NO954705L - Fremgangsmåte for behandling av titandioksydpigmenter, titandioksydpigment og anvendelse derav - Google Patents

Fremgangsmåte for behandling av titandioksydpigmenter, titandioksydpigment og anvendelse derav

Info

Publication number
NO954705L
NO954705L NO954705A NO954705A NO954705L NO 954705 L NO954705 L NO 954705L NO 954705 A NO954705 A NO 954705A NO 954705 A NO954705 A NO 954705A NO 954705 L NO954705 L NO 954705L
Authority
NO
Norway
Prior art keywords
titanium dioxide
pigment
layer
alumina
dioxide pigments
Prior art date
Application number
NO954705A
Other languages
English (en)
Norwegian (no)
Other versions
NO954705D0 (no
Inventor
Anny Guez
Remy Lorang
Original Assignee
Rhone Poulenc Chimie
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9469060&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=NO954705(L) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rhone Poulenc Chimie filed Critical Rhone Poulenc Chimie
Publication of NO954705D0 publication Critical patent/NO954705D0/no
Publication of NO954705L publication Critical patent/NO954705L/no

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
    • C09C1/36—Compounds of titanium
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/69—Water-insoluble compounds, e.g. fillers, pigments modified, e.g. by association with other compositions prior to incorporation in the pulp or paper
    • 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
    • C09C1/36—Compounds of titanium
    • C09C1/3607—Titanium dioxide
    • C09C1/3653—Treatment with inorganic compounds
    • C09C1/3661—Coating
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
    • C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
    • C01P2004/84—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases one phase coated with the other
    • C01P2004/88—Thick layer coatings
    • 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
    • C01P2006/40—Electric properties
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/675—Oxides, hydroxides or carbonates
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • Y10T428/257—Iron oxide or aluminum oxide
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/258—Alkali metal or alkaline earth metal or compound thereof
    • 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
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31971—Of carbohydrate
    • Y10T428/31993—Of paper
    • Y10T428/31996—Next to layer of metal salt [e.g., plasterboard, etc.]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Paper (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
NO954705A 1994-11-23 1995-11-21 Fremgangsmåte for behandling av titandioksydpigmenter, titandioksydpigment og anvendelse derav NO954705L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9414017A FR2727125B1 (fr) 1994-11-23 1994-11-23 Procede de traitement de pigments de dioxyde de titane, nouveau pigment de dioxyde de titane et son utilisation dans la fabrication du papier

Publications (2)

Publication Number Publication Date
NO954705D0 NO954705D0 (no) 1995-11-21
NO954705L true NO954705L (no) 1996-05-24

Family

ID=9469060

Family Applications (1)

Application Number Title Priority Date Filing Date
NO954705A NO954705L (no) 1994-11-23 1995-11-21 Fremgangsmåte for behandling av titandioksydpigmenter, titandioksydpigment og anvendelse derav

Country Status (17)

Country Link
US (2) US5665466A (ru)
EP (1) EP0713904B1 (ru)
JP (1) JP2942182B2 (ru)
KR (1) KR0180009B1 (ru)
CN (1) CN1068365C (ru)
AT (1) ATE194996T1 (ru)
AU (1) AU680156B2 (ru)
BR (1) BR9505277A (ru)
CA (1) CA2163484C (ru)
DE (1) DE69518132T2 (ru)
ES (1) ES2151036T3 (ru)
FI (1) FI955620A (ru)
FR (1) FR2727125B1 (ru)
NO (1) NO954705L (ru)
RU (1) RU2116324C1 (ru)
TW (1) TW343222B (ru)
ZA (1) ZA959785B (ru)

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9514388D0 (en) * 1995-07-13 1995-09-13 Tioxide Group Services Ltd Titanium dioxide pigments
US5886069A (en) * 1995-11-13 1999-03-23 E. I. Du Pont De Nemours And Company Titanium dioxide particles having substantially discrete inorganic particles dispersed on their surfaces
JP3686167B2 (ja) * 1996-06-10 2005-08-24 日鉄鉱業株式会社 多層膜被覆粉体
KR100696225B1 (ko) * 1998-05-14 2007-03-20 쇼와 덴코 가부시키가이샤 산화티탄졸, 박막 및 그들의 제조법
AU5163400A (en) 1999-05-26 2000-12-12 Procter & Gamble Company, The Liquid detergent compositions comprising polymeric suds enhancers
US7939601B1 (en) 1999-05-26 2011-05-10 Rhodia Inc. Polymers, compositions and methods of use for foams, laundry detergents, shower rinses, and coagulants
US20050124738A1 (en) * 1999-05-26 2005-06-09 The Procter & Gamble Company Compositions and methods for using zwitterionic polymeric suds enhancers
ES2317838T3 (es) * 1999-05-26 2009-05-01 Rhodia Inc. Polimeros en bloque, composiciones y metodos de utilizacion de espumas, detergentes para la lavanderia, agentes de aclarado para ducha y coagulantes.
AU4860000A (en) 1999-05-26 2000-12-12 Procter & Gamble Company, The Liquid detergent compositions comprising block polymeric suds enhancers
US7241729B2 (en) * 1999-05-26 2007-07-10 Rhodia Inc. Compositions and methods for using polymeric suds enhancers
DE60011472T2 (de) * 1999-09-14 2005-06-30 Ishihara Sangyo Kaisha Ltd. Titandioxidpigment, verfahren zur herstellung desselben und dieses enthaltende harzzusammensetzung
US6342099B1 (en) * 2000-05-01 2002-01-29 Millennium Inorganic Chemicals, Inc. Coated titanium dioxide pigments and processes for production and use
US6376631B1 (en) 2000-09-27 2002-04-23 Rhodia, Inc. Processes to control the residual monomer level of copolymers of tertiary amino monomer with a vinyl-functional monomer
US20030226648A1 (en) * 2002-06-06 2003-12-11 Mcdonnell William T. Multiple ply paperboard material having improved oil and grease resistance and stain masking properties and method for forming same
DE10236366A1 (de) * 2002-08-08 2004-02-19 Kronos International, Inc. Verfahren zur Oberflächenbehandlung eines Titandioxid-Pigments
KR20050088347A (ko) * 2002-12-30 2005-09-05 이 아이 듀폰 디 네모아 앤드 캄파니 종이 적층물에 유용한 수분산성 이산화티탄 안료의 제조방법
DE50307588D1 (de) * 2003-05-22 2007-08-09 Kemira Pigments Oy Anorganische lichtabsorbierende mikropigmente und deren verwendung
DE10332650A1 (de) 2003-07-18 2005-02-10 Kronos International, Inc. Verfahren zur Oberflächenbehandlung eines Titandioxid-Pigments
US20050129634A1 (en) * 2003-12-16 2005-06-16 Frerichs Scott R. Passivated nano-titanium dioxide particles and methods of making the same
US7824486B2 (en) 2005-09-27 2010-11-02 E. I. Du Pont De Nemours And Company Paper laminates
US20070068423A1 (en) * 2005-09-27 2007-03-29 Thiele Erik S Titanium dioxide pigment useful in paper laminates
US7842131B2 (en) * 2006-01-30 2010-11-30 Kronos International Inc High opacity TiO2 pigment and production method
DE102006004344B4 (de) * 2006-01-30 2008-11-13 Kronos International, Inc. Titandioxid-Pigment mit hoher Opazität und Verfahren zur Herstellung
US7288146B1 (en) * 2006-03-16 2007-10-30 Kronos International, Inc. Titanium dioxide pigment coated with hollow bodies and method for its manufacture
DE102006012564B4 (de) 2006-03-16 2008-11-06 Kronos International, Inc. Mit Mikrohohlkugeln beschichtetes Titandioxid-Pigment und Verfahren zur Herstellung
JP5075587B2 (ja) * 2007-11-02 2012-11-21 サカタインクス株式会社 オフセット印刷用水性プレコート剤
US20090201282A1 (en) * 2008-02-11 2009-08-13 Qualcomm Mems Technologies, Inc Methods of tuning interferometric modulator displays
JP5136395B2 (ja) * 2008-12-25 2013-02-06 堺化学工業株式会社 二酸化チタン顔料とその製造方法
JP5136519B2 (ja) * 2009-06-26 2013-02-06 堺化学工業株式会社 二酸化チタン粒子とその製造方法
DE112011100613B4 (de) 2010-02-19 2017-07-06 Ferro Corp. Pigment-Additive zur Verbesserung der solaren Reflexion
DE102011015856A1 (de) * 2011-04-01 2012-10-04 Kronos International, Inc. Verfahren zur Oberflächenbehandlung eines Titandioxid-Pigments
CN103620116B (zh) * 2011-06-28 2016-08-17 纳幕尔杜邦公司 具有降低的光活性和抗微生物特性的处理过的无机颜料以及它们在纸材浆液中的用途
CN102532952B (zh) * 2011-12-30 2013-11-27 锦州钛业有限公司 一种层压纸专用型二氧化钛颜料的制备方法
TWI613261B (zh) * 2012-06-29 2018-02-01 克洛諾斯國際有限公司 將無機色素粒子作表面處理的方法
ES2790978T3 (es) 2012-11-13 2020-10-30 Chemours Co Fc Llc Pigmentos autodispersantes
ES2616038T3 (es) 2012-11-13 2017-06-09 The Chemours Company Tt, Llc Laminados preparados a partir de papel decorativo que comprenden pigmentos autodispersantes
CA2890973C (en) 2012-11-13 2020-12-15 Franck Andre VANHECKE Process for preparing self-dispersing pigments
US9551112B2 (en) 2012-11-13 2017-01-24 The Chemours Company Tt, Llc Decor paper comprising self-dispersing pigments
US9475942B2 (en) 2012-12-07 2016-10-25 Bunge Amorphic Solutions Llc Aluminum phosphate composite materials and compositions
WO2014104225A1 (ja) * 2012-12-28 2014-07-03 三井化学株式会社 表面被覆粒子およびその用途
CN103709792B (zh) * 2013-12-06 2015-07-15 攀钢集团钛业有限责任公司 一种二氧化钛颜料的制备方法
CN105504885A (zh) * 2014-09-26 2016-04-20 河南佰利联化学股份有限公司 一种金红石型造纸专用钛白粉的制备方法
CN107163623A (zh) * 2017-06-27 2017-09-15 安徽金星钛白（集团）有限公司 一种兼具高热稳定性和遮盖力的钛白粉制备方法
MY198036A (en) * 2018-06-19 2023-07-27 Tronox Llc Treated titanium dioxide pigment, process of making thereof and use thereof in paper manufacture
CN111334092B (zh) * 2020-04-14 2021-11-02 河南佰利联新材料有限公司 一种装饰纸用钛白粉及制备方法
CN112175420A (zh) * 2020-10-09 2021-01-05 安徽金星钛白（集团）有限公司 一种具有高耐光性的金红石型钛白粉粗品及其制备方法与应用

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668776A (en) * 1950-03-18 1954-02-09 New Jersey Zinc Co Titanium dioxide pigment and method of preparing
NL299466A (ru) * 1962-10-18
FR1392413A (fr) * 1963-05-21 1965-03-12 British Titan Products Procédé de production de pigments de bioxyde de titane et d'émulsions aqueuses de ceux-ci
GB1023590A (en) * 1963-05-21 1966-03-23 British Titan Products Titanium dioxide pigments and compositions therefrom
GB1073338A (en) * 1965-07-21 1967-06-21 British Titan Products Mixed coating process
GB1108832A (en) * 1966-04-12 1968-04-03 British Titan Products Coated titanium dioxide particles and production thereof
GB1336292A (en) * 1970-01-15 1973-11-07 Laporte Industries Ltd Treatment of oxide pigments
DE2255826C3 (de) * 1972-11-15 1980-10-02 Bayer Ag, 5090 Leverkusen Herstellung von nicht nachcalcinierten Titandioxidpigmenten mit hoher Vergrauungsstabilität für Harzkompositionen
US3946134A (en) * 1973-07-23 1976-03-23 The Harshaw Chemical Company Method of encapsulating particles and the resultant product
US4383866A (en) * 1981-05-04 1983-05-17 Ppg Industries, Inc. Metal condensed phosphate hardener coated with reaction product from a metal aluminate and/or a metal borate
US4389455A (en) * 1981-08-21 1983-06-21 Fuji Photo Film Co., Ltd. Photographic resin coated paper
US4461810A (en) * 1983-04-04 1984-07-24 E. I. Du Pont De Nemours And Company TiO2 Pigment bearing a coating with cerium cations and sulfate-, phosphate- or silicate anions and laminate and coating containing same
JPS6248775A (ja) * 1985-08-26 1987-03-03 Ishihara Sangyo Kaisha Ltd グラビアインキ組成物
FI85871C (fi) * 1989-06-26 1992-06-10 Kemira Oy Foerfarande foer belaeggning av titandioxidpigment.
US5248556A (en) * 1991-11-15 1993-09-28 Manfred R. Kuehnle Systhetic whitener pigment
US5554216A (en) * 1992-02-26 1996-09-10 E. I. Du Pont De Nemours And Company High gloss durable TiO2 pigment

Also Published As

Publication number Publication date
NO954705D0 (no) 1995-11-21
RU2116324C1 (ru) 1998-07-27
FI955620A0 (fi) 1995-11-22
CA2163484A1 (fr) 1996-05-24
CN1068365C (zh) 2001-07-11
FR2727125A1 (fr) 1996-05-24
CA2163484C (fr) 2000-10-24
EP0713904B1 (fr) 2000-07-26
US5665466A (en) 1997-09-09
FI955620A (fi) 1996-05-24
FR2727125B1 (fr) 1999-01-29
DE69518132T2 (de) 2001-03-22
ZA959785B (en) 1996-05-29
JP2942182B2 (ja) 1999-08-30
EP0713904A1 (fr) 1996-05-29
AU3778395A (en) 1996-05-30
BR9505277A (pt) 1997-10-21
KR960017795A (ko) 1996-06-17
AU680156B2 (en) 1997-07-17
CN1132769A (zh) 1996-10-09
JPH08225323A (ja) 1996-09-03
TW343222B (en) 1998-10-21
ES2151036T3 (es) 2000-12-16
KR0180009B1 (ko) 1999-04-01
US5942281A (en) 1999-08-24
DE69518132D1 (de) 2000-08-31
ATE194996T1 (de) 2000-08-15

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