Use of phenol-mercaptocarboxylic acid esters as stabilizers for synthetic elastomers
AssigneeCiba-Geigy Corporation
InventorsSiegfried Rosenberg, Kurt Schwarzenbach
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Abstract
The phenol-mercaptocarboxylic acid esters used for stabilizing elastomers are those of the formula ##STR1## wherein R is C.sub.1 -C.sub.18 Alkyl.
Claims3
Stabilised composition characterized by incorporating into synthetic elastomers selected from the group consisting of polybutadiene, polyisoprene, polychloroprene, styrene/butadiene/styrene block polymers, styrene/isoprene/styrene block polymers, styrene/(ethylene-propylene)/ styrene block polymers and acrylonitrile/butadiene polymers 0.01 to 10%, based on the total weight of the material to be stabilised, of a phenol-mercapto-carboxylic acid ester of the formula IV ##STR20## wherein R is C.sub.8 -C.sub.13 alkyl.
Dependencies are inferred from the claim text.