Resinous polymeric substances

Details Resinous polymeric substances Resinous polymeric substances

C - Chemistry, Metallurgy

08

G

361/22, 402/33,

C08G 73/00 (2006.01) B03D 1/016 (2006.01) C08G 12/00 (2006.01) C08G 12/06 (2006.01) C08G 85/00 (2006.01)

Patent

CA 1149097

ABSTRACT OF THE DISCLOSURE A resinous polymeric substance for use as an aid in froth flotation characterized by its mean molecular weight, elemental analysis, viscosity and infra-red spectrum, A method of making the substance by reacting a carbonyl compound with an amine or ammonia followed by heating: and a method of froth flotation in which the substance is used as an aid The substance has a mean molecular weight in the range 250 - 10 000: it includes carbon, hydrogen, nitrogen and oxygen; it has a viscosity of 10 000 to 100 000 centipoise at 20°C and 100 to 1 000 centipoise at 70°C; and it has an infra-red spectrum including bands characteristic of the groups -C-N-, >N-H and >C=C<.

323167

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