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公开(公告)号:AT226236T
公开(公告)日:2002-11-15
申请号:AT99959281
申请日:1999-11-16
Applicant: ESSILOR INT
Inventor: WHITE SIDNEY SHAW JR , DANG HOA THIEN , TATMAN SHEILA
IPC: B32B27/00 , C08G77/58 , C09D4/00 , C09D5/00 , C09D183/04 , C09D183/14 , C09D185/00 , G02B1/10
Abstract: The coating composition according to the invention comprises:(A) a component which is the reaction product with oxalic acid of at least one organometallic compound of formula:wherein, M is a metal R is H or an alkyl radical, R is a chelating ligand, x is the valency of the metal, y is an integer at least equal to 1 and x-y is at least equal to 1; and(B) at least one organoalkoxysilane of formula:wherein, R is an alkyl radical, R is an epoxidized alkyl group and n is an integer from 1 to 3 or a mixture of the organoalkoxysilane of formula (II) with an alkoxysilane of formula (II')wherein n' is an integer from 0 to 3,R'' is H, an alkyl radical or an alkoxyalkyl radical, andR' is a vinyl, (meth)acryl, aromatic, cyclic or aliphatic alkyl radical.
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公开(公告)号:CA2373106A1
公开(公告)日:2001-09-13
申请号:CA2373106
申请日:2001-03-02
Applicant: ESSILOR INT
Inventor: JOHNSON ERIC GLEN , OLIVER KIMBERLY DENISE , TARDIEU PASCALE , VALERI ROBERT ALAN , DANG HOA THIEN , ROBERT ANNE , WHITE SIDNEY SHAW JR
Abstract: L'invention concerne un procédé de finissage d'une surface d'une lentille ophtalmique, à une prescription donnée. Selon l'invention, on applique sur l a surface une couche de vernis d'épaisseur comprise entre environ 30 Ra et 800 Ra, où Ra est la rugosité moyenne arithmétique de ladite surface, pour lui conférer un état de surface poli. L'invention concerne également une installation de mise en oeuvre dudit procédé. Application aux lentilles ne matière minérale ou en matière organique.
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