Polycarbonate cross-linker resin and fire resistant compositions

Details Polycarbonate cross-linker resin and fire resistant compositions Polycarbonate cross-linker resin and fire resistant compositions

1988-12-07

1990-05-22

Kight III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

525463, C08G 6362

Patent

active

049279149

ABSTRACT:
Polycarbonate resins containing at least one divalent chain unit of the formula: ##STR1## 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.

REFERENCES:
patent: 3285875 (1966-11-01), Farbenfabriken
patent: 4737570 (1988-04-01), Chen
Bull. Soc. Chim. France., (3), 854-7, "Polyamide-Polycarbonate Sequenced Copolycondensates and New Polycarbonates", Gouley, Michel et al.
Volume of applied Polymer Science, vol. 10, pp. 245-252 (1966).

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