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Title:
HIGH BUILD DISPERSIONS
Document Type and Number:
WIPO Patent Application WO2002072653
Kind Code:
A3
Abstract:
An aqueous dispersion of non-melt-processible fluoropolymer, process for making same and concentrated dispersion and powder obtained from the dispersion. The fluoropolymer particles of the dispersion have a standard specific gravity (SSG) of less than 2.225 and comprise a core of high molecular weight polytetrafluoroethylene and a shell of lower molecular weight polytetrafluoroethylene or modified polytetrafluoroethylene. At least about 1.5 weight % of the fluoropolymer particles comprise substantially rod-shaped particles having a length to diameter ratio greater than about 5.

Inventors:
JONES CLAY WOODWARD
CAVANAUGH ROBERT JOHN
KRUKOWIAK WALTER
MORGAN RICHARD A
TREAT THEODORE A
Application Number:
PCT/US2002/009056
Publication Date:
April 03, 2003
Filing Date:
March 13, 2002
Export Citation:
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Assignee:
DU PONT (US)
International Classes:
C08F2/00; C08F14/26; C08F259/08; C09D127/18; C08F2/22; C09D151/00; (IPC1-7): C08F259/08; C09D151/00; C08F14/26; C08F114/26
Foreign References:
EP0322877A21989-07-05
EP0481509A21992-04-22
US5296165A1994-03-22
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