C - Chemistry – Metallurgy – 08 – B
Patent
C - Chemistry, Metallurgy
08
B
C08B 37/16 (2006.01) C08G 77/42 (2006.01) G02B 1/04 (2006.01) G02C 7/04 (2006.01)
Patent
CA 2101791
Contact lenses comprising lipophilised cyclodextrins Abstract The present invention relates to a contact lens comprising a crosslinked lipophilised cyclo- dextrin derivative which has repeating sub-units of formula V Image (V) in which n is an integer of from 6 to 15, the radicals R1 are each, independently of the others, hydrogen, R2 or R7 wherein, of the (3 times n) radicals R1, at least one radical R1 has the meaning of R7 and the remaining radicals R1 are hydrogen or have the meaning of R2, R2 being unsubstituted or halogen-substituted alkyl or alkyl-substituted aryl and R7 being a di- or poly-valent radical of formula VI Image (Vl) in which x is an integer of from 1 to 10 000, and R4, R5 and R8 are each, independently of the others, hydrogen, alkyl, unsubstituted or halogen-substituted alkylene or alkenylene, phenyl or hydroxy, with the proviso that at least two of the radicals R4, R5 and R8 in a radical of formula VI are unsubstituted or halogen-substituted alkylene or alkenylene. The invention relates also to the use of such crosslinked lipophilic cyclodextrin derivatives in the manufacture of contact lenses.
Herbrechtsmeier Peter
Schafer Horst
Seiferling Bernhard
Wenke Klaus
Wenz Gerhard
Fetherstonhaugh & Co.
Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.v.
Novartis Ag
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