Tracer composition and method of producing same

Details Tracer composition and method of producing same Tracer composition and method of producing same

C - Chemistry, Metallurgy

06

B

52/14, 52/51

C06B 45/32 (2006.01) C06B 33/04 (2006.01) C06C 15/00 (2006.01)

Patent

CA 1320832

ABSTRACT OF THE DISCLOSURE A tracer composition with a relatively high luminous output and a moderate burn rate includes from 35 to 47% by weight magnesium; from 40 to 53% by weight strontium nitrate, from 2 to 10% by weight magnesium carbonate, from 0 to 6% by weight colour intensifier; from 0 to 6% by weight retardant and from 3 to 8% by weight of a synthetic polymer binder selected from the group consisting of (i) a terpolymer of vinylidene fluoride, hexafluoropropylene and polytetrafluoroethylene and (ii) a copolymer of vinylidene fluoride and hexafluoropropylene. The composition is produced by dry mixing all of the ingredients except the magnesium and binder, dissolving the binder in a solvent such as acetone, forming a homogeneous mixture of particulate magnesium and binder solution, adding a non-solvent such as hexane to the mixture to initiate precipitation of the binder, mixing the dry mixture with the magnesium/binder combination, and adding additional non-solvent to complete precipitation of the binder, and drying the mixture thus produced.

615092

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