JPH06122834A - Carbon black for black pigment - Google Patents
Carbon black for black pigmentInfo
- Publication number
- JPH06122834A JPH06122834A JP27198592A JP27198592A JPH06122834A JP H06122834 A JPH06122834 A JP H06122834A JP 27198592 A JP27198592 A JP 27198592A JP 27198592 A JP27198592 A JP 27198592A JP H06122834 A JPH06122834 A JP H06122834A
- Authority
- JP
- Japan
- Prior art keywords
- carbon black
- refractive index
- matrix
- blackness
- black
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT 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
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/44—Carbon
- C09C1/48—Carbon black
- C09C1/56—Treatment of carbon black ; Purification
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT 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
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/08—Treatment with low-molecular-weight non-polymer organic compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- C01P2006/62—L* (lightness axis)
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、塗料、樹脂などの顔料
用等に使用される顔料用カーボンブラックに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carbon black for pigments used for pigments such as paints and resins.
【０００２】[0002]
【従来の技術】顔料用カーボンブラックは、従来、粒径
や凝集粒サイズなどのコロイダル特性を変えたり、オゾ
ン酸化、硝酸酸化といった表面処理をカーボンブラック
に施し、媒体中での分散状態を変えるなどして、黒度の
調製を行ってきた。2. Description of the Related Art Conventionally, carbon black for pigments has been changed in colloidal properties such as particle size and aggregate size, and subjected to surface treatment such as ozone oxidation and nitric acid oxidation to change the dispersion state in the medium. Then, the blackness has been adjusted.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来のカーボンブラックでは、黒度のコントロールにも限
界があり、またあらゆる場合に黒度が十分というわけで
はなく、黒度を更に大きくするような顔料が要求されて
いた。However, in the above-mentioned conventional carbon black, there is a limit to the control of the blackness, and the blackness is not sufficient in all cases, and a pigment that further increases the blackness is used. Was required.
【０００４】[0004]
【課題を解決するための手段】本発明者達は、かかる課
題を解決すべく鋭意検討した結果、カーボンブラックの
充填率を一定にした状態で、空隙に種々の屈折率の液体
を置換して、分光式色差計でＬ値を測定したところ、液
体の屈折率の上昇とともに、黒度の尺度であるＬ値（明
度）が低下、すなわち黒度が増加し、屈折率１．７４の
液体では、Ｌ値はほぼ検出限界にまで達することを見い
出した。これは、一度媒体１（置換液体）中へ入射した
光が屈折率の大きい媒体１（置換液体）から低い媒体２
（空気）へ出るとき、入射角が臨界角θC ＝Ｓｉｎ
-1（ｎ2 ／ｎ1 ）（ｎ1 ，ｎ2 は媒体１，２の屈折率）
以上になると全反射を起こすため、光の反射率が減少
し、黒度が増加したものと考えられる。本発明者等は、
この原理を応用し、カーボンブラックの表面をマトリッ
クスよりも大きい屈折率物質で被覆することにより、光
の反射率を減少させ、黒度を増加させることが可能であ
ることを見い出した。このような被覆処理を行ったカー
ボンブラックを顔料用として使用することにより、同コ
ロイダル特性を有するものを使用した場合に比べ、黒度
は、大幅に増加することを見出し本願発明に到達した。Means for Solving the Problems As a result of intensive studies for solving the above problems, the inventors of the present invention have replaced the liquid with various refractive indexes in the voids while keeping the filling rate of carbon black constant. When the L value was measured with a spectroscopic colorimeter, the L value (brightness), which is a measure of blackness, decreased, that is, the blackness increased as the refractive index of the liquid increased, and the liquid with a refractive index of 1.74 , L value almost reached the detection limit. This is because the light that has once entered the medium 1 (displacement liquid) is low in the medium 1 (displacement liquid) having a high refractive index.
When exiting (air), the incident angle is the critical angle θ C = Sin
-1 (n 2 / n 1 ) (n 1 and n 2 are the refractive indices of the media 1 and 2)
It is considered that when the above value is reached, total reflection occurs, so that the light reflectance is reduced and the blackness is increased. The present inventors
By applying this principle, it was found that it is possible to reduce the reflectance of light and increase the blackness by coating the surface of carbon black with a refractive index material larger than the matrix. It has been found that the blackness is greatly increased by using the carbon black subjected to such a coating treatment for a pigment, as compared with the case where a carbon black having the same colloidal characteristics is used.
【０００５】即ち、本発明の目的は、同コロイダル特性
を有するカーボンブラックと比較して、黒度が著しく向
上する顔料用カーボンブラックを工業的有利に提供する
ことに存する。しかして、かかる本発明の目的は、顔料
用として使用するカーボンブラックにおいて、屈折率
１．６以上で、かつ使用されるマトリックスよりも屈折
率の大きい物質を表面に被覆処理した顔料用カーボンブ
ラック、および該カーボンブラックをマトリックスに配
合してなる黒色組成物、により容易に達成される。That is, an object of the present invention is to industrially provide a carbon black for a pigment, which has a significantly improved blackness as compared with a carbon black having the same colloidal characteristics. Thus, the object of the present invention is to provide a carbon black for pigments, which has a refractive index of 1.6 or more, and a surface of which is coated with a substance having a larger refractive index than the matrix used, And a black composition obtained by blending the carbon black in a matrix.
【０００６】以下、本発明をより詳細に説明する。本発
明のカーボンブラックは、屈折率が１．６以上で、かつ
屈折率がマトリックスよりも大きい物質で表面を被覆す
ることを特徴とする。この表面被覆物質としては、屈折
率が使用されるマトリックスより大きく１．６以上であ
ればよく、好ましくは液体である。例えばジヨードメタ
ン、クロロナフタレン、フェニルイソシアネートなどの
他、３環以上からなる芳香族系の化合物にも、フェニル
ナフタレン、メチルナフトキサゾール等屈折率の大きい
ものが多く、黒度を増加させるには有効である。適用す
るマトリックスは特に限定するものではないが、例え
ば、塗料用では、メラミン系、アルキド系、アクリル
系、エポキシ系、ウレタン系などの合成樹脂塗料、樹脂
着色用では、ポリ塩化ビニル（ＰＶＣ）樹脂、ポリエチ
レン樹脂、ポリスチレン樹脂、アクリロニトリルブタジ
エンスチレン（ＡＢＳ）樹脂など通常用いられるマトリ
ックスはいずれも使用することができる。これらのマト
リックスの屈折率よりも大きい物質をカーボンブラック
表面に被覆処理し、該処理を行ったカーボンブラックを
使用することにより、黒度を増加させることができる。
例えば、マトリックスがメラミン・アルキド樹脂の場
合、屈折率が１．６程度なので、屈折率が１．７４であ
るジョードメタンをカーボンブラック表面に被覆処理
し、該処理を行ったカーボンブラックを使用することに
より、黒度を増加させることができる。The present invention will be described in more detail below. The carbon black of the present invention is characterized in that its surface is coated with a substance having a refractive index of 1.6 or more and a refractive index larger than that of the matrix. The surface coating substance may have a refractive index larger than that of the matrix used and may be 1.6 or more, and is preferably a liquid. For example, in addition to diiodomethane, chloronaphthalene, phenylisocyanate, etc., many aromatic compounds having three or more rings, such as phenylnaphthalene and methylnaphthoxazole, have a large refractive index and are effective for increasing blackness. is there. The matrix to be applied is not particularly limited, but for example, for coating materials, melamine-based, alkyd-based, acrylic-based, epoxy-based, urethane-based synthetic resin coatings, for resin coloring, polyvinyl chloride (PVC) resin. Any of commonly used matrices such as polyethylene resin, polystyrene resin, acrylonitrile butadiene styrene (ABS) resin can be used. The blackness can be increased by coating the surface of the carbon black with a substance having a refractive index higher than that of the matrix and using the treated carbon black.
For example, when the matrix is a melamine alkyd resin, since the refractive index is about 1.6, it is necessary to coat the surface of carbon black with jod methane having a refractive index of 1.74 and use the treated carbon black. As a result, the blackness can be increased.
【０００７】被覆の方法については、特に制限するもの
ではない。高屈折率物質が液体の場合、カーボンブラッ
クと液体とをボールミルなどで混合する程度でも十分効
果が上がる。一方、固体の場合の被覆法としては、ＣＶ
Ｄ，ＰＶＤなどの気相合成法、ゾルーゲル法、グラフト
化などの粉体工学において行われている表面処理法が適
用できる。被覆量の上限は、特に限定するものではない
が、顔料としてのハンドリング性を落とさず、あるいは
複合体とした時の物性低下をおこさない量とすべきであ
る。被覆量の下限は、十分な被覆効果をもたらす量であ
ればよく、限定的ではないが少なくともカーボンブラッ
ク表面を被覆物質が１分子層覆う程度が好ましい。ま
た、カーボンブラック表面が部分的に覆われた状態や表
面被覆物質がマトリックス中に溶け出し、カーボンブラ
ック周囲のマトリックスの屈折率が部分的に増加した状
態でも効果は十分あがる。The coating method is not particularly limited. When the high refractive index substance is a liquid, the effect is sufficiently enhanced even by mixing the carbon black and the liquid with a ball mill or the like. On the other hand, as a coating method in the case of solid, CV
A gas phase synthesis method such as D or PVD, a sol-gel method, a surface treatment method which is performed in powder engineering such as grafting can be applied. The upper limit of the coating amount is not particularly limited, but it should be an amount that does not impair the handling property as a pigment or that does not deteriorate the physical properties of the composite. The lower limit of the coating amount is not particularly limited as long as it provides a sufficient coating effect, but is preferably such that at least one molecular layer of the coating substance covers the surface of carbon black. Further, the effect is sufficiently enhanced even when the surface of the carbon black is partially covered or when the surface coating substance is dissolved in the matrix and the refractive index of the matrix around the carbon black is partially increased.
【０００８】[0008]
【実施例】以下、本発明を実施例により更に詳細に説明
するが、本発明は、その要旨を越えない限り、下記実施
例により限定されるものではない。EXAMPLES The present invention will be described in more detail with reference to examples below, but the present invention is not limited to the following examples unless it exceeds the gist thereof.
【０００９】（実施例１）市販カーボンブラック三菱化
成（株）製＃２６００（粒径１３ｎｍ）３ｇに屈折率
１．７４のジヨードメタンを１．５ｃｃ加えて混合した
後、ワニス（関西ペイント製“アミラックＮｏ１０２
６”１６ｇ、シンナー１０ｇを加え、ペイントコンディ
ショナーで９０分間分散し、さらにワニスを５０ｇ加
え、ペイントコンディショナーで１０分間混合して、塗
料を作成した。マトリックスであるワニスの屈折率は
１．６である。丸ガラスセル中に塗料を入れて固化さ
せ、Ｌ値（明度）を分光式色差計（日本電色“ＳＺ−Σ
９０”、０°照明−４５°受光）で測定したところ、
３．８７であった。(Example 1) 1.5 g of diiodomethane having a refractive index of 1.74 was added to 3 g of commercially available carbon black # 2600 (particle size: 13 nm) manufactured by Mitsubishi Kasei Co., Ltd., and then mixed with varnish ("Amilak" manufactured by Kansai Paint Co., Ltd.). No102
6 "16 g and thinner 10 g were added, dispersed with a paint conditioner for 90 minutes, 50 g of varnish was further added, and mixed with a paint conditioner for 10 minutes to prepare a paint. The refractive index of the varnish matrix was 1.6. The paint is put into a round glass cell and solidified, and the L value (brightness) is measured by a spectroscopic color difference meter (Nippon Denshoku “SZ-Σ
90 ", 0 ° illumination-45 ° light reception)
It was 3.87.
【００１０】（比較例１）実施例１において、ジヨード
メタンを加えないこと以外は同様にして、Ｌ値を測定し
たところ、３．９９と実施例１より大きく、黒度は劣っ
た。Comparative Example 1 The L value was measured in the same manner as in Example 1 except that diiodomethane was not added, and the L value was 3.99, which was larger than that in Example 1 and the blackness was inferior.
【００１１】（実施例２）市販カーボンブラックとし
て、三菱化成（株）製＃１０（粒径８４ｎｍ）を用いた
こと以外は実施例１と同様の方法でＬ値を測定したとこ
ろ、７．９３であった。Example 2 The L value was measured in the same manner as in Example 1 except that # 10 (particle size 84 nm) manufactured by Mitsubishi Kasei Co., Ltd. was used as the commercially available carbon black. Met.
【００１２】（比較例２）実施例２において、ジョード
メタンを加えないこと以外は同様にして、Ｌ値を測定し
たところ、８．１８と実施例２より大きく、黒度は劣っ
た。Comparative Example 2 The L value was measured in the same manner as in Example 2 except that jod methane was not added. As a result, it was 8.18, which was larger than that in Example 2 and the blackness was inferior.
【００１３】（比較例３）実施例２において、ジョード
メタンのかわりに屈折率１．４０のｎ−ブタノールを加
えて、同様にしてＬ値を測定したところ、８．２４と実
施例２より大きく、さらに黒度は劣った。(Comparative Example 3) In Example 2, n-butanol having a refractive index of 1.40 was added in place of jodhmethane, and the L value was measured in the same manner. , And the blackness was worse.
【００１４】（実施例３）市販カーボンブラック三菱化
成（株）製＃２６００（粒径１３ｎｍ）１．５ｇに、屈
折率１．４０のｎ−ブタノール０．５４ｃｃ加えて混合
した後、屈折率１．３６のエタノール２０ｃｃ中に分散
させ、このスラリーを丸ガラスセル中に入れ、実施例１
と同様にしてＬ値を測定したところ、４．２４であっ
た。Example 3 0.54 cc of n-butanol having a refractive index of 1.40 was added to 1.5 g of commercially available carbon black # 2600 (particle size: 13 nm) manufactured by Mitsubishi Kasei Co., Ltd. Example 1 was dispersed in 20 cc of ethanol of 0.36 and the slurry was placed in a round glass cell.
The L value was measured in the same manner as above and was 4.24.
【００１５】（比較例４）実施例３において、ｎ−ブタ
ノールを加えないこと以外は同様にして、Ｌ値を測定し
たところ、４．３５と実施例３より大きく、黒度は劣っ
た。Comparative Example 4 The L value was measured in the same manner as in Example 3 except that n-butanol was not added, and it was 4.35, which was larger than that in Example 3 and the blackness was inferior.
【００１６】（実施例４）市販カーボンブラック三菱化
成（株）製＃１０（粒径８４ｎｍ）２．０ｇに、屈折率
１．４０のｎ−ブタノール０．０５６ｃｃ加えて混合し
た後、屈折率１．３６のエタノール２０ｃｃ中に分散さ
せ、このスラリーを丸ガラスセル中に入れ、実施例１と
同様にしてＬ値を測定したところ、９．９４であった。Example 4 Commercially available carbon black (Mitsubishi Kasei Co., Ltd.) # 10 (particle size 84 nm) (2.0 g) was mixed with 0.056 cc of n-butanol having a refractive index of 1.40, and then mixed with a refractive index of 1 It was dispersed in 20 cc of ethanol of 0.36, the slurry was put into a round glass cell, and the L value was measured in the same manner as in Example 1. The L value was 9.94.
【００１７】（比較例５）実施例４において、ｎ−ブタ
ノールを加えないこと以外は同様にして、Ｌ値を測定し
たところ、１０．１４と実施例４より大きく、黒度は劣
った。Comparative Example 5 The L value was measured in the same manner as in Example 4 except that n-butanol was not added. As a result, it was 10.14, which was larger than that in Example 4, and the blackness was inferior.
【００１８】[0018]
【発明の効果】本発明の高屈折率物質を被覆したカーボ
ンブラックは、同コロイダル特性を有する従来のカーボ
ンブラックと比較して、黒度を容易に向上することがで
き、多大な工業的利益を提供するものである。INDUSTRIAL APPLICABILITY The carbon black coated with the high refractive index material of the present invention can easily improve the blackness as compared with the conventional carbon black having the same colloidal characteristics, which is a great industrial advantage. It is provided.
Claims (2)
マトリックスよりも屈折率の大きい物質を表面に被覆処
理した顔料用カーボンブラック。1. A carbon black for a pigment, the surface of which is coated with a substance having a refractive index of 1.6 or more and a refractive index larger than that of a matrix used.
リックスに配合してなる黒色組成物。2. A black composition prepared by blending the carbon black according to claim 1 in a matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27198592A JP3321850B2 (en) | 1992-10-09 | 1992-10-09 | Carbon black for black pigment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27198592A JP3321850B2 (en) | 1992-10-09 | 1992-10-09 | Carbon black for black pigment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06122834A true JPH06122834A (en) | 1994-05-06 |
| JP3321850B2 JP3321850B2 (en) | 2002-09-09 |
Family
ID=17507545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27198592A Expired - Fee Related JP3321850B2 (en) | 1992-10-09 | 1992-10-09 | Carbon black for black pigment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3321850B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10510864A (en) * | 1994-12-15 | 1998-10-20 | キャボット コーポレイション | Non-aqueous inks and coatings containing carbon products |
| EP0881523A1 (en) * | 1996-02-14 | 1998-12-02 | Sekisui Fine Chemical Co., Ltd. | Liquid crystal display element spacer and liquid crystal display element |
| KR20170012296A (en) | 2014-06-12 | 2017-02-02 | 토요잉크Sc홀딩스주식회사 | Resin composition, layered product, and process for producing layered product |
| CN108337878A (en) * | 2015-12-07 | 2018-07-27 | 宝洁公司 | Change treatment compositions, the device and method of keratinous surfaces |
| KR20190124744A (en) | 2017-03-15 | 2019-11-05 | 토요잉크Sc홀딩스주식회사 | Multilayered Carbon Nanotubes, Manufacturing Method of Multilayered Carbon Nanotubes, Dispersions, Resin Compositions, and Coating Films |
-
1992
- 1992-10-09 JP JP27198592A patent/JP3321850B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10510864A (en) * | 1994-12-15 | 1998-10-20 | キャボット コーポレイション | Non-aqueous inks and coatings containing carbon products |
| EP0881523A1 (en) * | 1996-02-14 | 1998-12-02 | Sekisui Fine Chemical Co., Ltd. | Liquid crystal display element spacer and liquid crystal display element |
| EP0881523A4 (en) * | 1996-02-14 | 2000-07-12 | Sekisui Chemical Co Ltd | Liquid crystal display element spacer and liquid crystal display element |
| KR20170012296A (en) | 2014-06-12 | 2017-02-02 | 토요잉크Sc홀딩스주식회사 | Resin composition, layered product, and process for producing layered product |
| CN108337878A (en) * | 2015-12-07 | 2018-07-27 | 宝洁公司 | Change treatment compositions, the device and method of keratinous surfaces |
| JP2019508365A (en) * | 2015-12-07 | 2019-03-28 | ザ プロクター アンド ギャンブル カンパニー | Therapeutic compositions, devices and methods for modifying keratinous surfaces |
| CN108337878B (en) * | 2015-12-07 | 2021-07-20 | 宝洁公司 | Treatment compositions, apparatus and methods for altering keratinous surfaces |
| KR20190124744A (en) | 2017-03-15 | 2019-11-05 | 토요잉크Sc홀딩스주식회사 | Multilayered Carbon Nanotubes, Manufacturing Method of Multilayered Carbon Nanotubes, Dispersions, Resin Compositions, and Coating Films |
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