A two-stage method for preparing an acrylic for ophthalmic devices with high Refractive Index and paradispositivos ophthalmic materials.

摘要

A two-step method to prepare Acrylic material for ophthalmic devices with high index of refractionThe material in the ophthalmic devices comprising (i) at least a Hydrophobic monomer acru00edlicode formula (i) wherein: X is H or CH3; M is 0 to 10; and it is nothing, o, S,Nr where r is H or CH3, CNH (2n + 1) (n = 10), ISO oc3h7 C6H5 -, or ch2c6h5 and ar is an Aromatic Ring which can be replaced with insustituidoo CH3, C2H5, c3h7 N -, ISO - c3h7, OCH3, c6h11, CL, BR,Ch2c6h5 C6H5 or; (ii) a polymerization initiator in the first etapaseleccionado among the group consisting of Low Temperature Thermal initiators and polymerization and photoinitiators(iii) in the second stage deentrecruzamiento Agent selected from the group consisting of dibenzoilo peroxide,Peroxide compounds of dibenzoilo replaced yperoxido of dicumilo and where the first stage of the method consists in polymerizing material for Activating the iniciadorde ophthalmic DevicesIn the first stage polymerization without Activating the cross-linking Agent of the second stageAnd the second stage of the method is to consider the material for ophthalmic devices Activating cross-linking Agent of the second stage and the materials for dispositivosoftu00e1lmicOs Acrylic with high index of refraction arilacru00edlico consisting of a monomer.The monomers used to form paradispositivos ophthalmic materials contain no cross-linking agents have more than one unsaturated Link.In the second stage, they Intersect the materialesmediante Heat exposure.