Patent ID: 6783865
Filing Date: 2004-08-31
Classification: C08F,C08G,C08J,C08L,C09D,C09J,Y10T

Abstract:
A graft coated substrate, the substrate comprising polyethylene, and a graft coating covalently bonded thereto, wherein said graft coating comprises a non-polyethylene polymer or copolymer and a flame retardant;said graft coated coated substrate prepared by a process comprising; applying a liquid composition to the substrate;wherein the liquid composition comprises a monomer or prepolymer, a metal ion graft initiator, a peroxide catalyst, a polymerization promoter reactive with the monomer or prepolymer, and a flame retardant and polymerizing the monomer or prepolymer to the substrate; and wherein the process further comprises preparing the liquid composition by combining a Part A solution and a Part B solution prior to application to the substrate, wherein the Part A solution comprises: (i) a monomer or prepolymer suitable for grafting to the substrate, in an amount ranging from 0.1 to about 50%, by weight of the liquid composition, selected from the group consisting of water-dispersed epoxy monomers, aliphatic moisture-curable urethanes, aromatic urethane prepolymers, silane prepolymers, vinyl and epoxy functional silanes and combinations thereof; (ii) a metal ion graft initiator in an amount ranging from about 0.01 to about 1.0% by weight, relative to the weight of prepolymer or monomer in the liquid composition, selected from the group consisting of ions of silver, iron, silver, cobalt, copper and cerium; (iii) a peroxide catalyst in an amount ranging from about 0.1 to about 5%, selected from the group consisting of hydrogen peroxide, an organic peroxide, and combinations thereof; (iv) a flame retardant in an amount ranging from about 0.1 wt percent to about 10 wt percent of the solution, selected from the group consisting of chlorinated phosphate esters, melamine derivatives, oligomeric phosphate esters, bromoaryl ether/phosphate product, and phosphonates and; a compatible solvent or solvents; wherein the Part B solution comprises a polymerization promoter.