KR890011959A - 유색 진주안료 및 그 제조방법 - Google Patents

유색 진주안료 및 그 제조방법 Download PDF

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Publication number
KR890011959A
KR890011959A KR1019890000610A KR890000610A KR890011959A KR 890011959 A KR890011959 A KR 890011959A KR 1019890000610 A KR1019890000610 A KR 1019890000610A KR 890000610 A KR890000610 A KR 890000610A KR 890011959 A KR890011959 A KR 890011959A
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South Korea
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dye
particles
pearl pigment
pigment
mica
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KR1019890000610A
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English (en)
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마리아 코르피 타이나
야아코 오스카리 힛티넨 셉포
유하니 바파아오크사 팩카
Original Assignee
헤익키 로쉔퀴스트, 한누 하르토카리
케미라 오이
한누 하르토리카리
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Publication of KR890011959A publication Critical patent/KR890011959A/ko

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0001—Post-treatment of organic pigments or dyes
    • C09B67/0004—Coated particulate pigments or dyes
    • 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
    • C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
    • 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
    • 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
    • C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
    • C09C2200/10—Interference pigments characterized by the core material
    • C09C2200/1004—Interference pigments characterized by the core material the core comprising at least one inorganic oxide, e.g. Al2O3, TiO2 or SiO2
    • 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
    • C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
    • C09C2200/10—Interference pigments characterized by the core material
    • C09C2200/102—Interference pigments characterized by the core material the core consisting of glass or silicate material like mica or clays, e.g. kaolin
    • 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
    • C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
    • C09C2200/30—Interference pigments characterised by the thickness of the core or layers thereon or by the total thickness of the final pigment particle
    • C09C2200/302—Thickness of a layer with high refractive material
    • 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
    • C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
    • C09C2200/40—Interference pigments comprising an outermost surface coating
    • C09C2200/402—Organic protective coating
    • C09C2200/403—Low molecular weight materials, e.g. fatty acids
    • C09C2200/404—Low molecular weight materials, e.g. fatty acids comprising additional functional groups, e.g. -NH2, -C=C- or -SO3
    • 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
    • C09C2220/00—Methods of preparing the interference pigments
    • C09C2220/10—Wet methods, e.g. co-precipitation
    • 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
    • C09C2220/00—Methods of preparing the interference pigments
    • C09C2220/10—Wet methods, e.g. co-precipitation
    • C09C2220/103—Wet methods, e.g. co-precipitation comprising a drying or calcination step after applying each layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S106/00—Compositions: coating or plastic
    • Y10S106/03—Mica
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2911—Mica flake
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

내용 없음

Description

유색 진주안료 및 그 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (10)

  1. 염료 또는 유색안료를 함유하고 산화금속으로 코팅된 운모입자 또는 다른 판상 규산염입자를 기재로한 진주안료에 있어서, 그 안료입자가 운모입자 또는 다른 규산염입자의 산화금속으로 코팅된 다공성 실리카 골격으로 구성되고 거의 또는 전혀 양이온을 함유하지 않고 그리고 그들에 부착된 적어도 한가지 이상의 염료 또는 적어도 한가지 이상의 유색안료를 가지는 것을 특징으로 하는 진주안료.
  2. 제1항에 있어서, 소위 흑운모(보다 바람직한 것은 금운모)인 운모입자를 기재로한 것을 특징으로 하는 진주안료.
  3. 제1항 또는 제2항에 있어서, 염색된 안료의 총량으로부터 계산하여 1-50중량%의 염료를 함유하는 염료 함유 진주안료인 것을 특징으로 하는 진주안료.
  4. 전항중 어느 한 항에 있어서, 산화금속 코팅제가 이산화티타늄 및/또는 이산화지르코늄(이산화티타늄이 바람직함)인 것을 특징으로 하는 진주안료.
  5. 전항중 어느 한 항에 있어서, 운모입자 또는 다른 규산염입자의 골격위의 산화금속층의 두께가 약0.01-0.5㎛(약 0.1-0.3㎛가 바람직함)인 것을 특징으로 하는 진주안료.
  6. 전항중 어느 한 항에 있어서, 염료가 아조염료 또는 퀴논염료인 것을 특징으로 하는 진주안료.
  7. a) 운모입자 또는 다른 판상규산염입자와 산화금속 코팅제로 산화금속 코팅제가 산에 거의 녹지않거나 불용성인 초기단계 제품을 제조하고,
    b) 이와같이 얻어진 코팅된 운모입자 또는 다른 판상규산염입자를 무기산과 가능한한 약간의 산화제로 걸러내어,
    c) 운모입자 또는 다른 판상규산염입자의 산화금속으로 코팅된 양이온이, 거의 또는 전혀 함유되지 않은 다공성 실리카골격을 적어도 한가지 이상의 염료 또는 적어도 한가지 이상의 유색안료로서 염색하는 것을 특징으로 하는 산화금속으로 코팅된 운모입자 또는 다른 판상규산염입자를 기재로한 염료함유 또는 유색 안료함유 진주안료의 제조방법.
  8. 제7항에 있어서, c) 단계가 안료 및 하나의 유기염료를 뜨거운물 또는 유기용매속에서 혼합시키고, 물 또는 유기용매를 증발시켜 얻은 생성물을 헹구어 건조시키는 직접 염색법인 것을 특징으로 진주안료의 제조방법.
  9. 제7항에 있어서, c) 단계가 안료 및 염료를 물속에서 각각 슬러리화 시키고 필요에 따라서 염료에 분산제, 유기산, pH조절제 및/또는 기타 첨가제를 첨가시켜 얻은 혼합물을 그 혼합물의 비등점 또는 그 비등접에 근접되게 가열시키고, 일정기간동안 그 온도에서 유지시키고, 그후 본 안료를 걸르고 헹구어 건조시키는 직접 염색법인 것을 특징으로 하는 진주안료의 제조방법.
  10. 제7-9항중의 어느 한 항에 있어서, 흑운모(금운모가 바람직함)를 사용하고, 산화금속이 이산화티타늄 및/또는 이산화지르코늄(이산화티타늄이 바람직함)이며, 염료는 아조염료 또는 퀴논염료인 것을 특징으로 하는 진주안료의 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019890000610A 1988-01-22 1989-01-20 유색 진주안료 및 그 제조방법 KR890011959A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI880306A FI78924C (fi) 1988-01-22 1988-01-22 Faergaemnes- eller faergpigmenthaltigt paerlemopigment och ett foerfarande foer dess framstaellning.
FI880306 1988-01-22

Publications (1)

Publication Number Publication Date
KR890011959A true KR890011959A (ko) 1989-08-23

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KR1019890000610A KR890011959A (ko) 1988-01-22 1989-01-20 유색 진주안료 및 그 제조방법

Country Status (6)

Country Link
US (1) US5061317A (ko)
EP (1) EP0325484A1 (ko)
JP (1) JPH01308462A (ko)
KR (1) KR890011959A (ko)
BR (1) BR8900236A (ko)
FI (1) FI78924C (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100885079B1 (ko) * 2007-10-23 2009-02-25 금호타이어 주식회사 펄을 포함하는 타이어 고무조성물

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI78924C (fi) * 1988-01-22 1989-10-10 Kemira Oy Faergaemnes- eller faergpigmenthaltigt paerlemopigment och ett foerfarande foer dess framstaellning.
DE4009567A1 (de) * 1990-03-24 1991-09-26 Merck Patent Gmbh Beschichtung mit organischen farbstoffen
DE59209413D1 (de) * 1991-10-18 1998-08-13 Merck Patent Gmbh Gefärbte und beschichtete plättchenförmige pigmente
DE4211560A1 (de) * 1992-04-07 1993-10-14 Merck Patent Gmbh Verfahren zur Herstellung von Kompositpigmenten
US5584922A (en) * 1994-09-14 1996-12-17 Ciba-Geigy Corporation Stir-in organic pigments
DE19511696A1 (de) * 1995-03-30 1996-10-02 Basf Ag Glanzpigmente auf Basis reduzierter titandioxidbeschichteter silikatischer Plättchen
WO1998058257A1 (de) * 1997-06-18 1998-12-23 Innova Gesellschaft Zur Entwicklung Und Vermarktung Innovativer Produkte Mbh Magnetische partikel mit biologisch aktiven rezeptoren
US6113683A (en) * 1997-11-25 2000-09-05 Ciba Specialty Chemicals Corporation Colored pearlescent pigments
DE19831869A1 (de) * 1998-07-16 2000-01-20 Merck Patent Gmbh Farbgebung mit Perlglanzpigmenten im Lebensmittel- und Pharmabereich
TW473519B (en) * 1999-03-23 2002-01-21 Shiseido Co Ltd Pleochroism powder and pleochroism printed article
US6443996B1 (en) * 1999-04-16 2002-09-03 Maurice W. Mihelich Decorative dye colorant for natural stone
US7594962B2 (en) 2003-01-17 2009-09-29 Ciba Specialty Chemicals Corporation Process for the production of porous inorganic materials or a matrix material containing nanoparticles
CN100362057C (zh) * 2005-12-14 2008-01-16 林一中 多层涂覆的随角异色干涉颜料及其制备方法
EP1984564A4 (en) 2006-02-03 2013-04-03 Nanopaper Llc FUNCTIONALIZATION OF PAPER COMPONENTS
US7820563B2 (en) 2006-10-23 2010-10-26 Hawaii Nanosciences, Llc Compositions and methods for imparting oil repellency and/or water repellency
DE102006051893A1 (de) * 2006-10-31 2008-05-08 Eckart Gmbh & Co. Kg Metalleffektpigmente für den Einsatz in der kathodischen Elektrotauchlackierung, Verfahren zu deren Herstellung und Verwendung derselben sowie Elektrotauchlack
CN102732069B (zh) * 2012-07-12 2014-04-30 杭州弗沃德精细化工有限公司 高分散性超细云母粉的制备工艺
JP2015034218A (ja) * 2013-08-08 2015-02-19 学校法人千葉工業大学 パール顔料、パール顔料を含有する化粧剤
KR101541009B1 (ko) * 2013-10-28 2015-08-03 씨큐브 주식회사 식물성 천연 염료를 이용한 유색 광택 안료 및 그 제조 방법

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE218156C (ko) *
CA911270A (en) * 1972-10-03 W. Kohlschutter Hans Titanium dioxide coatings
DE2429762C2 (de) * 1974-06-21 1984-08-30 Merck Patent Gmbh, 6100 Darmstadt Farbstoffhaltige Glanzpigmente
US4192691A (en) * 1978-10-26 1980-03-11 The Mearl Corporation Metal oxide platelets as nacreous pigments
DE2928287A1 (de) * 1979-07-13 1981-01-29 Merck Patent Gmbh Perlglanzpigmente, verfahren zu ihrer herstellung und ihre verwendung
JPS5838764A (ja) * 1981-08-31 1983-03-07 Pentel Kk 顔料の製造法
FI66821C (fi) * 1982-02-12 1984-12-10 Kemira Oy Amorfa skiktade kiseldioxidpartiklar med stor specifik yta saett att framstaella dessa samt deras anvaendning
SU1402603A1 (ru) * 1985-09-27 1988-06-15 Государственный Всесоюзный Проектный И Научно-Исследовательский Институт Неметаллорудной Промышленности Способ получени перламутрового пигмента
FI77881C (fi) * 1987-04-14 1989-05-10 Kemira Oy Ytbelagda silikatpartiklar.
FI78924C (fi) * 1988-01-22 1989-10-10 Kemira Oy Faergaemnes- eller faergpigmenthaltigt paerlemopigment och ett foerfarande foer dess framstaellning.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100885079B1 (ko) * 2007-10-23 2009-02-25 금호타이어 주식회사 펄을 포함하는 타이어 고무조성물

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Publication number Publication date
JPH01308462A (ja) 1989-12-13
EP0325484A1 (en) 1989-07-26
BR8900236A (pt) 1989-09-12
FI78924C (fi) 1989-10-10
US5061317A (en) 1991-10-29
FI78924B (fi) 1989-06-30
FI880306A0 (fi) 1988-01-22

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