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Machine translation
1. (WO1992004411) OPTICALLY ISOTROPIC BLENDS OF STYRENE/ACRYLONITRILE AND METHYL METHACRYLATE/GLUTARIMIDE COPOLYMERS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1992/004411    International Application No.:    PCT/US1991/005240
Publication Date: 19.03.1992 International Filing Date: 24.07.1991
Chapter 2 Demand Filed:    26.03.1992    
IPC:
C08L 25/12 (2006.01), C08L 33/24 (2006.01), G02B 1/08 (2006.01)
Applicants: THE DOW CHEMICAL COMPANY [US/US]; 2030 Dow Center, Abbott Road, Midland, MI 48640 (US)
Inventors: MAURER, Brian, R.; (US).
DIBBS, Mitchell, G.; (US)
Agent: DELINE, Douglas, N.; The Dow Chemical Company, P.O. Box 1967, Midland, MI 48641-1967 (US)
Priority Data:
580,022 10.09.1990 US
Title (EN) OPTICALLY ISOTROPIC BLENDS OF STYRENE/ACRYLONITRILE AND METHYL METHACRYLATE/GLUTARIMIDE COPOLYMERS
(FR) MELANGES OPTIQUEMENT ISOTROPES DE POLYMERES DE STYRENE/ACRYLONITRILE ET DE METHACRYLATE DE METHYLE GLUTARIMIDE
Abstract: front page image
(EN)Optically isotropic blends comprising styrene/acrylonitrile copolymers containing from 18 to 32 percent acrylonitrile and methyl methacrylate/glutarimide resins containing from 10 to 50 weight percent methyl methacrylate and having stress optical coefficient of between -500 Brewsters and +500 Brewsters are usefully employed in the preparation of molded objects having reduced birefringence.
(FR)Des mélanges optiquement isotropes comprenant des copolymères de styrène/acrylonitrile contenant de 18 à 32 % d'acrylonitrile et des résines de méthacrylate de méthyle/glutarimide contenant de 10 à 50 % en poids de méthacrylate de méthyle et présentant un coefficient optique de contrainte compris entre -500 Brewsters et +500 Brewsters sont utiles à la fabrication d'objets moulés présentant une biréfringence réduite.
Designated States: CA, JP, KR.
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE).
Publication Language: English (EN)
Filing Language: English (EN)