Patent ID: 6025026
Filing Date: 2000-02-15
Classification: C08J,G02B

Abstract:
A process for producing an adherent polymeric layer on an organic polymeric substrate, which comprises the steps of:a. treating the surface of said polymeric substrate to provide reactive groups at said surface;b applying to the surface of the treated substrate a polymerizable composition consisting essentially of a composition selected from the group consisting of:(i) organic anhydride(s) having at least one polymerizable ethylenic linkage;(ii) isocyanate(s) selected from the group consisting of:(a) isocyanate represented by the following general formula:CH.sub.2 .dbd.C(Y)--C(O)OR'--N.dbd.--C.dbd.Owherein Y is selected from the group consisting of hydrogen and C.sub.1 -C.sub.5 alkyl; and R' is a C.sub.1 -C.sub.20 alkylene or phenylene;(b) m-isopropenyl-.alpha., .alpha.-dimethyl benzyl isocyanate;(c) product of the reaction of acrylic functional monomer(s) containing a vinyl ether group and isocyanic acid;(d) product of the reaction of unsaturated monomer(s) having a functional group selected from the group consisting of amino, hydroxy, thio and a combination of said functional groups and isocyanate(s) having at least two functional isocyanate groups; and(e) mixtures of these isocyanates; and(iii) combination(s) of (i) and (ii); andc. curing the applied polymerizable composition.