Abstract:
The invention pertains to a tintable hard coat composition for forming a film on an optical article, the composition comprising at least one tinting enhancer, and at least two polymerizable monomers, a first monomer being an hydrolysat of an alkoxysilane comprising at least two alkoxy groups and one epoxy group, and a second monomer having at least two functional groups reacting with the first monomer, at least one of the two monomers having three functional groups of the same kind; the tinting enhancer being preferably chosen from the group consisting of 4-(methyl mercapto) phenol, 4,4′ thiodiphenol,4,4′-Sulfonyldiphenol, and 3,3′-(Ethylenedioxy)diphenol or a mix thereof: Formulas (I), (II), (III), (IV).
Abstract:
The present invention relates to a cross-linkable composition comprising an epoxy oligomer comprising at least six hydroxy groups, to a coating obtained by curing the cross-linkable composition and to an optical lens comprising said coating on a surface thereof, in particular on the edge surface thereof. The invention also relates to a method of preparing a coating for an optical lens and to a method of coating a surface of an optical lens, in particular the edge surface of an optical lens.
Abstract:
A method of coating an edge surface of an optical lens is provided. The method includes providing an optical lens comprising a first optical surface and an opposing second optical surface, wherein the first and the second optical surfaces are connected by an edge surface, disposing at least one temporary protective material on at least a portion of a perimeter portion of one or both of the first and the second optical surfaces abutting the edge surface, disposing at least one coating material on the edge surface of the optical lens to obtain at least one edge coating, and removing any excess coating material disposed on the at least one temporary protective material. An optical lens having at least one temporary protective material disposed on only at least a portion of a perimeter portion of one or both of the first and the second optical surfaces abutting the edge surface is also provided.
Abstract:
The present invention relates to a curable antistatic primer composition, comprising: (d) at least one polyalkylene oxide polymer; (e) at least a Lithium salt; (f) at least an amorphizer selected from at least a dendritic polymer. The present invention also relates to an optical article having at least one surface comprising an antistatic primer coating obtained by depositing on a substrate and curing said composition, and its production method.
Abstract:
The invention pertains to a tintable hard coat composition for forming a film on an optical article, the composition comprising at least one tinting enhancer, and at least two polymerizable monomers, a first monomer being an hydrolysat of an alkoxysilane comprising at least two alkoxy groups and one epoxy group, and a second monomer having at least two functional groups reacting with the first monomer, at least one of the two monomers having three functional groups of the same kind; the tinting enhancer being preferably chosen from the group consisting of 4-(methyl mercapto) phenol, 4,4′ thiodiphenol,4,4′-Sulfonyldiphenol, and 3,3′-(Ethylenedioxy)diphenol or a mix thereof: Formulas (I), (II), (III), (IV).
Abstract:
This invention is related to an optical article, such as an ophthalmic lens, comprising a an acrylic substrate (1) coated with a specific hard-coat (2) formed from a composition comprising a hydrolyzed alkoxysilane, a colloidal metal oxide and a poly-glyceryl ether.