EP 0194180 B1 19890503 - PROCESS FOR THE SOLVENTLESS PRODUCTION OF PYROTECHNICAL PRODUCTS HAVING A THERMOSETTING BINDER
Title (en)
PROCESS FOR THE SOLVENTLESS PRODUCTION OF PYROTECHNICAL PRODUCTS HAVING A THERMOSETTING BINDER
Publication
Application
Priority
FR 8502796 A 19850227
Abstract (en)
[origin: US4657607A] The present invention relates to the field of compound pyrotechnic products. The invention relates to a three-step, solvent-free process for the manufacture of compound pyrotechnic products containing a thermosetting binder obtained by reaction of a polyhydroxylated prepolymer with a diisocyanate, which process is characterized in that: in a first step the said prepolymer is mixed with an energetic charge and with a quantity of diisocyanate representing 50 to 90% of the required stoichiometric quantity, in a second step the remainder required to attain the said stoichiometric quantity is added and, after mixing, the pasty mixture thus obtained is extruded, in a third step the crosslinking of the thermosetting binder is completed hot. The invention makes it possible to obtain industrially, by extrusion, small-diameter pyrotechnic products containing a thermosetting binder without restriction on the "pot life" period. The invention is particularly suitable for the production of compound propellent powders for arms.
IPC 1-7
IPC 8 full level
C06B 23/00 (2006.01); C06B 21/00 (2006.01); C06B 45/00 (2006.01); C06B 45/10 (2006.01)
CPC (source: EP KR US)
C06B 21/0075 (2013.01 - EP US); C06B 45/00 (2013.01 - KR); C06B 45/10 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE GB IT LI SE
DOCDB simple family (publication)
EP 0194180 A1 19860910; EP 0194180 B1 19890503; AU 5414886 A 19860904; AU 577250 B2 19880915; CA 1256702 A 19890704; DE 3663134 D1 19890608; FR 2577919 A1 19860829; FR 2577919 B1 19870220; JP H0432038 B2 19920528; JP S61201687 A 19860906; KR 860006423 A 19860911; KR 900000084 B1 19900119; US 4657607 A 19870414
DOCDB simple family (application)
EP 86400307 A 19860213; AU 5414886 A 19860227; CA 502564 A 19860224; DE 3663134 T 19860213; FR 8502796 A 19850227; JP 3308286 A 19860219; KR 860001346 A 19860226; US 83314286 A 19860226