Sola International Holdings Limited

Carl Zeiss Vision Australia Holdings Limited

Sola International Holding Ltd

Huan Kiak Toh

Fang Chen

David Robert Diggins

Ian Roger Bateman

Bohdan Grzegorz Cieslinski

Chong M Kok

David Andrew Lewis

Helena Kloubek

Matthew John Cuthbertson

Kathy Wai Yuen Wong

Bohdan Grzegorz Gieslinski

Raymond K Bubner

Mark Christopher Fisher

Michael Pittolo

The present invention provides a method for manufacturing a photochromic article having a photochromic compound containing layer. The method includes the step of coating a casting face of at least one mold section with a photochromic host layer. The photochromic host layer is treated to minimize damage during subsequent steps, and a mold is then assembled so that it includes the mold section having the photochromic host layer. The mold is then filled with a photochromic article monomer composition and the monomer composition is subsequently cured to form a photochromic article substrate adhered to the photochromic host layer. The photochromic compound is introduced into the photochromic host layer.

Photochromic coating process

A process for manufacture of a photochromic polymeric article comprising: providing a fluid polymerisable composition; subjecting the fluid polymerisable composition to a first curing step to provide a solid article of intermediate hardness; contacting the solid article of intermediate hardness with a photochromic substance; and subjecting the solid article of intermediate hardness to a further curing step to increase the hardness and provide a polymeric article imbibed with the photochromic substance.

Photochromic article and method of preparation

An ultraviolet irradiation curable primer composition for coating optical articles, in which the primer composition comprises: a dithiol or polythiol compound, and an allyl or vinyl monomer. The coating composition can further comprise photochromic dyes and additional polymerizable monomers.

Coating composition

A crosslinkable polymeric casting composition comprises an aromatic polyvinyl monomer such as divinyl benzene, a polythiol such as pentaerythritol tetrakis-(3-mercaptopropionate), an epoxide strain-reducing agent such as hexanediol diglycidyl ether, and, optionally, a polymerizable comonomer such as polyethylene glycol dimethacrylate.

Casting composition of aromatic polyvinyl monomer, polythiol and epoxy strain reducer

High index/high abbe number composition

A cross-linkable polymeric casting composition includes an effective amount of an acrylic or methacrylic di- or polythiol monomer of the formula (1) wherein p is an integer of 0 or 1, M or M&prime; are each spacer groups selected from one or more of the following formulae (i), (ii) wherein m is an integer of 0 or 1 and n is an integer of 0 to 3, with the proviso that m and n are not both equal to zero, R,R,, R,and R,, which may be the same or different, are selected from hydrogen, alkyl or substituted alkyl of 1 to 10 carbon atoms, alkoxy or substituted alkoxy of 1 to 10 carbon atoms, or R,or R,is (iii) and optionally a polymerisable comonomer.

Acrylic thio monomers

A cross-linkable polymeric casting composition including an effective amount of

UV curable high index vinyl esters

High index/high Abbe number composition

A cross-linkable polymeric casting composition including a fluorene diacrylate or dimethacrylate monomer; and a comonomer including a polymerisable double bond.

Cross-linkable polymeric composition

A cross-linkable polymeric casting composition including

Casting composition

A cross-linkable polymeric casting composition including at least polyoxyalkylene glycol diacrylate or dimethacrylate and at least one polyfunctional unsaturated cross-linking agent. The casting composition may be utilized in the manufacture of plastic optical articles such as video discs and ophthalmic lenses.

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Fullarton, Australia

Huan Kiak Toh