| 摘要 |
Compositions are described, comprising A) rigid or semi-rigid PVC having a plasticiser content of up to 20%, and B) at least one compound of formula 1, <IMAGE> wherein X is O or S, and R is H or phenyl, with the proviso that compounds from the groups of the perchlorate compounds, glycidyl compounds, beta-diketones, beta-keto esters, dihydropyridines, polydihydro-pyridines, polyols, disaccharide alcohols, sterically hindered amines (tetraalkylpiperidine compounds), alkali alumosilicates (zeolites), hydrotalcites, alkali alumocarbonates (dawsonites) are not present. |
