| abstract |
A solution in a plasticiser ester of a calcium superbase soaps in the form of calcium carbonate and calcium caboxylates, the carboxylic acids consisting of a mixture or otherwise of saturated organic carboxylic acids containing from 7 to 13 carbon atoms, having the following characteristics: a linear acid content of between 0 and 40 % by weight, a content of acids which are branched on carbon 2 of between 0 and 20 % by weight, and a content of acids which are mono- or polysubstituted on carbon 3 and/or on the carbons of higher rank, which is equal to or greater than 50 % by weight, is useful as a stabiliser for polyvinyl chloride, its manufacture by overbasing in the plasticiser medium is also covered. |