COMPOSITIONS AND METHODS FOR MANUFACTURING OPHTHALMOLOGICAL LENSES Russian patent published in 2005 - IPC

FIELD: polymer materials.

SUBSTANCE: invention provides composition containing from about 50 to about 80% of component selected from group consisting of di(meth)acylate of ethoxylated bisphenol A, di(meth)acylate of non-ethoxylated bisphenol A, di(meth)acylate of propoxylated bisphenol A, epoxy(meth)acrylates of bisphenol A, and mixtures thereof; from more than 0 to about 30% of component selected from group consisting of tetrahydeofuryl (meth)acrylate, isobornyl (meth)acrylate, cyclohexyl (meth)acrylate, and mixtures thereof; from more than 0 to about 15% of component selected from group consisting of dipentaerythritol penta(meth)acrylate, trimethylolpropane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, tri(meth)acrylate of ethoxylated or propoxylated trimethylolpropane, tri(meth)acrylate of ethoxylated or propoxylated glycerol, pentaerythritol tetra(meth)acrylate, bis-trimethylolpropane tetra(meth)acrylate, dipentaerythritol hexa(meth)acrylate, and combinations thereof. Such composition is suited to manufacture eyeglass lenses.

EFFECT: expanded possibilities in manufacture of polymer-based lenses, including multifocal ones.

21 cl, 3 tbl, 18 ex