C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
117/34, 400/5447
C08G 12/32 (2006.01) C08G 12/40 (2006.01) C08J 7/04 (2006.01) C08K 5/529 (2006.01) C08L 61/32 (2006.01)
Patent
CA 1133180
ABSTRACT OF THE DISCLOSURE A melamine-aldehyde-phosphate condensation product which is useful as a fire-retardant, especially for plastics materials, and which is made by reacting melamine and at least one aldehyde, or a condensate of melamine and at least one aldehyde, with at least one oxyacid of phosphorus or pre- cursor therefor or ester thereof until the condensation product is essentially non-acidic, the proportions of melamine and aldehyde being chosen such that the molar ratio of units derived from melamine:units derived from aldehyde in the condensation product is in the range 1:1.5 to 1:4.5, and the proportions of melamine and oxyacid of phosphorus or precursor therefor or ester thereof being chosen such that the molar ratio of units derived from melamine:phosphorus in the con- densation product is in the range 1:0.4 to 1:1.7.
305061
Groulding Terence
Orton Michael L.
Ballantyne Donald G.
Imperial Chemical Industries Limited
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