A POLYMER/CLAY NANOCOMPOSITE HAVING IMPROVED GAS BARRIER COMPRISING A CLAY MATERIAL WITH A MIXTURE OF TWO OR MORE ORGANIC CATIONS AND A PROCESS FOR PREPARING SAME - Patent 1137594

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EP 1 137 594 A1

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(43)	Date of publication:
	04.10.2001 Bulletin 2001/40

(21)	Application number: 99964087.3

(22)	Date of filing: 07.12.1999

(51)	International Patent Classification (IPC)⁷: C01B 33/44, C08K 3/34, C08K 9/04

(86)	International application number:
	PCT/US9928/698

(87)	International publication number:
	WO 0034/180 (15.06.2000 Gazette 2000/24)

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

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Priority:

07.12.1998 US 111199 P
30.11.1999 WO PCT/US99/28336

(71)	Applicant: EASTMAN CHEMICAL COMPANY
	Kingsport, TN 37660 (US)

(72)	Inventors:
	GILMER, John, Walker Kingsport, TN 37660-4754 (US) MATAYABAS, James, Christopher, Jr. Kingsport, TN 37664-4048 (US) BARBEE, Robert, Boyd Kingsport, TN 37663-2131 (US) LAN, Tie Lake Zurich, IL 60047 (US)

(74)	Representative: Brown, Fraser Gregory James
	fJ Cleveland 40-43 Chancery Lane London WC2A 1JQ London WC2A 1JQ (GB)

(54)	A POLYMER/CLAY NANOCOMPOSITE HAVING IMPROVED GAS BARRIER COMPRISING A CLAY MATERIAL WITH A MIXTURE OF TWO OR MORE ORGANIC CATIONS AND A PROCESS FOR PREPARING SAME