JPS6241274B2 - - Google Patents
Info
- Publication number
- JPS6241274B2 JPS6241274B2 JP54072855A JP7285579A JPS6241274B2 JP S6241274 B2 JPS6241274 B2 JP S6241274B2 JP 54072855 A JP54072855 A JP 54072855A JP 7285579 A JP7285579 A JP 7285579A JP S6241274 B2 JPS6241274 B2 JP S6241274B2
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- pigment
- pigmented
- gelatin
- polymeric organic
- 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
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 75
- 239000000049 pigment Substances 0.000 claims description 40
- 108010010803 Gelatin Proteins 0.000 claims description 17
- 229920000159 gelatin Polymers 0.000 claims description 17
- 239000008273 gelatin Substances 0.000 claims description 17
- 235000019322 gelatine Nutrition 0.000 claims description 17
- 235000011852 gelatine desserts Nutrition 0.000 claims description 17
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 12
- 150000007524 organic acids Chemical class 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 229920002845 Poly(methacrylic acid) Polymers 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 229920002125 Sokalan® Polymers 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000004584 polyacrylic acid Substances 0.000 claims description 3
- 239000007900 aqueous suspension Substances 0.000 claims description 2
- 239000002002 slurry Substances 0.000 description 15
- 244000215068 Acacia senegal Species 0.000 description 11
- 229920000084 Gum arabic Polymers 0.000 description 11
- 235000010489 acacia gum Nutrition 0.000 description 11
- 239000000205 acacia gum Substances 0.000 description 11
- 239000011230 binding agent Substances 0.000 description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 241000270295 Serpentes Species 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- JOSWYUNQBRPBDN-UHFFFAOYSA-P ammonium dichromate Chemical compound [NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O JOSWYUNQBRPBDN-UHFFFAOYSA-P 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241000220479 Acacia Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229930014626 natural product Natural products 0.000 description 2
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 235000010643 Leucaena leucocephala Nutrition 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Luminescent Compositions (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、表面に顔料が付着された蛍光体なら
びにその製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a phosphor having a pigment attached to its surface and a method for producing the same.
最近、カラーテレビジヨン用ブラウン管には、
顔料付蛍光体が多く使用されている。
Recently, cathode ray tubes for color television have
Pigmented phosphors are often used.
表面に顔料が付着された蛍光体は、高いコント
ラストを実現できる特長を有するが、顔料が付着
されない蛍光体に比べて種々の問題を生じる。即
ち、カラーテレビジヨン用ブラウン管の製造工程
に於て、PVA−ADCスラリー中における顔料の
蛍光体粒子からの剥離、スラリーの不安定性、顔
料の紫外線吸収による露光感度の不足等に問題が
ある。 Phosphors with pigments attached to their surfaces have the advantage of achieving high contrast, but they pose various problems compared to phosphors without pigments. That is, in the manufacturing process of cathode ray tubes for color television, there are problems such as peeling of the pigment from the phosphor particles in the PVA-ADC slurry, instability of the slurry, and insufficient exposure sensitivity due to ultraviolet absorption of the pigment.
これ等の問題点は、顔料を蛍光体に付着させる
バインダーに一因がある。すでに用いられている
バインダーとして、ゼラチン、あるいは、ゼラチ
ンとアラビアゴムの組み合わせが特開昭53−
50880号公報にて開示されている。これ等のバイ
ンダーを使用して、顔料を蛍光体表面に付着出来
るが、この方法で得られた蛍光体は、常時安定し
て優れた特性のものが得られない欠点がある。 These problems are due in part to the binder that attaches the pigment to the phosphor. As a binder already in use, gelatin or a combination of gelatin and gum arabic is used in Japanese Patent Application Laid-open No. 1983-
It is disclosed in Publication No. 50880. Pigments can be attached to the surface of the phosphor using these binders, but the phosphor obtained by this method has the disadvantage that it cannot always have stable and excellent properties.
カラーテレビジヨン用ブラウン管の製造におい
ては、優れた蛍光面を実現する為に、蛍光体パタ
ーンの形成工程で、結着性、感度、輪郭の乱れ、
他の色の蛍光体へのカブリ、面の粗さ等種々の特
性が要求される。 In the production of cathode ray tubes for color television, in order to achieve an excellent phosphor screen, the process of forming a phosphor pattern takes a number of steps such as adhesion, sensitivity, irregularities in contour, etc.
Various characteristics are required, such as fogging on phosphors of other colors and surface roughness.
これ等全ての特性を満たす為に、蛍光体が混入
されたPVA−ADCスラリーは、比重、粘土、重
クロム酸アンモニウムの量やPH等が精密に調整さ
れる。これらの調整される条件によつて顔料付蛍
光体もそれらの条件に適応していかなければなら
ない。しかも安定に製造されなければならない。 In order to meet all these characteristics, the specific gravity, clay, ammonium dichromate content, pH, etc. of the PVA-ADC slurry mixed with phosphor are precisely adjusted. Depending on these conditions, the pigmented phosphor must also adapt to these conditions. Moreover, it must be manufactured stably.
ところが、従来のゼラチン、あるいは、ゼラチ
ンとアラビアゴムを顔料のバインダーに使用する
場合、それらが天然物であるので、品質を人工的
に厳しくコントロールすることが極めて困難で、
品質のバラツキによる問題点を生じる。ただ、ゼ
ラチンは写真工業に古くから利用されており、特
にJIS1種品を用いる事により厳密な品質管理をさ
れたものが得られる。 However, when using conventional gelatin or gelatin and gum arabic as a binder for pigments, since they are natural products, it is extremely difficult to strictly control their quality artificially.
Problems arise due to variations in quality. However, gelatin has been used in the photographic industry for a long time, and by using JIS Class 1 products, products with strict quality control can be obtained.
これに対してアラビアゴムは、アカシヤ属植物
の枝から分泌される天然産の複雑な多糖類で、自
然環境によつて決まる植物の外的条件を人工的手
法によつて同一化し、これによつて品質を均一化
するのは極めて困難である。 On the other hand, gum arabic is a naturally occurring complex polysaccharide secreted from the branches of plants of the genus Acacia. Therefore, it is extremely difficult to make the quality uniform.
バインダーの不均質性は、これを使用した顔料
付蛍光体の物性にバラツキを生ぜしめ、これによ
つてブラウン管の蛍光膜の塗布特性に悪影響を与
える。 The non-uniformity of the binder causes variations in the physical properties of the pigmented phosphor using the binder, thereby adversely affecting the coating characteristics of the fluorescent film of the cathode ray tube.
本発明は、従来のこの欠点を除去することを目
的に開発されたもので、本発明の重要な目的は、
アラビアゴムに代わつて、人工的に合成出来るア
クリル系で水溶性の多価高分子有機酸を使用する
ことによつて、ブラウン管製造工程における蛍光
体スラリーの適応範囲が広く、しかも安定して均
質な蛍光体膜が実現できる顔料付蛍光体、および
その製造方法を提供するにある。 The present invention was developed with the aim of eliminating this drawback of the prior art, and the important objectives of the present invention are:
By using an artificially synthesized acrylic water-soluble polyhydric polymeric organic acid instead of gum arabic, the phosphor slurry can be used in a wide range of applications in the cathode ray tube manufacturing process, and it can also be made stable and homogeneous. An object of the present invention is to provide a pigmented phosphor that can realize a phosphor film, and a method for producing the same.
本発明の顔料付蛍光体は、顔料粒子が、アクリ
ル系で水溶性の多価高分子有機酸とゼラチンによ
つて蛍光体表面に付着されている。アクリル系で
水溶性の多価高分子有機酸には、例えば、ポリア
クリル酸とポリメタクリル酸等が使用できる。
In the pigmented phosphor of the present invention, pigment particles are attached to the surface of the phosphor using an acrylic water-soluble polyvalent polymeric organic acid and gelatin. For example, polyacrylic acid, polymethacrylic acid, etc. can be used as the acrylic water-soluble polyvalent polymeric organic acid.
更に、本発明の蛍光体の製造方法は、蛍光体と
顔料の水懸濁液に、アクリル系で水溶性の多価高
分子有機酸とゼラチンの水溶液を加え、PHを4.5
以下の条件下で顔料を蛍光体表面に付着させる。 Furthermore, in the method for producing the phosphor of the present invention, an aqueous solution of an acrylic water-soluble polyvalent polymeric organic acid and gelatin is added to an aqueous suspension of the phosphor and pigment, and the pH is adjusted to 4.5.
The pigment is attached to the phosphor surface under the following conditions.
この製法に於て、好ましくは、顔料粒子をアク
リル系の多価高分子有機酸とゼラチンによつて蛍
光体表面に付着させた後、蛍光体をろ過選別して
120℃〜200℃で熱処理する。 In this manufacturing method, preferably, pigment particles are attached to the surface of the phosphor using an acrylic polyvalent polymeric organic acid and gelatin, and then the phosphor is filtered and sorted.
Heat treatment at 120℃~200℃.
アラビアゴムに代わつて使用されるポリアクリ
ル酸やポリメタクリル酸等のアクリル系で水溶性
の多価高分子有機酸は、自然環境、並びにアカシ
ヤ属植物自体の特性を人工的に均一化できない天
然産のアラビアゴムに比べると、人工的に反応条
件等の外的条件を均一化して合成でき、高品質
で、しかも均一な品質のものが得られる。従つ
て、これをバインダーに使用する本発明の顔料付
蛍光体は、製品のバラツキを極減して、常時安定
して優れた蛍光膜が製造でき、更に、ブラウン管
製造工程に於ける蛍光体スラリーの適応範囲が広
く、特に、広いPH範囲において顔料剥離を減少で
きる特長が実現される。
Acrylic water-soluble polyvalent polymeric organic acids such as polyacrylic acid and polymethacrylic acid, which are used in place of gum arabic, are natural products that cannot be artificially homogenized in the natural environment or in the properties of Acacia plants themselves. Compared to gum arabic, it can be synthesized by artificially homogenizing external conditions such as reaction conditions, and it can be synthesized with high and uniform quality. Therefore, the pigmented phosphor of the present invention using the pigmented phosphor as a binder can minimize product variations and consistently produce excellent phosphor films, and can also be used as a phosphor slurry in the cathode ray tube manufacturing process. It has a wide range of applicability, and in particular, has the advantage of reducing pigment peeling in a wide PH range.
以下に実施例を示す。 Examples are shown below.
実施例 １
Y2O2S：Eu蛍光体１Kgを水５中に分散し、
微粉砕した顔料として硫セレン化カドミウム、ベ
ンガラ又は黄色酸化鉄を、目的とする着色濃度に
応じて添加量を調整して加えてよく撹拌混合す
る。Example 1 Y 2 O 2 S: 1 kg of Eu phosphor was dispersed in water 5,
Finely pulverized pigments such as cadmium selenide, red red iron oxide, or yellow iron oxide are added in an amount that is adjusted according to the desired coloring density, and the mixture is thoroughly stirred and mixed.
次に５％ゼラチン（JIS1種）10mlと、アクリル
系で水溶性の多価高分子有機酸として５％ポリア
クリル酸ナトリウム（重合度22000〜66000）５ml
を加えて10分間撹拌を続ける。次に20％酢酸でPH
４に調整する。この懸濁液を10〜15分熟成した
後、ろ過、水洗して乾燥する。 Next, add 10 ml of 5% gelatin (JIS type 1) and 5 ml of 5% sodium polyacrylate (degree of polymerization 22,000 to 66,000) as an acrylic water-soluble polyvalent polymeric organic acid.
Add and continue stirring for 10 minutes. Then PH with 20% acetic acid
Adjust to 4. After aging this suspension for 10 to 15 minutes, it is filtered, washed with water, and dried.
この実施例に於て、５％ゼラチンは蛍光体１Kg
に対して10ml、即ち0.05重量％混合している。
又、５％ポリアクリル酸ナトリウムは蛍光体１Kg
に対して0.05重量％混合している。 In this example, 5% gelatin is 1 kg of phosphor.
10 ml, ie 0.05% by weight, is mixed.
Also, 5% sodium polyacrylate is 1 kg of phosphor.
It is mixed at 0.05% by weight.
得られた蛍光体は、バインダーにアラビアゴム
を使用して顔料を蛍光体に付着したものに比べ
て、より広いPH範囲でPVA−ADCスラリー中で
の蛍光体からの剥離が少ない優れた特性を示し
た。 The obtained phosphor has excellent properties with less peeling from the phosphor in PVA-ADC slurry over a wider pH range than when the pigment is attached to the phosphor using gum arabic as a binder. Indicated.
この実施例で得られた顔料付蛍光体と、従来の
蛍光体、即ち、蛍光体の表面にゼラチンとアラビ
アゴムとを介して顔料粒子を付着したものとの比
較を第１図に示す。この図に於て曲線Ａ，Ｂは、
顔料がベンガラで、ベンガラの付着量が蛍光体に
対して0.15重量％である顔料付蛍光体の顔料剥離
率を示す。 FIG. 1 shows a comparison between the pigmented phosphor obtained in this example and a conventional phosphor, in which pigment particles are attached to the surface of the phosphor via gelatin and gum arabic. In this figure, curves A and B are
This figure shows the pigment removal rate of a pigmented phosphor in which the pigment is red iron oxide and the amount of red oxide adhered to the phosphor is 0.15% by weight.
この図の測定データは、スネークポンプに繰り
返し顔料付蛍光体を循環させて顔料の剥離率を測
定した数値を示している。スネークポンプは、実
際のブラウン管製造工程において蛍光体スラリー
の移送に使用されている。この測定は、実際のブ
ラウン管製造工程に於て蛍光体スラリーを移送す
る時の条件よりも著しく厳しくして、顔料の剥離
状態を測定している。即ち、水とPVAとADC
（重クロム酸アンモニウム）顔料付蛍光体とを
2.1：0.06：0.004：１の重量比で混合した蛍光体
スラリー100c.c.をビーカーに入れ、このビーカー
にスネークポンプの吸入側と吐出側とを連結し、
５分間スネークポンプで蛍光体スラリーを循環さ
せた。スネークポンプには、流量が１リツトル／
分のものを使用した。顔料の剥離率は、蛍光体表
面から剥離された顔料を回収してその重量を測定
して計測した。 The measurement data in this figure shows the values obtained by measuring the peeling rate of the pigment by repeatedly circulating the pigmented phosphor in a snake pump. Snake pumps are used to transport phosphor slurry in the actual cathode ray tube manufacturing process. In this measurement, the peeling state of the pigment is measured under significantly stricter conditions than when transferring the phosphor slurry in the actual cathode ray tube manufacturing process. i.e. water, PVA and ADC
(ammonium dichromate) pigmented phosphor
Put 100 c.c. of phosphor slurry mixed at a weight ratio of 2.1:0.06:0.004:1 into a beaker, connect the suction side and discharge side of the snake pump to this beaker,
The phosphor slurry was circulated with a snake pump for 5 minutes. The snake pump has a flow rate of 1 liter/liter.
I used what I had. The peeling rate of the pigment was measured by collecting the pigment peeled from the surface of the phosphor and measuring its weight.
この図から明らかなように、本発明の実施例１
で製造された顔料付蛍光体は、蛍光体スラリーの
PHが７の時、剥離率が13％であつたのに対し、従
来のゼラチンとアラビアゴムとで顔料が付着され
た蛍光体は、約20％もの顔料が剥離した。このこ
とから、本発明の方法で製造された顔料付蛍光体
は、顔料が強固に付着されて蛍光体から容易に剥
離しないことが明白である。 As is clear from this figure, Example 1 of the present invention
The pigmented phosphor manufactured by the phosphor slurry
When the pH was 7, the peeling rate was 13%, whereas in the conventional phosphor with pigments attached using gelatin and gum arabic, about 20% of the pigments were peeled off. From this, it is clear that in the pigmented phosphor produced by the method of the present invention, the pigment is firmly attached and does not easily peel off from the phosphor.
実施例 ２
（ZnS：AgAl）蛍光体１Kgを水５中に分散
し、微粉砕したコバルトブルー20gを加えよく撹
拌する。次に５％ゼラチン（JIS1種）20mlと、ア
クリル系で水溶性の多価高分子有機酸として、別
に調整したポリメタクリル酸の水溶液10mlを加
え、更に、20％酢酸でPHを４に調整する。その後
ろ過水洗して乾燥して顔料付蛍光体を得る。Example 2 1 kg of (ZnS:AgAl) phosphor is dispersed in 5 ml of water, 20 g of finely ground cobalt blue is added, and the mixture is thoroughly stirred. Next, add 20 ml of 5% gelatin (JIS type 1) and 10 ml of an aqueous solution of polymethacrylic acid, which was prepared separately as an acrylic water-soluble polyvalent polymeric organic acid, and further adjust the pH to 4 with 20% acetic acid. . Thereafter, it is filtered, washed with water, and dried to obtain a pigmented phosphor.
この実施例に使用するポリメタクリル酸は、次
のようにして調整する。５％メタクリル酸溶液
100mlに過硫酸アンモニウム0.1gを加え90℃で２
時間反応させる。 Polymethacrylic acid used in this example is prepared as follows. 5% methacrylic acid solution
Add 0.1g of ammonium persulfate to 100ml and heat at 90℃ for 2 hours.
Allow time to react.
この実施例で得られた蛍光体は、実施例１で得
られた蛍光体よりもPVA−ADCスラリー中での
分散性が良くブラウン管塗布面が良好であつた。 The phosphor obtained in this example had better dispersibility in the PVA-ADC slurry than the phosphor obtained in Example 1, and the coated surface of the cathode ray tube was good.
又、この実施例で得られた顔料付蛍光体も、従
来の顔料付蛍光体に比べると顔料が強固に付着さ
れた。蛍光体スラリー中に於ける顔料の剥離率を
第２図に示す。この図の測定条件は第１図と同様
にし、曲線Ａは実施例２で得られた蛍光体、曲線
Ｂは蛍光体と顔料の種類ならびにその付着量を同
一にして、ゼラチンとアラビアゴムとで顔料を付
着した蛍光体の顔料剥離率を示す。 In addition, the pigment-attached phosphor obtained in this example also had the pigment adhered more firmly than the conventional pigment-attached phosphor. Figure 2 shows the peeling rate of the pigment in the phosphor slurry. The measurement conditions in this figure were the same as in Figure 1, curve A was for the phosphor obtained in Example 2, and curve B was for gelatin and gum arabic, with the same type of phosphor and pigment and the same amount of adhesion. It shows the pigment peeling rate of the phosphor to which the pigment is attached.
この図か明かなように、蛍光体スラリーの全て
のPH範囲に於て、本発明の蛍光体は、従来のゼラ
チンとアラビアゴムとで顔料が付着された蛍光体
よりも顔料の剥離が少なかつた。ただ、実施例１
で得られた蛍光体に比べると、実施例２で製造さ
れ蛍光体は、多少顔料の剥離率が高くなつた。こ
れは、顔料であるコバルトブルーの付着量が、ベ
ンガラに比較して約10倍も多い為である。 As is clear from this figure, in all pH ranges of the phosphor slurry, the phosphor of the present invention exhibits less peeling of the pigment than the conventional phosphor with pigments attached with gelatin and gum arabic. Ta. However, Example 1
Compared to the phosphor obtained in Example 2, the phosphor produced in Example 2 had a somewhat higher pigment peeling rate. This is because the amount of the pigment cobalt blue attached is about 10 times greater than red iron.
実施例 ３
実施例１と全く同様にして得た蛍光体を160℃
で４時間熱処理を行う。熱処理温度は、好ましく
は120〜200℃の範囲に決定される。Example 3 A phosphor obtained in exactly the same manner as in Example 1 was heated to 160°C.
Heat treatment is performed for 4 hours. The heat treatment temperature is preferably determined to be in the range of 120 to 200°C.
熱処理して得られた蛍光体は、これをブラウン
管に塗布するスラリーの状態に於ても経時変化が
少なく、優れたブラウン管塗布面が得られ、又顔
料剥離の点でも改良された特性を示した。 The heat-treated phosphor showed little change over time even in the form of slurry applied to cathode ray tubes, resulting in an excellent coating surface for cathode ray tubes, and also showed improved properties in terms of pigment peeling. .
第１図は実施例１で得られた顔料付蛍光体と従
来の蛍光体との顔料剥離率を示す測定グラフ、第
２図は実施例２で得られた顔料付蛍光体と従来の
蛍光体との顔料剥離率を示す測定グラフである。
Figure 1 is a measurement graph showing the pigment peeling rate between the pigmented phosphor obtained in Example 1 and the conventional phosphor, and Figure 2 is the measurement graph showing the pigmented phosphor obtained in Example 2 and the conventional phosphor. It is a measurement graph showing the pigment peeling rate with.
Claims (1)
子有機酸とゼラチンによつて蛍光体表面に付着さ
れていることを特徴とする顔料付蛍光体。 ２ アクリル系で水溶性の多価高分子有機酸がポ
リアクリル酸である特許請求の範囲第１項記載の
顔料付蛍光体。 ３ アクリル系で水溶性の多価高分子有機酸がポ
リメタクリル酸である特許請求の範囲第１項記載
の顔料付蛍光体。 ４ 蛍光体と顔料の水懸濁液に、アクリル系で水
溶性の多価高分子有機酸とゼラチンの水溶液を加
え、PHを4.5以下の条件下で顔料を蛍光体表面に
付着させることを特徴とする顔料付蛍光体の製造
方法。[Scope of Claims] 1. A pigmented phosphor, characterized in that pigment particles are attached to the surface of the phosphor using an acrylic water-soluble polyvalent polymeric organic acid and gelatin. 2. The pigmented phosphor according to claim 1, wherein the acrylic water-soluble polyvalent polymeric organic acid is polyacrylic acid. 3. The pigmented phosphor according to claim 1, wherein the acrylic water-soluble polyvalent polymeric organic acid is polymethacrylic acid. 4. Adding an aqueous solution of an acrylic water-soluble polyvalent polymeric organic acid and gelatin to an aqueous suspension of the phosphor and pigment, and attaching the pigment to the phosphor surface under conditions where the pH is 4.5 or less. A method for producing a pigmented phosphor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7285579A JPS55164283A (en) | 1979-06-08 | 1979-06-08 | Fluorescent substance with pigment and its preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7285579A JPS55164283A (en) | 1979-06-08 | 1979-06-08 | Fluorescent substance with pigment and its preparation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55164283A JPS55164283A (en) | 1980-12-20 |
| JPS6241274B2 true JPS6241274B2 (en) | 1987-09-02 |
Family
ID=13501388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7285579A Granted JPS55164283A (en) | 1979-06-08 | 1979-06-08 | Fluorescent substance with pigment and its preparation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55164283A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03504481A (en) * | 1989-09-19 | 1991-10-03 | セレッテ ソシ エテ アノニム | A device that fixes a vehicle on a mounting base and adjusts the vehicle height for vehicle repair. |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH075883B2 (en) * | 1990-04-21 | 1995-01-25 | 日亜化学工業株式会社 | Regeneration method of phosphor |
| KR19980060800A (en) * | 1996-12-31 | 1998-10-07 | 손욱 | Surface treatment method of green phosphor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50142476A (en) * | 1974-04-09 | 1975-11-17 | ||
| JPS52133088A (en) * | 1976-04-30 | 1977-11-08 | Dainippon Toryo Co Ltd | Production of fluorescensubstance coated with pigment |
| JPS533980A (en) * | 1976-06-30 | 1978-01-14 | Dainippon Toryo Co Ltd | Production of fluorescent substance coated with pigment |
| JPS5376185A (en) * | 1976-12-20 | 1978-07-06 | Hitachi Ltd | Treating method for pigment-ataached fluorescent substance |
| JPS543677A (en) * | 1977-06-09 | 1979-01-11 | Toshiba Electric Equip | Temperature controlling device |
| JPS5523103A (en) * | 1976-11-22 | 1980-02-19 | Dainippon Toryo Co Ltd | Treatment of pigment-adhered fluophor |
-
1979
- 1979-06-08 JP JP7285579A patent/JPS55164283A/en active Granted
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50142476A (en) * | 1974-04-09 | 1975-11-17 | ||
| JPS52133088A (en) * | 1976-04-30 | 1977-11-08 | Dainippon Toryo Co Ltd | Production of fluorescensubstance coated with pigment |
| JPS533980A (en) * | 1976-06-30 | 1978-01-14 | Dainippon Toryo Co Ltd | Production of fluorescent substance coated with pigment |
| JPS5523103A (en) * | 1976-11-22 | 1980-02-19 | Dainippon Toryo Co Ltd | Treatment of pigment-adhered fluophor |
| JPS5376185A (en) * | 1976-12-20 | 1978-07-06 | Hitachi Ltd | Treating method for pigment-ataached fluorescent substance |
| JPS543677A (en) * | 1977-06-09 | 1979-01-11 | Toshiba Electric Equip | Temperature controlling device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03504481A (en) * | 1989-09-19 | 1991-10-03 | セレッテ ソシ エテ アノニム | A device that fixes a vehicle on a mounting base and adjusts the vehicle height for vehicle repair. |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55164283A (en) | 1980-12-20 |
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