NON-LINEAR OPTICALLY ACTIVE POLYURETHANES HAVING HIGH GLASS TRANSITION TEMPERATURES - Patent 0650502

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EP 0 650 502 A1

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(43)	Date of publication:
	03.05.1995 Bulletin 1995/18

(21)	Application number: 93914688.0

(22)	Date of filing: 21.06.1993

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International Patent Classification (IPC):

G02F 1/ 35^{( . )}
C08G 18/ 38^{( . )}
G02F 1/ 355^{( . )}

C08G 18/ 30^{( . )}
C08G 18/ 67^{( . )}
G02F 1/ 361^{( . )}

(86)	International application number:
	PCT/EP1993/001587

(87)	International publication number:
	WO 1994/001480 (20.01.1994 Gazette 1994/03)

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

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Priority:

06.07.1992 NL 19920001202

(71)	Applicant: Akzo Nobel N.V.
	NL-6824 BM Arnhem (NL)

(72)	Inventors:
	HAMS, Bernardus, Henrikus, Maria NL-5432 HR Cuijk (NL) VAN VEGGEL, Franciscus, Cornelis, Jacobus, Maria NL-7552 La Hengelo (NL) VAN DER VORST, Cornelis, Petrus, Jacobus, Maria NL-6824 JL Arnhem (NL)

(74)	Representative: Schalkwijk, Pieter Cornelis, et al
	AKZO NOBEL N.V. Patent Department (Dept. APTA) P.O. Box 9300 NL-6800 SB Arnhem NL-6800 SB Arnhem (NL)

(54)	NON-LINEAR OPTICALLY ACTIVE POLYURETHANES HAVING HIGH GLASS TRANSITION TEMPERATURES