摘要:
Processes for applying a coated or uncoated film onto at least one geometrically defined surface of a lens substrate which comprises: providing a liquid hot melt adhesive (HMA) composition; providing a film having two opposite main surfaces; providing a lens substrate having at least one geometrically defined surface; and applying the film to the lens substrate surface using the HMA.
摘要:
A process for applying a coated or uncoated film onto at least one geometrically defined surface of a lens substrate which comprises the steps of: (a) providing a liquid hot melt adhesive (HMA) composition comprising: 1. at least one HMA base polymer having a glass transition temperature Tg and optionally a melting temperature Tm, with Tg
摘要:
The present invention relates to processes for transferring a coating borne by a carrier onto at least one surface of the substrate of an optical article. Specifically, the invention relates to processes for transferring any kind of patterned layer having a refractive index profile from a carrier to the surface of an optical article. The invention allows for manufacture of optical articles presenting high transmittance, low haze, and excellent adhesion performances, and in particular vision corrective optical articles that are customized and optimized to the patient's individual requirements. The invention also contemplates optical articles made by such methods.
摘要:
The present invention relates to processes for transferring a coating borne by a carrier onto at least one surface of the substrate of an optical article. Specifically, the invention relates to processes for transferring any kind of patterned layer having a refractive index profile from a carrier to the surface of an optical article. The invention allows for manufacture of optical articles presenting high transmittance, low haze, and excellent adhesion performances, and in particular vision corrective optical articles that are customized and optimized to the patient's individual requirements. The invention also contemplates optical articles made by such methods.
摘要:
The present invention relates to a process for transferring at least one coating onto at least one geometrically defined surface of a lens substrate to produced a lens substrate coated with at least one functional coating adhering to at least one geometrically defined surface through a layer of transparent adhesive composition.
摘要:
A transparent, non elastomeric, high refractive index, impact resistant poly(thio)urethane/urea material comprising the reaction product of: a) at least one (α, ω)-diiso(thio)cyanate cycloaliphatic or aromatic polysulfide prepolymer, and b) at least one aromatic primary diamine, in an equivalent molar ratio amine function/iso(thio)cyanate function ranging from 0.5 to 2, wherein, said prepolymer and diamine are free from disulfide (—S—S—) linkage and wherein the (α, ω)-diiso(thio)cyanate polysulfide prepolymer is the reaction product of at least one cycloaliphatic or aromatic diiso(thio)cyanate and at least one (α, ω)-diol prepolymer.
摘要:
The present invention relates to a process for transferring at least one coating onto at least one geometrically defined surface of a lens substrate.
摘要:
A transparent, non elastomeric, high refractive index, impact resistant poly(thio)urethane/urea material comprising the reaction product of: a) at least one (α, ω)-diiso(thio)cyanate cycloaliphatic or aromatic polysulfide prepolymer, and b) at least one aromatic primary diamine, in an equivalent molar ratio amine function/iso(thio)cyanate function ranging from 0.5 to 2, wherein, said prepolymer and diamine are free from disulfide (—S—S—) linkage and wherein the (α, ω)-diiso(thio)cyanate polysulfide prepolymer is the reaction product of at least one cycloaliphatic or aromatic diiso(thio)cyanate and at least one (α, ω)-diol prepolymer.
摘要:
The invention concerns a process for making a coated optical lens blank free of visible fining lines which comprises: (ix) providing an optical article having at least one fined but unpolished geometrically defined main face; (x) providing a mold part having an internal and external surface; (xi) depositing on said main face of said optical article or on the internal surface of the mold part a requisit amount of a liquid curable coating composition; (xii) moving relatively to each other the optical article and the mold part to either bring the coating composition into contact with the main face of the optical article or into contact with the internal face of the mold part; (xiii) applying pressure to the mold part to spread the liquid curable coating composition on said main face and form a uniform liquid coating composition layer onto the main face; (xiv) curing the liquid coating composition layer; (xv) withdrawing the mold part; and recovering the free of visible fining lines coated optical article.
摘要:
The present invention relates to a process for transferring at least one coating onto at least one geometrically defined surface of a lens substrate to produced a lens substrate coated with at least one functional coating adhering to at least one geometrically defined surface through a layer of transparent adhesive composition.