Abstract: Moisture curable extrudable polysulphide sealants comprise the reaction product of (a) a silanized polysulphide obtained by reacting an SH terminated polysulphide with a silane having 2 or 3 hydrolyzable groups and 1 or 2 groups capable of reacting with the SH group in order to cover up to 30% of the SH groups with the silane and (b) a disulphide containing the group ##STR1## group wherein het is an O or S atom or N-organic group. Other moisture curable extrudable sealants comprise the silanized polysulphide (a) and an ortho ester e.g. triethylorthoacetate.

Abstract: Novel organotin compounds exhibit the general formula ##STR1## where R and R.sub.1 are individually selected from the group consisting of C.sub.1 and C.sub.12 alkyl groups, cycloalkyl radicals and phenyl radicals; X is a group of the formula ##STR2## wherein R' is a hydrogen, C.sub.1 to C.sub.20 alkyl, cycloalkyl, or phenyl group;R" is a C.sub.1 to C.sub.20 alkyl, phenyl, hydroxyphenyl, or methoxyphenyl group or the radical CH.sub.2 COOR.sub.5, where R.sub.5 is an alkyl radical of 1 to 8 carbon atoms;R"' is R.sub.6 or is (CH.sub.2).sub.n COOR.sub.6 where R.sub.6 is an alkyl radical of from 1 to 20 carbon atoms, a cycloalkyl or a phenyl radical, m is an integer from 3 to 7 and n is an integer from 1 to 4;R.sub.2 and R.sub.3 are selected from the same group as R;R.sub.4 is selected from the same group as R';Y is selected from the same group of groups as X or exhibits a formula selected from the group consisting of S(CH.sub.2).sub.n COOR.sub.7, OOCCH=CHCOOR.sub.7 and OOCCH=CHCOSCH.sub.2 COOR.sub.

Abstract: Organotin compounds with low tin content suitable as stabilizers for halogen containing resins e.g. polyvinyl chloride are of formula ##EQU1## where R.sub.1 and R.sub.2 are C.sub.1-20 alkyl, cycloalkyl or phenyl groups, Q.sub.1 represents a radical selected from the group consisting of ##EQU2## Q.sub.2 is a hydrogen atom, an alkyl group containing between 1 and 6 carbon atoms or the group --CH.sub.2 Z.sub.3.Z.sub.1, z.sub.2, and Z.sub.3 are individually selected from the group of groups consisting of ##EQU3## and ##EQU4## R.sub.3 is an alkyl group containing between 1 and 20 carbon atoms, a substituted or unsubstituted phenyl group or a substituted or unsubstituted alkylphenyl group.R.sub.4 is an alkyl grup containing between 1 and 20 carbon atoms, a substituted phenylakly or unsubstituted phenylalkyl group wherein the alkyl portion of the radical contains between 1 and 6 carbon atoms.R.sub.

Abstract: Halogenated vinyl resins such as poly(vinyl chloride) (P.V.C.) are stabilized against degradation by the addition of stabilizers comprising specified monoorganotin sulfur-containing compounds, for example the reaction product of a mono-organotin tris mercapto carboxylic acid ester and a di-organotin sulfide in combination with an alkyl, aryl or mixed alkyl-aryl ester of phosphorous acid. Preferably the stabilizers also include a hindered phenol.

Abstract: Organotin compounds of formula ##EQU1## where a is 0 or 1, x, x', y and y' are 1-6, R.sub.1, R.sub.2 R.sub.6 and R.sub.7 are C.sub.1-12 alkyl, cycloalkyl, aromatic or aralkyl hydrocarbyl, R.sub.4 and R.sub.9 are as defined for R.sub.1 or are C.sub.13-21 alkyl, C.sub.2-21 alkenyl or substituted aromatic hydrocarbyl, R.sub.3, R.sub.5, R.sub.8 and R.sub.10 are as defined for R.sub.4 or are hydrogen or a pair of R.sub.3 and R.sub.5 or R.sub.8 together with the carbon atom to which they are joined forms a cycloalkyl ring and X is O or S, are stabilizers for halogen containing resins, especially PVC.

Abstract: Organothiotin compounds with low tin content suitable as stabilizers for halogen containing resins e.g. polyvinyl chloride, are of formula ##EQU1## wherein R.sub.1 and R.sub. 2 are individually selected from the group consisting of alkyl radicals containing between 1 and 20 carbon atoms, cycloalkyl and phenyl radicals, m is an integer between 1 and 8, inclusive, and X and Y and individually selected from the group of radicals exhibiting the formulae ##EQU2## wherein Q.sub.1 represents a hydrogen atom, an alkyl radical containing between 1 and 6 carbon atoms, inclusive, or the radical CH.sub.2 Z.sub.3, wherein Z.sub.1, Z.sub.2 and Z.sub.3 are individually selected from the group of radicals exhibiting the formulae ##EQU3## and ##EQU4## or X and Y together form a divalent radical selected from the group consisting of ##EQU5## and ##EQU6## Q.sub.2 represents a divalent radical of a formula selected from the group consisting of ##EQU7## and wherein R.sub.

Abstract: An ester, which is a costabiliser of mono ordi organotin stabilisers for halogen containing resins, is of formula ##EQU1## wherein x and y are 1-6, R.sub.4 and R.sub.9 are alkyl, alkenyl, cycloalkyl or optionally substituted aromatic aralkyl or aralkenyl hydrocarbyl group, R.sub.3 and R.sub.5 are as R.sub.4 or R.sub.9 or is hydrogen or R.sub.3 and R.sub.5 form a cycloalkyl ring. The organotin stabilisers are carboxylates, mercapto carboxylates, carboxylate ester from diacids, sulphides, mercaptides or thiostannoic acids.

Abstract: Organotin compounds with low tin content suitable as stabilizers for halogen containing resins e.g. polyvinyl chloride are of formula ##EQU1## where R.sub.1 and R.sub.2 are C.sub.1.sub.-20 alkyl, cycloalkyl or phenyl, Q.sub.1 is of formula --C(CH.sub.2 Z).sub.2 Q.sub.2, wherein Q.sub.2 is H, C.sub.1.sub.-6 alkyl or CH.sub.2 Z, and each Z is ##EQU2## or a pair of Z is ##EQU3## R.sub.3 is C.sub.1.sub.-20 alkyl, optionally substituted phenyl, or alkylphenyl or if two R.sub.3 groups are present in the molecule, they may constitute a single bond between the carbon atoms immediately adjacent to said R.sub.3 radicals, C.sub.1.sub.-20 alkylene C.sub.2.sub.-20 alkenylene or optionally substituted phenylene, R.sub.4 is C.sub.1.sub.-20 alkyl, optionally substituted phenyl (C.sub.1.sub.-6) alkyl or two groups R.sub.4 are optionally phenyl substituted C.sub.1.sub.-20 alkylene or C.sub.2.sub.-20 alkenylene or C.sub.5.sub.-6 cycloalkylene R.sub.5 is C.sub.1.sub.

Abstract: Organothiotin compounds with low tin content suitable as stabilizers for halogen containing resins e.g. polyvinyl chloride, are of formula R.sub.1 R.sub.2 Sn(X) -- SC.sub.m H.sub.2m S -- (Y)SnR.sub.1 R.sub.2, where R.sub.1 and R.sub.2 are C.sub.1-20 alkyl, cycloalkyl or phenyl, m is 1-8, X and Y are of formula --OCOCH = CHCOOCH.sub.2 Q.sub.1, --S(CH.sub.2).sub.n COOCH.sub.2 Q.sub.1, or --OOC(CH.sub.2).sub.n S -- CH.sub.3 S(CH.sub.2).sub.n COOR.sub.5 SR.sub.4, OCOCH = CHCOOR.sub.5 or S(CH.sub.2).sub.2 COOR.sub.5, where Q.sub.1 is --C(Q.sub.2)(CH.sub.2 Z).sub.2, where Q.sub.2 is H, C.sub.1-6 alkyl or CH.sub.2 Z, Z is OOCR.sub.3 OOC(CH.sub.2).sub.n SR.sub.4, --OOCR.sub.6 COOR.sub.5 or a pair of Z is --OOC(CH.sub.2).sub.a S CHR.sub.3 S(CH.sub.2).sub.n COO--, R.sub.3 is C.sub.1-20 alkyl optionally substituted phenyl or alkylphenyl or if two R.sub.3 groups are present in the molecule, they may constitute a single bond between the carbon atoms immediately adjacent to said R.sub.3 radicals, C.sub.1-20 alkylene, C.