PROCESS OF PURIFYING AND PRODUCING HIGH PURITY AROMATIC POLYCARBOXYLIC ACIDS AND DERIVATIVES THEREOF - Patent 1131276

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EP 1 131 276 A1

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(43)	Date of publication:
	12.09.2001 Bulletin 2001/37

(21)	Application number: 99967120.9

(22)	Date of filing: 19.11.1999

(51)	International Patent Classification (IPC)⁷: C07C 51/42

(86)	International application number:
	PCT/US9927/604

(87)	International publication number:
	WO 0031/014 (02.06.2000 Gazette 2000/22)

(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:

24.11.1998 US 109648 P
12.03.1999 US 267499
05.04.1999 US 286262
02.07.1999 US 347486

(71)	Applicant: Lin, Tsong-Dar Vincent
	Houston, TX 77056 (US)

(72)	Inventor:
	Lin, Tsong-Dar Vincent Houston, TX 77056 (US)

(74)	Representative: Harding, Richard Patrick et al
	Marks & Clerk,4220 Nash Court,Oxford Business Park South Oxford OX4 2RU Oxford OX4 2RU (GB)

(54)	PROCESS OF PURIFYING AND PRODUCING HIGH PURITY AROMATIC POLYCARBOXYLIC ACIDS AND DERIVATIVES THEREOF