WO2014141892A1 - Pigment blanc pour enduits - Google Patents

Pigment blanc pour enduits Download PDF

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Publication number
WO2014141892A1
WO2014141892A1 PCT/JP2014/054895 JP2014054895W WO2014141892A1 WO 2014141892 A1 WO2014141892 A1 WO 2014141892A1 JP 2014054895 W JP2014054895 W JP 2014054895W WO 2014141892 A1 WO2014141892 A1 WO 2014141892A1
Authority
WO
WIPO (PCT)
Prior art keywords
titanium oxide
kaolin
refractive index
particles
white pigment
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.)
Ceased
Application number
PCT/JP2014/054895
Other languages
English (en)
Japanese (ja)
Inventor
達朗 村上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mizusawa Industrial Chemicals Ltd
Original Assignee
Mizusawa Industrial Chemicals Ltd
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 Mizusawa Industrial Chemicals Ltd filed Critical Mizusawa Industrial Chemicals Ltd
Priority to JP2015505385A priority Critical patent/JP6352242B2/ja
Publication of WO2014141892A1 publication Critical patent/WO2014141892A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C09C1/40—Compounds of aluminium
    • C09C1/42—Clays
    • 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
    • C09C1/28—Compounds of silicon
    • 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
    • C09C1/0081—Composite particulate pigments or fillers, i.e. containing at least two solid phases, except those consisting of coated particles of one compound
    • C09C1/0084—Composite particulate pigments or fillers, i.e. containing at least two solid phases, except those consisting of coated particles of one compound containing titanium dioxide
    • 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
    • C09C3/06—Treatment with inorganic compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D201/00—Coating compositions based on unspecified macromolecular compounds

Definitions

  • the present invention relates to a white pigment for paint, and more particularly to a white pigment for paint that can be used as a substitute for titanium oxide.
  • Titanium oxide has been widely used as a white pigment for paints because it has a considerably higher refractive index than a resin for paints and thus has a high hiding power. However, since titanium oxide is extremely expensive, an alternative is demanded.
  • Patent Document 1 a powder composition in which various inorganic fine particles are mixed with titanium oxide fine particles is known (for example, Patent Document 1).
  • a powder composition is used as a filler blended in various resins and is not intended for use as a pigment for paints.
  • surface treatment etc. are made
  • an object of the present invention is to provide a white pigment for paint that has a high refractive index of titanium oxide without impairing it and can be used as a substitute for the titanium oxide pigment.
  • the present inventors surprisingly used kaolin ⁇ Al 2 Si 2 O 5 (OH) 4 ⁇ having a considerably lower refractive index than titanium oxide as a main component, By combining this with a small amount of titanium oxide, it was found that an inexpensive white pigment for paints having a refractive index equivalent to that of titanium oxide was obtained, and the present invention was completed.
  • a white pigment for paint which comprises 100 parts by weight of kaolin particles and 25 to 96 parts by weight of titanium oxide particles and has a refractive index of 1.78 or more.
  • the white pigment for paint of the present invention (1) showing a concealment ratio of 95% or more (JIS K 5101-4: 2004); (2) At least a part of the kaolin particles is fired; Is preferred.
  • the white pigment for paints of the present invention has a refractive index in the range of 1.78 or more, particularly 2.72 or less, which is equivalent to the refractive index of titanium oxide (about 2.7), and kaolin particles. Is the subject. Kaolin is a naturally occurring flaky mineral and is therefore very inexpensive. As understood from this, the white pigment for paint of the present invention is extremely useful as a substitute for the titanium oxide white pigment.
  • kaolin is considerably white compared to mica and the like, for example, the whiteness of the liquid dispersed in water is extremely high.
  • the refractive index of kaolin is about 1.6, which is almost the same as the refractive index (about 1.5) of a coating resin (for example, urethane resin), for example. That is, it can be said that kaolin has almost no hiding power when blended in a resin, and it has never been considered at all to use kaolin as a substitute for a titanium oxide white pigment according to conventional common sense.
  • the white pigment for paints of the present invention is composed mainly of kaolin and exhibits a refractive index equivalent to that of titanium oxide.
  • the concealment rate JIS K 5101-4
  • 2004 is 95% or more, the same level as titanium oxide, and does not show the characteristics of kaolin, which is surprising.
  • the main component is kaolin having a refractive index of about 1.6, but a refractive index comparable to that of titanium oxide is obtained because the surface of kaolin particles is covered with a small amount of titanium oxide particles.
  • the white pigment for paint of the present invention reflects the refractive index of titanium oxide.
  • the white pigment for paint according to the present invention is a particle mixture containing kaolin particles and titanium oxide particles, and 25 to 96 parts by mass, particularly 25 to 43 parts by mass of titanium oxide particles with respect to 100 parts by mass of kaolin particles. Include in quantity. If the amount of the titanium oxide particles is less than the above range, the surface of the kaolin particles cannot be sufficiently covered. Therefore, the refractive index is greatly different from that of titanium oxide, and the hiding power when blended with a coating resin is low. It will drop greatly. Moreover, when there is more quantity of a titanium oxide particle than the said range, the cost advantage of a kaolin particle will be impaired and the advantage as a substitute of a titanium oxide will be impaired.
  • the kaolin particles and the titanium oxide particles are used in the amounts as described above, and the surface of the kaolin particles may be coated with the titanium oxide particles. is necessary.
  • kaolin particles and titanium oxide particles are mixed and then mechanically pulverized with a high shear force under dry conditions, for example, dry pulverization using a jet mill, and the amount is about 0.1 to 0.7 ⁇ m.
  • the particle size may be adjusted to the particle size. That is, the coating as described above is realized by rubbing the titanium oxide particles on the surface of the kaolin particles by a high degree of mechanical pulverization. Obtainable.
  • Kaolin particles and titanium oxide particles only exist independently of each other. That is, as shown in a comparative example described later, in this case, only the refractive index of kaolin and the refractive index of titanium oxide are observed.
  • the above surface coating cannot be performed. If the titanium oxide particles are dispersed in water, they aggregate and cannot be used for surface coating of kaolin particles.
  • the kaolin particles described above are collected from nature, and can be used as appropriate after roughly removing the impurities to an appropriate size, but at least a part of the kaolin particles, preferably It is good to use what the whole quantity baked at the temperature of 600 degreeC or more. By such firing, the particle strength can be increased, the surface coating of the titanium oxide particles by mechanical pulverization described above can be performed stably, and the coating resin can be easily blended.
  • the white pigment for paints of the present invention thus obtained can be mixed with a resin in exactly the same manner as the titanium oxide pigment, whereby a white color with an extremely high hiding power can be realized.
  • this white pigment is mainly composed of inexpensive kaolin particles, the cost can be greatly reduced as compared with the titanium oxide pigment, and it is extremely useful as a substitute for the titanium oxide pigment.
  • Example 1 A 2 liter sealed container is charged with 70 g of commercially available kaolin (particle size 0.2 ⁇ m), 70 g of calcined kaolin (particle size 0.8 ⁇ m), and 60 g of titanium oxide (particle size 0.14 ⁇ m), and shaken sufficiently to provide a simple mixture. Got. Subsequently, dry rubbing was performed using a jet mill to obtain a powder sample.
  • Example 2 A powder sample was obtained in the same manner as in Example 1 except that 80 g of commercially available kaolin, 80 g of calcined kaolin, and 40 g of titanium oxide were used.
  • Example 3 A powder sample was obtained in the same manner as in Example 1 except that 51 g of commercially available kaolin, 51 g of calcined kaolin, and 98 g of titanium oxide were used.
  • Example 1 A simple mixture was directly used as a powder sample in the same manner as in Example 1 except that dry rubbing with a jet mill was not performed.
  • Example 2 A powder sample was obtained in the same manner as in Example 1 except that 90 g of commercially available kaolin, 90 g of calcined kaolin and 20 g of titanium oxide were used.
  • the obtained sample was measured by the following method. The results are shown in Tables 1 and 2.
  • surface is a value with respect to 100 mass parts of kaolins.
  • Concealment rate JIS K 5101-4: 2004 Pigment test method-Part 4 Concealment power-Concealment rate test paper method
  • 25 g of powder sample was dispersed in 50 g of clear urethane paint, Applied.
  • the concealment rate was calculated
  • Example 2 As shown in Table 1, the refractive index of Example 1 subjected to dry rubbing greatly exceeded 1.78. As a result, the coating concealment ratio was also high, and the coating film was smooth and glossy.
  • the lower limit of the amount of titanium oxide that can maintain a concealment ratio of 95% or more with a refractive index greatly exceeding 1.78 is 25 parts by mass (Example 2), and the upper limit is 96 parts by mass (Example 3).
  • Example 3 Particularly, in Example 3, 51% of the pigment component was kaolin, but the hiding rate was the same as that of the titanium oxide single paint as a comparative control (Comparative Example 3 in Table 2).
  • Comparative Example 1 of Table 2 when the same amount of titanium oxide as in Example 1 was employed and dry rubbing was not performed, particles having a refractive index of 1.55 and 1.78 were used. More than a single particle was observed alone. At this time, agglomeration of the powder sample was observed in the paint, and it was not possible to uniformly apply to the concealment rate test paper, and the concealment rate could not be evaluated. The coating film was greatly impaired in smoothness, did not show gloss, and could not be used as a paint pigment.
  • Comparative Example 2 in Table 2 when the compounding amount of titanium oxide is 11 parts by mass, the refractive index decreases to 1.57, which is almost equivalent to kaolin, even when dry-type rubbing is performed.
  • the factor for improving the refractive index and dispersibility of the kaolin particles is the titanium oxide coating effect on the kaolin surface, and the effectiveness of dry rubbing with a jet mill has been clarified. Further, it was found that the amount of titanium oxide whose refractive index is improved to a level comparable to that of titanium oxide is in the range of 25 to 96 parts by mass.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Composite Materials (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Paints Or Removers (AREA)

Abstract

La présente invention concerne un pigment blanc pour enduits, qui présente toujours un indice de réfraction élevé dû au dioxyde de titane qu'il contient en son sein et qui peut être utilisé comme alternative à un pigment dioxyde de titane. Le pigment blanc pour enduits selon la présente invention comprend 100 parties en masse de particules de kaolin et de 25 à 96 parties en masse de particules de dioxyde de titane, et est caractérisé en ce qu'il présente un indice de réfraction supérieur ou égal à 1,78.
PCT/JP2014/054895 2013-03-14 2014-02-27 Pigment blanc pour enduits Ceased WO2014141892A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2015505385A JP6352242B2 (ja) 2013-03-14 2014-02-27 塗料用白色顔料

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013052357 2013-03-14
JP2013-052357 2013-03-14

Publications (1)

Publication Number Publication Date
WO2014141892A1 true WO2014141892A1 (fr) 2014-09-18

Family

ID=51536567

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/054895 Ceased WO2014141892A1 (fr) 2013-03-14 2014-02-27 Pigment blanc pour enduits

Country Status (2)

Country Link
JP (1) JP6352242B2 (fr)
WO (1) WO2014141892A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105017812A (zh) * 2014-11-26 2015-11-04 安徽池州博源非金属矿研发中心有限公司 一种复合钛白粉
CN105038327A (zh) * 2014-11-26 2015-11-11 安徽池州博源非金属矿研发中心有限公司 一种白云石复合钛白粉的制备方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61195169A (ja) * 1985-02-25 1986-08-29 Teikoku Kako Kk 二酸化チタン被覆カオリンの製造法
JPS61197511A (ja) * 1985-02-25 1986-09-01 Sunstar Inc 化粧料組成物
JP2000212467A (ja) * 1999-01-28 2000-08-02 Noevir Co Ltd 酸化チタンを含有する透明な油性皮膜により表面が被覆されて成る表面処理粉体及びその製造方法、並びにこれを含有する皮膚用組成物，塗料組成物，樹脂組成物，及び容器
JP2001200195A (ja) * 2000-01-20 2001-07-24 Noevir Co Ltd フォトクロミック性を有する酸化チタンの油性分散体及び親油性酸化チタン粉体とその製造方法、並びにこれらより得られる皮膜形成性もしくは皮膜組成物、及びこれらを含有する組成物
JP2002060680A (ja) * 2000-08-14 2002-02-26 Nippon Paint Co Ltd カチオン電着塗料組成物
JP2006152466A (ja) * 2004-11-26 2006-06-15 Nippon Paper Industries Co Ltd 炭酸カルシウムの粉砕方法
JP2008019295A (ja) * 2006-07-11 2008-01-31 Tokushu Paper Mfg Co Ltd 調湿性塗料
JP2010012407A (ja) * 2008-07-03 2010-01-21 Nippon Paint Co Ltd 複層塗膜形成方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5152835A (en) * 1991-05-08 1992-10-06 Engelhard Corporation Composite titania-calcined kaolin opacifying pigments and method for making and using same
JP2001200179A (ja) * 2000-01-21 2001-07-24 Noevir Co Ltd 表面被覆処理粉体及びその製造方法、並びにそれを含有する皮膚外用剤

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61195169A (ja) * 1985-02-25 1986-08-29 Teikoku Kako Kk 二酸化チタン被覆カオリンの製造法
JPS61197511A (ja) * 1985-02-25 1986-09-01 Sunstar Inc 化粧料組成物
JP2000212467A (ja) * 1999-01-28 2000-08-02 Noevir Co Ltd 酸化チタンを含有する透明な油性皮膜により表面が被覆されて成る表面処理粉体及びその製造方法、並びにこれを含有する皮膚用組成物，塗料組成物，樹脂組成物，及び容器
JP2001200195A (ja) * 2000-01-20 2001-07-24 Noevir Co Ltd フォトクロミック性を有する酸化チタンの油性分散体及び親油性酸化チタン粉体とその製造方法、並びにこれらより得られる皮膜形成性もしくは皮膜組成物、及びこれらを含有する組成物
JP2002060680A (ja) * 2000-08-14 2002-02-26 Nippon Paint Co Ltd カチオン電着塗料組成物
JP2006152466A (ja) * 2004-11-26 2006-06-15 Nippon Paper Industries Co Ltd 炭酸カルシウムの粉砕方法
JP2008019295A (ja) * 2006-07-11 2008-01-31 Tokushu Paper Mfg Co Ltd 調湿性塗料
JP2010012407A (ja) * 2008-07-03 2010-01-21 Nippon Paint Co Ltd 複層塗膜形成方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105017812A (zh) * 2014-11-26 2015-11-04 安徽池州博源非金属矿研发中心有限公司 一种复合钛白粉
CN105038327A (zh) * 2014-11-26 2015-11-11 安徽池州博源非金属矿研发中心有限公司 一种白云石复合钛白粉的制备方法

Also Published As

Publication number Publication date
JP6352242B2 (ja) 2018-07-04
JPWO2014141892A1 (ja) 2017-02-16

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