Abstract: Methods of forming a glass article are disclosed. In one embodiment, a method of forming a glass article includes translating a pulsed laser beam on a glass substrate sheet to form a laser damage region between a first surface and a second surface of the glass substrate sheet. The method further includes applying an etchant solution to the glass substrate sheet to remove a portion of the glass substrate sheet about the laser damage region. The method may further include strengthening the glass substrate sheet by an ion-exchange strengthening process, and coating the glass substrate sheet with an acid-resistant coating. Also disclosed are methods where the laser damage region has an initial geometry that changes to a desired geometry following the reforming of the glass substrate sheet such that the initial geometry of the laser damage region compensates for the bending of the glass substrate sheet.

Abstract: Disclosed are novel light polarizing articles comprising a substrate, a light polarizing layer, an inorganic intermediate layer between the polarizing layer and the substrate, an optional inorganic sub-layer between the substrate and the inorganic intermediate layer, and a protective layer over the light polarizing layer, and method of making the same. Due to the presence of the inorganic intermediate layer and the optional sub-layer, adhesion of the polarizing layer is improved substantially. The light polarizing article has improved chemical, mechanical and thermal resistance. The light polarizing article can be used, for example, as ophthalmic products and in display devices.

Abstract: Disclosed is a method of preparing a stable composition of radically copolymerizable monomers, said composition containing firstly at least one monomer which has at least one urea function in its formula and secondly at least one monomer which does not have an isocyanate function in its formula, said method comprising preparing said monomer(s) having urea function(s) by reaction of two types of reagent: at least one radically copolymerizable monomer which has at least one isocyanate function in its formula with at least one amine selected from primary and secondary amines, and incorporating said monomer(s) which does(do) not have an isocyanate function in its(their) formula, prior to said reaction, together with one of said reagents, before adding the other of said reagents, and/or during the addition of said reagents, and/or after said reaction.

Abstract: Disclosed is a method of preparing a stable composition of radically copolymerizable monomers, said composition containing firstly at least one monomer which has at least one urea function in its formula and secondly at least one monomer which does not have an isocyanate function in its formula, said method comprising preparing said monomer(s) having urea function(s) by reaction of two types of reagent: at least one radically copolymerizable monomer which has at least one isocyanate function in its formula with at least one amine selected from primary and secondary amines, and incorporating said monomer(s) which does(do) not have an isocyanate function in its(their) formula, prior to said reaction, together with one of said reagents, before adding the other of said reagents, and/or during the addition of said reagents, and/or after said reaction.

Abstract: The objects of the present invention are: a self-light-stabilized photochromic thermoplastic or thermoreticulated polymer carrying non-cyclic tertiary amide-functionalized pendant groups; its preparation method; photochromic articles constituted, wholly or in part of such a polymer. Said polymer is obtained advantageously by radical co-polymerization of a composition containing an effective amount of at least one monomer of the formula: in which: R1 is hydrogen or a methyl group; n is 2 or 3; R2 and R3 are identical or different and represent independently a methyl or ethyl group; and are advantageously identical; said monomer providing said photostabilizing non-cyclic tertiary amine-functionalized pendant groups.

Abstract: The object of the present invention is a photochromic composition incorporating: +2-(p-dimethylaminophenyl)2-(p-methoxyphenyl)-5-methyl-7,9-dimethoxy-[2H]-naphtho[1,2-b]pyran (compound (I)), and +3-(p-methoxyphenyl)-3-phenyl-6-morpholino-3H-naphtho-[2,1-b]pyran (compound (II)). The invention also relates to said compounds (I) and (II) per se, (co)polymer matrices containing same, advantageously in a mixture, as well as finished products constituted wholly or in part of such matrices and/or containing one and/or the other of said compounds (I) and (II).

Abstract: The invention relates to transparent, photochromic or nonphotochromic organic materials, which have a refractive index higher than 1.55 and which are free of optical distortions, consisting of a copolymer of: (a) 50-90 wt. % of at least one monomer represented by the formula, in which R═H or CH3, and m and n are independently 1 or 2; (b) 10-30 wt. % of at least one aromatic monovinyl monomer represented by formula, R1═H or CH3; and (c) 1-20 wt. % of at least one (meth)acrylic monomer represented by formula, CH2=C(R)—COOR′ in which R═H or CH3 R′ is a straight-chain or branched C4 to C16 alkyl radical, an alkylaryl radical, or a polyoxyethoxylated group with formula —(CH2—CH2O)nR″ in which n=1 to 10 and R″═CH3 or C2H5. Optionally, the photochromic material may contain up to 10 wt. % of at least one photochromic coloring agent to impart desired photochromic properties.