GB637304A - Improvements in or relating to modified lead sulphate pigments and the process of manufacturing - Google Patents

Improvements in or relating to modified lead sulphate pigments and the process of manufacturing

Info

Publication number
GB637304A
GB637304A GB6893/47A GB689347A GB637304A GB 637304 A GB637304 A GB 637304A GB 6893/47 A GB6893/47 A GB 6893/47A GB 689347 A GB689347 A GB 689347A GB 637304 A GB637304 A GB 637304A
Authority
GB
United Kingdom
Prior art keywords
lead
equals
mixture
silica
lead sulphate
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
GB6893/47A
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.)
NAT LEAD CO
NL Industries Inc
Original Assignee
NAT LEAD CO
NL Industries Inc
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 NAT LEAD CO, NL Industries Inc filed Critical NAT LEAD CO
Publication of GB637304A publication Critical patent/GB637304A/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
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/14—Compounds of lead
    • 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
    • C01P2006/10—Solid density
    • 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
    • C01P2006/19—Oil-absorption capacity, e.g. DBP values
    • 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
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
    • 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
    • C01P2006/80—Compositional purity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

<PICT:0637304/III/1> Lead sulphate-silica pigments are made by forming a mixture comprising lead monoxide, at least partially converted to lead sulphate, and silica, and heating the mixture at a temperature of from 400 DEG to 700 DEG C. for a period of from 1 to 3 hours, the amounts of lead monoxide, sulphur trioxide, and silica analytically present in the mixture being in such proportions by weight as may be represented by a point lying within the shaded area of the triangular diagram shown bounded by the points 5, 6, 7, 8, where point 5 equals in parts by weight 33PbO : ISO3 : 66SiO2, 6 equals 31PbO : 6SO3 : 63SiO3, 7 equals 72PbO : 13SO3 : 15SiO2, 8 equals 77PbO : 3SO3 : 20SiO2, and where points 2, 3 and 4 represent respectively 100 per cent PbO, SO3, and SiO2. The components of the mixture may be incorporated in forms other than oxides, for instance metallic lead, lead carbonate, lead sulphate or silicic acid.
GB6893/47A 1946-03-27 1947-03-12 Improvements in or relating to modified lead sulphate pigments and the process of manufacturing Expired GB637304A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US637304XA 1946-03-27 1946-03-27

Publications (1)

Publication Number Publication Date
GB637304A true GB637304A (en) 1950-05-17

Family

ID=22051105

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6893/47A Expired GB637304A (en) 1946-03-27 1947-03-12 Improvements in or relating to modified lead sulphate pigments and the process of manufacturing

Country Status (1)

Country Link
GB (1) GB637304A (en)

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