Polycarbonate cross-linker resin and fire resistant...

C - Chemistry – Metallurgy – 08 – G

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C08G 64/14 (2006.01)

Patent

CA 2033892

08CL06622 POLYCARBONATE CROSS-LINKER RESIN AND FIRE RESISTANT COMPOSITIONS MADE THEREFROM Abstract of the Disclosure Polycarbonate resins containing at least one divalent chain unit of the formula: Image wherein E represents a trivalent hydrocarbon radical, or a trivalent halogen-substituted hydrocarbon radical, are transitory cross-linkers prepared by thermal degradation of the corresponding acid esters (the ester group being removable under conditions of the degradation by a beta-elimination mechanism). Cross- linked polycarbonate resins exhibit enhanced fire- resistance, especially non-dripping. The cross-linkers are useful to cross-link any resin having a group reactive with a carboxyl group. Niles Richard Rosenquist

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