JPH0696454B2 - Cobalt Bull - based method of manufacturing a pigment - Google Patents

Cobalt Bull - based method of manufacturing a pigment

Info

Publication number
JPH0696454B2
JPH0696454B2 JP15133287A JP15133287A JPH0696454B2 JP H0696454 B2 JPH0696454 B2 JP H0696454B2 JP 15133287 A JP15133287 A JP 15133287A JP 15133287 A JP15133287 A JP 15133287A JP H0696454 B2 JPH0696454 B2 JP H0696454B2
Authority
JP
Japan
Prior art keywords
cobalt
pigment
cobalt blue
aluminum
producing
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 - Fee Related
Application number
JP15133287A
Other languages
Japanese (ja)
Other versions
JPS63319216A (en
Inventor
徹 川上
Original Assignee
大日精化工業株式会社
浮間合成株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 大日精化工業株式会社, 浮間合成株式会社 filed Critical 大日精化工業株式会社
Priority to JP15133287A priority Critical patent/JPH0696454B2/en
Publication of JPS63319216A publication Critical patent/JPS63319216A/en
Publication of JPH0696454B2 publication Critical patent/JPH0696454B2/en
Anticipated expiration legal-status Critical
Application status is Expired - Fee Related legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; PREPARATION OF CARBON BLACK; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/40Compounds of aluminium
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G51/00Compounds of cobalt
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/60Optical properties, e.g. expressed in CIELAB-values

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明はコバルトブルー系顔料の製造方法に関し、更に詳しくは赤味の冴えた色調を有し、分散性の良好なコバルトブルー系顔料の製造方法に関する。 BACKGROUND OF THE INVENTION (FIELD OF THE INVENTION) The present invention relates to a method of manufacturing a cobalt blue pigment, more particularly having a color tone dull reddish, manufacture of dispersible good cobalt blue pigment a method for.

(従来の技術) コバルトブルー系顔料は耐熱性に優れた無機顔料として広く知られ、例えば、塗料や合成樹脂の着色剤、蛍光体更には窯業用着色剤等として幅広く使用されている。 (Prior Art) cobalt blue pigment is widely known as an inorganic pigment having excellent heat resistance, for example, colorants paints and synthetic resins, and further phosphors are widely used as ceramic colorants for the like.

上記コバルトブルー系顔料はアルミニウムの酸化物とコバルトの酸化物を主体とするスピネル型化合物であり、 The cobalt blue pigment is a spinel type compound as a main component an oxide of oxide and cobalt aluminum,
必要に応じてクロムやマグネシウム等の他の金属の酸化物も含み得るものである。 Oxides of other metals such as chromium or magnesium as necessary are those that may contain.

上記コバルトブルー系顔料の製造は主として乾式方法及び湿式方法により製造されている。 Production of the cobalt blue pigment are mainly produced by a dry method and a wet method.

(発明が解決しようとしている問題点) 乾式方法は酸化コバルトと酸化アルミニウムとを混合し、フラックスを併存させて高温で焼成し、次いで、焼結した粒子を強力な粉砕機によって粉砕し顔料化する方法であるが、粉砕に大きなエネルギーを要するという欠点と、得られる顔料に色のくすみが現われ、鮮明な色調が得られないという問題がある。 (INVENTION it is trying to Problem solving) dry method is mixing the cobalt oxide aluminum oxide, fired at a high temperature by Coexistence of flux, then pigmented crushed by a strong crusher sintered particles is a method, a disadvantage of requiring large energy milling, appear to be obtained pigment color dull, there is a problem that a clear color tone can be obtained.

一方、湿式方法は、アルミニウム塩とコバルト塩の混合溶液をアルカリで中和して両者を水酸化物として共沈させ、これを焼成して発色させる方法であるが、沈澱する水酸化物の粒子径は著しく小さいこと、及びアルミニウムの水酸化物がゲル状沈澱となるために、共沈物の含水率が高く、その乾燥に大きなエネルギーを要するという問題があり、更に含水物を乾燥するときに粒子が凝集して固い塊りとなり、焼成すると更に固い粒子となるため、その粉砕が困難であるという問題がある。 On the other hand, the wet method, a mixed solution of aluminum salt and a cobalt salt is neutralized with an alkali coprecipitated both as hydroxide, is a method of coloring by firing the particles of hydroxide precipitates it diameter significantly smaller, and to a hydroxide of aluminum is gelatinous precipitate, high water content of the coprecipitate, there is a problem that requires a large energy to the drying, when further drying the hydrate becomes hard lump particles aggregate, since the more rigid particles and baked, there is a problem that crushing is difficult.

更に、いずれの方法によっても得られる顔料は緑味の色調を有し、赤味の色調が要求される用途には使用できないという問題がある。 Further, pigments can be obtained by any of the methods has the color tone of greenish, for applications where reddish color is required it is impossible to use.

従って、焼成、乾燥及び粉砕等の消費エネルギーが少なくて済み、且つ鮮明で赤味の冴えた色調を有するコバルトブルー系顔料が要望されている。 Accordingly, calcination, requires less energy consumption, such as drying and milling, cobalt blue pigment is demanded and having a clear and a reddish dull tones.

(問題点を解決するための手段) 本発明者らは上述の要望に応えるべく鋭意研究の結果、 (Means for Solving the Problems) The present inventors have conducted extensive research results to meet the above demands,
アルミニウムの水酸化物とコバルトの水酸化物との共沈に、特定の沈澱剤を用いることにより、上記の要望に応えることができることを見い出し本発明を完成した。 The coprecipitation of hydroxides of aluminum hydroxide and cobalt, by using a specific precipitant, and completed the present invention found that it is possible to meet the above requirements.

すなわち、本発明は、アルミニウム塩、コバルト塩及び尿素を水中に溶解して混合液とし、これを加熱することによってアルミニウムの水酸化物とコバルトの水酸化物とを共沈させ、共沈物を瀘過及び水洗後焼成することを特徴とするコバルトブルー系顔料の製造方法である。 That is, the present invention is an aluminum salt, a cobalt salt and urea are dissolved in water and mixed solution are coprecipitated and hydroxides of aluminum hydroxide and cobalt by heating this, the coprecipitate cobalt blue system manufacturing method of the pigment and firing after filtration and washing.

(作用) 水酸化物の沈澱剤として尿素を用いることによって、アルミニウムの水酸化物とコバルトの水酸化物との共沈が均一に行われ、共沈物の脱水が容易であり、且つ比較的低温の焼成でも赤味で鮮明なコバルトブルー系顔料が得られ、該コバルトブルー系顔料はソフトな粒子であるので粉砕が容易である。 By using urea as precipitation agent (action) hydroxide, co-precipitation of the hydroxides of aluminum hydroxide and cobalt is uniformly performed, it is easy to dehydration of coprecipitate, and relatively vivid cobalt blue pigment was obtained with reddish even at a low temperature of firing, the cobalt blue pigment is is easy grinding because it is soft particles.

(好ましい実施態様) 次に本発明を本発明の好ましい実施態様を挙げて更に詳しく説明する。 (Preferred embodiment) then the present invention will be described further by way of preferred embodiments of the present invention in detail.

本発明で使用するアルミニウム塩及びコバルト塩とはアルミニウム又はコバルトの硫酸塩、硝酸塩、塩化物、酢酸塩等従来のコバルトブルー系顔料の製造に使用されている塩はいずれも使用することができる。 Aluminum salts and sulfuric acid salts of aluminum or cobalt and cobalt salt to be used in the present invention, nitrates, chlorides, salts are used in the production of conventional cobalt blue pigment acetate and the like can be used either. 又、上記の必須成分に加えてクロムやマグネシウム等の如き他の金属塩も少量併用可能であり、特にアルミニウム1モルに対し、0.3モル以下の少量のクロム塩を併用することによって、得られる顔料の色調を緑味に優れたものとすることができる。 Also, other metal salts such as such as chromium or magnesium in addition to the above essential components is possible in combination a small amount, relative to particular aluminum 1 mol, by combining a small amount of chromium salts of 0.3 mol or less, the resulting pigment it can be provided with excellent color tone to greenish.

上記においてアルミニウム塩とコバルト塩の使用量はモル比でCo/Al=1/2乃至1/5程度の範囲が適当である。 The amount of aluminum salt and a cobalt salt molar ratio Co / Al = 1/2 to 1/5 of the range are suitable in the above.

以上の如きアルミニウム塩、コバルト塩又は他の金属塩を水に溶解して混合塩水溶液を形成するが、その濃度は上記の如き範囲のモル比で全体として約20重量%(硝酸アルミニウム基準)以下程度の濃度とするのがよい。 Above-described aluminum salts, cobalt salts or other metal salts to form a mixed salt solution are dissolved in water, the concentration is about 20 wt% as a whole in a molar ratio in the range, such as the (aluminum nitrate basis) or less it is preferable to the degree of concentration.

上記混合塩溶液から混合水酸化物を析出させるために使用する沈澱剤として尿素を使用する。 Urea is used as the precipitating agent used to precipitate the mixed hydroxide from the mixed salt solution.

本発明者の詳細な研究によれば、前記混合塩水溶液に尿素を溶解することによって、常温付近の温度では特別の変化を生じないが、これを攪拌しながら昇温すると、例えば、60℃以上、好ましくは70℃以上の温度に加熱すると、アルミニウムの水酸化物とコバルトの水酸化物は均一に沈澱し、且つ沈澱物の粒子は従来のアルカリ沈澱法によるものと異なり、ある程度の大きさを有し、瀘過等による脱水が非常に容易となり、又、脱水物は乾燥時に固く凝集することがなく、その後に焼成処理を施しても殆ど粉砕を必要としない程度のソフトなコバルトブルー系顔料が容易に得られることを見い出したものである。 According to detailed studies of the present inventors, by dissolving urea in the aqueous solution of mixed salts, but no special change in the temperature around the room temperature, which upon heating with stirring, for example, 60 ° C. or higher , and preferably heated to a temperature above 70 ° C., hydroxides of aluminum hydroxide and cobalt is uniformly precipitated, and the particles of the precipitate differs from that of the conventional alkaline precipitation method, a certain degree of size a dehydration becomes very easy by such filtration, also dehydrate without be agglomerated tightly during drying, then soft so as not to require a little grinding be subjected to a baking process in a cobalt blue pigment in which it found that can be easily obtained.

又、水酸化物の析出時には、全成分が均一に溶解した状態から水酸化物の析出が始まるので、析出物は十分に均一な混合物であり、焼成時に何らのフラックスを用いる必要もないものであった。 Furthermore, when the hydroxide precipitation, because of the hydroxide from the state in which all the components are uniformly dissolved precipitation begins, precipitates are sufficiently homogeneous mixture, but there is no need to use any flux during firing there were.

以上の如き沈澱剤である尿素は上記金属塩全体に対し、 Urea is a more such precipitants whereas overall the metal salt,
金属塩1当量につき約1.0乃至2.0モルの使用割合が好適であり、使用モル比が上記範囲未満であると金属水酸化物の沈澱が不十分となり、一方、上記範囲を越える使用割合では不要な尿素を用いることになり不経済である。 The ratio of about 1.0 to 2.0 mole per metal salt 1 equivalent are preferred, precipitation of metal hydroxide and using the molar ratio is less than the above range is insufficient, whereas, unnecessary use proportion exceeds the above range it is uneconomical to use urea.

更に本発明によれば、上記の水酸化物の共沈工程において、系中に硫酸イオンを共存させることにより、共沈する水酸化物の粒子径のコントロールができ、共沈物の粒子径を大きくして脱水、乾燥が容易となり、更に焼成時にも粒子が凝集しないので、焼成後殆ど粉砕を要しない程ソフトな製品が得られることを見い出した。 Further according to the present invention, in a co-precipitation process of the above hydroxide, in the coexistence of the sulfate ions in the system can control the particle size of the hydroxide co-precipitation, the particle size of the coprecipitate increased to dehydration, drying is facilitated, since no agglomerated particles also have at calcined found that soft products as little required crushing after firing is obtained.

硫酸イオンの使用量を増す程大きな粒子径の共沈物が得られるが、好ましい使用割合は水溶液濃度として0.05M/ Coprecipitate is obtained a larger particle size enough to increase the amount of sulfate ion, the preferred proportion is 0.05M as an aqueous solution concentration /
l乃至0.2M/l程度である。 l or is about 0.2M / l.

以上の如き本発明の方法は各成分を水中に溶解し、溶解が完了したら全体を攪拌しながら60℃以上、好ましくは The method of present invention as described above is to dissolve the components in water, dissolved with stirring 60 ° C. or more entire When finished, preferably
70乃至100℃の温度で約3乃至10時間程度攪拌することによって水酸化物の共沈が完了する。 Co-precipitation of the hydroxide by stirring for about 3 to about 10 hours at a temperature of 70 to 100 ° C. is completed. 水酸化物の共沈の完了は反応液の1部を瀘過し、その瀘液にアルカリを加えて、瀘液が着色しないことを確認することによって行うことができる。 Complete coprecipitation of hydroxides was filtered a portion of the reaction solution, by adding an alkali to the filtrate, it can be done by making sure that the filtrate is not colored.

次に析出した共沈物を瀘過することによって含水率が約 Moisture content of about by filtration coprecipitate was then precipitated
40乃至60%程度となり、これを約100乃至120℃程度の温度で乾燥し、これを酸化性雰囲気下で約900乃至1,200℃ Becomes 40 to about 60%, which was dried at about 100 to about 120 ° C. temperature, about 900 to 1,200 ° C. in an oxidizing atmosphere so
の温度で約30乃至90分間焼成することにより発色し、本発明のコバルトブルー系顔料が得られる。 Colored by firing at a temperature of about 30 to 90 minutes, cobalt blue pigment of the present invention is obtained.

従来方法における焼成温度は一般的に1,000乃至1,200℃ Baking temperature in a conventional method is generally 1,000 to 1,200 ° C.
程度が要求されるが、本発明方法ではそれ以下の温度、 Although the degree is required, the present invention method lower temperatures,
例えば900℃乃至1,200℃の温度でも十分な焼成を行うことができる。 For example it is possible to perform sufficient sintering even at a temperature of 900 ° C. to 1,200 ° C..

又、得られたコバルトブルー系顔料は、従来のコバルトブルー系顔料がくすんだ色調の緑味の青色であるのに対し、くすみのない鮮明な赤味の青色の製品となり、粒子が非常にソフトであるので、塗料や合成樹脂、その他の被着色材中で非常に優れた分散性を示すものである。 In addition, the resulting cobalt blue pigment, compared is the blue of the green tint of the conventional tones dull cobalt blue pigment, become a vivid redness of the blue of the product without dullness, very particles are soft since it illustrates paints and synthetic resins, and other very good dispersibility in the colored material in.

(効果) 以上の如き本発明によれば水酸化物の沈澱剤として尿素を用いることによって、アルミニウムの水酸化物とコバルトの水酸化物との共沈が均一に行なわれ、共沈物の脱水が容易であり、且つ比較的低温の焼成でも赤味の鮮明なコバルトブルー系顔料が得られ、該コバルトブルー系顔料はソフトな粒子であるので粉砕が容易である。 By using urea as precipitation agent hydroxide (Effects) According to present invention as described above, co-precipitation of the hydroxides of aluminum hydroxide and cobalt is uniformly performed, the coprecipitate dehydration it is easy, and a sharp cobalt blue pigment red tint obtained even at a relatively low temperature of firing, the cobalt blue pigment is easily crushed since the soft particles.

実施例1 硝酸アルミニウム9水塩41.4部と硝酸コバルト6水塩16 Example 1 aluminum nitrate nonahydrate 41.4 parts of cobalt nitrate hexahydrate 16
部に尿素を60部加え、更に硫酸ソーダ5.5部を加え、溶解水を加え全体で600部とする。 Part Urea 60 parts added, further added 5.5 parts of sodium sulfate, and 600 parts of the whole plus dissolved water. よく攪拌し各成分を完全に溶解させた後、水が飛ばないように時計皿をかぶせ、マグネチックスターラーで攪拌しながら温度をあげる。 Well After stirring to completely dissolve the components, covered with a watch glass to prevent water from fly, raise the temperature while stirring with a magnetic stirrer. 温度が80℃になったら一定に保ち、そのまま放置する。 It kept constant when the temperature becomes 80 ℃, allowed to stand as it is. しばらくすると沈澱が析出してくる。 Come to precipitation precipitated after a while.

反応が終了間際になったならば、析出が完全に終了しているかを確認するため、スラリーの1部を取り、瀘紙にてこして瀘液を取り、うすい苛性ソーダ液に落す。 When the reaction is now near the end, in order to confirm whether the precipitation is completely finished, take a portion of the slurry, take the filtrate is strained by filter paper, drop in thin caustic soda solution. 液が透明ならば終了しているので取り出し、充分に水洗をし、残塩を洗い流す。 Extraction since the liquid is terminated if transparent, and sufficiently washed with water, washed away Zanshio. このものを120℃の温度にて12時間以上乾燥させる。 This material is dried for 12 hours or more at a temperature of 120 ° C..

次にこの乾燥した共沈物を900℃で1時間酸化雰囲気中にて焼成させる。 Then to firing the dried coprecipitate C. in 1 hour oxidizing atmosphere at 900 ° C..

このようにして得られた顔料は、全くくすみがなくしかも冴えた色調の鮮明な青色であり、乾式法のものに比べて赤味であった。 Pigment obtained in this way is a vivid blue color tone dull yet no dull at all, was reddish than that of the dry process. また分散性も優れたものであった。 Also were excellent dispersibility.

実施例2 硝酸アルミニウム9水塩41.4部、塩化コバルト6水塩9. Example 2 aluminum nitrate nonahydrate 41.4 parts of cobalt chloride hexahydrate 9.
1部、尿素60部、硫酸ソーダ5.5部を加え、更に溶解水を加え全体で600部とする。 1 part, 60 parts of urea, added 5.5 parts of sodium sulfate, and 600 parts of a whole further added dissolved water.

以下実施例1と同様の方法により合成を行う。 Performing synthesis in the same manner as in Example 1 below.

このようにして得られた顔料は実施例1と同様に冴えた赤味の青色で、くすみも全くみられずソフトで分散性に優れたものであった。 Pigments obtained in this way is the blue red with dull in the same manner as in Example 1, dull also was excellent in dispersibility in soft not observed at all.

比較例1 硝酸アルミニウム9水塩41.4部と硝酸コバルト6水塩16 Comparative Example 1 aluminum nitrate nonahydrate 41.4 parts of cobalt nitrate hexahydrate 16
部とを溶解水200部にとかし、別に苛性ソーダ17.6部をはかり、同様に溶解水200部に溶かす。 Dissolved and parts in dissolved water 200 parts, separately weighed 17.6 parts of caustic soda, likewise dissolved in dissolved water 200 parts. 1ビーカーに沈澱水200部をとり、室温にてモーターで攪拌しながら、用意した塩の溶液と苛性ソーダの溶液を同時に沈澱水の中に滴下する。 1 takes 200 parts precipitated water to the beaker, while stirring at motor at room temperature, it added dropwise prepared salt solution and caustic soda solution at the same time in the precipitation water. この時pHは約9乃至10になるように適宜調整をする。 At this time the pH is appropriately adjusted to about 9 to 10.

滴下が終了したならば、スラリーは1時間室温にて熟成し、その後瀘過水洗を行い、120℃にて12時間以上乾燥させる。 If addition is completed, the slurry was aged for 1 hour at room temperature, then subjected to filtration washed with water and dried over 12 hours at 120 ° C.. 乾燥上りの共沈物はこの時点で収縮してカチカチの状態となる。 Coprecipitate drying up is in a state of tick contracts at this time.

次にこのものを1,200℃で1時間酸化雰囲気にて焼成させる。 Then this thing is baked at 1 hour oxidizing atmosphere at 1,200 ° C..

この様にして得られた顔料は、赤味のブルーであるが、 Pigment obtained in this way is a reddish blue,
粒子が大変固く、粉砕機により粉砕してもザラザラであり分散性の大変悪いものであった。 Particles is very hard, also it was those very bad is dispersible in the rough was pulverized by a pulverizer.

比較例2 酸化アルミニウム11.3部と酸化コバルト4.1部を乳バチにてよくすりつぶして混合し、これを1,200℃にて1時間酸化雰囲気下にて焼成させる。 Comparative Example cobalt oxide 4.1 parts 2 aluminum oxide 11.3 parts were mixed by grinding well in a mortar, which is fired under 1 hour oxidizing atmosphere at 1,200 ° C..

この様にして得られた顔料は乳バチにて軽くつぶせばほぐれるくらいのものであったが、色調はややくすみがあり、緑味で、冴えに乏しい色であった。 Although pigment obtained in this way were those of much loosened if crush lightly in a mortar, color tone are slightly dull, green taste, it was a poor color to dull.

Claims (5)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】アルミニウム塩、コバルト塩及び尿素を水中に溶解して混合液とし、これを加熱することによってアルミニウムの水酸化物とコバルトの水酸化物とを共沈させ、共沈物を瀘過及び水洗後焼成することを特徴とするコバルトブルー系顔料の製造方法。 1. A aluminum salt, a cobalt salt and urea are dissolved in water and mixed solution are coprecipitated and hydroxides of aluminum hydroxide and cobalt by heating it, 瀘 coprecipitate method for producing a cobalt blue pigment, characterized by baking after over and washing.
  2. 【請求項2】加熱が70℃以上の加熱である特許請求の範囲第(1)項に記載のコバルトブルー系顔料の製造方法。 Wherein heating is 70 ° C. or higher in the range of a is claimed heated first (1) Cobalt Blue method for producing a pigment according to claim.
  3. 【請求項3】混合溶液に硫酸イオンを共存させる特許請求の範囲第(1)項に記載のコバルトブルー系顔料の製造方法。 3. A mixed solution ranges first (1) of claims coexist sulfate ion cobalt blue-based method for producing a pigment according to claim.
  4. 【請求項4】焼成温度が900℃以上である特許請求の範囲第(1)項に記載のコバルトブルー系顔料の製造方法。 4. A range of calcination temperature is 900 ° C. or more claims No. (1) Cobalt Blue method for producing a pigment according to claim.
  5. 【請求項5】アルミニウム塩1モルに対し0.3モル以下のクロムの塩を共存させる特許請求の範囲第(1)項に記載のコバルトブルー系顔料の製造方法。 5. A range of aluminum salt per mol claims coexist 0.3 mol of a salt of chromium first (1) Cobalt Blue method for producing a pigment according to claim.
JP15133287A 1987-06-19 1987-06-19 Cobalt Bull - based method of manufacturing a pigment Expired - Fee Related JPH0696454B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15133287A JPH0696454B2 (en) 1987-06-19 1987-06-19 Cobalt Bull - based method of manufacturing a pigment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15133287A JPH0696454B2 (en) 1987-06-19 1987-06-19 Cobalt Bull - based method of manufacturing a pigment

Publications (2)

Publication Number Publication Date
JPS63319216A JPS63319216A (en) 1988-12-27
JPH0696454B2 true JPH0696454B2 (en) 1994-11-30

Family

ID=15516272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15133287A Expired - Fee Related JPH0696454B2 (en) 1987-06-19 1987-06-19 Cobalt Bull - based method of manufacturing a pigment

Country Status (1)

Country Link
JP (1) JPH0696454B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010527669A (en) * 2007-05-23 2010-08-19 ディーエスエム アイピー アセッツ ビー.ブイ. Colored sutures

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02283771A (en) * 1989-04-25 1990-11-21 Dainichiseika Color & Chem Mfg Co Ltd Particulate cobalt blue pigment and preparation thereof
JP2681837B2 (en) * 1990-06-22 1997-11-26 大日精化工業株式会社 Method for producing a particulate composite oxide blue-green pigment
CN1078182C (en) * 1998-03-13 2002-01-23 咸阳多晶材料厂 Process of preparing cobalt aluminate for colour kinescape
JP5392453B2 (en) * 2008-03-07 2014-01-22 戸田工業株式会社 Infrared reflective blue pigment, paint and resin composition using the infrared reflective blue pigment
CN107057408B (en) * 2017-06-22 2019-02-01 中国科学院兰州化学物理研究所 Regulate and control cobalt blue/tectosilicate hybrid pigment color method using metal ion mixing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010527669A (en) * 2007-05-23 2010-08-19 ディーエスエム アイピー アセッツ ビー.ブイ. Colored sutures

Also Published As

Publication number Publication date
JPS63319216A (en) 1988-12-27

Similar Documents

Publication Publication Date Title
EP0444798B1 (en) Method for the preparation of titanium dioxide
KR100477939B1 (en) Mehtod for preparing single craystalline cerium oxide powders
KR100922919B1 (en) Process for preparing zirconium-cerium-based mixed oxides
US5203916A (en) Titanium dioxide pigment and method of preparation
JP2523776B2 (en) Zirconia ceramic poke material composition
US4985229A (en) Process for manufacturing fine zirconium oxide powder
US4231893A (en) Process for preparing aqueous dispersion of ceria and resulting product
KR920010085B1 (en) Production of fine particle of yttrium-aluminum-granet and fine particle of yttrium-aluminum-garnet phosphor
AU610836B2 (en) Coloured pigments, particularly magnetic pigments, their preparation processes and their applications, particularly to the preparation of developing powders
US2558304A (en) Production of iron oxide pigments
US3862297A (en) Manufacture of pigmentary titanium dioxide
US4753680A (en) Process for the preparation of bright, color-pure iron oxide red pigments
DE69907404T2 (en) Method for producing iron oxide black pigment
JP2002537219A (en) Redispersible zinc oxide gels nanoparticulate
US4826537A (en) Lamellar pigments of the general formula MnX -AlY Fe2-(X+Y) O3
JP4992003B2 (en) Method for producing metal oxide fine particles
US20080305025A1 (en) Methods for Production of Metal Oxide Nano Particles, and Nano Particles and Preparations Produced Thereby
EP0384760A2 (en) Improved inorganic pigments and their preparation
JP2848905B2 (en) Encapsulated pigment, and a method of manufacturing the same gray-black
US5004711A (en) Process of producing colloidal zirconia sols and powders using an ion exchange resin
US2218655A (en) Process for producing insoluble titanates
US6113873A (en) Stable anatase titanium dioxide and process for preparing the same
GB2070636A (en) Iron blue nacreous pigments
AU604710B2 (en) Preparation of high purity, homogeneous zirconia mixtures
US4681637A (en) Process for the production of yellow-brown zinc ferrite pigments

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees