Albright & Wilson Limited

Other

Iftikhar Hussain Siddiqui

John Desmond Collins

Harold Coates

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;

Organotin compounds

##EQU1## where 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.sub.-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.sub.-21 alkyl, C.sub.2.sub.-20 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 and R.sub.10 together with the carbon atom to which they are joined form a cycloalkyl ring and R.sub.11 is an aliphatic radical of 2-12 carbon atoms having CH and optionally O and/or S in COC, ##EQU2## or --CSC-- groups, or optionally substituted cyclohexylene or phenylene.

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.

Novel diorganotin maleate half esters and process for preparing same

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.

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.3 is an alkyl radical containing between 1 and 20 carbon atoms or a substituted or unsubstituted phenyl or alkylphenyl radical, R.sub.4 is selected from the same group as R.sub.3, R.sub.5 is an alkyl radical containing between 1 and 20 carbon atoms, or a substituted or unsubstituted phenylalkyl radical wherein the alkyl portion of said phenylalkyl radical contains between 1 and 6 carbons atoms, R.sub.6 and R.sub.7 are selected from the same group as R.sub.3, R.sub.8 is selected from the same group as R.sub.5, R.sub.9 is a single bond, an alkylene radical containing between 1 and 20 carbon atoms, an alkylene radical containing between 2 and 20 carbon atoms or a substituted or unsubstituted phenylene radical, R.sub.10 is selected from the same group as R.sub.4, R.sub.11 is selected from the same group as R.sub.3, R.sub.12 is a single bond, an alkylene radical containing between 1 and 20 carbon atoms, an alkenylene radical containing between 2 and 20 carbon atoms or a substituted or unsubstituted phenylene radical, R.sub.13 is an alkylene radical containing between 1 and 20 carbon atoms or said alkylene radical substituted with at least one phenyl radical, an alkenylene radical containing between 2 and 20 carbon atoms, or a cycloalkylene radical containing 5 or 6 carbon atoms, R.sub.14 is an alkylene radical containing between 1 and 20 carbon atoms, and a, b, c, d, n and p are each selected from the integers 1 to 6, inclusive.

Novel diorganotin derivatives of .alpha., .omega.-dimercaptans and

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.

Esters and mixtures thereof with organotin compounds useful as polymer

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.sub.2-20 alkenylene or optionally substituted phenylene, R.sub.4 is C.sub.1-20 alkyl, optionally substituted C.sub.1-6 alkyl or two groups R.sub.4 are optionally substituted C.sub.1-20 alkylene, C.sub.2-20 alkenylene or C.sub.5-6 cycloalkylene, R.sub.5 is C.sub.1-20 alkyl, optionally substituted phenyl or alkylphenyl or if two R.sub.5 groups are present, these may be bonded together to form a C.sub.1-20 alkylene radical, R.sub.6 is a single bond, C.sub.1-20 alkylene or C.sub.2-20 alkenylene, n and a are 1-6.

Novel stabilized polymer compositions

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.-20 alkyl, optionally substituted phenyl or alkylphenyl or if two R.sub.5 groups are present, these may be bonded together to form a C.sub.1.sub.-20 alkylene radical or a substituted phenylene radical, R.sub.6 is a single bond, C.sub.1.sub.-20 alkylene, or C.sub.2.sub.-20 alkeynylene, n alkenylene, 1-6 and Y is ##EQU4## or Y and OCOCH = CHOOCH.sub.2 Q.sub.1 are together (OCOCH = CHCOOCH.sub.2).sub.2 C(CH.sub.2 Z)Q.sub.2.

Growing community of inventors

Birmingham, United Kingdom

Iftikhar Hussain Siddiqui