Inhibiting silicone elastomer coating for homogeneous block of propellant, especially rocket propellant, containing hydroxyl-terminated polydiorganosiloxane and (poly)alkyl silicate, also contains aminoorganosiloxane

摘要

Inhibiting coating for homogeneous (rocket) propellant blocks of a silicone elastomer, which contains, in chemically bound form, a polydiorganosiloxane with terminal hydroxyl (OH) groups and an alkyl silicate and/or polyalkyl silicate with 1-6 C alkyl groups, also contains monomeric or polymeric aminoorganosiloxane(s) with an (alkyl)amino-, aminoalkylamino-, alkylpolyaminoalkylamino- or poly(aminoalkyl)-amino-alkyl group. Inhibiting coating for homogeneous (rocket) propellant blocks of a silicone elastomer, which contains, in chemically bound form, a polydiorganosiloxane with terminal hydroxyl (OH) groups and an alkyl silicate and/or polyalkyl silicate with 1-6 C alkyl groups, also contains monomeric or polymeric aminoorganosiloxane(s) of formula (I): R1 = 1-8 C alkyl or 2-8 C alkoxyalkyl; R2 = 1-8 C alkylene; R3 = H, 1-8 C alkyl, aminoalkyl, alkylpolyamino or (aminoalkylene)n-aminoalkyl, with 2-8 C alkyl and alkylene groups; n = 1-10. An Independent claim is also included for the production of homogeneous (rocket) propellant blocks with the specified inhibiting coatings by casting or spraying the different elastomer components around a homogeneous propellant block, placed concentrically in a mold, followed by cure, with addition of aminoorganosiloxane(s) (I) to the mixture.