G - Physics – 02 – C
Patent
G - Physics
02
C
88/40, 402/412,
G02C 7/04 (2006.01) C08F 220/14 (2006.01) C08F 220/28 (2006.01) G02B 1/04 (2006.01)
Patent
CA 1158398
ABSTRACT OF THE DISCLOSURE Contact lenses and contact shells of light-refracting material consisting essentially of a copolymer of I) from 40 to 90% by weight of methyl methacrylate and II) from 10 to 60% by weight of methyl acrylate and/or ?ters corresponding to formula (1): Image (1) in which R represents H or CH3, R' represents H, CH3 or C2H5 and n = 1 or 2, the sum of I and II amounting to 100% by weight.
362227
Geyer Otto-Christian
Leusner Bernd
Schwabe Peter
Wingler Frank
Aktiengesellschaft Bayer
Fetherstonhaugh & Co.
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