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CA2034190A1 - Method of producing colored precipitated calcium carbonate - Google Patents

Method of producing colored precipitated calcium carbonate

Info

Publication number
CA2034190A1
CA2034190A1 CA 2034190 CA2034190A CA2034190A1 CA 2034190 A1 CA2034190 A1 CA 2034190A1 CA 2034190 CA2034190 CA 2034190 CA 2034190 A CA2034190 A CA 2034190A CA 2034190 A1 CA2034190 A1 CA 2034190A1
Authority
CA
Canada
Prior art keywords
calcium carbonate
precipitated calcium
colored precipitated
producing colored
aqueous slurry
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.)
Granted
Application number
CA 2034190
Other languages
French (fr)
Other versions
CA2034190C (en
Inventor
Osamu Ebinuma
Takashi Sakaguchi
Akira Yokoi
Yoshiki Saitoh
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.)
New Oji Paper Co Ltd
Original Assignee
Oji Paper Co 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 Oji Paper Co Ltd filed Critical Oji Paper Co Ltd
Priority to CA 2034190 priority Critical patent/CA2034190C/en
Publication of CA2034190A1 publication Critical patent/CA2034190A1/en
Application granted granted Critical
Publication of CA2034190C publication Critical patent/CA2034190C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Paper (AREA)

Abstract

A colored precipitated calcium carbonate having a strong color fastness in water is produced by preparing an aqueous slurry containing calcium hydroxide and a water-soluble dye, for example, a direct dye, introducing a carbon dioxide-containing gas into the aqueous slurry, and collecting the resultant colored precipitated calcium carbonate from the aqueous slurry at a pH of 8.2 or more thereof.
CA 2034190 1991-01-15 1991-01-15 Method of producing colored precipitated calcium carbonate Expired - Lifetime CA2034190C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2034190 CA2034190C (en) 1991-01-15 1991-01-15 Method of producing colored precipitated calcium carbonate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2034190 CA2034190C (en) 1991-01-15 1991-01-15 Method of producing colored precipitated calcium carbonate

Publications (2)

Publication Number Publication Date
CA2034190A1 true CA2034190A1 (en) 1992-07-16
CA2034190C CA2034190C (en) 1998-12-01

Family

ID=4146841

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2034190 Expired - Lifetime CA2034190C (en) 1991-01-15 1991-01-15 Method of producing colored precipitated calcium carbonate

Country Status (1)

Country Link
CA (1) CA2034190C (en)

Also Published As

Publication number Publication date
CA2034190C (en) 1998-12-01

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121202