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Title:
FILLER AND GLASS COMPOSITION, AND METHOD FOR PRODUCING HEXAGONAL PHOSPHATE COMPOUND
Document Type and Number:
WIPO Patent Application WO/2015/076175
Kind Code:
A1
Abstract:
Provided are a filler capable of suppressing the thermal expansion of a glass composition by the addition of a small amount thereof, and exhibiting excellent fluidity when melting the glass composition, and a glass composition containing the filler. Further provided is a production method capable of producing a hexagonal phosphate compound favorable for use as the filler, by using a simple and industrially advantageous method. This filler comprises a hexagonal phosphate compound represented by formula (1) and having a purity of 90% or higher, and is characterized in that the ionic compound content thereof is 1.0 wt% or lower. KaZrb(PO4)3 (1) In formula (1), a represents an integer of 0.8-1.2, and b is an integer which satisfies a+4b=9.

Inventors:
IIDA MIKI (JP)
ONO YASUHARU (JP)
Application Number:
PCT/JP2014/080057
Publication Date:
May 28, 2015
Filing Date:
November 13, 2014
Export Citation:
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Assignee:
TOAGOSEI CO LTD (JP)
International Classes:
C01B25/45; C03C8/20; C03C8/24
Domestic Patent References:
WO2010131731A12010-11-18
Foreign References:
JP2011168491A2011-09-01
JP2005162570A2005-06-23
JP2006111463A2006-04-27
JP2006306677A2006-11-09
JPH0517112A1993-01-26
JP2011136871A2011-07-14
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