A heat stabilizer composition comprising a) at least one mono-octyltin compound (n-Oc)Sn(T).sub.3 having a purity greater than 85 wt %; and b) at least one di-methyltin compound (Me).sub.2Sn(T).sub.2 having a purity greater than 85 wt %.

A heat stabilizer composition comprising a) at least one mono-octyltin compound (n-Oc)Sn(T).sub.3 having a purity greater than 85 wt %; and b) at least one di-methyltin compound (Me).sub.2Sn(T).sub.2 having a purity greater than 85 wt %.

A heat stabilizer composition comprising a) at least one mono-octyltin compound (n-Oc)Sn(T).sub.3 having a purity greater than 85 wt %; and b) at least one di-methyltin compound (Me).sub.2Sn(T).sub.2 having a purity greater than 85 wt %.

A moisture-curable polymeric composition comprising a polyolefin having hydrolyzable silane groups, a halogenated polymer, and a metal mercaptide. Such moisture-curable polymeric compositions, and crosslinked compositions prepared therefrom, can be used in the production of various articles of manufacture, such as coated conductors.

A moisture-curable polymeric composition comprising a polyolefin having hydrolyzable silane groups, a halogenated polymer, and a metal mercaptide. Such moisture-curable polymeric compositions, and crosslinked compositions prepared therefrom, can be used in the production of various articles of manufacture, such as coated conductors.

A stabilizer composition having low volatility and high efficiency comprising: (i.) 25.000% to 99.997% by weight of at least one dimethyltin compound of formula (CH.sub.3).sub.2Sn(S(CH.sub.2).sub.mCOOR.sub.1).sub.2 wherein R.sub.1 is a linear, branched or cyclic C.sub.10-C.sub.20 alkyl group and m is 1 or 2, optionally containing unsaturations in the form of double or triple bonds; (ii.) 0.001% to 50.000% by weight of at least one mono-methyltin compound of formula CH.sub.3Sn(S(CH.sub.2).sub.nCOOR.sub.2).sub.3 wherein R.sub.2 is a linear, branched or cyclic C.sub.10-C.sub.20 alkyl group and n is 1 or 2, optionally containing unsaturations in the form of double or triple bonds; (iii.) 0.001% to 10.000% by weight of at least one tri-methyltin compound of formula (CH.sub.3).sub.3Sn(S(CH.sub.2).sub.pCOOR.sub.3) wherein R.sub.3 is a linear, branched or cyclic C.sub.10-C.sub.20 alkyl group and p is 1 or 2, optionally containing unsaturations in the form of double or triple bonds; and (iv.) 0.001% to 15.000% by weight of at least one thioester of formula HS(CH.sub.2).sub.qCOOR.sub.4 wherein R.sub.4 is a linear, branched or cyclic C.sub.10-C.sub.20 alkyl group and q is 1 or 2, optionally containing unsaturations in the form of double or triple bonds.

A stabilizer composition having low volatility and high efficiency comprising: (i.) 25.000% to 99.997% by weight of at least one dimethyltin compound of formula (CH.sub.3).sub.2Sn(S(CH.sub.2).sub.mCOOR.sub.1).sub.2 wherein R.sub.1 is a linear, branched or cyclic C.sub.10-C.sub.20 alkyl group and m is 1 or 2, optionally containing unsaturations in the form of double or triple bonds; (ii.) 0.001% to 50.000% by weight of at least one mono-methyltin compound of formula CH.sub.3Sn(S(CH.sub.2).sub.nCOOR.sub.2).sub.3 wherein R.sub.2 is a linear, branched or cyclic C.sub.10-C.sub.20 alkyl group and n is 1 or 2, optionally containing unsaturations in the form of double or triple bonds; (iii.) 0.001% to 10.000% by weight of at least one tri-methyltin compound of formula (CH.sub.3).sub.3Sn(S(CH.sub.2).sub.pCOOR.sub.3) wherein R.sub.3 is a linear, branched or cyclic C.sub.10-C.sub.20 alkyl group and p is 1 or 2, optionally containing unsaturations in the form of double or triple bonds; and (iv.) 0.001% to 15.000% by weight of at least one thioester of formula HS(CH.sub.2).sub.qCOOR.sub.4 wherein R.sub.4 is a linear, branched or cyclic C.sub.10-C.sub.20 alkyl group and q is 1 or 2, optionally containing unsaturations in the form of double or triple bonds.

A stabilizer composition having low volatility and high efficiency comprising: (i.) 25.000% to 99.997% by weight of at least one dimethyltin compound of formula (CH.sub.3).sub.2Sn(S(CH.sub.2).sub.mCOOR.sub.1).sub.2 wherein R.sub.1 is a linear, branched or cyclic C.sub.10-C.sub.20 alkyl group and m is 1 or 2, optionally containing unsaturations in the form of double or triple bonds; (ii.) 0.001% to 50.000% by weight of at least one mono-methyltin compound of formula CH.sub.3Sn(S(CH.sub.2).sub.nCOOR.sub.2).sub.3 wherein R.sub.2 is a linear, branched or cyclic C.sub.10-C.sub.20 alkyl group and n is 1 or 2, optionally containing unsaturations in the form of double or triple bonds; (iii.) 0.001% to 10.000% by weight of at least one tri-methyltin compound of formula (CH.sub.3).sub.3Sn(S(CH.sub.2).sub.pCOOR.sub.3) wherein R.sub.3 is a linear, branched or cyclic C.sub.10-C.sub.20 alkyl group and p is 1 or 2, optionally containing unsaturations in the form of double or triple bonds; and (iv.) 0.001% to 15.000% by weight of at least one thioester of formula HS(CH.sub.2).sub.qCOOR.sub.4 wherein R.sub.4 is a linear, branched or cyclic C.sub.10-C.sub.20 alkyl group and q is 1 or 2, optionally containing unsaturations in the form of double or triple bonds.

A heat stabilizer composition comprising a) at least one mono-octyltin compound (n-Oc)Sn(T).sub.3 having a purity greater than 85 wt %; and b) at least one di-methyltin compound (Me).sub.2Sn(T).sub.2 having a purity greater than 85 wt %.

A heat stabilizer composition comprising a) at least one mono-octyltin compound (n-Oc)Sn(T).sub.3 having a purity greater than 85 wt %; and b) at least one di-methyltin compound (Me).sub.2Sn(T).sub.2 having a purity greater than 85 wt %.