Organotin-containing composition for the stabilization of...

C - Chemistry – Metallurgy – 07 – F

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400/5014, 31/78,

C07F 7/22 (2006.01) C08K 5/58 (2006.01)

Patent

CA 1224473

= 26 = ABSTRACT An organotin-containing composition for the stabilization of polymers or copolymers of vinyl chloride in which there is incorporated a sta- bilizing amount of an organotin compound containing at least two tin atoms corresponding to the formula Image A and B represent tin-containing organic groups which may be the same or different and both correspond to the formula Image , wherein R1 and R2 may the same or different and may represent an alkyl group having 1 to 18 carbon atoms, the group Image , an Image -- group or the group Image wherein D corresponds to the same formula as A and B, provided that in the case where in the group A R1 and R2 both represent an alkyl group or the group = 27 = Image , R1 in the group B and/or D represents an alkyl group and R2 the group Image or R1 and/or R2 in the group B and/or D represent the group Image wherein R6 represents an alkyl group having 1 tot 18 carbon atoms which may be substituted or not with an alkoxy group having 1 to 18 carbon atoms, a polyoxyalkylene group consisting of oxyalkylene groups having 1 to 4 carbon atoms and of which the end group is an alkyl group or a hydrogen atom, a cycloalkyl group having 3 to 6 carbon atoms, an alkenyl group having 2 to 4 carbon atoms or a phenyl group; R3, R4, R7 and R8 may be the same or different and have the meaning of a hydrogen atom, an alkyl group having 1 to 18 carbon atoms or an aryl group; R5 represents a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms or a substituted or unsubstituted aryl group; R9 represents a hydrogen atom or a methyl group; X has the meaning of an O or S atom; Y represents a divalent substituted or unsubstituted aliphatic, cyclo- aliphatic or aromatic group having not more than 20 carbon atoms; and m and q represent an integer from 1 to 6, n and r an integer from 1 to 3 and p an integer from 1 to 12.

454339

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