JPH075444B2 - Gypsum dissolving agent - Google Patents
Gypsum dissolving agentInfo
- Publication number
- JPH075444B2 JPH075444B2 JP60122019A JP12201985A JPH075444B2 JP H075444 B2 JPH075444 B2 JP H075444B2 JP 60122019 A JP60122019 A JP 60122019A JP 12201985 A JP12201985 A JP 12201985A JP H075444 B2 JPH075444 B2 JP H075444B2
- Authority
- JP
- Japan
- Prior art keywords
- acid
- gypsum
- salt
- carbonate
- dissolving agent
- 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
Links
- 229910052602 gypsum Inorganic materials 0.000 title claims description 16
- 239000010440 gypsum Substances 0.000 title claims description 16
- 239000003795 chemical substances by application Substances 0.000 title claims description 4
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 9
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 8
- GPSDUZXPYCFOSQ-UHFFFAOYSA-N m-toluic acid Chemical compound CC1=CC=CC(C(O)=O)=C1 GPSDUZXPYCFOSQ-UHFFFAOYSA-N 0.000 claims description 6
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 4
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 claims description 3
- FPIQZBQZKBKLEI-UHFFFAOYSA-N ethyl 1-[[2-chloroethyl(nitroso)carbamoyl]amino]cyclohexane-1-carboxylate Chemical compound ClCCN(N=O)C(=O)NC1(C(=O)OCC)CCCCC1 FPIQZBQZKBKLEI-UHFFFAOYSA-N 0.000 claims description 3
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 3
- ZWLPBLYKEWSWPD-UHFFFAOYSA-N o-toluic acid Chemical compound CC1=CC=CC=C1C(O)=O ZWLPBLYKEWSWPD-UHFFFAOYSA-N 0.000 claims description 3
- 239000004805 Cyclohexane-1,2-dicarboxylic acid Substances 0.000 claims description 2
- QSAWQNUELGIYBC-UHFFFAOYSA-N cyclohexane-1,2-dicarboxylic acid Chemical compound OC(=O)C1CCCCC1C(O)=O QSAWQNUELGIYBC-UHFFFAOYSA-N 0.000 claims description 2
- KHARCSTZAGNHOT-UHFFFAOYSA-N naphthalene-2,3-dicarboxylic acid Chemical compound C1=CC=C2C=C(C(O)=O)C(C(=O)O)=CC2=C1 KHARCSTZAGNHOT-UHFFFAOYSA-N 0.000 claims description 2
- 150000005323 carbonate salts Chemical class 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 238000000034 method Methods 0.000 description 8
- 239000007864 aqueous solution Substances 0.000 description 7
- 238000004090 dissolution Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 235000011121 sodium hydroxide Nutrition 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000005711 Benzoic acid Substances 0.000 description 2
- 239000007983 Tris buffer Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- -1 alkali metal salt Chemical class 0.000 description 2
- 235000010233 benzoic acid Nutrition 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 2
- 239000004299 sodium benzoate Substances 0.000 description 2
- 235000010234 sodium benzoate Nutrition 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical class [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 1
- QZKRHPLGUJDVAR-UHFFFAOYSA-K EDTA trisodium salt Chemical compound [Na+].[Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O QZKRHPLGUJDVAR-UHFFFAOYSA-K 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- XONPDZSGENTBNJ-UHFFFAOYSA-N molecular hydrogen;sodium Chemical compound [Na].[H][H] XONPDZSGENTBNJ-UHFFFAOYSA-N 0.000 description 1
- 229920002113 octoxynol Polymers 0.000 description 1
- LPNBBFKOUUSUDB-UHFFFAOYSA-N p-toluic acid Chemical compound CC1=CC=C(C(O)=O)C=C1 LPNBBFKOUUSUDB-UHFFFAOYSA-N 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 229940086066 potassium hydrogencarbonate Drugs 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Dental Preparations (AREA)
Description
【発明の詳細な説明】 この発明は、石膏溶解用組成物に係るものである。石膏
溶解は、歯科医療分野において、必要とされる作業であ
る。人工義歯の作成に石膏が多く使用されているとこ
ろ、該石膏が機具その他に付着し、再使用を妨げるので
その除去を必要とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composition for dissolving gypsum. Gypsum dissolution is a required task in the dental field. When gypsum is often used for making artificial dentures, it is necessary to remove it because it adheres to equipment and the like and hinders reuse.
その方法としては、物理的に除く方法、化学的に除く方
法があるが、化学反応を利用した化学的除去方法が、手
間がかからないので好ましい。As the method, there are a method of physically removing and a method of chemically removing, but a chemical removing method utilizing a chemical reaction is preferable because it does not take time and effort.
従来、石膏を除去する化学的方法としてエチレンジアミ
ン四酢酸の三ナトリウム塩と酸性炭酸アルカリの混合水
溶液を使用する方法（特開昭50−105570号）、エチレン
ジアミノ四酢酸の二ナトリウム塩、トリス、トリトンＸ
−100、NaHCO3の水性媒体溶液及び界面活性剤を使用す
る方法（C.A.83,168491y,1975年）が知られている。更
に、エチレンジアミン四酢酸と無水炭酸ナトリウム及び
安息香酸ナトリウムの水溶液を使用する方法（特開昭60
−81022号）も知られている。Conventionally, as a chemical method for removing gypsum, a method using a mixed aqueous solution of a trisodium salt of ethylenediaminetetraacetic acid and an acidic alkali carbonate (JP-A-50-105570), a disodium salt of ethylenediaminotetraacetic acid, Tris, Triton X
-100, a method using an aqueous medium solution of NaHCO 3 and a surfactant (CA 83 , 168491y, 1975) is known. Further, a method using an aqueous solution of ethylenediaminetetraacetic acid, anhydrous sodium carbonate and sodium benzoate (Japanese Patent Laid-Open No. Sho 60-60)
-81022) is also known.
本発明者らは、更にもっと効果的に石膏を除去できる組
成物の探索を行って研究を重ねた結果、本発明に至った
ものである。即ち、本発明の石膏溶解用剤は、エチレン
ジアミン四酢酸（以下、EDTAと記す）の塩（例えば、ア
ンモニウム塩、ナトリウム塩又はカリウム塩 あるいは
その混合塩）と、シクロヘキサンカルボン酸、シクロヘ
キサン−1,2−ジカルボン酸、ｏ−トルイル酸、ｍ−ト
ルイル酸、ｎ−カプロン酸、イタコン酸、2,3−ナフタ
リンジカルボン酸、フタル酸から選ばれる少なくとも一
つの酸又はそのアルカリ金属塩と、炭酸塩例えば炭酸水
素ナトリウム、炭酸水素カリウム、炭酸水素アンモニウ
ム、炭酸ナトリウム、炭酸カリウムの少なくとも一種と
から組成される。これを水に溶かして溶液として使用す
る。かかる水溶液は次のようにしても調整することがで
きる。即ち、EDTAを水に入れてスラリー状とし、これに
アルカリ金属水酸化物例えば水酸化ナトリウム、水酸化
カリウム、水酸化アンモニウム又はこれらの混合物を加
えてEDTAを溶解する。EDTAは溶解し、系は均一な水溶液
となる。これに、前記した酸の少なくとも一種をそのま
まで、或いはそのアルカリ金属塩として加える。更に前
記した炭酸塩を少なくとも一種加える。The present inventors have completed the present invention as a result of further research by searching for a composition that can remove gypsum more effectively. That is, the gypsum dissolving agent of the present invention is a salt of ethylenediaminetetraacetic acid (hereinafter referred to as EDTA) (for example, ammonium salt, sodium salt or potassium salt or a mixed salt thereof), cyclohexanecarboxylic acid, and cyclohexane-1,2. -At least one acid selected from dicarboxylic acid, o-toluic acid, m-toluic acid, n-caproic acid, itaconic acid, 2,3-naphthalene dicarboxylic acid, phthalic acid or an alkali metal salt thereof, and a carbonate such as carbonic acid. It is composed of at least one of sodium hydrogen, potassium hydrogen carbonate, ammonium hydrogen carbonate, sodium carbonate and potassium carbonate. This is dissolved in water and used as a solution. Such an aqueous solution can also be prepared as follows. That is, EDTA is put in water to form a slurry, and an alkali metal hydroxide such as sodium hydroxide, potassium hydroxide, ammonium hydroxide or a mixture thereof is added to dissolve EDTA. EDTA dissolves and the system becomes a uniform aqueous solution. To this, at least one of the above-mentioned acids is added as it is or as its alkali metal salt. Further, at least one of the above-mentioned carbonates is added.
酸若しくはそのアルカリ塩又は炭酸塩は水溶液にして加
えることもできる。かかる組成の混合物及び水中で調整
される水溶液も本発明−石膏溶解用剤−の範囲に含まれ
る。The acid or its alkali salt or carbonate may be added in the form of an aqueous solution. A mixture of such a composition and an aqueous solution prepared in water are also included in the scope of the present invention-agent for dissolving gypsum.
かくして得られた水溶液の中に石膏付着物を浸漬すれ
ば、付着した石膏は容易に溶解して取り除かれる。By immersing the gypsum deposit in the thus obtained aqueous solution, the attached gypsum can be easily dissolved and removed.
シクロヘキサンカルボン酸、シクロヘキサン−1,2−ジ
カルボン酸、ｏ−トルイル酸、ｍ−トルイル酸、ｎ−カ
プロン酸、イタコン酸、フタル酸がなぜ石膏の溶解除去
に効果を発揮するのかについては全く不明であるが、結
晶格子への入り易さと関係しているのではないかと推測
される。トルイル酸には−CH3と−COOHの相対的置換位
置によってオルト体、メタ体、パラ体の三種が存在する
が、パラ体は本発明の目的とする効果に逆行し、この化
合物の添加によって溶解時間が長くなるという結果を得
ている。It is completely unclear why cyclohexanecarboxylic acid, cyclohexane-1,2-dicarboxylic acid, o-toluic acid, m-toluic acid, n-caproic acid, itaconic acid, and phthalic acid are effective in dissolving and removing gypsum. However, it is presumed that it may be related to the ease of entering the crystal lattice. Ortho member by relative substitution position of -CH 3 and -COOH is the toluate, Metatai, three types of paralogs are present, paralogs is counter to the intended effect of the present invention, the addition of this compound The result is a longer dissolution time.
本発明の組成物には、界面活性剤、着色剤、そのほか公
知技術に明らかにされている化合物、例えばトリス、安
息香酸などを加えてもよい。The composition of the present invention may contain a surfactant, a colorant, and other compounds disclosed in the known art, such as tris and benzoic acid.
以下実施例を記述して本発明を更に詳述する。The present invention will be described in more detail with reference to the following examples.
実施例１ （イ）水約60g中にEDTA16gを加えスラリー状とした。こ
れに48％化苛性ソーダ溶液15.5gを加え撹拌した。Example 1 (ii) 16 g of EDTA was added to about 60 g of water to form a slurry. To this, 15.5 g of 48% sodium hydroxide solution was added and stirred.
EDTAが溶けたのち、ｎ−カプロン酸1gを加え、次いで、
炭酸水素ナトリウム4.6gを加え溶解したのち、水を加え
て全量を100gとした。After EDTA was dissolved, add 1 g of n-caproic acid, and then
After 4.6 g of sodium hydrogen carbonate was added and dissolved, water was added to bring the total amount to 100 g.
（ロ）焼石膏50gと水35gとをよく混練し、型に流し込ん
で成型し、0.5g重量の石膏片を作った。(B) 50 g of calcined gypsum and 35 g of water were well kneaded and cast into a mold to form a gypsum piece weighing 0.5 g.
（ハ）（イ）で得た溶液50mlをビーカーに入れ、（ロ）
で得た石膏片をこれに沈め、石膏片が完全に溶解するま
でに要した時間を測定した。(C) Put 50 ml of the solution obtained in (A) in a beaker, and (B)
The gypsum piece obtained in 1. was submerged in this, and the time required until the gypsum piece was completely dissolved was measured.
実施例２〜９ 実施例１の（イ）において使用したｎ−カプロン酸の代
わりに各種の酸を使用した以外は実施例１と同様にして
溶解時間を測定した。Examples 2 to 9 The dissolution time was measured in the same manner as in Example 1 except that various acids were used instead of n-caproic acid used in (i) of Example 1.
実施例10 実施例３の（イ）において48％苛性ソーダ溶液の代わり
に40％苛性カリ溶液26gを使用した以外は実施例３と同
様にして溶解時間を測定した。Example 10 The dissolution time was measured in the same manner as in Example 3 except that 26 g of 40% caustic soda solution was used instead of the 48% caustic soda solution in (3) of Example 3.
比較例１ 実施例１の（イ）において使用したｎ−カプロン酸の代
わりに安息香酸を使用した以外は実施例１と同様にして
溶解時間を測定した。Comparative Example 1 The dissolution time was measured in the same manner as in Example 1 except that benzoic acid was used instead of n-caproic acid used in (i) of Example 1.
比較例２ 実施例１の（イ）において使用したｎ−カプロン酸を除
いた以外は実施例１と同様にして溶解時間を測定した。Comparative Example 2 The dissolution time was measured in the same manner as in Example 1 except that the n-caproic acid used in (i) of Example 1 was omitted.
比較例３ 実施例１の（イ）において使用した48％苛性ソーダ溶液
を使用せず、ｎ−カプロン酸の代わりに安息香酸ナトリ
ウム0.86g、炭酸水素ナトリウムの代わりに無水炭酸ナ
トリウム11.2gを使用した以外は実施例１と同様にして
溶解時間を測定した。Comparative Example 3 Except that the 48% caustic soda solution used in (a) of Example 1 was not used, sodium benzoate 0.86 g was used instead of n-caproic acid, and anhydrous sodium carbonate 11.2 g was used instead of sodium hydrogen carbonate. The dissolution time was measured in the same manner as in Example 1.
これらの結果を１に示す。The results are shown in 1.
Claims (1)
2−ジカルボン酸、ｏ−トルイル酸、ｍ−トルイル酸、
ｎ−カプロン酸、イタコン酸、2,3−ナフタリンジカル
ボン酸、フタル酸又はこれらの塩の中少なくとも一種を
必須成分として含む石膏溶解用剤。1. A salt of ethylenediaminetetraacetic acid, (b) carbonate salt, (c) cyclohexanecarboxylic acid, cyclohexane-1,
2-dicarboxylic acid, o-toluic acid, m-toluic acid,
An agent for dissolving gypsum containing at least one of n-caproic acid, itaconic acid, 2,3-naphthalene dicarboxylic acid, phthalic acid or salts thereof as an essential component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60122019A JPH075444B2 (en) | 1985-06-05 | 1985-06-05 | Gypsum dissolving agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60122019A JPH075444B2 (en) | 1985-06-05 | 1985-06-05 | Gypsum dissolving agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61280410A JPS61280410A (en) | 1986-12-11 |
| JPH075444B2 true JPH075444B2 (en) | 1995-01-25 |
Family
ID=14825565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60122019A Expired - Lifetime JPH075444B2 (en) | 1985-06-05 | 1985-06-05 | Gypsum dissolving agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH075444B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100131460A (en) * | 2008-02-22 | 2010-12-15 | 글락소스미스클라인 엘엘씨 | Chemical Mechanical Polishing of Dentures |
-
1985
- 1985-06-05 JP JP60122019A patent/JPH075444B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61280410A (en) | 1986-12-11 |
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|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |