Photochromic molding compositions and articles produced...

Details Photochromic molding compositions and articles produced... Photochromic molding compositions and articles produced...

2011-08-09

2011-08-09

Chevalier, Alicia (Department: 1788)

Stock material or miscellaneous articles

Composite

Of polyamide

C428S411100, C428S394000, C428S395000, C428S357000, C428S457000, C528S310000, C528S338000, C528S340000, C524S538000, C525S410000, C525S432000

Reexamination Certificate

active

07993755

ABSTRACT:
A polyamide molding composition is described, comprising at least one transparent polyesteramide in a proportion by weight of from 70 to 99.99% by weight; at least one further polymer in a proportion by weight of from 0 to 30% by weight; at least one photochromic dye in a proportion by weight of from 0.01 to 2% by weight; and also optionally further dyes and/or additives. The invention further encompasses articles manufactured therefrom, e.g. foils, for the coating of photochromic ophthalmic lenses, or the like.

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