Composition generating an IR-opaque smoke

Details Composition generating an IR-opaque smoke Composition generating an IR-opaque smoke

1993-08-20

1995-02-14

Tucker, Philip

Compositions

Light transmission modifying compositions

Infrared

102334, 149 87, F21V 904, C06D 300, C06B 2700

Patent

active

053893085

ABSTRACT:
A composition generating an IR-opaque smoke in the form of a compact which has a density in the range from 0.9 to 1.5 g/cm.sup.3 is described, comprising from 10 to 25 percent by weight of magnesium powder, from 5 to 35 percent by weight of a fluorinated organic poller, from 5 to 15 percent by weight of chloroparaffin and from 35 to 65 percent by weight of an aromatic compound of the formula I ##STR1## wherein A and B are independently selected from ##STR2## R.sup.1 and R.sup.2 are independently selected from OH, X or alkyl having one to four carbon atoms,
m and n is an integer from 0 to 2, and
X is halogen,
or an aromatic compound of formula II ##STR3## wherein R.sup.1 and R.sup.2 X m and n are defined as above and D and E are independently selected from ##STR4## or phtalic anhydride, 2-benzoyl pyridine, fluorene, dibenzosuberenone or diphenylenesulphide or the derivatives thereof substituted by R.sup.1.sub.m and/or R.sup.2 .sub.m.

REFERENCES:
patent: 3576754 (1971-04-01), Lehikoinen
patent: 3690971 (1972-09-01), Gunderloy et al.
patent: 3695949 (1972-10-01), Freeman et al.
patent: 4697521 (1987-10-01), Espagnacq et al.
patent: 4698108 (1987-10-01), Vega et al.
patent: 4704966 (1987-11-01), Sellman et al.
patent: 4724018 (1988-02-01), Espagnacq et al.
patent: 4728375 (1988-03-01), Simpson

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