Single-component, storage-stable diorganopolysiloxane CVE compositions

Claim 1

A single-component, storage-stable organopolysiloxane cold vulcanizable elastomeric composition of matter, comprising: (i) 100 parts of at least one diorganopolysiloxane polymer of the formula: R.sup.2.sub.3-a R.sup.1.sub.a Si(OSiR.sub.2).sub.r SiR.sup.1.sub.a R.sup.2.sub.3-a (II) in which each R, which may be identical or different, is a hydrocarbon radical containing from 1 to 10 carbon atoms, or a substituted such hydrocarbon radical bearing at least one halogen atom or cyano group substituent, each R 1 , which may be identical or different, is a C 1 -C 10 hydrocarbon radical, each R 2 , which may be identical or different, is an alkoxy or polyalkoxy radical of the formulae ZO or ZOEO, in which Z is a C 1 -C 4 alkyl radical, E is a straight or branched chain C 2 -C 4 alkylene radical, a is zero or 1 and the symbol r is a number such that the polymer of the formula (II) has a viscosity of from 500 to 1,000,000 mPa.s at 25° C.; (ii) 0 to 15 parts of at least one polyalkoxysilane of the formula: R.sup.1.sub.a SiR.sup.2.sub.3-a (III) in which R 1 , R 2 and a are as defined above; (iii) 0 to 250 parts of inorganic filler material; (iv) 0.001 to 3 parts of a condensation catalyst; (v) 0.001 to 15 parts of at least one amino compound bearing at least one primary or secondary amine group comprising an organic amine having a pKb of less than 5 in aqueous media, or an aminoorganosilane or aminoorganopolysiloxane, said aminoorganosilane or aminoorganopolysiloxane bearing, per molecule: (a) at least one C 3 -C 15 organic radical bonded to the silicon atom by an SiC bond and bearing at least one amino group, and (b) at least one C 1 -C 5 alkoxy radical or a C 3 -C 6 alkoxyalkyleneoxy radical; and (vi) an effective stabilizing amount of at least one isocyanurate of the formula: ##STR15## in which W is a radical (CH 2 ) n --N═C═O and n is an integer of from 1 to 12.