Process for the production of foamed plastics with improved...

Details Process for the production of foamed plastics with improved... Process for the production of foamed plastics with improved...

C - Chemistry, Metallurgy

08

G

403/31

C08G 18/54 (2006.01) C08G 18/16 (2006.01)

Patent

CA 1088700

PROCESS FOR THE PRODUCTION OF FOAMED PLASTICS WITH IMPROVED COMBUSTION CHARACTERISTICS Abstract of Disclosure Foamed plastics with improved combustion characte- ristics are produced by condensing an aqueous solution of formaldehyde-urea and/or melamine precondensates with polyisocyanates and optionally a polyol in the presence of an acid catalyst, being present in an amount of 1 part by weight per at least 20 parts by weight of precondensate, whereby this catalyst is added to the isocyanate before mixing with the precondensate or to the mixture of iso- cyanate and precondensate, but separately from the pre- condensate.

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