The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 08, 1976
Filed:
Dec. 17, 1974
John Desmond Collins, Albrighton, Shropshire, EN;
Harold Coates, Wombourn, Staffordshire, EN;
Iftikhar Hussain Siddiqui, Edgbaston, Birmingham, 13, Warwickshire, EN;
Other;
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.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.