When the cleaning agent was changed to DBE and the same operation as in Example 4 was performed, the epoxy resin was once completely dissolved in 5 minutes, but immediately after that, a sticky precipitate started to form and adhered to the vessel wall. .
[0022]
【The invention's effect】
The cleaning agent of the present invention can clean a wide range of resins such as epoxy, urethane, silicone, and polyester used to join, fill, or seal various electrical / electronic parts, medical device parts, automobile parts, etc. In particular, it is a revolutionary cleaning agent for resin discharge devices. In addition, since it does not contain halogen atoms, there is no fear of ozone layer destruction, there is little influence on the environment, and the flash point is high, so it is extremely useful as an alternative cleaning agent for 1,1,1-trichloroethane and methylene chloride.

Claims (1)

次の(a)成分および(b)成分のみからなる樹脂吐出装置用洗浄剤。
(a)アジピン酸、こはく酸およびグルタル酸のジメチルエステルの混合物、10〜90重量%。
(b)3−メトキシ−3−メチルブタノール、ジプロピレングリコールモノメチルエーテル、ジエチレングリコールモノブチルエーテルから選ばれた少なくとも1種、10〜90重量%。
A cleaning agent for a resin discharge device comprising only the following components (a) and (b):
(A) A mixture of adipic acid, succinic acid and dimethyl ester of glutaric acid, 10 to 90% by weight.
(B) At least one selected from 3-methoxy-3-methylbutanol, dipropylene glycol monomethyl ether and diethylene glycol monobutyl ether , 10 to 90 % by weight.
JP12544896A 1996-05-21 1996-05-21 Cleaning agent for resin Expired - Lifetime JP4063348B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12544896A JP4063348B2 (en) 1996-05-21 1996-05-21 Cleaning agent for resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12544896A JP4063348B2 (en) 1996-05-21 1996-05-21 Cleaning agent for resin

Publications (2)

Publication Number Publication Date
JPH09310093A JPH09310093A (en) 1997-12-02
JP4063348B2 true JP4063348B2 (en) 2008-03-19

Family

ID=14910342

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12544896A Expired - Lifetime JP4063348B2 (en) 1996-05-21 1996-05-21 Cleaning agent for resin

Country Status (1)

Country Link
JP (1) JP4063348B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5382922B2 (en) * 2009-04-20 2014-01-08 旭化成ケミカルズ株式会社 Cleaning method for sealant discharge parts

Also Published As

Publication number Publication date
JPH09310093A (en) 1997-12-02

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