Patent ID: 9546244
Date: 2017-01-17
CPC Classifications: B05D,B29C,B29K,C08G,C08J,C08K,C08L

Claim:
1. A process for preparing an article having improved flame retardance, comprising: (a) providing a composition comprising (i) a non-cross-linked polycarbonate comprising about 0.5 mol % to about 5 mol % endcap groups that are derived from a monohydroxybenzophenone and all other endcaps being derived from phenol, p-cumylphenol, or p-tertiary-butylphenol, and (ii) a flame retardant; (b) molding the composition of step (a) into an article, or coating an article with the composition of step (a); and (c) exposing the molded article or coated article of step (b) to UV-radiation by passing the article through a UV-chamber to affect cross-linking of the non-cross-linked polycarbonate; wherein a plaque formed from the composition achieves a UL 94 5VA rating at a thickness of 3.0 mm±10% or less after UV exposure.