PREPARATION OF SURFACE-TREATED PLATE BARIUM SULFATE

Title:

PREPARATION OF SURFACE-TREATED PLATE BARIUM SULFATE

Document Type and Number:

Japanese Patent JPS59122553

Kind Code:

A

Abstract:

PURPOSE: To provide a plate BaSO4 having excellent affinity with a resin, and capable of imparting excellent physical properties to a molded resin or paint, by modifying the inert surface of plate BaSO4 by the deposition of hydrous silica.

CONSTITUTION: The objective surface-treated plate BaSO4 is prepared by adding an aqueous solution of alkali metal silicate to an aqueous slurry of plate BaSO4 containing Ba2+ to deposite barium silicate to the surface of plate BaSO4, and adding a mineral acid to the slurry to hydrolyze the barium silicate and deposit in the form of hydrous silica to the surface of barium sulfate. The product may be further treated with a silane coupling agent of deposited with hydrated oxide of metals such as Al, Ti, Zn, etc. to further improve the affinity of the plate BaSO4 with resin.

Inventors:

SHINOZUKA KIYOSHI
OOTSU KOUICHI
FUKUMOTO HIROSHI

Application Number:

JP22984282A

Publication Date:

July 16, 1984

Filing Date:

December 28, 1982

Export Citation:

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Assignee:

ONAHAMA SAKAI KAGAKU KK

International Classes:

C09C1/00; C01F11/46; C08K9/02; C09C1/02; C09C3/00; C09C3/04; C09D7/12; (IPC1-7): C01F11/46; C09C1/02

Domestic Patent References:

JPS5253794A	1977-04-30
JPS555548A	1980-01-16
JP57229843A

Foreign References:

US2346188A

1944-04-11

Attorney, Agent or Firm:

Makino Itsuro

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