GB1467506A - Coated pigment composition - Google Patents

Coated pigment composition

Info

Publication number
GB1467506A
GB1467506A GB2311574A GB2311574A GB1467506A GB 1467506 A GB1467506 A GB 1467506A GB 2311574 A GB2311574 A GB 2311574A GB 2311574 A GB2311574 A GB 2311574A GB 1467506 A GB1467506 A GB 1467506A
Authority
GB
United Kingdom
Prior art keywords
pigment
sio
coating
lead
alkali metal
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
GB2311574A
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.)
Mizusawa Industrial Chemicals Ltd
Original Assignee
Mizusawa Industrial Chemicals 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 Mizusawa Industrial Chemicals Ltd filed Critical Mizusawa Industrial Chemicals Ltd
Publication of GB1467506A publication Critical patent/GB1467506A/en
Expired legal-status Critical Current

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
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/06—Treatment with inorganic compounds
    • C09C3/063—Coating
    • 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
    • C09C1/14—Compounds of lead
    • C09C1/20—Lead chromate

Landscapes

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

Abstract

1467506 Glass coated pigments MIZUSAWA KAGAKU KOGYO KK 23 May 1974 [23 May 1973] 23115/74 Heading C4A [Also in Division Cl] A pigment composition having improved abrasion resistance consists of particles composed mainly of an inorganic colour pigment and a continuous solid glass coating covering the surface of said pigment, said coating being formed of a continuous phase composed mainly of an alkali metal polysilicate having an M 2 O : SiO 2 molar ratio of 1 : 5 to 1: 2 wherein M stands for an alkali metal, in which the coating is present in an amount of 3 to 40% by weight based on the pigment particles (as SiO 2 ) and the specific surface area ratio R s , which is the ratio of the surface area of the coated pigment particles to that of the uncoated pigment particles, is at most 1À07. The pigment compositions are suitably made by wetting the pigment particles with an aqueous solution of an alkali metal polysilicate of formula M 2 O . n-SiO 2 where n is 2-5, preferably having a pH of at least 11 and preferably a concentration of 0À5 to 10% by weight as SiO 2 and then drying by evaporation. The process may be repeated several times until the desired coating is achieved. The glass coating preferably comprises 10 to 30% by weight of the pigment and has a glass transition point ranging from 400‹ to 500‹ C. The pigment may be lead chromate or mixtures thereof with lead sulphate and/or lead molybdate, tri-lead tetroxide, cadmium yellow, cadmium red, cadmium mercury red, cobalt violet, ultramarine, prussian blue, chrome green or chrome red.
GB2311574A 1973-05-23 1974-05-23 Coated pigment composition Expired GB1467506A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5674273A JPS507823A (en) 1973-05-23 1973-05-23

Publications (1)

Publication Number Publication Date
GB1467506A true GB1467506A (en) 1977-03-16

Family

ID=13035967

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2311574A Expired GB1467506A (en) 1973-05-23 1974-05-23 Coated pigment composition

Country Status (3)

Country Link
JP (1) JPS507823A (en)
DE (1) DE2424599A1 (en)
GB (1) GB1467506A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5495632A (en) * 1978-01-12 1979-07-28 Toho Ganriyou Kogyo Kk Ultramarine blue composition and its production
JPS62100559A (en) * 1985-10-25 1987-05-11 Maruwa Kogeisha:Kk Coated phosphorescent pigment and production thereof
JPS62198241U (en) * 1986-06-09 1987-12-17
DE3809937A1 (en) * 1988-03-24 1989-10-05 Sf Vollverbundstein PROCESS FOR PRODUCING BUILDING MATERIALS WITH COLORING PROPERTIES
EP0777633A1 (en) * 1995-06-08 1997-06-11 Saint-Gobain Vitrage Curable squeegee paste for printing on glass surfaces, and method for making same
DE19520964A1 (en) * 1995-06-08 1996-12-12 Inst Neue Mat Gemein Gmbh Coated inorganic pigments, process for their preparation and their use
DE19525658C1 (en) * 1995-07-14 1996-11-28 Sekurit Saint Gobain Deutsch Stovable printing paste used for decoration of glass surfaces
JP2002105354A (en) * 2000-09-29 2002-04-10 Catalysts & Chem Ind Co Ltd Ultramarine composition and method for producing the same

Also Published As

Publication number Publication date
DE2424599A1 (en) 1974-12-12
JPS507823A (en) 1975-01-27

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Legal Events

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