Title:
FLUOROPOLYMER POWDER AND PROCESS FOR PREPARING THE SAME
Document Type and Number:
WIPO Patent Application WO/1997/040089
Kind Code:
A1
Abstract:
A process for preparing a fluoropolymer powder characterized by densifying a fluoropolymer as a raw powder by means of rolls under such conditions as to give a specific gravity of at least 90 % of the true specific gravity, pulverizing the densified powder, removing fine particles in an amount of 3 to 40 % by weight of the whole particle size distribution of the pulverized product by air classification, and removing coarse particles in an amount of 1 to 20 % by weight of the whole particle size distribution of the pulverized product. The fluoropolymer powder prepared by the above process has a good producibility and a good powder fluidity and can be used as a powder coating which causes no contamination when thermally fused.
More Like This:
Inventors:
TOMIHASHI NOBUYUKI (JP)
MIYATANI TOSHIO (JP)
MIYATANI TOSHIO (JP)
Application Number:
PCT/JP1997/001393
Publication Date:
October 30, 1997
Filing Date:
April 23, 1997
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
TOMIHASHI NOBUYUKI (JP)
MIYATANI TOSHIO (JP)
TOMIHASHI NOBUYUKI (JP)
MIYATANI TOSHIO (JP)
International Classes:
C08J3/12; (IPC1-7): C08J3/12; B29B13/10; B29B9/04
Foreign References:
| JPS5136256A | 1976-03-27 | |||
| JPS63270740A | 1988-11-08 | |||
| JPH05112690A | 1993-05-07 | |||
| JPH0834820A | 1996-02-06 |
Other References:
See also references of EP 0896017A4
Download PDF: