JP3582886B2 - Cleaning agent for optical parts - Google Patents
Cleaning agent for optical parts Download PDFInfo
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- JP3582886B2 JP3582886B2 JP08354495A JP8354495A JP3582886B2 JP 3582886 B2 JP3582886 B2 JP 3582886B2 JP 08354495 A JP08354495 A JP 08354495A JP 8354495 A JP8354495 A JP 8354495A JP 3582886 B2 JP3582886 B2 JP 3582886B2
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- JP
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- Prior art keywords
- naphthalene
- cleaning agent
- compound
- group
- optical
- 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
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Description
【0001】
【産業上の利用分野】
本発明は、光学部品用洗浄剤、特には、光学レンズや光学プリズム等の光学部品を研磨、加工する際に、仮固定あるいは表面を保護するために用いたアスファルトピッチ、樹脂やワックス類を研磨、加工後に、洗浄、除去するための光学部品用洗浄剤に関する。
【0002】
【従来の技術】
従来、光学部品用洗浄剤としては、例えばパークロルエチレン、トリクロロエチレン、塩化メチレンなどの塩素系洗浄剤が用いられていた。このような光学部品用洗浄剤は、オゾン層破壊等の環境問題や毒性を有するために、代替品の開発が切望されていた。代替洗浄剤のうち低沸点の芳香族溶剤は、臭気が強く、引火点が低いなどの欠点を有しており、一方、高沸点の芳香族溶剤は、臭気は非常に弱く、引火点も高いが、常温での動粘度が高いために汚れが拡散しにくく、加熱下に使用しなければならないという問題があり、また脂肪族溶剤は、強固に付着した汚れは、ほとんど除去できず、満足できる代替の光学部品用洗浄剤はいまだなかった。
【0003】
【発明が解決しようとする課題】
本発明は、上記課題を解決するもので、本発明の目的は、塩素系化合物を含まず、研磨、加工する際に表面に付着したアスファルトピッチ、樹脂やワックス類等を洗浄、除去するための洗浄力の優れた光学部品用洗浄剤を提供することにある。
【0004】
【課題を解決するための手段】
上記目的を達成するための手段としての本発明は、沸点範囲150〜450℃であって、主成分が下記一般式(I)
【化2】
(式中、R1はメチル基、エチル基、プロピル基またはブチル基、R2はプロピル基またはブチル基、mは1〜3、nは1〜3で、置換基の位置は問わない)で表される少なくとも1種のアルキルナフタレン化合物と、脂肪族化合物、好ましくはノルマルパラフィンとを3:7〜7:3の重量比割合で混合した溶剤を主成分とすることからなるものである。
【0005】
上記アルキルナフタレン化合物は、アスファルトピッチ、樹脂やワックス類に対する溶解力は高い。しかしながら、浸透力が弱いため、光学部品からアスファルトピッチ等を剥がす能力は小さく、このアルキルナフタレン化合物のみでは、洗浄スピードが遅い。なお、このアルキルナフタレン化合物は、アスファルトピッチ等の溶解力が高く、しかも臭気が非常に弱い。
【0006】
上記式(I)のアルキルナフタレン化合物、すなわちナフタレン環に1〜3個のメチル基、エチル基、プロピル基またはブチル基が付加したものに、1〜3個のプロピル基またはブチル基が付加したものであるが、これらの化合物としては、メチルプロピルナフタレン、ジメチルプロピルナフタレン、トリメチルプロピルナフタレン、メチルジプロピルナフタレン、ジメチルジプロピルナフタレン、トリメチルジプロピルナフタレン、メチルトリプロピルナフタレン、ジメチルトリプロピルナフタレン、トリメチルトリプロピルナフタレン、エチルプロピルナフタレン、ジエチルプロピルナフタレン、トリエチルプロピルナフタレン、エチルジプロピルナフタレン、ジエチルジプロピルナフタレン、トリエチルジプロピルナフタレン、エチルトリプロピルナフタレン、ジエチルトリプロピルナフタレン、トリエチルトリプロピルナフタレン、ジプロピルナフタレン、トリプロピルナフタレン、テトラプロピルナフタレン、ペンタプロピルナフタレン、ヘキサプロピルナフタレン、プロピルブチルナフタレン、ジプロピルブチルナフタレン、トリプロピルブチルナフタレン、プロピルジブチルナフタレン、ジプロピルジブチルナフタレン、トリプロピルジブチルナフタレン、プロピルトリブチルナフタレン、ジプロピルトリブチルナフタレン、トリプロピルトリブチルナフタレン、ジブチルナフタレン、トリブチルナフタレン、テトラブチルナフタレン、ペンタブチルナフタレン、ヘキサブチルナフタレン、メチルエチルプロピルナフタレン、ジメチルエチルプロピルナフタレン、メチルジエチルプロピルナフタレン、メチルエチルジプロピルナフタレン、ジメチルエチルジプロピルナフタレン、メチルジエチルジプロピルナフタレン、メチルエチルトリプロピルナフタレン、ジメチルエチルトリプロピルナフタレン、メチルジエチルトリプロピルナフタレン、メチルエチルブチルナフタレン、ジメチルエチルブチルナフタレン、メチルジエチルブチルナフタレン、メチルエチルジブチルナフタレン、ジメチルエチルジブチルナフタレン、メチルジエチルジブチルナフタレン、メチルエチルトリブチルナフタレン、ジメチルエチルトリブチルナフタレン、メチルジエチルトリブチルナフタレン、メチルプロピルブチルナフタレン、ジメチルプロピルブチルナフタレン、メチルジプロピルブチルナフタレン、メチルプロピルジブチルナフタレン、ジメチルプロピルジブチルナフタレン、メチルジプロピルジブチルナフタレン、メチルプロピルトリブチルナフタレン、ジメチルプロピルトリブチルナフタレン、メチルジプロピルトリブチルナフタレン、エチルプロピルブチルナフタレン、ジエチルプロピルブチルナフタレン、エチルジプロピルブチルナフタレン、エチルプロピルジブチルナフタレン、ジエチルプロピルジブチルナフタレン、エチルジプロピルジブチルナフタレン、エチルプロピルトリブチルナフタレン、ジエチルプロピルトリブチルナフタレン、エチルジプロピルトリブチルナフタレン等が挙げられ、これらの化合物において、メチル基、エチル基、プロピル基、ブチル基は、ナフタレン環上のどの位置に付加していてもよい。またこれらのアルキルナフタレン化合物は、単独であっても、2種以上が混合したものであってもよい。
【0007】
なお、このアルキルナフタレン化合物には、上記化合物以外にも、他の有機化合物、例えば、ベンゼン、ナフタレン、インダン、インデン、ビフェニルあるいはこれらの環にアルキル基等が付加した化合物が混合していても特に支障とはならない。しかし、本発明の顕著な効果のためには上記沸点範囲150〜450℃のアルキルナフタレン化合物が50重量%以上、好ましくは70重量%以上、特に好ましくは90重量%以上含まれているものがよい。
【0008】
本発明にいうアルキルナフタレン化合物は、石油タール油中やナフサ、灯油等の留分を接触改質した生成油中に含まれるメチルナフタレン、ジメチルナフタレンあるいはエチルナフタレン等を蒸留操作等により分離、回収し、これらをプロピル化することにより簡便に得ることができる。
【0009】
一方、本発明にいう脂肪族化合物は、沸点範囲が150〜450℃のノルマルパラフィン、イソパラフィン、ナフテンなどからなる化合物である。これらの化合物は、単品で用いても良いが、2種以上混合したものを用いても良い。
【0010】
この脂肪族化合物は、アスファルトピッチ、樹脂やワックス類に対する溶解力は低いが、浸透力が高いため、光学部品からアスファルトピッチ等を剥がす能力が大きい。
【0011】
なお、この脂肪族化合物としては、特には、浸透力が非常に強く、しかも臭気が非常に弱い、ノルマルパラフィン、特には炭素数が9〜18のノルマルパラフィンを用いることが好ましい。
【0012】
本発明の洗浄剤は、上記アルキルナフタレン化合物と脂肪族化合物を、重量比で、3:7〜7:3の範囲で混合した溶剤であり、これにより、アスファルトピッチ、樹脂やワックス類に対する溶解力が高く、しかも浸透力も強く、先ず、光学部品からアスファルトピッチ等を剥がし、次いで、これらを溶解、除去する能力に優れ、洗浄スピードが速い洗浄剤としたものである。上記アルキルナフタレン化合物:脂肪族化合物の重量比が3:7の比より、アルキルナフタレン化合物の割合が小さいと、汚れが完全に除去されず、また逆に、アルキルナフタレン化合物:脂肪族化合物の重量比が7:3の比より、アルキルナフタレン化合物が多いと、洗浄スピードが遅くなる。
【0013】
本発明の洗浄剤は、上記アルキルナフタレン化合物と脂肪族化合物とを上記比で混合した溶剤を主成分とするもので、本発明の顕著な効果のためには、この溶剤が50重量%以上、好ましくは70重量%以上、特に好ましくは90重量%以上含まれているものがよい。
【0014】
なお、本発明の光学部品用洗浄剤には、グリコールエーテル類やラクトン類などの溶解助剤、界面活性剤、防腐剤、酸化防止剤、紫外線吸収剤、或いは消泡剤等を添加しても良い。また、乳化剤を添加し、水と混合して使用しても良い。
【0015】
【実施例】
(洗浄力試験)
表1に示す一般性状及び成分を有するアルキルナフタレン系化合物(比較例1、比較例2、比較例3)、表2に示す一般性状を有する炭素数11〜12のノルマルパラフィン(比較例4、比較例5)、比較例3の5重量部と比較例4の5重量部とを混合した洗浄剤(実施例1)、比較例3の3重量部と比較例4の7重量部とを混合した洗浄剤(実施例2)、4−ブチロラクトン(比較例6)を用いて、研磨工程での仮固定用接着剤であるアスファルトピッチおよび保護膜であるアスファルトピッチと塩化ビニールの混合物の付着した光学レンズを、表3に示した温度で、1分間超音波洗浄した。洗浄結果を、次の評価基準で評価し、その結果を表3に示した。
A:汚れの残存が全く認められない。
B:汚れの残留が僅かに認められる。
C:汚れの残留がかなり認められる。
D:汚れがほとんど除去されない。
E:汚れが全く除去されない。
【0016】
【表1】
【0017】
【表2】
【0018】
【表3】
【0019】
実施例1および実施例2は、比較例1、比較例2、比較例3、比較例4、比較例5、比較例6に比べて残留汚れの量が少なく、光学部品用洗浄剤として優れていることが分かる。
【0020】
【発明の効果】
本発明の光学部品用洗浄剤は、塩素系化合物を含まず、研磨、加工する際に表面に付着したアスファルトピッチ、樹脂やワックス類等に対して優れた洗浄力を有するという格別の効果を奏する。[0001]
[Industrial applications]
The present invention relates to a cleaning agent for optical parts, in particular, when polishing and processing optical parts such as optical lenses and optical prisms, polishing asphalt pitch, resins and waxes used for temporary fixing or surface protection. And a cleaning agent for optical parts for cleaning and removing after processing.
[0002]
[Prior art]
Conventionally, chlorine-based cleaning agents such as perchlorethylene, trichloroethylene, and methylene chloride have been used as cleaning agents for optical components. Since such a cleaning agent for optical parts has environmental problems such as destruction of the ozone layer and toxicity, development of a substitute has been eagerly desired. Among the alternative detergents, low-boiling aromatic solvents have disadvantages such as strong odor and low flash point, while high-boiling aromatic solvents have very weak odor and high flash point. However, since the kinematic viscosity at room temperature is high, dirt is not easily diffused, and there is a problem that the dirt must be used under heating.Also, the dirt which is strongly adhered to the aliphatic solvent can hardly be removed, and is satisfactory. There was no alternative optical component cleaner yet.
[0003]
[Problems to be solved by the invention]
The present invention is to solve the above problems, an object of the present invention is to contain a chlorine-based compound, polishing, asphalt pitch adhered to the surface during processing, washing and removing resins and waxes and the like. An object of the present invention is to provide a cleaning agent for optical parts having excellent detergency.
[0004]
[Means for Solving the Problems]
The present invention as a means for achieving the above object has a boiling point range of 150 to 450 ° C. and a main component represented by the following general formula (I)
Embedded image
(In the formula, R 1 is a methyl group, an ethyl group, a propyl group or a butyl group, R 2 is a propyl group or a butyl group, m is 1 to 3, n is 1 to 3, and the position of the substituent is not limited.) The main component is a solvent obtained by mixing at least one alkylnaphthalene compound represented by the formula above and an aliphatic compound, preferably normal paraffin, in a weight ratio of 3: 7 to 7: 3.
[0005]
The alkylnaphthalene compound has a high solubility in asphalt pitch, resins and waxes. However, since the penetrating power is weak, the ability to peel asphalt pitch or the like from the optical component is small, and the cleaning speed is slow only with the alkylnaphthalene compound. The alkylnaphthalene compound has a high dissolving power for asphalt pitch and the like, and has a very low odor.
[0006]
An alkylnaphthalene compound of the above formula (I), ie, a compound in which 1 to 3 methyl, ethyl, propyl or butyl groups are added to a naphthalene ring, and 1 to 3 propyl or butyl groups are added. However, as these compounds, methylpropylnaphthalene, dimethylpropylnaphthalene, trimethylpropylnaphthalene, methyldipropylnaphthalene, dimethyldipropylnaphthalene, trimethyldipropylnaphthalene, methyltripropylnaphthalene, dimethyltripropylnaphthalene, trimethyltripropyl Naphthalene, ethyl propyl naphthalene, diethyl propyl naphthalene, triethyl propyl naphthalene, ethyl dipropyl naphthalene, diethyl dipropyl naphthalene, triethyl dipropyl naphthalene, ethyl Ripropylnaphthalene, diethyltripropylnaphthalene, triethyltripropylnaphthalene, dipropylnaphthalene, tripropylnaphthalene, tetrapropylnaphthalene, pentapropylnaphthalene, hexapropylnaphthalene, propylbutylnaphthalene, dipropylbutylnaphthalene, tripropylbutylnaphthalene, propyldibutyl Naphthalene, dipropyldibutylnaphthalene, tripropyldibutylnaphthalene, propyltributylnaphthalene, dipropyltributylnaphthalene, tripropyltributylnaphthalene, dibutylnaphthalene, tributylnaphthalene, tetrabutylnaphthalene, pentabutylnaphthalene, hexabutylnaphthalene, methylethylpropylnaphthalene, dimethyl Ethyl propyl naphthalene, Diethyl propyl naphthalene, methyl ethyl dipropyl naphthalene, dimethyl ethyl dipropyl naphthalene, methyl diethyl dipropyl naphthalene, methyl ethyl tripropyl naphthalene, dimethyl ethyl tripropyl naphthalene, methyl diethyl tripropyl naphthalene, methyl ethyl butyl naphthalene, dimethyl ethyl butyl naphthalene , Methyldiethylbutylnaphthalene, methylethyldibutylnaphthalene, dimethylethyldibutylnaphthalene, methyldiethyldibutylnaphthalene, methylethyltributylnaphthalene, dimethylethyltributylnaphthalene, methyldiethyltributylnaphthalene, methylpropylbutylnaphthalene, dimethylpropylbutylnaphthalene, methyldipropylbutyl Naphthalene, methyl propyl dib Tylnaphthalene, dimethylpropyldibutylnaphthalene, methyldipropyldibutylnaphthalene, methylpropyltributylnaphthalene, dimethylpropyltributylnaphthalene, methyldipropyltributylnaphthalene, ethylpropylbutylnaphthalene, diethylpropylbutylnaphthalene, ethyldipropylbutylnaphthalene, ethylpropyldibutylnaphthalene , Diethylpropyldibutylnaphthalene, ethyldipropyldibutylnaphthalene, ethylpropyltributylnaphthalene, diethylpropyltributylnaphthalene, ethyldipropyltributylnaphthalene, and the like.In these compounds, a methyl group, an ethyl group, a propyl group, a butyl group is It may be added at any position on the naphthalene ring. These alkylnaphthalene compounds may be used alone or as a mixture of two or more.
[0007]
Note that, in addition to the above-described compounds, the alkylnaphthalene compound may be mixed with other organic compounds, for example, benzene, naphthalene, indane, indene, biphenyl, or a compound in which an alkyl group or the like is added to these rings. It does not hinder. However, for the remarkable effect of the present invention, those containing the above-mentioned alkylnaphthalene compound having a boiling point range of 150 to 450 ° C in an amount of 50% by weight or more, preferably 70% by weight or more, particularly preferably 90% by weight or more are good. .
[0008]
The alkyl naphthalene compound referred to in the present invention is obtained by separating and recovering methyl naphthalene, dimethyl naphthalene, ethyl naphthalene, and the like contained in petroleum tar oil or a product oil obtained by contact-reforming a fraction such as kerosene by distillation or the like. Can be easily obtained by propylating them.
[0009]
On the other hand, the aliphatic compound according to the present invention is a compound having a boiling point range of 150 to 450 ° C. and composed of normal paraffin, isoparaffin, naphthene and the like. These compounds may be used alone or as a mixture of two or more.
[0010]
This aliphatic compound has a low dissolving power for asphalt pitch, resins and waxes, but has a high penetrating power, and thus has a large ability to peel off asphalt pitch and the like from optical components.
[0011]
As the aliphatic compound, it is particularly preferable to use normal paraffin, particularly normal paraffin having 9 to 18 carbon atoms, which has very strong osmotic power and very low odor.
[0012]
The cleaning agent of the present invention is a solvent in which the above-mentioned alkylnaphthalene compound and the aliphatic compound are mixed in a weight ratio of 3: 7 to 7: 3, and has a dissolving power for asphalt pitch, resin and wax. The cleaning agent has a high cleaning power and a high washing power, and has excellent ability to first remove asphalt pitch and the like from optical components, and then dissolve and remove them. When the weight ratio of the alkylnaphthalene compound: aliphatic compound is smaller than the ratio of 3: 7, if the ratio of the alkylnaphthalene compound is smaller, the dirt is not completely removed, and conversely, the weight ratio of the alkylnaphthalene compound: aliphatic compound. When the ratio of the alkylnaphthalene compound is larger than the ratio of 7: 3, the washing speed is reduced.
[0013]
The cleaning agent of the present invention is mainly composed of a solvent obtained by mixing the above-mentioned alkylnaphthalene compound and the aliphatic compound at the above-mentioned ratio. For the remarkable effect of the present invention, the solvent contains 50% by weight or more, Preferably, the content is 70% by weight or more, particularly preferably 90% by weight or more.
[0014]
The cleaning agent for optical parts of the present invention may contain a dissolution aid such as glycol ethers or lactones, a surfactant, a preservative, an antioxidant, an ultraviolet absorber, or an antifoaming agent. good. Further, an emulsifier may be added and used by mixing with water.
[0015]
【Example】
(Detergency test)
Alkyl naphthalene compounds having the general properties and components shown in Table 1 (Comparative Examples 1, 2 and 3), and normal paraffins having 11 to 12 carbon atoms having the general properties shown in Table 2 (Comparative Examples 4 and 5). Example 5), a detergent (Example 1) in which 5 parts by weight of Comparative Example 3 and 5 parts by weight of Comparative Example 4 were mixed, and 3 parts by weight of Comparative Example 3 and 7 parts by weight of Comparative Example 4 were mixed. An optical lens to which asphalt pitch as a temporary fixing adhesive and a mixture of asphalt pitch as a protective film and vinyl chloride are adhered in a polishing step using a cleaning agent (Example 2) and 4-butyrolactone (Comparative Example 6). Was subjected to ultrasonic cleaning at the temperature shown in Table 3 for 1 minute. The cleaning results were evaluated according to the following evaluation criteria, and the results are shown in Table 3.
A: No residual stain is observed.
B: Slight residue is observed.
C: Residual stain is considerably observed.
D: Dirt is hardly removed.
E: Dirt is not removed at all.
[0016]
[Table 1]
[0017]
[Table 2]
[0018]
[Table 3]
[0019]
In Examples 1 and 2, the amount of residual dirt is smaller than that of Comparative Examples 1, 2, 3, 4, 5, and 6, which is excellent as a cleaning agent for optical parts. I understand that there is.
[0020]
【The invention's effect】
The cleaning agent for an optical component of the present invention does not contain a chlorine-based compound, and has an outstanding effect of having an excellent detergency for asphalt pitch, resin, wax, and the like attached to the surface during polishing and processing. .
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP08354495A JP3582886B2 (en) | 1995-03-16 | 1995-03-16 | Cleaning agent for optical parts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP08354495A JP3582886B2 (en) | 1995-03-16 | 1995-03-16 | Cleaning agent for optical parts |
Publications (2)
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JPH08254602A JPH08254602A (en) | 1996-10-01 |
JP3582886B2 true JP3582886B2 (en) | 2004-10-27 |
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JP08354495A Expired - Lifetime JP3582886B2 (en) | 1995-03-16 | 1995-03-16 | Cleaning agent for optical parts |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP4530381B2 (en) * | 1999-12-08 | 2010-08-25 | 株式会社ジャパンエナジー | Cleaning liquid composition |
JP4530382B2 (en) * | 1999-12-09 | 2010-08-25 | 株式会社ジャパンエナジー | Washing liquid composition for wax and pitch |
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JPS557833A (en) * | 1978-07-03 | 1980-01-21 | Katsuraya Fine Goods | Drain pipe oil block dissolving agent |
US4732695A (en) * | 1987-02-02 | 1988-03-22 | Texo Corporation | Paint stripper compositions having reduced toxicity |
JP2819156B2 (en) * | 1989-06-12 | 1998-10-30 | 花王株式会社 | Detergent composition |
JPH0331400A (en) * | 1989-06-28 | 1991-02-12 | Central Glass Co Ltd | Detergent |
JPH0768551B2 (en) * | 1989-10-26 | 1995-07-26 | 花王株式会社 | Cleaning composition |
JP3044381B2 (en) * | 1990-02-28 | 2000-05-22 | 日本石油化学株式会社 | Article cleaning method and apparatus |
JP3056239B2 (en) * | 1990-11-15 | 2000-06-26 | 昭和電工株式会社 | Solder flux remover |
JPH06128592A (en) * | 1992-10-15 | 1994-05-10 | Tokuyama Sekiyu Kagaku Kk | Composition for dissolving wax |
JP3312758B2 (en) * | 1992-12-22 | 2002-08-12 | 山口日本電気株式会社 | Cleaning fluid for electronics |
JPH06220493A (en) * | 1993-01-28 | 1994-08-09 | Kureha Chem Ind Co Ltd | Cleaning solvent for liquid crystal cell |
JPH06240295A (en) * | 1993-02-19 | 1994-08-30 | F Tex:Kk | Dissolving and cleansing fluid for pitch, colophonium or the like |
JPH06258607A (en) * | 1993-03-02 | 1994-09-16 | F Tex:Kk | Dissolving and washing liquid for pitch, pine resin and the like |
JPH07163955A (en) * | 1993-12-14 | 1995-06-27 | Nippon Oil Co Ltd | Cleaning method for electric parts or electronic parts |
JPH07310096A (en) * | 1994-05-19 | 1995-11-28 | Nippon Petrochem Co Ltd | Cleaning material |
JPH0892600A (en) * | 1994-09-22 | 1996-04-09 | Canon Inc | Mixed solvent composition and method and device for cleansing with the same |
-
1995
- 1995-03-16 JP JP08354495A patent/JP3582886B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH08254602A (en) | 1996-10-01 |
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