JP5738467B1 - New manufacturing method of gold resinate - Google Patents
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- JP5738467B1 JP5738467B1 JP2014250859A JP2014250859A JP5738467B1 JP 5738467 B1 JP5738467 B1 JP 5738467B1 JP 2014250859 A JP2014250859 A JP 2014250859A JP 2014250859 A JP2014250859 A JP 2014250859A JP 5738467 B1 JP5738467 B1 JP 5738467B1
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- 239000010931 gold Substances 0.000 title claims abstract description 49
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 42
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 claims abstract description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 150000002344 gold compounds Chemical class 0.000 claims abstract description 9
- 239000007864 aqueous solution Substances 0.000 claims abstract description 6
- NEJMTSWXTZREOC-UHFFFAOYSA-N 4-sulfanylbutan-1-ol Chemical compound OCCCCS NEJMTSWXTZREOC-UHFFFAOYSA-N 0.000 claims abstract description 5
- OKUJJVAASUSBCG-UHFFFAOYSA-N 5-sulfanylpentan-1-ol Chemical compound OCCCCCS OKUJJVAASUSBCG-UHFFFAOYSA-N 0.000 claims abstract description 5
- UGZAJZLUKVKCBM-UHFFFAOYSA-N 6-sulfanylhexan-1-ol Chemical compound OCCCCCCS UGZAJZLUKVKCBM-UHFFFAOYSA-N 0.000 claims abstract description 5
- 125000003396 thiol group Chemical class [H]S* 0.000 claims abstract 3
- SHLSSLVZXJBVHE-UHFFFAOYSA-N 3-sulfanylpropan-1-ol Chemical compound OCCCS SHLSSLVZXJBVHE-UHFFFAOYSA-N 0.000 claims description 4
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 239000000243 solution Substances 0.000 abstract description 19
- SUVIGLJNEAMWEG-UHFFFAOYSA-N propane-1-thiol Chemical compound CCCS SUVIGLJNEAMWEG-UHFFFAOYSA-N 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 description 32
- 239000013078 crystal Substances 0.000 description 21
- 238000003756 stirring Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 10
- 239000010408 film Substances 0.000 description 10
- 239000002994 raw material Substances 0.000 description 9
- SDKPSXWGRWWLKR-UHFFFAOYSA-M sodium;9,10-dioxoanthracene-1-sulfonate Chemical compound [Na+].O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2S(=O)(=O)[O-] SDKPSXWGRWWLKR-UHFFFAOYSA-M 0.000 description 8
- 239000013076 target substance Substances 0.000 description 7
- PXQLVRUNWNTZOS-UHFFFAOYSA-N sulfanyl Chemical class [SH] PXQLVRUNWNTZOS-UHFFFAOYSA-N 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- QORAAKXXLPYSCF-UHFFFAOYSA-N [K+].[C-]#N.[C-]#N Chemical compound [K+].[C-]#N.[C-]#N QORAAKXXLPYSCF-UHFFFAOYSA-N 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- FDWREHZXQUYJFJ-UHFFFAOYSA-M gold monochloride Chemical compound [Cl-].[Au+] FDWREHZXQUYJFJ-UHFFFAOYSA-M 0.000 description 3
- 239000003446 ligand Substances 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- GRWFGVWFFZKLTI-IUCAKERBSA-N (-)-α-pinene Chemical compound CC1=CC[C@@H]2C(C)(C)[C@H]1C2 GRWFGVWFFZKLTI-IUCAKERBSA-N 0.000 description 2
- 241001274216 Naso Species 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- -1 gold ion Chemical class 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- RVEZZJVBDQCTEF-UHFFFAOYSA-N sulfenic acid Chemical class SO RVEZZJVBDQCTEF-UHFFFAOYSA-N 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 150000004685 tetrahydrates Chemical class 0.000 description 2
- WUOACPNHFRMFPN-SECBINFHSA-N (S)-(-)-alpha-terpineol Chemical compound CC1=CC[C@@H](C(C)(C)O)CC1 WUOACPNHFRMFPN-SECBINFHSA-N 0.000 description 1
- VVBXIYWYQPFUKL-UHFFFAOYSA-K 2-ethylhexanoate gold(3+) Chemical compound [Au+3].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O VVBXIYWYQPFUKL-UHFFFAOYSA-K 0.000 description 1
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- DJXRYKXIIQBVBJ-UHFFFAOYSA-K [Au+3].CC(C)(C)CCCCCC([O-])=O.CC(C)(C)CCCCCC([O-])=O.CC(C)(C)CCCCCC([O-])=O Chemical compound [Au+3].CC(C)(C)CCCCCC([O-])=O.CC(C)(C)CCCCCC([O-])=O.CC(C)(C)CCCCCC([O-])=O DJXRYKXIIQBVBJ-UHFFFAOYSA-K 0.000 description 1
- OVKDFILSBMEKLT-UHFFFAOYSA-N alpha-Terpineol Natural products CC(=C)C1(O)CCC(C)=CC1 OVKDFILSBMEKLT-UHFFFAOYSA-N 0.000 description 1
- MVNCAPSFBDBCGF-UHFFFAOYSA-N alpha-pinene Natural products CC1=CCC23C1CC2C3(C)C MVNCAPSFBDBCGF-UHFFFAOYSA-N 0.000 description 1
- 229940088601 alpha-terpineol Drugs 0.000 description 1
- 150000001622 bismuth compounds Chemical class 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 150000001845 chromium compounds Chemical class 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- ISDDBQLTUUCGCZ-UHFFFAOYSA-N dipotassium dicyanide Chemical compound [K+].[K+].N#[C-].N#[C-] ISDDBQLTUUCGCZ-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 150000002343 gold Chemical class 0.000 description 1
- 229910021505 gold(III) hydroxide Inorganic materials 0.000 description 1
- WDZVNNYQBQRJRX-UHFFFAOYSA-K gold(iii) hydroxide Chemical compound O[Au](O)O WDZVNNYQBQRJRX-UHFFFAOYSA-K 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002611 lead compounds Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- GRWFGVWFFZKLTI-UHFFFAOYSA-N rac-alpha-Pinene Natural products CC1=CCC2C(C)(C)C1C2 GRWFGVWFFZKLTI-UHFFFAOYSA-N 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 150000003284 rhodium compounds Chemical class 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
【課題】従来の金レジネートペーストの高温焼成における難点を改良して２５０℃以下の低温焼成によってもシート抵抗を有する金皮膜を形成できる金レジネートペーストに適した金レジネートの新規製造法を提供する。【解決手段】一般式（１）で表される金化合物の水溶液をｐＨ７．０〜１４．０に調整して温度を０℃〜１００℃に保ち、この溶液に２−メルカプトエタノール、３−ヒドロキシプロピルメルカプタン、４−ヒドロキシブチルメルカプタン、５−ヒドロキシペンチルメルカプタン及び６−ヒドロキシヘキシルメルカプタンから選ばれるメルカプトアルコール類を添加して１〜１５分間、反応させることにより金レジネートが収率よく得られる【選択図】なしA novel method for producing a gold resinate suitable for a gold resinate paste capable of forming a gold film having a sheet resistance even by low-temperature baking at 250 ° C. or less by improving the difficulty in high-temperature baking of a conventional gold resinate paste. An aqueous solution of a gold compound represented by the general formula (1) is adjusted to pH 7.0 to 14.0 to keep the temperature at 0 ° C. to 100 ° C., and 2-mercaptoethanol, 3-hydroxy is added to this solution. A gold resinate can be obtained in a high yield by adding a mercapto alcohol selected from propyl mercaptan, 4-hydroxybutyl mercaptan, 5-hydroxypentyl mercaptan and 6-hydroxyhexyl mercaptan and reacting for 1 to 15 minutes. ] None
Description
本発明は、金レジネートの製造方法に関し、さらに詳しくは、ポリアミドフイルム、プリント配線基板、セラミックICパッケージ、ウエハ等の電子部品へ金膜導電回路形成用などの導電性ペーストに用いられる金レジネートの新規製造法に関する。 The present invention relates to a method for producing a gold resinate, and more particularly, a novel gold resinate used for a conductive paste for forming a gold film conductive circuit on an electronic component such as a polyamide film, a printed wiring board, a ceramic IC package, or a wafer. It relates to the manufacturing method.
従来、基板上に膜状電極等の導電性パターンを形成するため導電性ペーストとして金レジネートペーストが知られている。
このような金レジネートペーストの代表的な用途としては、ファクシミリー等のプリンターヘッドとして使用されているサーマルプリンターヘッドの電極作成が挙げられる。
Conventionally, a gold resinate paste is known as a conductive paste for forming a conductive pattern such as a film electrode on a substrate.
A typical application of such a gold resinate paste is the production of electrodes for thermal printer heads used as printer heads for facsimiles and the like.
この出願に関連する先行技術としては、金レジネートとして、α―ピネン、α―ターピネオール、イソボルネオールのメルカプタン金、またはサルフィド金、アベチエン酸金、ネオデカン酸金、２−エチルヘキサン酸金、ナフテン酸金等の１種又は２種以上を用い、これにロジウム化合物、ビスマス化合物、クロム化合物、鉛化合物、ケイ素化合物、有機樹脂、有機溶媒を配合した金レジネートペーストを用い、セラミック基板にスクリーン印刷した後、８００〜８５０℃で焼成し、金薄膜を得ることが知られている（例えば、特許文献１）。
このような従来の金レジネートペーストは、８００℃以上の高温で焼成するため、基板としては、セラミックス等の高温に耐える材料しか使用することができず。耐熱性フィルムとして知られるポリアミドフイルム等の機能性樹脂のフィルムおよび基板へ適用することは不可能であった。また焼成炉として高温対応の物を使用しているためエネルギーコストがかかる問題もあった。
Prior art related to this application includes gold resinates such as α-pinene, α-terpineol, gold isocaptane, or sulfide gold, gold abethienate, gold neodecanoate, gold 2-ethylhexanoate, gold naphthenate. After using a gold resinate paste containing a rhodium compound, a bismuth compound, a chromium compound, a lead compound, a silicon compound, an organic resin, an organic solvent, and screen printing on a ceramic substrate, It is known that a gold thin film is obtained by baking at 800 to 850 ° C. (for example, Patent Document 1).
Since such a conventional gold resinate paste is fired at a high temperature of 800 ° C. or higher, only a material that can withstand high temperatures such as ceramics can be used as a substrate. It was impossible to apply to functional resin films such as polyamide films and substrates known as heat resistant films. Moreover, since the thing corresponding to high temperature is used as a baking furnace, there also existed a problem which requires energy cost.
本発明は、このような従来の金レジネートペーストの高温焼成における難点を改良して２５０℃以下の低温焼成によってもシート抵抗を有する金皮膜を形成できる金レジネートペーストに適した金レジネートの新規製造法を提供することを目的とする。 The present invention is a novel method for producing a gold resinate suitable for a gold resinate paste which can improve a difficulty in high-temperature baking of such a conventional gold resinate paste and can form a gold film having sheet resistance even by low-temperature baking at 250 ° C. or lower. The purpose is to provide.
本発明者は、上記課題を解決するため、低温で焼成することによりシート抵抗を有する金皮膜がえられる金レジネートの製造方法について鋭意検討した結果、金塩とメルカプトアルコール類とを不活性ガスの存在下に還元剤を含有する水溶液中で温度０℃〜９０℃反応させ、反応終了後、反応溶液を濃縮、晶析することにより得られた金レジネートは金レジネートペーストとし、ポリアミドフイルムにスクリーン印刷、２５０℃で焼成した結果、シート抵抗に優れた金成膜が得られることを知見し、特願２０１３−１９１３５４として既に特許出願している。 In order to solve the above problems, the present inventor has intensively studied a method for producing a gold resinate capable of obtaining a gold film having sheet resistance by baking at a low temperature. The gold resinate obtained by reacting the reaction solution in an aqueous solution containing a reducing agent in the presence of 0 ° C to 90 ° C and concentrating and crystallizing the reaction solution after completion of the reaction is used as a gold resinate paste and screen-printed on a polyamide film. As a result of firing at 250 ° C., it has been found that a gold film having excellent sheet resistance can be obtained, and a patent application has already been filed as Japanese Patent Application No. 2013-191354.
しかしながら、上記の特許の製造方法では水酸化金等の金塩の懸濁溶液に不活性ガスをバブリングしながら還元剤と配位子であるメルカプトアルコール類を反応の様子を確認しながらゆっくり添加して反応を進行させる必要があった。そのため、添加速度の調節が非常に難しく、反応速度と添加速度および合成系の温度のバランスが崩れてしまうと反応の進行が止まってしまったり、分解が生じてしまったり、副生成物（別の化合物）が生じたり、原料の金塩が還元したりと目的としている金レジネートを得ることが困難であった。つまり、この合成方法は熟練者でないと上手に合成が出来ないという問題があった。 However, in the production method of the above-mentioned patent, a reducing agent and a mercapto alcohol as a ligand are slowly added while confirming the reaction state while bubbling an inert gas into a suspension solution of gold salt such as gold hydroxide. It was necessary to proceed the reaction. Therefore, it is very difficult to control the addition rate, and if the balance between the reaction rate, the addition rate, and the temperature of the synthesis system is lost, the progress of the reaction may stop, decomposition may occur, It is difficult to obtain the desired gold resinate, such as the formation of a compound) or reduction of the gold salt of the raw material. That is, this synthesis method has a problem that it cannot be synthesized well unless it is an expert.
本発明者は、上記の問題点を改良すべく更に研究を進めた結果、本発明者が特許第５６２３６６８として既に特許を取得している金化合物である一般式（１）で表される金化合物の水溶液をｐＨ７．０〜１４．０に調整して温度を０℃〜１００℃に保ち、この溶液に２−メルカプトエタノール、３−ヒドロキシプロピルメルカプタン、４−ヒドロキシブチルメルカプタン、５−ヒドロキシペンチルメルカプタン及び６−ヒドロキシヘキシルメルカプタンから選ばれるメルカプトアルコール類を添加して１〜１５分間、反応させることにより金レジネートが収率よく得られることを知見して本発明に到達した。 As a result of further research to improve the above problems, the inventor has obtained a gold compound represented by the general formula (1), which is a gold compound that has already been patented as Patent No. 5623668. Was adjusted to pH 7.0 to 14.0 and the temperature was kept at 0 to 100 ° C., and 2-mercaptoethanol, 3-hydroxypropyl mercaptan, 4-hydroxybutyl mercaptan, 5-hydroxypentyl mercaptan and The inventors arrived at the present invention by discovering that a gold resinate can be obtained in a high yield by adding a mercapto alcohol selected from 6-hydroxyhexyl mercaptan and reacting for 1 to 15 minutes.
なお、本発明で使用している金塩の溶液以外の金塩で合成をした場合、反応せず原料が残ってしまったり、別の化合物が生じたりする為、合成が出来ない。今回原料に選んだ、一般式（１）で表される金化合物のように、１価の金塩であり配位子が交換し易く、かつ、水溶性の化合物でなければ目的物質である金レジネートを合成することができない。 In addition, when it synthesize | combines with gold salts other than the solution of the gold salt used by this invention, since it does not react and a raw material remains or another compound arises, it cannot synthesize | combine. As the gold compound represented by the general formula (1) selected as a raw material this time, it is a monovalent gold salt, the ligand can be easily exchanged, and if it is not a water-soluble compound, the target substance is gold. The resinate cannot be synthesized.
すなわち、本発明は、以下の内容をその発明の要旨とするものである。
（１）下記一般式（１）で表される金化合物の水溶液及び２−メルカプトエタノール、３−ヒドロキシプロピルメルカプタン、４−ヒドロキシブチルメルカプタン、５−ヒドロキシペンチルメルカプタン及び６−ヒドロキシヘキシルメルカプタンから選ばれるメルカプトアルコール類をｐＨ７．０〜１４．０に調整した水溶液中で温度を０℃〜１００℃で反応させることを特徴とする金イオンにメルカプトアルコール類が配位した下記一般式（２）で表される金レジネートの新規製造法。
一般式（１）
（式中、ＭはＮＨ４、Ｎａ、Ｋのうちのいずれか一つを表し、ｘ＞０、ｙ＞０、ａ＞０、ｂ＞０、ｘ＋ｙ＋ａ＋ｂ−１＞１である。）
一般式（２）
（式中、ｎは２〜６である）
That is, this invention makes the following content the summary of the invention.
(1) An aqueous solution of a gold compound represented by the following general formula (1) and a mercapto selected from 2-mercaptoethanol, 3-hydroxypropyl mercaptan, 4-hydroxybutyl mercaptan, 5-hydroxypentyl mercaptan and 6-hydroxyhexyl mercaptan It is represented by the following general formula (2) in which a mercapto alcohol is coordinated to a gold ion, characterized by reacting at a temperature of 0 ° C. to 100 ° C. in an aqueous solution adjusted to pH 7.0 to 14.0. New manufacturing method for gold resinate.
General formula (1)
(In the formula, M represents any one of NH 4 , Na, and K, and x> 0, y> 0, a> 0, b> 0, and x + y + a + b−1> 1.)
General formula (2)
(Wherein n is 2-6)
本発明の金レジネートの新規製造法によれば、従来の製造方法とは異なり不活性ガスが不要である。また、出発原料の添加速度、反応速度及び反応温度等詳細な調整が不要で反応時間が短時間で済む。しかも高収率で目的とする反応生成物を得ることができる。ゆえに、製造するためのエネルギーの削減、製造時間の短縮及び量産化が容易になる。
その結果、本発明では製造コストの低減及び環境負荷の低減が図られるので工業的利用価値大である。
According to the novel method for producing a gold resinate of the present invention, an inert gas is unnecessary unlike the conventional production method. Further, detailed adjustments such as the starting material addition rate, reaction rate, and reaction temperature are unnecessary, and the reaction time is short. In addition, the desired reaction product can be obtained in high yield. Therefore, it is easy to reduce energy for manufacturing, shorten manufacturing time, and mass production.
As a result, in the present invention, the manufacturing cost and the environmental load can be reduced, which is of great industrial utility value.
以下、本発明の金レジネートの新規製造法について詳細に説明する。
一般式（１）で表される金化合物を純水に溶かして溶液にする。この時、ｐＨは７．０〜１４．０の間におさまっている。この溶液を攪拌しながら０℃〜１００℃好ましくは３０℃〜５０℃に加温して維持する。そこに、メルカプトアルコール類を純水で希釈した溶液を添加する。
上記のメルカプトアルコール類としては、２−メルカプトエタノール、３−ヒドロキシプロピルメルカプタン、４−ヒドロキシブチルメルカプタン、５−ヒドロキシペンチルメルカプタン、６−ヒドロキシヘキシルメルカプタンが挙げられる。
反応系を攪拌しながら０℃〜１００℃好ましくは３０℃〜５０℃に維持して１〜１５分間、反応を促進する。
結晶が析出したら反応系を３０℃以下に冷却し、濾別して析出した結晶を得る。得られた結晶を１２０℃以下で乾燥して金レジネートの結晶を得る。
Hereafter, the novel manufacturing method of the gold resinate of this invention is demonstrated in detail.
A gold compound represented by the general formula (1) is dissolved in pure water to make a solution. At this time, the pH is between 7.0 and 14.0. The solution is heated and maintained at 0 ° C. to 100 ° C., preferably 30 ° C. to 50 ° C. with stirring. A solution obtained by diluting mercapto alcohols with pure water is added thereto.
Examples of the mercapto alcohol include 2-mercaptoethanol, 3-hydroxypropyl mercaptan, 4-hydroxybutyl mercaptan, 5-hydroxypentyl mercaptan, and 6-hydroxyhexyl mercaptan.
While stirring the reaction system, the temperature is maintained at 0 ° C. to 100 ° C., preferably 30 ° C. to 50 ° C., to accelerate the reaction for 1 to 15 minutes.
When crystals are precipitated, the reaction system is cooled to 30 ° C. or lower and filtered to obtain precipitated crystals. The obtained crystals are dried at 120 ° C. or lower to obtain gold resinate crystals.
上記の方法でメルカプトアルコール類が２−メルカプトエタノールで合成して得られた結晶を成分分析した結果、理論値と略一致するＡｕ：７１．８％（計算値：７１．９％）、Ｓ：１１．７％（計算値：１１．７％）であった。したがって、本発明の金レジネートは、上記一般式（２）で表される結晶であることを確認した。
以下、実施例により本発明を具体的に説明する。
As a result of component analysis of crystals obtained by synthesizing mercaptoalcohols with 2-mercaptoethanol by the above method, Au: 71.8% (calculated value: 71.9%), which almost agrees with the theoretical value, S: It was 11.7% (calculated value: 11.7%). Therefore, it confirmed that the gold resinate of this invention was a crystal | crystallization represented by the said General formula (2) .
Hereinafter, the present invention will be described specifically by way of examples.
Ｎａ３［Ａｕ（ＨＳＯ４）（ＨＳＯ３）（ＮａＳＯ４）（ＮａＳＯ３）］１６．９ｇに純水１００ｍｌを添加・攪拌して溶かし、溶液にする。この時のｐＨは９．０であった。この溶液を攪拌しながら４０℃に加温して維持する。そこに、２−メルカプトエタノール２．１ｇを純水で希釈して２０ｍｌにした溶液を添加する。
添加直後、直ぐに結晶が生じるが、反応を完全に終了させる為、添加終了後、そのまま４０℃に維持して１０分間、攪拌を継続して反応を促進する。
反応終了後、反応系を３０℃以下に冷却する。次いで、析出した結晶を濾過、純水で洗浄した後、更にエタノールで追加洗浄をする。得られた結晶は、１００℃で乾燥する事により、６．７ｇの淡黄色粉末状の結晶を得た。（収率：９６．３％）
得られた結晶の分析結果は下記の如くであった。
Ａｕ：７１．８％（計算値：７１．９％）、Ｓ：１１．７％（計算値：１１．７％）
100 ml of pure water is added to 16.9 g of Na 3 [Au (HSO 4 ) (HSO 3 ) (NaSO 4 ) (NaSO 3 )], and dissolved by stirring. The pH at this time was 9.0. The solution is warmed and maintained at 40 ° C. with stirring. A solution in which 2.1 g of 2-mercaptoethanol is diluted with pure water to 20 ml is added thereto.
Immediately after the addition, crystals are formed, but in order to complete the reaction, after the addition is completed, the reaction is promoted by maintaining stirring at 40 ° C. for 10 minutes.
After completion of the reaction, the reaction system is cooled to 30 ° C. or lower. Next, the precipitated crystals are filtered, washed with pure water, and further washed with ethanol. The obtained crystal was dried at 100 ° C. to obtain 6.7 g of a pale yellow powdery crystal. (Yield: 96.3%)
The analysis result of the obtained crystal was as follows.
Au: 71.8% (calculated value: 71.9%), S: 11.7% (calculated value: 11.7%)
Ｋ３［Ａｕ（ＨＳＯ４）（ＨＳＯ３）（ＫＳＯ４）（ＫＳＯ３）］１９．０ｇに純水１００ｍｌを添加・攪拌して溶かし、溶液にする。この時のｐＨは８．８であった。この溶液を攪拌しながら４０℃に加温して維持する。そこに、２−メルカプトエタノール２．１ｇを純水で希釈して２０ｍｌにした溶液を添加する。
添加直後、直ぐに結晶が生じるが、反応を完全に終了させる為、添加終了後、そのまま４０℃に維持して１０分間、攪拌を継続して反応を促進する。
反応終了後、反応系を３０℃以下に冷却する。次いで、析出した結晶を濾過、純水で洗浄した後、更にエタノールで追加洗浄をする。得られた結晶は、１００℃で乾燥する事により、６．８ｇの淡黄色粉末状の結晶を得た。（収率：９７．７％）
得られた結晶の分析結果は下記の如くであった。
Ａｕ：７１．８％（計算値：７１．９％）、Ｓ：１１．６％（計算値：１１．７％）
100 ml of pure water is added to 19.0 g of K 3 [Au (HSO 4 ) (HSO 3 ) (KSO 4 ) (KSO 3 )] and dissolved by stirring. The pH at this time was 8.8. The solution is warmed and maintained at 40 ° C. with stirring. A solution in which 2.1 g of 2-mercaptoethanol is diluted with pure water to 20 ml is added thereto.
Immediately after the addition, crystals are formed, but in order to complete the reaction, after the addition is completed, the reaction is promoted by maintaining stirring at 40 ° C. for 10 minutes.
After completion of the reaction, the reaction system is cooled to 30 ° C. or lower. Next, the precipitated crystals are filtered, washed with pure water, and further washed with ethanol. The obtained crystals were dried at 100 ° C. to obtain 6.8 g of pale yellow powdery crystals. (Yield: 97.7%)
The analysis result of the obtained crystal was as follows.
Au: 71.8% (calculated value: 71.9%), S: 11.6% (calculated value: 11.7%)
（ＮＨ４）３［Ａｕ（ＨＳＯ４）（ＨＳＯ３）（ＮＨ４ＳＯ４）（ＮＨ４ＳＯ３）］１６．３ｇに純水１００ｍｌを添加・攪拌して溶かし、溶液にする。この時のｐＨは８．６であった。この溶液を攪拌しながら４０℃に加温して維持する。そこに、２−メルカプトエタノール２．１ｇを純水で希釈して２０ｍｌにした溶液を添加する。
添加直後、直ぐに結晶が生じるが、反応を完全に終了させる為、添加終了後、そのまま４０℃に維持して１０分間、攪拌を継続して反応を促進する。
反応終了後、反応系を３０℃以下に冷却する。次いで、析出した結晶を濾過、純水で洗浄した後、更にエタノールで追加洗浄をする。得られた結晶は、１００℃で乾燥する事により、６．５ｇの淡黄色粉末状の結晶を得た。（収率：９３．４％）
得られた結晶の分析結果は下記の如くであった。
Ａｕ：７１．９％（計算値：７１．９％）、Ｓ：１１．６％（計算値：１１．７％）
（比較例１）
100 ml of pure water is added to 16.3 g of (NH 4 ) 3 [Au (HSO 4 ) (HSO 3 ) (NH 4 SO 4 ) (NH 4 SO 3 )], and dissolved by stirring. The pH at this time was 8.6. The solution is warmed and maintained at 40 ° C. with stirring. A solution in which 2.1 g of 2-mercaptoethanol is diluted with pure water to 20 ml is added thereto.
Immediately after the addition, crystals are formed, but in order to complete the reaction, after the addition is completed, the reaction is promoted by maintaining stirring at 40 ° C. for 10 minutes.
After completion of the reaction, the reaction system is cooled to 30 ° C. or lower. Next, the precipitated crystals are filtered, washed with pure water, and further washed with ethanol. The obtained crystal was dried at 100 ° C. to obtain 6.5 g of a pale yellow powdery crystal. (Yield: 93.4%)
The analysis result of the obtained crystal was as follows.
Au: 71.9% (calculated value: 71.9%), S: 11.6% (calculated value: 11.7%)
(Comparative Example 1)
塩化金酸四水和物（小島化学薬品株式会社製）２０．０ｇを高真空中の条件下で１００℃に加熱し、完全に水分を除去する。次いで、間接加熱にて１６０℃〜１８０℃を保ちながら結晶化するまで分解を促進して反応を進める。反応終了後、冷却して淡黄色結晶の塩化第一金８．５ｇを得た。
得られた塩化第一金５．９ｇに純水１００ｍｌを添加・攪拌して溶解する。この溶液を攪拌しながら４０℃に加温して維持する。そこに、２−メルカプトエタノール２．１ｇを純水で希釈して２０ｍｌにした溶液を添加する。
反応系を４０℃に保ったまま攪拌を維持して反応を促進したが、添加して暫くすると、塩化第一金が不均化反応を起こして分解してしまい、目的物質を得る事が出来なかった。
（比較例２）
20.0 g of chloroauric acid tetrahydrate (manufactured by Kojima Chemical Co., Ltd.) is heated to 100 ° C. under high vacuum conditions to completely remove moisture. Next, the reaction is promoted by promoting decomposition until crystallization while maintaining the temperature at 160 ° C. to 180 ° C. by indirect heating. After completion of the reaction, the reaction mixture was cooled to obtain 8.5 g of pale yellow crystalline first gold chloride.
100 ml of pure water is added to 5.9 g of the obtained gold chloride and dissolved by stirring. The solution is warmed and maintained at 40 ° C. with stirring. A solution in which 2.1 g of 2-mercaptoethanol is diluted with pure water to 20 ml is added thereto.
While maintaining the reaction system at 40 ° C., the stirring was maintained to promote the reaction, but after a while after addition, the gold chloride was disproportionated and decomposed to obtain the target substance. There wasn't.
(Comparative Example 2)
ＫＡｕ（ＣＮ）２（シアン化第一金カリウム）（小島化学薬品株式会社製）７．３ｇに純水１００ｍｌを添加・攪拌して溶かし、溶液にする。この溶液を攪拌しながら４０℃に加温して維持する。そこに、２−メルカプトエタノール２．１ｇを純水で希釈して２０ｍｌにした溶液を添加する。
反応系を４０℃に保ったまま攪拌を維持して反応を促進したが、反応が進行せず、目的物質を得る事が出来なかった。
（比較例３）
To 7.3 g of KAu (CN) 2 (potassium cyanide potassium) (manufactured by Kojima Chemical Co., Ltd.), 100 ml of pure water is added and stirred to dissolve, to obtain a solution. The solution is warmed and maintained at 40 ° C. with stirring. A solution in which 2.1 g of 2-mercaptoethanol is diluted with pure water to 20 ml is added thereto.
While maintaining the reaction system at 40 ° C., stirring was maintained to promote the reaction, but the reaction did not proceed and the target substance could not be obtained.
(Comparative Example 3)
比較例２のＫＡｕ（ＣＮ）２（シアン化第一金カリウム）をＫＡｕ（ＣＮ）４（シアン化第二金カリウム）に代えて同様の実験を実施したが、比較例２と同様、目的物質を得る事が出来なかった。
（比較例４）
A similar experiment was performed by replacing KAu (CN) 2 (potassium cyanide cyanide) in Comparative Example 2 with KAu (CN) 4 (potassium cyanide cyanide). I could not get.
(Comparative Example 4)
比較例２のＫＡｕ（ＣＮ）２（シアン化第一金カリウム）及び比較例３のＫＡｕ（ＣＮ）４（シアン化第二金カリウム）を塩化金酸四水和物（小島化学薬品株式会社製）に代えて同様の実験を実施したが、比較例２及び比較例３と同様、目的物質を得ることができなかった。 KAu (CN) 2 (potassium cyanide cyanide) of Comparative Example 2 and KAu (CN) 4 (potassium cyanide cyanide) of Comparative Example 3 were chloroauric acid tetrahydrate (manufactured by Kojima Chemical Co., Ltd.) In the same manner as in Comparative Example 2 and Comparative Example 3, the target substance could not be obtained.
上記のように比較例１〜比較例４では、目的物質である金レジネートを得ることができない。本発明で原料として使用している一般式（１）で表される金化合物以外の金塩で合成をした場合、反応が進行せず原料が残り、分解や副生成物（別の化合物）が生じてしまう。これは原料の金塩が還元したりするためである。今回原料に選んだ、一般式（１）で表される金化合物のように、１価の金塩で配位子が交換し易く、かつ、水溶性の化合物でなければ目的物質である金レジネートを合成することができない。
なお、本発明の製造条件より高温、または、長時間、若しくは、その両方の製造条件で合成した場合、原料の１つであるメルカプトアルコール類２分子が反応してジスルフィドを形成する際に放出する電子により、原料となる金塩が還元されてしまう。つまり、原料の１つであるメルカプトアルコール類が還元剤として作用してしまうため目的物質である金レジネートを合成することができない。
As described above, in Comparative Examples 1 to 4, it is not possible to obtain a gold resinate that is a target substance. When synthesizing with a gold salt other than the gold compound represented by the general formula (1) used as a raw material in the present invention, the reaction does not proceed and the raw material remains, and decomposition and by-products (other compounds) are generated. It will occur. This is because the raw gold salt is reduced. The gold resinate that is the target substance if the ligand is easily exchanged with a monovalent gold salt and is not a water-soluble compound, such as the gold compound represented by the general formula (1), selected as a raw material. Cannot be synthesized.
In addition, when the synthesis is carried out at a temperature higher than the production conditions of the present invention, for a long time, or both, the release occurs when two molecules of mercaptoalcohol, which is one of the raw materials, react to form disulfide. The gold salt as a raw material is reduced by the electrons. That is, since the mercapto alcohol, which is one of the raw materials, acts as a reducing agent, the gold resinate that is the target substance cannot be synthesized.
Claims (1)
一般式（１）
（式中、ＭはＮＨ４、Ｎａ、Ｋのうちのいずれか一つを表し、ｘ＞０、ｙ＞０、ａ＞０、ｂ＞０、ｘ＋ｙ＋ａ＋ｂ−１＞１である。）
一般式（２）
（式中、ｎは２〜６である）
An aqueous solution of a gold compound represented by the following general formula (1) and a mercapto alcohol selected from 2-mercaptoethanol, 3-hydroxypropyl mercaptan, 4-hydroxybutyl mercaptan, 5-hydroxypentyl mercaptan and 6-hydroxyhexyl mercaptan A gold resinate represented by the following general formula (2) in which a mercapto alcohol is coordinated to a gold ion, which is reacted in an aqueous solution adjusted to pH 7.0 to 14.0 at a temperature of 0 ° C to 100 ° C. New manufacturing method.
General formula (1)
(In the formula, M represents any one of NH 4 , Na, and K, and x> 0, y> 0, a> 0, b> 0, and x + y + a + b−1> 1.)
General formula (2)
(Wherein n is 2-6)
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