JPS62278160A - Binder composition for dewaxing ceramic formed body - Google Patents
Binder composition for dewaxing ceramic formed bodyInfo
- Publication number
- JPS62278160A JPS62278160A JP61121164A JP12116486A JPS62278160A JP S62278160 A JPS62278160 A JP S62278160A JP 61121164 A JP61121164 A JP 61121164A JP 12116486 A JP12116486 A JP 12116486A JP S62278160 A JPS62278160 A JP S62278160A
- Authority
- JP
- Japan
- Prior art keywords
- component
- supercritical
- binder
- binder composition
- weight
- 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.)
- Granted
Links
- 239000011230 binding agent Substances 0.000 title claims description 86
- 239000000203 mixture Substances 0.000 title claims description 43
- 239000000919 ceramic Substances 0.000 title claims description 39
- 239000012530 fluid Substances 0.000 claims description 43
- 239000000843 powder Substances 0.000 claims description 20
- -1 fatty acid salts Chemical class 0.000 claims description 18
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 12
- 239000000194 fatty acid Substances 0.000 claims description 12
- 229930195729 fatty acid Natural products 0.000 claims description 12
- 239000001993 wax Substances 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 150000004665 fatty acids Chemical class 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 229920000178 Acrylic resin Polymers 0.000 claims description 5
- 239000004925 Acrylic resin Substances 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 239000004793 Polystyrene Substances 0.000 claims description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 229920002223 polystyrene Polymers 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 150000001298 alcohols Chemical class 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 229920000058 polyacrylate Polymers 0.000 claims 1
- 229920000193 polymethacrylate Polymers 0.000 claims 1
- 238000005238 degreasing Methods 0.000 description 23
- 238000000605 extraction Methods 0.000 description 15
- 239000007789 gas Substances 0.000 description 15
- 238000000194 supercritical-fluid extraction Methods 0.000 description 14
- 230000007547 defect Effects 0.000 description 13
- 238000001746 injection moulding Methods 0.000 description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 8
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 5
- 150000002148 esters Chemical class 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- 235000021355 Stearic acid Nutrition 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- FLKPEMZONWLCSK-UHFFFAOYSA-N diethyl phthalate Chemical compound CCOC(=O)C1=CC=CC=C1C(=O)OCC FLKPEMZONWLCSK-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 239000008117 stearic acid Substances 0.000 description 3
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 2
- KYKAJFCTULSVSH-UHFFFAOYSA-N chloro(fluoro)methane Chemical compound F[C]Cl KYKAJFCTULSVSH-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- DCXXMTOCNZCJGO-UHFFFAOYSA-N Glycerol trioctadecanoate Natural products CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 229920002125 Sokalan® Chemical class 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 description 1
- 229940063655 aluminum stearate Drugs 0.000 description 1
- 229920001276 ammonium polyphosphate Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 235000019809 paraffin wax Nutrition 0.000 description 1
- 235000019271 petrolatum Nutrition 0.000 description 1
- 150000003021 phthalic acid derivatives Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004584 polyacrylic acid Chemical class 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 229920006163 vinyl copolymer Polymers 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
３、発明の詳細な説明
［産業上の利用分野］
本発明は、超臨界流体或いは加圧液化流体を用いてセラ
ミック成形体中のバインダーを除去する晩脂法における
。最適のセラミック用バインダー組成物に関する。特に
、溶出バインダー成分と溶出困難バインダー成分とその
添加助剤の特定の成分の組合わせにより最適な超臨界抽
出のためのセラミック成形体用バインダー組成物に関す
る。Detailed Description of the Invention 3. Detailed Description of the Invention [Industrial Application Field] The present invention relates to a late-greasing method in which a binder in a ceramic molded body is removed using a supercritical fluid or a pressurized liquefied fluid. The present invention relates to an optimal binder composition for ceramics. In particular, the present invention relates to a binder composition for a ceramic molded body that is optimized for supercritical extraction by combining a specific component of an eluting binder component, a hard-to-elute binder component, and an additive auxiliary thereof.
［従来の技術］
超臨界流体の有する特異な抽出特性を利用したグリーン
セラミ／り成形体の焼成前のバインダーの抽出は、従来
、抽出槽において、所定の圧力。[Prior Art] Conventionally, binder extraction before firing of green ceramic/remolded bodies using the unique extraction characteristics of supercritical fluids has been carried out using a predetermined pressure in an extraction tank.
温度の条件のもとに目的とするバインダー成分を抽出す
るものである。The target binder component is extracted under temperature conditions.
一般的に三えば、射出成形法によりセラミックス焼結体
を得る方法として、セラミックス粉末と有機バインダー
（熱可塑性樹脂やワックス等）を加熱混合して流動性を
賦与して射出成形し１次に得られた成形体を長時間かけ
て加熱脱脂し、バインダーを分解除去した後、焼結する
方法がよく知られているが５割れ、膨れ、変形等欠陥の
ない脱脂グリーンセラミック体を得るためには、非常に
長時間（数日間）を要している。また、肉厚品はどその
困難きは増大し、不良率が大きいなど問題点が多い。Generally speaking, as a method of obtaining a ceramic sintered body by injection molding, ceramic powder and an organic binder (thermoplastic resin, wax, etc.) are heated and mixed to impart fluidity, and then injection molded. A well-known method is to heat and degrease the green ceramic body over a long period of time, decompose and remove the binder, and then sinter it. , it takes a very long time (several days). In addition, thick-walled products have many problems, such as increased difficulty and a high defective rate.
このような点から超臨界抽出法が提案された（本出願人
による特願昭５９−２７３４８７及び５９−２７３４８
８号）が２通常の、従来の加熱脱脂で用いられたバイン
ダー組成では、この超臨界抽出法には不適当な点も見つ
けられた。即ち。From this point of view, the supercritical extraction method was proposed (Japanese Patent Applications No. 59-273487 and No. 59-27348 filed by the present applicant).
It was also found that the binder composition used in conventional thermal degreasing, which is the standard No. 8), is unsuitable for this supercritical extraction method. That is.
具体的に述べると、超臨界抽出法の実施にあたＤ、低融
点で強度も低いバインダーを使用すると、セラミックス
粉末とバインダーの混合物は。Specifically, when carrying out the supercritical extraction method, if a binder with a low melting point and low strength is used, the mixture of ceramic powder and binder will be.
バインダーの融点を境にして急激に固化或いは軟化し、
また溶融状態では粘度が低いために射出成形が容易でな
いという問題を有している。このような点から１本発明
のバインダー組成体を発明したものである。Rapidly solidifies or softens past the melting point of the binder,
Furthermore, since the viscosity is low in the molten state, injection molding is not easy. From this point of view, the binder composition of the present invention was invented.
尚１本明細書において［超臨界流体抽出］とは、超臨界
流体或いは加圧液化流体の存在下において物質の蒸気圧
の増加と、化学的親和力の差とを利用して物質を抽出す
る方法を云う。1 In this specification, "supercritical fluid extraction" refers to a method of extracting a substance by utilizing an increase in vapor pressure of the substance and a difference in chemical affinity in the presence of a supercritical fluid or pressurized liquefied fluid. says.
［発明が解決しようとする問題点〕
本発明は超臨界或いはそれに近い流体の有する特異な抽
出特性を利用する超臨界抽出に適するバインダー組成を
提供しようとするものである０本発明は、４つの異なる
機能を有する成分の組合せによる超臨界抽出にかけるべ
きセラミンク成形体用の最適なバインダー組成物を提供
することを目的とする。更に２本発明は、セラミ／ラス
成形体の射出成形を比較的に容易にでき、そのセラミッ
クス成形体を二酸化炭素、ノロンガス等の超臨界或いは
加圧流体に接触させると１〜３時間の極めて短時間で抽
出脱脂され、しかも割れ、膨れ、変形等の欠陥の発生し
難いバインダー組成物を提供することを目的とする。従
って１本発明は、でラミｙクス敗形体作成において、製
造簡易化及び省エネルギー化ができるセラミック成形体
用の最適なバインダー組成物を提供することを目的とす
る。[Problems to be Solved by the Invention] The present invention aims to provide a binder composition suitable for supercritical extraction that utilizes the unique extraction characteristics of supercritical or near-supercritical fluids. It is an object of the present invention to provide an optimal binder composition for ceramic molded bodies to be subjected to supercritical extraction using a combination of components having different functions. Furthermore, the present invention makes injection molding of a ceramic/lath molded body relatively easy, and when the ceramic molded body is brought into contact with a supercritical or pressurized fluid such as carbon dioxide or noron gas, it can be injection molded in an extremely short time of 1 to 3 hours. It is an object of the present invention to provide a binder composition that can be extracted and degreased in time and is less likely to cause defects such as cracking, blistering, and deformation. Accordingly, an object of the present invention is to provide an optimal binder composition for a ceramic molded body that can simplify production and save energy in the production of a laminate compact.
［問題点を解決するための手段］
本発明は、超臨界或いは加圧液化流体を用いて脱脂でき
るセラミック成形体用バインダー組成物において。[Means for Solving the Problems] The present invention provides a binder composition for a ceramic molded body that can be degreased using a supercritical or pressurized liquefied fluid.
Ａ、超臨界或いは加圧液化流体により比較的に抽出容易
な溶出バインダー成分（成分Ａ）ｉＢ、超臨界或いは加
圧液化流体により比較的に抽出され難いが成形体に強度
を学える溶出困囃バインダー成分（成分Ｂ）；
Ｃ１成分Ｂに柔軟性と流動性を与える可塑性付与成分（
成分Ｃ）及び
Ｄ、セラミック粉末の滑りを良くする潤滑性付学成分（
成分Ｄ）を
組み合わせたことを特徴とする前記バインダー組成物で
ある。更に１本発明は、前記バインダー組成物において
、成分Ａは、３０〜９５１量％、成分Ｂは、５〜７０重
量％、成分Ｃは、０〜３０ｉ量％、成分りは、０〜２５
１ｉ量％である範囲が好適である。そして２本発明にお
いては、成分Ａは、高級アルコール、パラフィンワック
ス、脂肪酸、脂肪酸塩から選択される１〜３種のものに
でき、また、成分Ｂは、ポリプロピレン、ポリエチレン
、ポリスチレン、エチレン酢Ｈビニル共重合体、ポリメ
タクリル酸エステル又はポリアクリル酸エステルなどの
アクリル系樹脂、ワンクス、アククチツクポルプロピレ
ン、ポリエチレングリコールの１種以上で構成されるも
のを利用できる。A. Elution binder component (component A) that is relatively easy to extract with supercritical or pressurized liquefied fluid.iB. Elution-difficult component that is relatively difficult to extract with supercritical or pressurized liquefied fluid but can impart strength to the molded product. Binder component (component B); C1 plasticity imparting component that gives flexibility and fluidity to component B (
Components C) and D, lubricating components that improve the slippage of ceramic powder (
The binder composition is characterized in that it contains component D) in combination. Furthermore, in the binder composition of the present invention, component A is 30 to 951% by weight, component B is 5 to 70% by weight, component C is 0 to 30% by weight, and component weight is 0 to 25% by weight.
A range of 1i% is preferred. In the present invention, component A can be one to three selected from higher alcohols, paraffin wax, fatty acids, and fatty acid salts, and component B can be polypropylene, polyethylene, polystyrene, ethylene vinegar H-vinyl Copolymers, acrylic resins such as polymethacrylic acid esters or polyacrylic acid esters, one or more of acrylic resins such as wanx, acidic polypropylene, and polyethylene glycol can be used.
〔作用コ
本発明の超臨界或いはそれに近い流体による抽出処理の
ためのセラミック成形体用の最適なバインダー組成物は
、超臨界抽出の特性を最も利用でさる新規なバインダー
組成物であＤ、上記の４種の成分を組合せた新規なバイ
ンダー組成物である。即ち１本発明の超臨界流体抽出セ
ラミック成形体用の最適なバインダー組成物は、超臨界
抽出技術をうまく利用するためのものである。[Function] The optimal binder composition for ceramic molded bodies for extraction treatment with supercritical or near-supercritical fluid according to the present invention is a novel binder composition that best utilizes the characteristics of supercritical extraction. This is a novel binder composition that combines four types of components. That is, one optimal binder composition for the supercritical fluid extracted ceramic compact of the present invention is one that takes advantage of supercritical extraction technology.
一般的に云えば、超臨界或いはそれに近い流体による抽
出では、超臨界ガスの溶剤としての能力は、その密度に
大きく依存している。即ち、超臨界或いはそれに近い状
態にあるガスの密度は、普通の気体状態のものよりかな
り大きく、臨界温度付近では、液体状態の密度にほぼ匹
敵している。Generally speaking, in extraction with supercritical or near-supercritical fluids, the ability of the supercritical gas as a solvent is highly dependent on its density. That is, the density of a gas in a supercritical or near-supercritical state is considerably higher than that in a normal gas state, and near the critical temperature, it is almost comparable to the density in a liquid state.
このような密度の増大が、溶質との化学的親和力を大き
くさせ、超臨界或いはそれに近いガスを分離媒体として
機能させるようになる。従って、温度一定の条件下では
、高圧になるにしたがって超臨界或いはそれに近いガス
の密度も大きくなるので、それだけ溶剤能力も増大して
いく、超臨界近傍の流体抽出においては、このように、
圧力が非常に高い場合には、温度が上昇するにしたがっ
て溶解度が大きくなっていくが、これは、温度、上昇に
ともなう超臨界或いはそれに近いガスの密度の低下より
も、被抽出物の蒸気圧の上昇の方が著しく、Ｍ気圧と昇
による超臨界或いはそれに近いガスへの溶解が大きく寄
与してくるからである。一方、これに対して、圧力がそ
れほど高くない場合には、温度の上昇と共に溶解度が減
少する。この場合は、被抽出物の蒸気圧上昇が僅かであ
るのに対し、超臨界或いはそれに近いガスの密度低下が
著しいからである。このように超臨界或いはそれに近い
流体の溶剤能力は著しい。Such an increase in density increases the chemical affinity with the solute, allowing the supercritical or nearly supercritical gas to function as a separation medium. Therefore, under conditions of constant temperature, as the pressure increases, the density of supercritical or near-supercritical gas also increases, and the solvent capacity increases accordingly. In fluid extraction near supercriticality,
When the pressure is very high, the solubility increases as the temperature increases, but this is due to the vapor pressure of the extracted material rather than the decrease in the density of the supercritical or near supercritical gas as the temperature increases. This is because the increase in M pressure is more remarkable, and the dissolution into supercritical or near-supercritical gas due to the increase in M atmospheric pressure makes a large contribution. On the other hand, if the pressure is not very high, the solubility decreases with increasing temperature. In this case, while the vapor pressure of the material to be extracted is only slightly increased, the density of the supercritical or nearly supercritical gas is significantly reduced. Thus, the solvent ability of supercritical or near supercritical fluids is remarkable.
超臨界近傍の流体抽出操作は１例えば、超臨界抽出のた
めに炭酸ガス（Ｃｏ、）を用いた場合、臨界点の近傍で
、比重（密度）が大きく変化するため、？Ｊ体抽出が非
常に効率的に運転できる。Fluid extraction operations near supercriticality 1For example, when carbon dioxide gas (Co) is used for supercritical extraction, the specific gravity (density) changes greatly near the critical point, so... J-body extraction can be operated very efficiently.
そのような流体として用いるに好適なガス或いは流イ本
としては、炭酸ガス、フロン（フレオン（商標））・ガ
ス等の次の表に示すものが用いられる。Gases or fluids suitable for use as such fluids include those shown in the following table, such as carbon dioxide gas and Freon (trademark) gas.
一般に超臨界流体抽出には、溶媒として第１表に挙げる
ような物質が使用されるが、温度、圧力の操作性１価格
、安全性の面から、主として二酸化炭素、フロンガス等
が用いられる６本発明によるセラミックス成形体用のバ
インダー組成物の脱脂にも、これらの物質を用いると、
８界温度が一般にバインダーとして用いられる物質の融
点や軟化点よりも低く脱脂中に成形体が変形しないので
都合がよい。In general, the substances listed in Table 1 are used as solvents for supercritical fluid extraction, but carbon dioxide, chlorofluorocarbon gas, etc. are mainly used from the viewpoint of operability of temperature and pressure, price, and safety. When these substances are also used for degreasing the binder composition for ceramic molded bodies according to the invention,
This is advantageous because the 8 boundary temperature is lower than the melting point or softening point of the substance generally used as a binder, so that the molded body does not deform during degreasing.
またバインダーの除去率は、セラミックス成形体と超臨
界流体の接触流量に依存するもので、以下に述べる実施
例においても流体の流量を太きくすることにより除去率
を大きくすることができる。Furthermore, the removal rate of the binder depends on the contact flow rate between the ceramic molded body and the supercritical fluid, and the removal rate can also be increased by increasing the flow rate of the fluid in the embodiments described below.
本発明による超臨界或いは加圧液化流体を用いて脱脂で
きるセラミ／り成形体用バイングー組成物は、従来通常
にバインダーとして用いられる高級アルフール（例えば
、オクタデカノール）、脂肪酸、脂肪酸塩、ワックス等
の超臨界或いは加圧液化流体によって抽出脱脂可能なバ
インダーに加えて、更に１ｍ出困難バインダー成分（成
分Ｂ）；可菫性付与成分（成分Ｃ）及び潤滑性付与成分
（成分Ｄ）を組合せて、セラミックス成形体の射出成形
性を向上浮せ、且つ、極めて短時間に超臨界脱脂を行な
っても成形体に欠陥の発生をし難Ｉｆ）ものにする。The bindu composition for ceramic/remolded objects that can be degreased using a supercritical or pressurized liquefied fluid according to the present invention can be prepared by using conventional binders such as higher alfur (e.g., octadecanol), fatty acids, fatty acid salts, waxes, etc. In addition to the binder that can be extracted and degreased with supercritical or pressurized liquefied fluid, a binder component that is difficult to extract by 1 m (component B); a violet-imparting component (component C) and a lubricity-imparting component (component D) are combined. , the injection moldability of the ceramic molded body is improved, and even if supercritical degreasing is performed in an extremely short time, defects are less likely to occur in the molded body.
次に本発明のバインダー組成物の各成分につし）て各々
説明する。Next, each component of the binder composition of the present invention will be explained individually.
本発明による溶出バインダー成分（成分Ａ）は、超臨界
或いは加圧液化流体により比較的に抽出容易なものであ
Ｄ、従来通常バインダーとしてよく用いられたバインダ
ー物質である。これにハ１例えば、高級アルコール（例
えば、オクタデカノー２し）、脂肪酸、詣肪酸塩（例え
ば、ステアリン酸マグネシウム、ステアリン酸アルミニ
ウム）、ワ／クスなどから１種以上選択して用いられる
。この溶出バインダー成分は、全バインダー量の約３０
〜９５１ｉ量％用いられる。The eluting binder component (component A) according to the present invention is relatively easily extracted by supercritical or pressurized liquefied fluid D, and is a binder material that has been commonly used as a conventional binder. For example, one or more of the following may be used: higher alcohols (eg, octadecanol), fatty acids, fatty acid salts (eg, magnesium stearate, aluminum stearate), waxes, and the like. This eluted binder component accounts for approximately 30% of the total binder amount.
~951i amount % is used.
本発明による溶出困難バインダー成分（成分Ｂ）は、超
臨界或いは加圧液化流体により比較的に抽出きれ難く、
同時にセラミックス粉末に良好な流動性を付’＋シて射
出成形を容易にするとともに成形体に強度を与え超臨界
或いは加圧液化流体による抽出脱脂中に発生する割れ、
変形等の欠陥を防止するバインダー成分である。この成
分は。The hard-to-elute binder component (component B) according to the present invention is relatively difficult to extract with supercritical or pressurized liquefied fluid,
At the same time, it imparts good fluidity to the ceramic powder, making injection molding easier and giving strength to the molded product, thereby preventing cracks that occur during extraction and degreasing with supercritical or pressurized liquefied fluids.
It is a binder component that prevents defects such as deformation. This ingredient is.
超臨界或いは加圧液化流体に溶解する温度、圧力におい
て、溶出バインダー成分よりも高く、即ち、電溶のもの
である。この成分は、熱町把性樹脂（例えば、ポリエチ
レン、ポリスチレン、ポリプロピレン、ＡＰＰ、ＥＶＡ
、アクリル系樹脂などがある）、ワックス、ポリエチレ
ングリコールなどから１種以上を選択して用いる。この
溶出困難バインダー成分は、全体バインダーの５〜７０
重量％の範囲である。The temperature and pressure at which it dissolves in a supercritical or pressurized liquefied fluid is higher than that of the eluting binder component, that is, it is electrolytic. This component is a thermoplastic resin (e.g., polyethylene, polystyrene, polypropylene, APP, EVA).
, acrylic resins, etc.), wax, polyethylene glycol, and the like. This difficult-to-elute binder component accounts for 5 to 70% of the total binder.
% by weight.
成分Ａと成゛分Ｂの関係は、添付の図に示す成分Ａ、Ｂ
の溶解度の傾向を示すグラフに明らかなように成分Ａは
比較的に溶解され易く超臨界流体に接すると容易に溶解
されてしまい、それに対して成分Ｂは成形体の中に残留
し、成形体強度を保つ役目をすることになる。The relationship between component A and component B is shown in the attached diagram.
As is clear from the graph showing the tendency of solubility of component A, component A is relatively easy to dissolve and is easily dissolved when it comes into contact with supercritical fluid, whereas component B remains in the molded product and It will serve to maintain strength.
可囚性付与成分（成分Ｃ）は、溶出困難バインダー成分
に柔軟性と流動性を与えるものである。The confinement imparting component (component C) imparts flexibility and fluidity to the hard-to-elute binder component.
この耳波性付与成分は１例えば、ジエチルフタレート（
ＤＥＰ）、ジブチルフタレート（ＤＢＰ）、ジオクチル
フタレート（ＤＯＰ）などのフタル酸エステルまたは脂
肪酸エステルから選択されるものである。この回目性付
与成分は、全バインダー量の０〜３０重量％の範囲であ
る。This ear wave-imparting component is 1, for example, diethyl phthalate (
DEP), dibutyl phthalate (DBP), dioctyl phthalate (DOP), and other phthalic acid esters or fatty acid esters. This runnability imparting component is in the range of 0 to 30% by weight of the total binder amount.
潤滑性付与成分（成分Ｄ）は、セラミック粉末の滑りを
良くする成分であＤ、また、この成分りは、圧力の伝達
性、離型性を向上させるものであり１例えば、ステアリ
ン酸、ステアリン酸の金属塩、ポリエチレンオキサイド
などから選択きれる。この潤滑性付与成分は、全バイン
ダー量００〜２５重量％の範囲含まれる。The lubricity-imparting component (component D) is a component that improves the slippage of ceramic powder. This component also improves pressure transmission properties and mold release properties. For example, stearic acid, stearin, etc. You can choose from acid metal salts, polyethylene oxide, etc. This lubricity-imparting component is included in the total binder amount in the range of 00 to 25% by weight.
超臨界或いはそれに近い流体に対する上記の溶出バイン
ダー成分（成分Ａ）及び溶出困難バインダー成分（成分
Ｂ）の溶解度は２図に示す如き特性をもち、溶出バイン
ダー成分は比較的に低温。The solubility of the above-mentioned eluted binder component (component A) and difficult-to-elute binder component (component B) in supercritical or near-supercritical fluids has the characteristics shown in Figure 2, and the eluted binder component has a relatively low temperature.
低圧力で溶解溶出きれ１ｍ出困難バインダー成分は比較
的に高温高圧まで溶解溶出されないものである。The binder component, which is difficult to dissolve and elute at low pressure for 1 m, does not dissolve and elute even at relatively high temperatures and pressures.
本発明によるバインダー組成物は、上記のような成分Ａ
、Ｂ、Ｃ，Ｄを組合せて用いるが、成分Ｃ及びＤは、成
分Ａ及びＢの付随的に加えて、流動性や離型性を向上さ
せて射出成形を容易ならし。The binder composition according to the invention comprises component A as described above.
, B, C, and D are used in combination. Components C and D, in addition to components A and B, improve fluidity and mold releasability to facilitate injection molding.
めるものであるから、セラミックス粉末に成分Ａ及びＢ
だけから、所望の性状が得られるものであるならば、成
分Ｃ及びＤを添加する必要はないものである。また、成
分Ａ、Ｂ、Ｃ，Ｄは各々複数の物質から構成することも
できる。Components A and B are added to the ceramic powder.
If the desired properties can be obtained from these alone, there is no need to add components C and D. Furthermore, each of the components A, B, C, and D can be composed of a plurality of substances.
本発明は、前記バインダー組成物において、成分Ａは、
３０〜９５１１Ｌ量％、成分Ｂは、５−７０重量％、成
分Ｃは、０〜３０重量％、成分りは。The present invention provides that in the binder composition, component A is
Component B is 5-70% by weight, Component C is 0-30% by weight.
０〜２５ｆ［量％である範囲が好適である。A range of 0 to 25f [amount%] is suitable.
成分Ａは、３０ｆｉ量％未満では抽出されるバインダー
量が少なく、残ａしているバインダー（主として成分Ｂ
）の影響で欠陥が生じるので、そのまま焼結することが
困難になＤ、更に、成分Ａが９５ｉｉ量％を超えると、
成分Ａは一般に低融点で強度も低いので形を保持するこ
とが困難になる。When component A is less than 30fi amount%, the amount of binder extracted is small, and the remaining binder (mainly component B
), which makes it difficult to sinter as is.Furthermore, if component A exceeds 95% by mass,
Component A generally has a low melting point and low strength, making it difficult to maintain its shape.
成分Ｂは、５重量％未満ではセラミックス粉末に良好な
流動性を与えることができず、射出成形が困難となると
ともに、成形体の強度も充分でなくなる。また、成分Ｂ
が７０重量％を超えると成分Ａの抽出を妨げる。If component B is less than 5% by weight, it will not be possible to impart good fluidity to the ceramic powder, making injection molding difficult and resulting in insufficient strength of the molded product. In addition, component B
If it exceeds 70% by weight, extraction of component A will be hindered.
ｆｆ１ｌＡは、高級アルフール、ワックス、脂肪酸及び
脂肪酸塩から選択きれる１〜３極のものにでき、また、
成分Ｂは、ポリプロピレン、ポリスチレン、ポリエチレ
ン、エチレン酢酸ビニル共ｈ？体、ポリメタクリル酸エ
ステル又はポリアクリル酸エステルなどのアクリル系樹
脂、ワックス、アタクチックポルプロピレン、ポリエチ
レングリフールから選択される１種以上で構成されるも
のを利用できる。ff1lA can be one to three poles selected from higher alfur, wax, fatty acid, and fatty acid salt, and
Component B includes polypropylene, polystyrene, polyethylene, and ethylene vinyl acetate. It is possible to use one or more selected from the group consisting of acrylic resins such as polymethacrylic acid ester and polyacrylic ester, wax, atactic porpropylene, and polyethylene glyfur.
次に９本発明によるバインダー組成物を用いたセラミッ
クス成形体の処理法を述べる。Next, a method for treating a ceramic molded body using the binder composition according to the present invention will be described.
通常のセラミックス粉末（窒化珪素、炭化珪素、アルミ
ナ、ジルコニアなど）に上記のように成分Ａ、Ｂ、Ｃ及
びＤを含む本発明のバインダー組成物を５〜３０重量％
加えて加熱しながら充分に混合する。セラミックス粉末
とバインダー組成物の混合物は９本発明による成分Ｂ、
Ｃ及びＤの作用により良好な流動性を有するものとなり
１通常の射出成形機で容易に成形することができる。5 to 30% by weight of the binder composition of the present invention containing components A, B, C and D as described above is added to ordinary ceramic powder (silicon nitride, silicon carbide, alumina, zirconia, etc.).
Add and mix thoroughly while heating. The mixture of ceramic powder and binder composition comprises 9 components B according to the invention,
Due to the effects of C and D, it has good fluidity and can be easily molded using a normal injection molding machine.
次に、この成形体を二酸化炭素、フロンガスなどの超臨
界或いは加圧液化流体に１〜３時間接触させて抽出脱脂
を行なう、超臨界或いは加圧液化流体は成形体の粒子間
隙を通ってバインダーを抽出するので成分Ａは極めて短
時間に抜けてしまうがその際成形体自体の強度を成分Ｂ
が担うために割れ等を防ぐことができる。また成分Ｂの
軟化点臨界点よりも高ければ超臨界状態での抽出脱脂中
の変形を防ぐことができる０次に、温度又は圧力を上げ
れば成分Ｂも同様に短時間で抽出されるが、成分Ａが既
に脱脂され、抜は道が存在しているためにもはや割れが
発生することはない、また、成分Ｂが残存している状態
で超臨界或いは加圧液化流体による抽出脱脂を完了し、
そのまま通常の焼成を行なっても成分Ｂは成分Ａの抜は
道を通って成形体から容易にガス化揮散し１割れや膨れ
等の欠陥が発生することはない、成分Ｃ，Ｄも同様な理
由から超臨界或いは加圧液化流体で抽出脱脂できなくと
もよいが、抽出脱脂可能のものが好適である。Next, this molded body is brought into contact with a supercritical or pressurized liquefied fluid such as carbon dioxide or chlorofluorocarbon gas for 1 to 3 hours to perform extraction and degreasing. Component A is extracted in a very short time, but at that time, the strength of the molded body itself is reduced by component B.
This helps prevent cracks, etc. In addition, if the softening point of component B is higher than the critical point, it can prevent deformation during extraction and degreasing in a supercritical state.Next, if the temperature or pressure is increased, component B will be extracted in a short time as well. Component A has already been degreased and there is a way to remove it, so cracks no longer occur, and extraction and degreasing using supercritical or pressurized liquefied fluid is completed while component B remains. ,
Even if normal firing is performed as it is, component B passes through the path of component A and is easily gasified and volatilized from the molded product, and defects such as cracks and blisters do not occur.Components C and D are also similar. For some reason, it is not necessary to perform extraction degreasing with supercritical or pressurized liquefied fluid, but it is preferable to use extractive degreasing with a supercritical or pressurized liquefied fluid.
加熱され超臨界状態で溶剤となる流体は、所定の圧力に
加圧され、被抽出物のグリーンセラミックス成形体中を
流れ９通過しながら、被抽出物よりバインダー組成物を
溶解していく。The fluid that is heated and becomes a solvent in a supercritical state is pressurized to a predetermined pressure, and as it flows through the green ceramic molded object to be extracted, it dissolves the binder composition from the extracted object.
臨界温度は一般にバインダー物質として用いられるもの
の融点や軟化点よりも低く、脱脂中に成形体に変形を与
えないものが好適である。また。It is preferable that the critical temperature is lower than the melting point or softening point of the binder material that is generally used and that does not deform the molded product during degreasing. Also.
バインダー除去率はセラミックス成形体と超臨界流体の
接触流量に依存するものであるので、流体の流量を大き
くすることにより除去率を向上させることができる。Since the binder removal rate depends on the contact flow rate between the ceramic molded body and the supercritical fluid, the removal rate can be improved by increasing the flow rate of the fluid.
本発明のバインダー組成物は、窒化珪素、炭化珪素、ア
ルミナ、ジルフニ７等エンジニアリングセラミックスの
射出成形の他に１子材料、磁性材料、金属粉末、超硬合
金、黒鉛粉末などの粉末の射出成形、脱脂にすべて応用
できるものである。The binder composition of the present invention can be used for injection molding of engineering ceramics such as silicon nitride, silicon carbide, alumina, and Zilfuni 7, as well as for injection molding of powders such as monolithic materials, magnetic materials, metal powders, cemented carbide, and graphite powder. It can be applied to all types of degreasing.
また、粉末の射出成形だけでなく押出し成形、ブレス成
形品の脱脂にも応用できるものである。従来の加熱脱脂
では粉末の物性が変化してしまうようなものに対しても
脱脂ができ、その成形体の強度を保持できるものである
。Moreover, it can be applied not only to powder injection molding but also to extrusion molding and degreasing of press molded products. It is possible to degrease powders that would change the physical properties of the powder using conventional thermal degreasing, and the strength of the molded product can be maintained.
［実施例コ
次に１本発明のバインダー組成物の具体例を以下の実施
例で、更に具体的に説明するが１本発明は、その要旨を
変えない限り次の実施例に限定きれるものではない。[Example] Next, specific examples of the binder composition of the present invention will be explained in more detail in the following Examples, but the present invention is not limited to the following Examples unless the gist thereof is changed. do not have.
［実施例１コ 成分Ａとしてオクタデカノール５５重量％。[Example 1 55% by weight of octadecanol as component A.
成分Ｂとしてエチレン酢酸ビニル共重合体１８重量％及
びワックス１５重量％、成分Ｃとしてジブチルフタレー
ト３重量％、成分りとしてステアリン酸９３ｉｔ％から
なるバインダー混合物をアルミナ粉末（平均粒径０．６
μｍ）に対して１６重量％加えて加熱混練した後ペレッ
ト状とし、射出成形機にてＩＱＸ２０Ｘ３０ｍ／ｍのブ
ロック状成形体を得た１次にこれを超臨界抽出脱脂装置
を用いて温度６０℃、圧力２００ ｋｇｆ／ｃｍ’のｃ
ｏ、超臨昇流体に１．５時間接触移せたところバインダ
ーの除去率７８％で１割れ、膨れ、変形等の欠陥のない
脱脂体が得られた。続いて、この脱脂体を１８０℃／ｈ
で昇温し、１６００℃で２時間保持し焼結させた。この
焼結体には割れや膨れ等の欠陥は認められず、極めて良
好な結果であった。A binder mixture consisting of 18% by weight of ethylene vinyl acetate copolymer and 15% by weight of wax as component B, 3% by weight of dibutyl phthalate as component C, and 93it% of stearic acid as component was mixed with alumina powder (average particle size 0.6).
μm), heat-kneaded and pelletized, and used an injection molding machine to obtain a block-shaped molded product of IQX20x30m/m. , pressure 200 kgf/cm'c
o. After being brought into contact with a supercritical fluid for 1.5 hours, a degreased body with a binder removal rate of 78% and no defects such as cracks, blisters, or deformations was obtained. Subsequently, this degreased body was heated at 180°C/h.
The temperature was raised at 1,600°C for 2 hours to sinter. No defects such as cracks or blisters were observed in this sintered body, and the results were extremely good.
［実施例２］ 成分Ａとしてオクタデカノール６５！１１％。[Example 2] Octadecanol as component A: 65!11%.
成分Ｂとしてポリエチレン２９重量％、成分Ｃとしてジ
ブチルフタレート６重量％からなる混合物を、アルミナ
粉末（平均粒径０．６μｍ）に対して１６重量％添加し
、実施例１と同一条件で混練成形し、ＣＯ３超臨界流体
により抽出脱脂を行なった。バインダーの除去率６５％
で２割れ、膨れ、変形等の欠陥のない脱脂体が得られた
。ｌＲいて、この脱脂体を１５０℃／ｈで昇温し、１６
００℃で２時間焼結したところ、焼結体には割れや膨れ
等の欠陥は認めらなかった。A mixture consisting of 29% by weight of polyethylene as component B and 6% by weight of dibutyl phthalate as component C was added at 16% by weight to alumina powder (average particle size 0.6 μm), and kneaded and molded under the same conditions as Example 1. Extractive degreasing was performed using CO3 supercritical fluid. Binder removal rate 65%
A degreased body free of defects such as cracking, blistering, and deformation was obtained. The temperature of this defatted body was raised at 150°C/h under 1R, and the temperature was increased to 16
When sintered at 00°C for 2 hours, no defects such as cracks or blisters were observed in the sintered body.
［実施例３コ 成分Ａとしてパラフィンワックス６３重量％。[Example 3 63% by weight of paraffin wax as component A.
成分Ｂとしてポリメタクリル酸エステル２５１ｉ量％、
成分Ｃとしてジプチルフタシー６４重量％成分りとして
ステアリン酸８重量％からなる混合物を、窒化珪素粉末
（助剤としてＡ Ｉｔｏ−、ＹｒＯｌを含む）に対し、
２１重量％添加し、実施例１と同一条件で混練成形脱脂
を行なった。バインダーの除去率７１％で、脱脂体に欠
陥は認められなかった。続いて、この脱脂体を窒素気流
中で１８０℃／ｈで１１００℃まで昇温し、その後窒業
圧力９ｋｇ／Ｃｍ’、 １８００℃で２時間焼結したと
ころ、焼結体には欠陥は認めらなかった。As component B, polymethacrylic acid ester 251i amount%,
A mixture consisting of 64% by weight of diptylphtasy as component C and 8% by weight of stearic acid as component was added to silicon nitride powder (containing A Ito- and YrOl as auxiliaries).
21% by weight was added, and kneading, molding, and degreasing were performed under the same conditions as in Example 1. The binder removal rate was 71%, and no defects were observed in the degreased body. Subsequently, this degreased body was heated to 1100°C at a rate of 180°C/h in a nitrogen stream, and then sintered at 1800°C for 2 hours at a nitrogen pressure of 9 kg/cm', and no defects were observed in the sintered body. There wasn't.
［発明の効果］
本発明の超臨界抽出超臨界流体抽出に遇するセラミック
ス用バインダー組成物は、超臨界或いは加圧液化流体に
より比較的に抽出容易な溶出バインダー成分（成分Ａ）
；超臨界或いは加圧液化流体により比較的に抽出され難
いが成形体に強度を与える溶出困難バインダー成分（成
分Ｂ）；成分Ｂに柔軟性と流動性を与える可輩性＋＝ｉ
与成分（成分Ｃ）及びセラミ／り粉末の滑りを良くする
ｆ４．ｆ性付与成分（成分Ｄ）を組合せたセラミックス
用バインダー組成物であＤ、それによＤ、第１に。[Effects of the Invention] The binder composition for ceramics that is subjected to supercritical extraction and supercritical fluid extraction of the present invention has an eluted binder component (component A) that is relatively easily extracted by supercritical or pressurized liquefied fluid.
; Difficult to elute binder component (component B) that is relatively difficult to extract with supercritical or pressurized liquefied fluid but gives strength to the molded body; permanence +=i that gives flexibility and fluidity to component B;
f4. Improving the slippage of the component (component C) and the ceramic powder. First, there is a binder composition for ceramics which is a combination of an f-characteristic imparting component (component D).
従来の高級アルフール、脂肪酸等を単独でバインダーと
したものに比べ、セラミックス粉末に良好な流動性を与
えるために射出成形が容易になり。Compared to conventional binders made of high-grade alfur, fatty acids, etc., injection molding is easier because it gives ceramic powder better fluidity.
成形体の強度も充分に保持でき、超臨界或いは液化流体
で抽出脱脂を行なっても割れや変形、膨れ等の欠陥が少
ないものが得られること、第２に。Second, the molded product can maintain sufficient strength and has few defects such as cracking, deformation, and blistering even when extracted and degreased with supercritical or liquefied fluid.
従来の加熱脱脂処理と比べ、脱脂時間奢大幅に縮小でき
、従来の通常のバインダーと比べても脱脂時間が短縮で
き、また、脱７指時間を短縮し王も欠陥が生し難いもの
にできること、第３に、従来の加熱脱脂処理と比較し、
脱脂温度を低くでき。Compared to conventional heat degreasing processing, the degreasing time can be significantly reduced, and compared to conventional ordinary binders, the degreasing time can also be shortened, and the degreasing time can be shortened, making it difficult for defects to occur. , Thirdly, compared to conventional heat degreasing treatment,
The degreasing temperature can be lowered.
従って、バインダーがガス化することを防止でき、バイ
ンダーの膨張や移動による内部応力の発生が殆どなく、
そのために１割れ、膨れ、変形等の欠陥が生しることな
いこと、第４に９以上の点から、複雑な形状のセラミ／
ラス成形体や、肉厚の成形体に対しても超臨界流体抽出
法を適用できるようになることなどの技術的効果が得ら
れた。Therefore, the binder can be prevented from gasifying, and there is almost no internal stress caused by expansion or movement of the binder.
Therefore, defects such as cracking, blistering, deformation, etc. do not occur.Fourthly, from the point of 9 or above, ceramics with complex shapes /
Technical effects such as the ability to apply the supercritical fluid extraction method to lath molded bodies and thick-walled molded bodies were obtained.
図は１本発明のバインダー組成物に用いられる成分Ａ、
Ｂの溶解度の傾向を示すグラフである。
特許出願人 住友重機械工業株式会社復代理人 弁
理士 倉 持 裕
手続補正書（方幻
昭和６１年８月２）日
特許庁長官 黒 １）明 雄 殿
１、事件の表示 昭和６１年特許願第１２１１６４号２
、発明の名称
セラミック成形体脱脂用バインダー組成物３、補正をす
る者
事件との関係 特許出願人
住所 東京都千代田区大手町二丁目２番１号名称 （ｚ
ｔｏ＞ｆＮ譬讐賀νｒ讐り式会社ゴウ ダ
シゲル
代表者 合 １） 茂
４、代理人
東京都千代田区大手町二丁目２番１号
住友ｍｓ械工業株式会社内
（７４９０）弁理士 カロ 藤 正 信（外１名）５、
復代理人
〒１０２東京都千代田区一番町１１の１６、補正命令の
日付（発送日）The figure shows 1 component A used in the binder composition of the present invention,
It is a graph showing the solubility trend of B. Patent applicant Sumitomo Heavy Industries, Ltd. sub-agent Patent attorney Hiroshi Kuramochi Procedural amendment (August 2, 1986) Commissioner of the Patent Office Kuro 1) Akio Yu 1, Indication of case Patent application filed in 1988 No. 121164 2
, Title of the invention Binder composition for degreasing ceramic molded bodies 3, Relationship to the case of the person making the amendment Patent applicant address 2-2-1 Otemachi, Chiyoda-ku, Tokyo Name (z
to>fN revenge ga νr revenge company gouda
Shigeru Representative: 1) Shigeru 4, Agent: Sumitomo MS Machinery Co., Ltd., 2-2-1 Otemachi, Chiyoda-ku, Tokyo (7490), Patent Attorney, Caro Masanobu Fuji (1 other person) 5,
Sub-Agent Address: 11-16 Ichibancho, Chiyoda-ku, Tokyo 102 Date of amendment order (shipment date)
Claims (4)
ラミック成形体用バインダー組成物において、 Ａ、超臨界或いは加圧液化流体により比較的に抽出容易
な溶出バインダー成分（成分Ａ）；Ｂ、超臨界或いは加
圧液化流体により比較的に抽出され難いが成形体に強度
を与える溶出困難バインダー成分（成分Ｂ）； Ｃ、成分Ｂに柔軟性と流動性を与える可塑性付与成分（
成分Ｃ）及び Ｄ、セラミック粉末の滑りを良くする潤滑性付与成分（
成分Ｄ）を 組み合わせたことを特徴とする前記バインダー組成物。(1) In a binder composition for a ceramic molded body that can be degreased using a supercritical or pressurized liquefied fluid, A, an eluted binder component (component A) that is relatively easily extracted by a supercritical or pressurized liquefied fluid; B. A hard-to-elute binder component (component B) that is relatively difficult to extract with supercritical or pressurized liquefied fluid but gives strength to the molded product; C. A plasticity-imparting component that gives flexibility and fluidity to component B (component B);
Components C) and D, lubricating components that improve the slippage of ceramic powder (
The above-mentioned binder composition, characterized in that it is combined with component D).
て、成分Ａは、３０〜９５重量％、成分Ｂは、５〜７０
重量％、成分Ｃは、０〜３０重量％、成分Ｄは、０〜２
５重量％である範囲の前記のバインダー組成物。(2) In the binder composition according to claim 1, component A is 30 to 95% by weight, and component B is 5 to 70% by weight.
% by weight, component C is 0-30% by weight, component D is 0-2% by weight.
The above binder composition in a range of 5% by weight.
び脂肪酸塩から選択される１〜３種のものである特許請
求の範囲第１項のバインダー組成物。(3) The binder composition according to claim 1, wherein component A is one to three selected from higher alcohols, waxes, fatty acids, and fatty acid salts.
スチレン、エチレン酢酸ビニル共重合体、ポリメタクリ
ル酸エステル又はポリアクリル酸エステルなどのアクリ
ル系樹脂、ワックス、アタクチックポルプロピレン及び
ポリエチレングリコールから選択される１種以上で構成
されるものである特許請求の範囲第１項のバインダー組
成物。(4) Component B is one type selected from polypropylene, polyethylene, polystyrene, ethylene vinyl acetate copolymer, acrylic resin such as polymethacrylate or polyacrylate, wax, atactic porpropylene, and polyethylene glycol. The binder composition according to claim 1, which is composed of the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61121164A JPS62278160A (en) | 1986-05-28 | 1986-05-28 | Binder composition for dewaxing ceramic formed body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61121164A JPS62278160A (en) | 1986-05-28 | 1986-05-28 | Binder composition for dewaxing ceramic formed body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62278160A true JPS62278160A (en) | 1987-12-03 |
| JPH0461826B2 JPH0461826B2 (en) | 1992-10-02 |
Family
ID=14804426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61121164A Granted JPS62278160A (en) | 1986-05-28 | 1986-05-28 | Binder composition for dewaxing ceramic formed body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62278160A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0465940A2 (en) | 1990-07-07 | 1992-01-15 | BASF Aktiengesellschaft | Thermoplastic masses for preparing metallic mouldings |
| BE1007034A3 (en) * | 1993-04-28 | 1995-02-21 | Vito | Binding composition for powdered injection moulding |
-
1986
- 1986-05-28 JP JP61121164A patent/JPS62278160A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0465940A2 (en) | 1990-07-07 | 1992-01-15 | BASF Aktiengesellschaft | Thermoplastic masses for preparing metallic mouldings |
| BE1007034A3 (en) * | 1993-04-28 | 1995-02-21 | Vito | Binding composition for powdered injection moulding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0461826B2 (en) | 1992-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0311407B1 (en) | Process for fabricating parts for particulate material | |
| US5641920A (en) | Powder and binder systems for use in powder molding | |
| US4906424A (en) | Reaction injection molding of ceramic or metallic greenbodies | |
| US4144207A (en) | Composition and process for injection molding ceramic materials | |
| US4233256A (en) | Process for injection molding sinterable carbide ceramic materials | |
| KR930002522B1 (en) | Process for removal of oil of injection molding | |
| JPH0686608B2 (en) | Method for producing iron sintered body by metal powder injection molding | |
| CA2413404C (en) | Aqueous injection molding binder composition and molding process | |
| EP0296552A1 (en) | Metal binder and molding composition | |
| KR102277881B1 (en) | Binder for injection moulding compositions | |
| WO1988007505A1 (en) | Polymerizable binder solution for low viscosity, highly loaded particulate slurries and methods for making green articles therefrom | |
| EP0688746B1 (en) | Method of manufacturing molded articles from metallic or ceramic powdered particles and binder system suitable for use therein | |
| JPS62278160A (en) | Binder composition for dewaxing ceramic formed body | |
| US5746960A (en) | Method of manufacturing powder injection molded part | |
| JPH0313503A (en) | Method for degreasing molding for powder metallurgy, binder and supercritical fluid | |
| JPS59121150A (en) | Injection molding material | |
| JPS58223662A (en) | Injection molding material | |
| JPS6311562A (en) | Material for injection forming | |
| US5015294A (en) | Composition suitable for injection molding of metal alloy, or metal carbide powders | |
| WO1994020242A1 (en) | Process for manufacturing powder injection molded parts | |
| JPS5899171A (en) | Non-oxide ceramic composition and manufacture of non-oxide ceramic sintered body therefrom | |
| JP3165165B2 (en) | Extraction degreasing method using methanol | |
| JPS62241863A (en) | Injection forming material | |
| JPH0689369B2 (en) | Binder composition for injection molding | |
| JP2843189B2 (en) | Binders and compounds for metal powder injection molding |