AR058547A1 - Uso de dispersantes para concentrar materias minerales en el agua, dispersiones obtenidas y sus utilizaciones - Google Patents

Uso de dispersantes para concentrar materias minerales en el agua, dispersiones obtenidas y sus utilizaciones

Info

Publication number
AR058547A1
AR058547A1 ARP060105559A ARP060105559A AR058547A1 AR 058547 A1 AR058547 A1 AR 058547A1 AR P060105559 A ARP060105559 A AR P060105559A AR P060105559 A ARP060105559 A AR P060105559A AR 058547 A1 AR058547 A1 AR 058547A1
Authority
AR
Argentina
Prior art keywords
water
dispersants
stage
dispersions obtained
mineral matters
Prior art date
Application number
ARP060105559A
Other languages
English (en)
Original Assignee
Coatex Sas
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 Coatex Sas filed Critical Coatex Sas
Publication of AR058547A1 publication Critical patent/AR058547A1/es

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00Compounds of calcium, strontium, or barium
    • C01F11/18Carbonates
    • C01F11/185After-treatment, e.g. grinding, purification, conversion of crystal morphology
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C1/00Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/02Compounds of alkaline earth metals or magnesium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/06Selection or use of additives to aid disintegrating
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C1/00Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/02Compounds of alkaline earth metals or magnesium
    • C09C1/021Calcium carbonates
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C1/00Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/02Compounds of alkaline earth metals or magnesium
    • C09C1/021Calcium carbonates
    • C09C1/022Treatment with inorganic compounds
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C1/00Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/40Compounds of aluminium
    • C09C1/42Clays
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C3/00Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/006Combinations of treatments provided for in groups C09C3/04 - C09C3/12
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C3/00Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/04Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C3/00Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/04Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
    • C09C3/041Grinding
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C3/00Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/06Treatment with inorganic compounds
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C3/00Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/08Treatment with low-molecular-weight non-polymer organic compounds
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C3/00Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/10Treatment with macromolecular organic compounds
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H19/00Coated paper; Coating material
    • D21H19/36Coatings with pigments
    • D21H19/44Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/64Inorganic compounds
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/60Particles characterised by their size
    • C01P2004/62Submicrometer sized, i.e. from 0.1-1 micrometer
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/22Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H19/00Coated paper; Coating material
    • D21H19/36Coatings with pigments
    • D21H19/38Coatings with pigments characterised by the pigments
    • D21H19/385Oxides, hydroxides or carbonates
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H19/00Coated paper; Coating material
    • D21H19/36Coatings with pigments
    • D21H19/44Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/56Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/58Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof

Abstract

La presente consiste en el uso de agentes dispersantes, en un proceso de fabricacion de una dispersion acuosa de materias minerales, por: a) molienda de bajo contenido en solido (<= 40 %) de dichas materias minerales en el agua sin agente dispersante y/o de ayuda a la molienda; b) concentracion de alto contenido en solido (>= 65 %) por medios mecánicos y/o térmicos, caracterizada en que: al menos un agente dispersante es introducido entre la etapa a) y la etapa b), y/o durante la etapa b), y/o durante y después de la etapa b), en forma de una combinacion: de al menos un homopolímero del ácido acrílico, y de al menos un compuesto mineral fluorado.
ARP060105559A 2005-12-20 2006-12-15 Uso de dispersantes para concentrar materias minerales en el agua, dispersiones obtenidas y sus utilizaciones AR058547A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0512928A FR2894846B1 (fr) 2005-12-20 2005-12-20 Utilisation de dispersants pour concentrer des matieres minerales dans l'eau, dispersions obtenues et leurs utilisations.

Publications (1)

Publication Number Publication Date
AR058547A1 true AR058547A1 (es) 2008-02-13

Family

ID=37111725

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP060105559A AR058547A1 (es) 2005-12-20 2006-12-15 Uso de dispersantes para concentrar materias minerales en el agua, dispersiones obtenidas y sus utilizaciones

Country Status (12)

Country Link
US (1) US20090111906A1 (es)
EP (1) EP1979418A1 (es)
JP (1) JP2009520096A (es)
KR (1) KR20080078672A (es)
CN (1) CN101341217A (es)
AR (1) AR058547A1 (es)
CA (1) CA2629622A1 (es)
FR (1) FR2894846B1 (es)
NO (1) NO20082981L (es)
RU (1) RU2008129817A (es)
TW (1) TW200727975A (es)
WO (1) WO2007072168A1 (es)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2899825B1 (fr) * 2006-04-14 2010-08-13 Coatex Sas Dispersion aqueuse de carbonate de calcium precipite a partir d'au moins un agent dispersant contenant un compose porteur d'ion fluorure.
EP2194103A1 (en) 2008-12-04 2010-06-09 Omya Development Ag Process for manufacturing calcium carbonate materials having a particle surface with improved adsorption properties
FR2940141B1 (fr) 2008-12-19 2010-12-17 Coatex Sas Utilisation de polymeres acryliques neutralises par le lithium comme agents dispersants ou d'aide au broyage en milieu aqueux de matieres minerales
EP2199348A1 (en) 2008-12-19 2010-06-23 Omya Development AG Process for manufacturing aqueous suspensions of mineral materials or dried mineral materials, the obtained products, as well as uses thereof
JP2011105853A (ja) * 2009-11-17 2011-06-02 Fimatec Ltd 湿式粉砕助剤及び微粒重質炭酸カルシウム分散体
ATE547484T2 (de) 2010-05-28 2012-03-15 Omya Development Ag Verfahren zur herstellung von hochfesten suspensionen aus mineralmaterialien
FR2967593B1 (fr) 2010-11-19 2012-12-28 Coatex Sas Utilisation d'amines en combinaison avec des polymeres acryliques dans la fabrication de suspensions aqueuses de matieres minerales
SI2455429T1 (sl) 2010-11-19 2013-12-31 Omya International Ag Postopek za pripravo vodne suspenzije mineralnih snovi z uporabo aminov, kombiniranih z vinil karboksilnimi polimeri
US10889661B2 (en) 2010-12-17 2021-01-12 Basf Se Stable polyacrylic acids, their manufacture and their use
EP2628775A1 (en) * 2012-02-17 2013-08-21 Omya Development AG Mineral material powder with high dispersion ability and use of said mineral material powder
SI2712895T1 (sl) 2012-09-26 2016-09-30 Omya International Ag Reološko stabilna vodna suspenzija mineralne snovi, ki vsebuje organske polimere, ki imajo zmanjšano vsebnost hlapno organske spojine (voc)
US9951196B2 (en) * 2012-10-24 2018-04-24 J.M. Huber Corporation Cationic polyoxometalate-coated alumina trihydrate dispersants
CN106320065B (zh) * 2015-06-26 2018-03-27 池州学院 一种高固含量滑石粉和重质碳酸钙粉浆体的制备方法
CN106835828B (zh) * 2016-12-25 2018-06-01 安徽鑫雅包装制品有限公司 一种低粘度高分散型造纸滑石粉的制备方法
CN110862238B (zh) * 2019-11-28 2022-03-25 中建商品混凝土有限公司 一种搅拌站废浆湿磨用分散剂

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049471A (en) * 1959-01-07 1962-08-14 Chapman Chem Co Preservative composition
US3029153A (en) * 1959-03-04 1962-04-10 Champion Papers Inc Method of treating calcium carbonate
US3669266A (en) * 1969-09-15 1972-06-13 Ethyl Corp Minerals separation process
FR2118347A5 (es) * 1970-12-18 1972-07-28 Omya Sa
JPS5390199A (en) * 1977-01-20 1978-08-08 Shiraishi Kogyo Kaisha Ltd Method of modifying calcium carbonate
LU77723A1 (fr) * 1977-07-11 1979-03-26 Solvay Procede pour la preparation de suspensions aqueuses concentrees de carbonate de calcium
US5593488A (en) * 1995-08-24 1997-01-14 Ecc International Inc. Acid resistant calcium carbonate composition and uses therefor
AU743660B2 (en) * 1996-10-14 2002-01-31 Fp-Pigments Oy Precipitated calcium carbonate and method for the production thereof
GB9627002D0 (en) * 1996-12-27 1997-02-12 Ecc Int Ltd Dispersed aqueous suspensions
US6228161B1 (en) * 1996-12-30 2001-05-08 Minerals Technologies Inc. Use of calcium carbonate in an acidic aqueous media
JP2002533294A (ja) * 1998-12-23 2002-10-08 イメリーズ ミネラルズ リミテッド 濃縮炭酸塩懸濁剤
US6251356B1 (en) * 1999-07-21 2001-06-26 G. R. International, Inc. High speed manufacturing process for precipitated calcium carbonate employing sequential perssure carbonation
FR2802830B1 (fr) * 1999-12-27 2002-06-07 Coatex Sa Utilisation de polymeres hydrosolubles comme agent de dispersion de suspension aqueuse de carbonate de calcium suspensions aqueuses obtenues et leurs utilisations
FR2818166B1 (fr) * 2000-12-20 2003-10-31 Coatex Sas Agent d'aide au broyage et/ou de dispersion de materiaux mineraux en suspension aqueuse. suspensions aqueuses obtenues et leurs utilisations
US6743286B2 (en) * 2001-07-30 2004-06-01 Millennium Inorganic Chemicals, Inc. Inorganic particles and methods of making
US6849245B2 (en) * 2001-12-11 2005-02-01 Catalytic Materials Llc Catalysts for producing narrow carbon nanostructures
US6989142B2 (en) * 2003-02-13 2006-01-24 J. M. Huber Corporation Precipitated calcium carbonate

Also Published As

Publication number Publication date
US20090111906A1 (en) 2009-04-30
NO20082981L (no) 2008-07-24
CN101341217A (zh) 2009-01-07
WO2007072168A1 (fr) 2007-06-28
JP2009520096A (ja) 2009-05-21
CA2629622A1 (fr) 2007-06-28
RU2008129817A (ru) 2010-01-27
FR2894846A1 (fr) 2007-06-22
EP1979418A1 (fr) 2008-10-15
FR2894846B1 (fr) 2008-02-01
TW200727975A (en) 2007-08-01
KR20080078672A (ko) 2008-08-27

Similar Documents

Publication Publication Date Title
AR058547A1 (es) Uso de dispersantes para concentrar materias minerales en el agua, dispersiones obtenidas y sus utilizaciones
ES2606348T3 (es) Método de fabricación de suspensiones acuosas de carbonato de calcio y suspensiones obtenidas así como sus usos
ES2661081T3 (es) Reactivo de liberación para compuestos de vitamina D
ES2638066T3 (es) Procedimiento para reducir el contenido de compuestos orgánicos volátiles solubles en agua en un gas
SV2009003192A (es) Procedimiento de preparacion de halogenuros de n-alquil-naltrexona
ES2494442T3 (es) Composiciones adyuvantes que comprenden un agente de isotonicidad no iónico
AR088137A1 (es) Particulas de carbonato de calcio hidrofobizadas
BR0108486A (pt) Aparelho e método para liberação controlada de um gás
BRPI0923859B8 (pt) composição de agente de diagnóstico, e, método para a produção das nanopartículas
ATE519863T1 (de) Nicht-fluoreszente energieübertragung
PE20070939A1 (es) Concentracion de suspensiones
AR051102A1 (es) Composiciones para el tratamiento de la ropa.
PE20000632A1 (es) Formulaciones de ziprasidona
AR060695A1 (es) Metodo para dispersar almidon pregelatinizado en agua durante la fabricacion de productos de yeso
CO6410281A2 (es) Suspensiones acuosas de riluzol
AR077944A1 (es) Relacion del agente tensioactivo en formulaciones colorantes
ES2599954T3 (es) Suplemento alimenticio
CL2013002966A1 (es) Mezcla estable que comprende particulas modificadas en la superficie; proceso para producir dicha particula; y uso de dichas particulas.
BR112014018028A8 (pt) Processo para preparação de sílicas precipitadas
PE20070809A1 (es) Composicion veterinaria que comprende closantel
BR112014018051A8 (pt) Processo para preparação de sílicas precipitadas
EP1869468A4 (en) COLLOIDAL METAL CONJUGATES
BR112013024128A2 (pt) material de aço com fadiga de suporte com excelentes propriedades de fatiga de contato de laminação e parte do suporte
BRPI0309211A8 (pt) Procedimento para detecção e localização de vestígios de sangue e composição destinada à detecção de vestígios de sangue.
BRPI0519696A2 (pt) composição aquosa, processo para obter metal de materiais contendo metal, e, uso de tensoativos

Legal Events

Date Code Title Description
FA Abandonment or withdrawal