Abstract: The invention relates to a process for continuous manufacture of pyrotechnic charges containing a silicone binder and to the compositions capable of being used by this process.The following are introduced continuously into an extruder (1):a mixture A of a crosslinkable silicone resin with a crosslinkable silicone gum,a mixture B of oxidizing fillers,a crosslinking agent C which is common to the resin and to the gum.The dough obtained is extruded in the form of fuse strings (3) which are cut into strands (5) which are returned into a second extruder (7) to be extruded and cut into the form of blocks (11) in which the binder is crosslinked in an oven (13).The charges thus obtained find their preferred application in gas pyrotechnic generators for motor vehicle safety.

Abstract: A combustion inhibitor for a double base propellant is described which comprises a polyurethane elastomer having in chemically combined form a compound which is an aliphatic polyester polyol or an aliphatic polyether polyol, or a mixture thereof, which compound contains 2-6 hydroxyl groups per molecule, and an aliphatic polyisocyanate. The inhibitor also contains 0.1-10 parts by weight of mineral fibers or thermostable organic fibers of length between 0.1 mm and 15 mm per 100 parts inhibitor. The inhibitor may contain an organic gasifiable charge and an aliphatic plasticizer.