Abstract: Novel triazine derivatives which are with cyanoacetic acid, derivatives of cyanoacetic acid or malodinitrile substituted s-triazines and which provide stabilizers against ultraviolet radiation for organic polymers such as polyvinyl chloride or copolymers of polyvinyl chloride or polypropylene are obtained by reacting the corresponding chloro-s-triazinyl derivatives with sodium hydride or a metal lower alcoholate in an organic solvent, and isolating the resulting product by acidification.

Abstract: A stabilizer composition for a polymer is described, said composition comprising a chemically combined structure of the formula ##STR1## wherein R is a group having the formula ##STR2## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently a hydrogen atom, or an alkyl or substituted alkyl group having 1 to 18 carbon atoms, with the proviso that at least one of R.sup.1 and R.sup.2 contains adjacent to the group HC- a carbonyl group which forms a part of an acid group, ester group, acid halide group, ketone group or aldehyde group; and X is --S(CH.sub.2).sub.y --COOR.sup.5 or --S(CH.sub.2).sub.y --OCOR.sup.5, wherein y is 1 or 2, or --SR.sup.5, --OCOR.sup.5 or --OCOCH.dbd.CHCOOR.sup.5, R.sup.5 being an alkyl or substituted alkyl group having 1 to 18 carbon atoms.

Abstract: A stabilizer composition for polyvinyl polymers contains(a) an organotin compound having the formula: ##STR1## WHEREIN M + N = 4 AND M IS EITHER 1 OR 2, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each independently a hydrogen atom, or an alkyl or substituted alkyl group having 1 to 18 carbon atoms with the proviso that at least one of R.sup.1 and R.sup.2 contains adjacent to the group HC-- a carbonyl group which forms a part of an acid group, ester group, acid halide group, ketone group or aldehyde group; X is a --S (CH.sub.2).sub.y --COOR.sup.5 or --S (CH.sub.2).sub.y --OCOR.sup.5 wherein y is 1 or 2, or a --SR.sup.5, --OCOR.sup.5 or --OCOCH.dbd.CHCOOR.sup.5, R.sup.5 having 1 to 18 carbon atoms; and(b) an organotin sulfide having the formula (R Sn S.sub.1.5).sub.n or R.sub.2 Sn S, wherein n is 2 to 10 and R is an alkyl group having 1 to 18 carbon atoms or the group: ##STR2## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as above defined under (a).

Abstract: Organotin trihalides are prepared by reacting in a polar solvent a stannous halide, hydrogen halide and an olefin of the formula ##STR1## where R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are an alkyl group, an oxygen-containing hydrocarbon group or a hydrogen atom and at least one of the groups contains a carbonyl group adjacent to the carbon-carbon double bond. The resulting product may be converted into organotin stabilizers for polyvinyl chloride and other polymers.

Abstract: Organotin trihalides are prepared by reacting in a polar solvent a stannous halide, hydrogen halide and an olefin of the formula ##STR1## where R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are an alkyl group, an oxygen-containing hydrocarbon group or a hydrogen atom and at least one of the groups contains a carbonyl group adjacent to the carbon-carbon double bond. The resulting product may be converted into organotin stabilizers for polyvinyl chloride and other polymers.

Abstract: An improved stabilizer for polyvinyl chloride polymers and copolymers against heat has the composition (a) a compound having the general formula: ##STR1## wherein Y is a hydrogen atom or an acyl group, and R is selected from hydrogen, an alkyl group having 1 - 18 carbon atoms or a cycloalkyl group having 1 - 18 carbon atoms or an aralkyl group having 1 - 18 carbon atoms; and (b) an organic phosphite.

Abstract: Improved heat stability of halogen containing polymers is obtained by applying as stabilizer a synergistic mixture ofA. An organotinstabilizer of the formula R.sub.x S.sub.n Z.sub.(4.sub.-x) andB. A second organotinstabilizer having one of the following formulae ##EQU1## where x may be 1, 2 or 3, X represents the residue of a polyol containing from 2 to 6 hydroxylgroups; Y represents oxygen or sulphur; Z represents one of the following anions: --S(CH.sub.2).sub.n COOR* where n=1 or 2, ##EQU2## --SR and >S and in addition when x=2 ##EQU3## and --S(CH.sub.2).sub.n COO--; R represents an alkyl group containing 1-18 carbon atoms, a cycloalkyl group, an aryl group, an aralkyl or alkaryl group andR* represents the groups represented by R or the residue of a polyol containing from 2 to 6 hydroxylgroups.