JP2797593B2 - Fluorinated hydrocarbon azeotropic compositions - Google Patents

Fluorinated hydrocarbon azeotropic compositions

Info

Publication number
JP2797593B2
JP2797593B2 JP2019239A JP1923990A JP2797593B2 JP 2797593 B2 JP2797593 B2 JP 2797593B2 JP 2019239 A JP2019239 A JP 2019239A JP 1923990 A JP1923990 A JP 1923990A JP 2797593 B2 JP2797593 B2 JP 2797593B2
Authority
JP
Japan
Prior art keywords
composition
weight
r225ca
r225cb
present
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
JP2019239A
Other languages
Japanese (ja)
Other versions
JPH0327333A (en
Inventor
俊一 鮫島
健郎 北村
直洋 渡辺
昭雄 浅野
徹 上村
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.)
AGC Inc
Original Assignee
Asahi Glass 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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to JP2019239A priority Critical patent/JP2797593B2/en
Publication of JPH0327333A publication Critical patent/JPH0327333A/en
Application granted granted Critical
Publication of JP2797593B2 publication Critical patent/JP2797593B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、代替フロンとして使用できるとともに溶剤
等として優れた特性を有する新規なフッ素化炭化水素系
共沸様組成物に関するものである。
Description: TECHNICAL FIELD The present invention relates to a novel fluorinated hydrocarbon-based azeotropic composition which can be used as a substitute for chlorofluorocarbon and has excellent properties as a solvent and the like.

[従来の技術] フッ素化炭化水素系化合物(以下単にフロンという)
は、毒性が少なく不燃で化学的に安定なものが多く、標
準沸点が異なる各種フロンが入手できることから、これ
らの特性を活かして溶剤や発泡剤等として1,1,2−トリ
クロロ−1,2,2−トリフルオロエタン(R113)が、発泡
剤やプロペラントとしてトリクロロモノフルオロエタン
(R11)が、プロペラントや冷媒としてジクロロジフル
オロメタン(R12)が使われている。
[Prior art] Fluorinated hydrocarbon compounds (hereinafter simply referred to as chlorofluorocarbon)
Since many non-flammable, non-flammable and chemically stable fluorocarbons with different standard boiling points are available, these characteristics are utilized to make 1,1,2-trichloro-1,2 1,2-trifluoroethane (R113) is used as a blowing agent and a propellant, and trichloromonofluoroethane (R11) is used as a propellant and a refrigerant, and dichlorodifluoromethane (R12) is used.

[発明が解決しようとする課題] 化学的に特に安定なR11,R12,R13は対流圏内での寿命
が長く、拡散して成層圏に達し、ここで太陽光線により
分解して発生する塩素ラジカルがオゾンと連鎖反応を起
こし、オゾン層を破壊するとのことから、これら従来の
フロンの使用規制が実施されることとなった。このた
め、これらの従来のフロンに代わり、オゾン層を破壊し
にくい代替フロンの探索が活発に行なわれている。
[Problems to be Solved by the Invention] R11, R12, and R13, which are chemically particularly stable, have a long life in the troposphere and diffuse to reach the stratosphere, where chlorine radicals generated by decomposition by sunlight are converted into ozone. It causes a chain reaction and destroys the ozone layer, and the use of these conventional fluorocarbons has been regulated. Therefore, instead of these conventional fluorocarbons, the search for alternative fluorocarbons that are less likely to destroy the ozone layer is being actively conducted.

本発明は、従来のフロンと同等な種々の優れた特性を
有しており代替フロンとして有用な炭素数が3の新規な
含水素クロロフルオロプロパン系フロからなる共沸様組
成物を提供することを目的とするものである。
An object of the present invention is to provide an azeotrope-like composition comprising a novel hydrogen-containing chlorofluoropropane-based fluorocarbon having 3 carbon atoms, which has various excellent properties equivalent to conventional fluorocarbons and is useful as an alternative fluorocarbon. It is intended for.

[課題を解決するための手段] 本発明は3,3−ジクロロ−1,1,1,2,2−ペンタフルオロ
プロパン(R225ca)及び1,3−ジクロロ−1,1,2,2,3−ペ
ンタフルオロプロパン(R225cb)からなるフッ素化炭化
水素系共沸様組成物に関するものである。本発明の組成
物は不燃性であり極めて良好な共沸様特性を示し、特に
洗浄溶液として従来のR113単体と同程度の洗浄力を有す
るため、R113代替として極めて有用なものである。
[Means for Solving the Problems] The present invention relates to 3,3-dichloro-1,1,1,2,2-pentafluoropropane (R225ca) and 1,3-dichloro-1,1,2,2,3 A fluorinated hydrocarbon azeotropic composition comprising pentafluoropropane (R225cb). The composition of the present invention is nonflammable and exhibits extremely good azeotropic-like properties. In particular, since the composition has a detergency equivalent to that of conventional R113 alone as a cleaning solution, it is very useful as a substitute for R113.

更に、リサイクルしても組成の変動が少ないこと、又
従来の単一フロンと同じ使い方ができ、従来技術の大幅
な変更を要しないこと等の利点がある。
Further, there is an advantage that the composition does not fluctuate even when recycled, and the same usage as that of the conventional single fluorocarbon can be performed, so that a significant change of the conventional technology is not required.

本発明の組成物の共沸様特性は、R225caとR225cbの混
合組成比の全範囲に渡って良好である。従って、本発明
の組成物中のR225caとR225cbの混合組成比は、特に限定
されないが、好ましくは、R225caが99.99重量%〜0.01
重量%、R225cbが0.01重量%〜99.99重量%である。
The azeotropic properties of the composition of the present invention are good over the entire range of the mixed composition ratio of R225ca and R225cb. Accordingly, the mixture composition ratio of R225ca and R225cb in the composition of the present invention is not particularly limited, but preferably, R225ca is 99.99% by weight to 0.01%.
% By weight, R225cb is 0.01% to 99.99% by weight.

本発明の組成物には、用途に応じてその他の成分を更
に添加混合することができる。例えば、溶剤としての用
途においては、ペンタン,イソペンタン,ヘキサン,イ
ソヘキサン,ネオヘキサン,ヘプタン,イソヘプタン,
2,3−ジメチルブタン,シクロペンタン等の炭化水素
類、ニトロメタン,ニトロエタン,ニトロプロパン等の
ニトロアルカン類、ジエチルアミン,トリエチルアミ
ン,イソプロピルアミン,ブチルアミン,イソブチルア
ミン等のアミン類、メタノール,エタノール、n−プロ
ピルアルコール,i−プロピルアルコール,n−ブタノー
ル,i−ブタノール,s−ブタノール,t−ブタノール等のア
ルコール類、メチルセロソルブ,テトラヒドロフラン,
1,4−ジオキサン等のエーテル類、アセトン,メチルエ
チルケトン,メチルブチルケトン等のケトン類、酢酸エ
チル,酢酸プロピル,酢酸ブチル等のエステル類、ジク
ロロメタン,trans−1,2−ジクロロエチレン,cis−1,2−
ジクロロエチレン,2−ブロモプロパン等のハロゲン化炭
化水素類、その他、1,1−ジクロロ−1−フルオロエタ
ン等の本発明以外のフロン類等を適宜添加することがで
きる。
Other components can be further added to and mixed with the composition of the present invention depending on the use. For example, in the use as a solvent, pentane, isopentane, hexane, isohexane, neohexane, heptane, isoheptane,
Hydrocarbons such as 2,3-dimethylbutane and cyclopentane; nitroalkanes such as nitromethane, nitroethane and nitropropane; amines such as diethylamine, triethylamine, isopropylamine, butylamine and isobutylamine; methanol, ethanol and n-propyl Alcohols such as alcohol, i-propyl alcohol, n-butanol, i-butanol, s-butanol, t-butanol, methyl cellosolve, tetrahydrofuran,
Ethers such as 1,4-dioxane, ketones such as acetone, methyl ethyl ketone and methyl butyl ketone, esters such as ethyl acetate, propyl acetate and butyl acetate, dichloromethane, trans-1,2-dichloroethylene, cis-1,2 −
Halogenated hydrocarbons such as dichloroethylene and 2-bromopropane, and other fluorocarbons other than the present invention such as 1,1-dichloro-1-fluoroethane can be appropriately added.

R225ca及びR225cbからなる本発明の共沸様組成物は、
従来のフロンと同様、熱媒体や発泡剤等の各種用途に使
用でき、特に溶剤として用いた場合、従来のR113と同程
度の溶解力を有するため好適である。溶剤の具体的な用
途としては、フラックス,グリース,油,ワックス,イ
ンキ等の除去剤、塗料用溶剤,抽出剤、ガラス,セラミ
ックス,プラスチック,ゴム,金属製各種物品,特にIC
製品,電気機器,精密機械,光学レンズ等の洗浄剤や水
切り剤等を挙げることができる。洗浄方法としては、手
拭き,浸漬,スプレー,揺動,超音波洗浄,蒸気洗浄等
を採用すればよい。
The azeotropic composition of the present invention consisting of R225ca and R225cb,
Like conventional CFCs, it can be used for various applications such as a heating medium and a foaming agent, and is particularly suitable when used as a solvent because it has the same dissolving power as conventional R113. Specific applications of solvents include fluxes, greases, oils, waxes, removers for inks, paint solvents, extractants, glass, ceramics, plastics, rubber, metal products, especially ICs.
Examples include cleaning agents and drainage agents for products, electrical equipment, precision instruments, optical lenses, and the like. As a cleaning method, hand wiping, dipping, spraying, rocking, ultrasonic cleaning, steam cleaning, or the like may be employed.

[実施例] 以下に本発明の実施例を示す。[Example] An example of the present invention will be described below.

実施例1 下記の組成からなる溶剤組成物1000gを蒸留フラスコ
に入れ、理論段数20段の精留塔を用い、大気圧下で蒸留
を行なった。
Example 1 1000 g of a solvent composition having the following composition was placed in a distillation flask, and distillation was performed under atmospheric pressure using a rectification column having 20 theoretical plates.

(組成) (重量%) R225ca(沸点51.1℃) 50 R225cb(沸点56.1℃) 50 その結果、54℃において留分320gを得た。このものを
ガスクロマトグラフで測定した結果、次の組成であっ
た。
(Composition) (% by weight) R225ca (boiling point 51.1 ° C) 50 R225cb (boiling point 56.1 ° C) 50 As a result, 320 g of a fraction was obtained at 54 ° C. This was measured by gas chromatography to find that it had the following composition.

(組成) (重量%) R225ca 52 R225cb 48 実施例2 下記の組成からなる溶剤組成物1000gを蒸留フラスコ
に入れ、理論段数20段の精留塔を用い、大気圧下で蒸留
を行なった。
(Composition) (% by weight) R225ca 52 R225cb 48 Example 2 1000 g of a solvent composition having the following composition was placed in a distillation flask, and distillation was performed under atmospheric pressure using a rectification column having 20 theoretical plates.

(組成) (重量%) R225ca(沸点51.1℃) 80 R225cb(沸点56.1℃) 20 その結果、52℃において留分300gを得た。このものを
ガスクロマトグラフで測定した結果、次の組成であっ
た。
(Composition) (% by weight) R225ca (boiling point 51.1 ° C) 80 R225cb (boiling point 56.1 ° C) 20 As a result, 300 g of a fraction was obtained at 52 ° C. This was measured by gas chromatography to find that it had the following composition.

(組成) (重量%) R225ca 81 R225cb 19 実施例3 下記の組成からなる溶剤組成物1000gを蒸留フラスコ
に入れ、理論段数20段の精留塔を用い、大気圧下で蒸留
を行なった。
(Composition) (% by weight) R225ca 81 R225cb 19 Example 3 1000 g of a solvent composition having the following composition was placed in a distillation flask, and distillation was performed under atmospheric pressure using a rectification column having 20 theoretical plates.

(組成) (重量%) R225ca(沸点51.1℃) 20 R225cb(沸点56.1℃) 80 その結果、55℃において留分290gを得た。このものを
ガスクロマトグラフで測定した結果、次の組成であっ
た。
(Composition) (% by weight) R225ca (boiling point 51.1 ° C) 20 R225cb (boiling point 56.1 ° C) 80 As a result, 290 g of a fraction was obtained at 55 ° C. This was measured by gas chromatography to find that it had the following composition.

(組成) (重量%) R225ca 21 R225cb 79 実施例4 下記の組成からなる溶剤組成物1000gを蒸留フラスコ
に入れ、理論段数20段の精留塔を用い、大気圧下で蒸留
を行なった。
(Composition) (% by weight) R225ca 21 R225cb 79 Example 4 1000 g of a solvent composition having the following composition was placed in a distillation flask, and distillation was performed under atmospheric pressure using a rectification column having 20 theoretical plates.

(組成) (重量%) R225ca(沸点51.1℃) 0.02 R225cb(沸点56.1℃) 99.98 その結果、56℃において留分310gを得た。このものを
ガスクロマトグラフで測定した結果、次の組成であっ
た。
(Composition) (% by weight) R225ca (boiling point 51.1 ° C) 0.02 R225cb (boiling point 56.1 ° C) 99.98 As a result, 310 g of a fraction was obtained at 56 ° C. This was measured by gas chromatography to find that it had the following composition.

(組成) (重量%) R225ca 0.02 R225cb 99.98 実施例5 下記の組成からなる溶剤組成物1000gを蒸留フラスコ
に入れ、理論段数20段の精留塔を用い、大気圧下で蒸留
を行なった。
(Composition) (% by weight) R225ca 0.02 R225cb 99.98 Example 5 1000 g of a solvent composition having the following composition was placed in a distillation flask, and distillation was performed under atmospheric pressure using a rectification column having 20 theoretical plates.

(組成) (重量%) R225ca(沸点51.1℃) 99.99 R225cb(沸点56.1℃) 0.01 その結果、51℃において留分510gを得た。このものを
ガスクロマトグラフで測定した結果、次の組成であっ
た。
(Composition) (% by weight) R225ca (boiling point 51.1 ° C) 99.99 R225cb (boiling point 56.1 ° C) 0.01 As a result, 510 g of a fraction was obtained at 51 ° C. This was measured by gas chromatography to find that it had the following composition.

(組成) (重量%) R225ca 99.99 R225cb 0.01 実施例6 本発明の組成物(R225ca/R225cb=50重量%/50重量
%)を用いて機械油の洗浄試験を行なった。
(Composition) (% by weight) R225ca 99.99 R225cb 0.01 Example 6 A cleaning test of machine oil was performed using the composition of the present invention (R225ca / R225cb = 50% by weight / 50% by weight).

SUS−304のテストピース(25mm×30mm×2mm厚)を機
械油(日本石油製CQ−30)中に浸漬した後、本発明の前
記組成物に5分間浸漬した。その結果、機械油はR113と
同様、良好に除去できることが確認された。
A test piece (25 mm x 30 mm x 2 mm thick) of SUS-304 was immersed in machine oil (CQ-30 manufactured by Nippon Oil Co., Ltd.), and then immersed in the composition of the present invention for 5 minutes. As a result, it was confirmed that the machine oil could be removed well as in R113.

実施例7 本発明の組成物(R225ca/R225cb=80重量%/20重量
%)を用いて機械油の洗浄試験を行なった。
Example 7 A cleaning test of a machine oil was performed using the composition of the present invention (R225ca / R225cb = 80% by weight / 20% by weight).

SUS−304のテストピース(25mm×30mm×2mm厚)を機
械油(日本石油製CQ−30)中に浸漬した後、本発明の前
記組成物に5分間浸漬した。その結果、機械油はR113と
同様、良好に除去できることが確認された。
A test piece (25 mm x 30 mm x 2 mm thick) of SUS-304 was immersed in machine oil (CQ-30 manufactured by Nippon Oil Co., Ltd.), and then immersed in the composition of the present invention for 5 minutes. As a result, it was confirmed that the machine oil could be removed well as in R113.

実施例8 本発明の組成物(R225ca/R225cb=20重量%/80重量
%)を用いて機械油の洗浄試験を行なった。
Example 8 A cleaning test of machine oil was performed using the composition of the present invention (R225ca / R225cb = 20% by weight / 80% by weight).

SUS−304のテストピース(25mm×30mm×2mm厚)を機
械油(日本石油製CQ−30)中に浸漬した後、本発明の前
記組成物に5分間浸漬した。その結果、機械油はR113と
同様、良好に除去できることが確認された。
A test piece (25 mm x 30 mm x 2 mm thick) of SUS-304 was immersed in machine oil (CQ-30 manufactured by Nippon Oil Co., Ltd.), and then immersed in the composition of the present invention for 5 minutes. As a result, it was confirmed that the machine oil could be removed well as in R113.

実施例9 本発明の組成物(R225ca/R225cb=50重量%/50重量
%)についてタグ式測定法(JIS−K2265)に従って測定
したところ引火点がなく不燃であることが確認された。
Example 9 The composition of the present invention (R225ca / R225cb = 50% by weight / 50% by weight) was measured in accordance with the tag-type measurement method (JIS-K2265), and it was confirmed that there was no flash point and that it was nonflammable.

実施例10 3槽式洗浄機(温浴槽、冷浴槽、蒸気槽からなる。)
を用いて本発明の組成物の組成変化を調べた。その結果
を第1表〜第3表に示す。
Example 10 Three-tank type washer (composed of a hot tub, a cold tub, and a steam tub)
Was used to examine the composition change of the composition of the present invention. The results are shown in Tables 1 to 3.

[発明の効果] 本発明のフッ素化炭化水素系共沸様組成物は、不燃性
で従来のフロン類が有している優れた特性と同等以上の
特性を有する。又、極めて良好な共沸様特性を有するた
めリサイクル時に組成変動が極めて少なく、従来の単一
フロンと同じ使い方ができ、従来技術の大幅な変更を必
要とせず、そのまま適用できる等の利点がある。
[Effects of the Invention] The fluorinated hydrocarbon-based azeotropic composition of the present invention is nonflammable and has properties equal to or better than the excellent properties of conventional fluorocarbons. In addition, it has extremely good azeotropic-like properties, so there is very little change in composition at the time of recycling, it can be used in the same way as conventional single CFCs, and there is an advantage that it can be applied as it is without requiring a significant change in the conventional technology. .

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 FI C11D 7/50 C11D 7/50 C23G 5/028 C23G 5/028 G02C 13/00 G02C 13/00 H05K 3/26 H05K 3/26 (58)調査した分野(Int.Cl.6,DB名) C07C 19/10──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 Identification code FI C11D 7/50 C11D 7/50 C23G 5/028 C23G 5/028 G02C 13/00 G02C 13/00 H05K 3/26 H05K 3/26 (58) Field surveyed (Int. Cl. 6 , DB name) C07C 19/10

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】3,3−ジクロロ−1,1,1,2,2−ペンタフルオ
ロプロパン及び1,3−ジクロロ−1,1,2,2,3−ペンタフル
オロプロパンからなるフッ素化炭化水素系共沸様組成
物。
1. A fluorinated hydrocarbon comprising 3,3-dichloro-1,1,1,2,2-pentafluoropropane and 1,3-dichloro-1,1,2,2,3-pentafluoropropane Azeotropic compositions.
【請求項2】3,3−ジクロロ−1,1,1,2,2−ペンタフルオ
ロプロパン99.99重量%〜0.01重量%及び1,3−ジクロロ
−1,1,2,2,3−ペンタフルオロプロパン0.01重量%〜99.
99重量%からなるフッ素化炭化水素系共沸様組成物。
2. The composition according to claim 1, wherein 99.99% to 0.01% by weight of 3,3-dichloro-1,1,1,2,2-pentafluoropropane and 1,3-dichloro-1,1,2,2,3-pentafluoro Propane 0.01% by weight to 99.
99% by weight of a fluorinated hydrocarbon azeotropic composition.
JP2019239A 1989-02-06 1990-01-31 Fluorinated hydrocarbon azeotropic compositions Expired - Lifetime JP2797593B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019239A JP2797593B2 (en) 1989-02-06 1990-01-31 Fluorinated hydrocarbon azeotropic compositions

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1-25652 1989-02-06
JP2565289 1989-02-06
JP2019239A JP2797593B2 (en) 1989-02-06 1990-01-31 Fluorinated hydrocarbon azeotropic compositions

Publications (2)

Publication Number Publication Date
JPH0327333A JPH0327333A (en) 1991-02-05
JP2797593B2 true JP2797593B2 (en) 1998-09-17

Family

ID=26356071

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019239A Expired - Lifetime JP2797593B2 (en) 1989-02-06 1990-01-31 Fluorinated hydrocarbon azeotropic compositions

Country Status (1)

Country Link
JP (1) JP2797593B2 (en)

Also Published As

Publication number Publication date
JPH0327333A (en) 1991-02-05

Similar Documents

Publication Publication Date Title
JP2751428B2 (en) 3,3-dichloro-1,1,1,2,2-pentafluoropropane-based composition
JP2794834B2 (en) 1,3-dichloro-1,1,2,2,3-pentafluoropropane-based composition
JP2734624B2 (en) Fluorinated hydrocarbon-based azeotropic compositions
JP2689573B2 (en) Fluorinated hydrocarbon azeotropic and pseudoazeotropic mixtures
JP2743446B2 (en) Azeotropic composition and pseudo-azeotropic composition
JP2797593B2 (en) Fluorinated hydrocarbon azeotropic compositions
JP2792134B2 (en) Fluorinated hydrocarbon azeotropic compositions
JP2734623B2 (en) Fluorinated hydrocarbon-based azeotropic compositions
JP2737246B2 (en) Fluorinated hydrocarbon azeotropic compositions
JP2692231B2 (en) Fluorinated hydrocarbon-based azeotropic and azeotrope-like compositions
JP2737250B2 (en) Fluorinated hydrocarbon pseudoazeotrope
JP2780364B2 (en) Fluorinated hydrocarbon azeotropic compositions
JP2737249B2 (en) Fluorinated hydrocarbon pseudoazeotrope
JP2692232B2 (en) Fluorinated hydrocarbon azeotropes and pseudo-azeotropes
JP2692229B2 (en) Fluorinated hydrocarbon azeotropes and pseudo-azeotropes
JP2692230B2 (en) Fluorinated hydrocarbon azeotropes and azeotrope-like compositions
JP2692234B2 (en) Fluorinated hydrocarbon azeotropes and azeotrope-like mixtures
JP2701413B2 (en) Fluorinated hydrocarbon azeotropes and pseudo-azeotropes
JP2780374B2 (en) Fluorinated hydrocarbon azeotropic compositions
JP2737260B2 (en) Fluorinated hydrocarbon azeotropic and pseudo-azeotropic compositions
JP2738034B2 (en) Fluorinated hydrocarbon azeotropic and pseudo-azeotropic compositions
JPH02202830A (en) 1,1-dichloro-2,2,3,3,3-pentafluoropropane-based azeotrope and pseudo azeotrope composition
JPH02209828A (en) Azeotropic and azeotrope-like mixture of chlorotetrafluoropropane
JPH02207026A (en) Azeotrope and azeotrope-like mixture of dichloropentafluoropropane
JPH02207028A (en) Azeotrope and azeotrope-like composition of dichloropentafluoropropane

Legal Events

Date Code Title Description
FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080703

Year of fee payment: 10

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080703

Year of fee payment: 10

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090703

Year of fee payment: 11

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090703

Year of fee payment: 11

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100703

Year of fee payment: 12

EXPY Cancellation because of completion of term
FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100703

Year of fee payment: 12