GB2103197B - Process for bleaching natural chalk - Google Patents

Process for bleaching natural chalk

Info

Publication number
GB2103197B
GB2103197B GB08216149A GB8216149A GB2103197B GB 2103197 B GB2103197 B GB 2103197B GB 08216149 A GB08216149 A GB 08216149A GB 8216149 A GB8216149 A GB 8216149A GB 2103197 B GB2103197 B GB 2103197B
Authority
GB
United Kingdom
Prior art keywords
natural chalk
bleaching natural
bleaching
chalk
natural
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
Application number
GB08216149A
Other languages
English (en)
Other versions
GB2103197A (en
Inventor
Werner Sebb
Heinrich Dammann
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.)
United Initiators GmbH and Co KG
Original Assignee
United Initiators GmbH and Co KG
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 United Initiators GmbH and Co KG filed Critical United Initiators GmbH and Co KG
Publication of GB2103197A publication Critical patent/GB2103197A/en
Application granted granted Critical
Publication of GB2103197B publication Critical patent/GB2103197B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/38—Coatings with pigments characterised by the pigments
    • D21H19/385—Oxides, hydroxides or carbonates
    • 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
    • C09C1/02—Compounds of alkaline earth metals or magnesium
    • C09C1/021—Calcium carbonates
    • 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
    • C09C1/02—Compounds of alkaline earth metals or magnesium
    • C09C1/021—Calcium carbonates
    • C09C1/022—Treatment with inorganic compounds
    • 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
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • 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
    • C01P2006/12—Surface area

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Paints Or Removers (AREA)
  • Detergent Compositions (AREA)
GB08216149A 1981-06-04 1982-06-03 Process for bleaching natural chalk Expired GB2103197B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813122218 DE3122218A1 (de) 1981-06-04 1981-06-04 Verfahren zum aufhellen von naturkreide

Publications (2)

Publication Number Publication Date
GB2103197A GB2103197A (en) 1983-02-16
GB2103197B true GB2103197B (en) 1985-03-06

Family

ID=6133915

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08216149A Expired GB2103197B (en) 1981-06-04 1982-06-03 Process for bleaching natural chalk

Country Status (4)

Country Link
US (1) US4572825A (enExample)
DE (1) DE3122218A1 (enExample)
FR (1) FR2507194A1 (enExample)
GB (1) GB2103197B (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8711094D0 (en) * 1987-05-11 1987-06-17 Ecc Int Ltd Natural calcium carbonate ores
SE469475B (sv) * 1990-10-29 1993-07-12 Eka Nobel Ab Saett att bleka partiklar innehaallande kalciumkarbonat
US7105139B2 (en) 2002-04-25 2006-09-12 Imerys Pigments, Inc. Stabilization of the viscosity of formamidine sulfinic acid bleached calcium carbonate slurries

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1467470C2 (de) * 1963-10-28 1974-06-12 Pluess-Staufer Ag, Oftringen, Aargau (Schweiz) Verbesserung des Weiß grades von Kreide, Calcit oder Dolomit
GB1285891A (en) * 1968-10-15 1972-08-16 English Clays Lovering Pochin Improvements in or relating to the treatment of minerals
US4239736A (en) * 1979-02-26 1980-12-16 Dresser Industries, Inc. Method for increasing the brightness of limestone

Also Published As

Publication number Publication date
US4572825A (en) 1986-02-25
DE3122218A1 (de) 1982-12-23
FR2507194A1 (fr) 1982-12-10
FR2507194B1 (enExample) 1984-08-24
GB2103197A (en) 1983-02-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee