| abstract |
Flexible and semi-rigid vinyl chloride resin compositionsncomprising a combination of a latent mercaptan and a zinc saltnof oxidized polyethylene (a zinc ionomer) as a heat stabilizernare substantially free from the offensive odor typicallynassociated with mercaptans and are protected during processingnby the degradation products of the latent mercaptan and the zincnionomer. The oxidized polyethylene is split out from the ionomernto act as an adhesion promoter for aqueous inks and paints, andnthe residual zinc carboxylate functions as a co-stabilizer withnthe latent mercaptan in the composition. The latent mercaptannis exemplified by a 2-S-(tetrahydropyranyl)thioalkanol, ancarboxylic acid ester thereof, a 2-S-(tetrahydropyranyl)thiocarboxylicnacid, an ester thereof, and the furanyl homologsnof each. |