Monomeric and oligomeric bisphosphites as stabilisers for polyvinyl chloride
AssigneeWitco Vinyl Additives GmbH
InventorsHorst Zinke, Karl Josef Kuhn, Wolfgang Wehner
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Abstract
Compositions, comprising (i) a halogen-containing polymeric material, and (ii) at least one phosphite of formula I ##STR1## wherein n is a number from 1 to 6, R is a divalent linking group of formulae as defined herein as well as of novel compounds of formula I and their use as stabilisers.
Claims43
A composition, comprising
- (i) a halogen-containing polymeric material, and
- (ii) at least one phosphite of formula I ##STR97## wherein n is a number from 1 to 6,
- R is a divalent linking group of formulae ##STR98## m is a number from 1 to 5, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another C.sub.4 -C.sub.22 alkyl, C.sub.7 -C.sub.9 phenylalkyl, C.sub.5 -C.sub.8 cycloalkyl or C.sub.1 -C.sub.4 alkyl-C.sub.5 -C.sub.8 cycloalkyl, or
- R.sub.1 and R.sub.2 and/or R.sub.3 and R.sub.4 together are C.sub.2 -C.sub.9 alkylene or a group of formula ##STR99## with the provisos that a) the composition does not contain any Ba-, Zn- and/or Ca-stabilisers, if R.sub.1 +R.sub.2 and R.sub.3 +R.sub.4 are a group of formula ##STR100## and if R is BR1 or BR2, and b) m is different from 2, if R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are identical and are C.sub.12 -C.sub.22 alkyl and if R is BR2;
- and at least one component (iii) which is an organotin compound selected from organotin sulfides, organotin mercaptides or organotin mercaptocarboxylates.
A phosphite of formula I ##STR101## wherein n is a number from 1 to 6,
- R is a divalent linking group of formulae ##STR102## R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another C.sub.4 -C.sub.22 alkyl, C.sub.7 -C.sub.9 phenylalkyl, C.sub.5 -C.sub.8 cycloalkyl or C.sub.1 -C.sub.4 alkyl, -C.sub.5 -C.sub.5 cycloalkyl, or
- R.sub.1 and R.sub.2 and/or R.sub.3 and R.sub.4 together are C.sub.2 -C.sub.9 alkylene or a group of formula ##STR103##
A phosphite of formula I wherein
- n is number from 2 to 6,
- R is a divalent linking group of formulae ##STR104## m is a number from 1 to 5, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another C.sub.4 -C.sub.22 alkyl, C.sub.7 -C.sub.9 phenylalkyl, C.sub.5 -C.sub.8 cycloalkyl or C.sub.1 -C.sub.4 alkyl -C.sub.5 -C.sub.5 cycloalkyl, or
- R.sub.1 and R.sub.2 and/or R.sub.3 and R.sub.4 together are C.sub.2 -C.sub.9 alkylene or a group of formula ##STR105##
A composition comprising a lubricant, a hydraulic fluid or metal processing fluid and at least one phosphite of formula I wherein
- n is a number from 1 to 6,
- R is a divalent linking group of formulae ##STR106## m is a number from 1 to 5, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another C.sub.4 -C.sub.22 alkyl, C.sub.7 -C.sub.9 phenylalkyl, C.sub.5 -C.sub.8 cycloalkyl or C.sub.1 -C.sub.4 alkyl -C.sub.5 -C.sub.5 cycloalkyl, or
- R.sub.1 and R.sub.2 and/or R.sub.3 and R.sub.4 together are C.sub.2 -C.sub.9 alkylene or a group of formula ##STR107## with the proviso the a) the composition does not contain any Ba-, Zn- and/or Ca-stabilizers, if R.sub.1 +R.sub.2 and R.sub.3 +R.sub.4 are a group of formula ##STR108## and if R is BR1 or BR2, and b) m is different from 2, if R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are identical and are C.sub.12 -C.sub.22 alkyl and if R is BR2.
A process for enhancing the performance properties of lubricants, hydraulic fluids or metal processing fluids, which comprises adding thereto at least one phosphite of formula I ##STR109## wherein n is a number from 1 to 6,
- R is a divalent linking group of formulae ##STR110## m is a number from 1 to 5, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another C.sub.4 -C.sub.22 alkyl, C.sub.7 -C.sub.9 phenylalkyl, C.sub.5 -C.sub.8 cycloalkyl or C.sub.1 -C.sub.4 alkyl -C.sub.5 -C.sub.5 cycloalkyl, or
- R.sub.1 and R.sub.2 and/or R.sub.3 and R.sub.4 together are C.sub.2 -C.sub.9 alkylene or a group of formula ##STR111## with the provisos that a) the composition does not contain any Ba-, Zn- and/or Ca-stabilisers, if R.sub.1 +R.sub.2 and R.sub.3 +R.sub.4 are a group of formula ##STR112## and if R is BR1 or BR2, and b) m is different from 2, if R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are identical and are C.sub.12 -C.sub.22 alkyl and if R is BR2.
Dependencies are inferred from the claim text.