MOISTURE, LIGHT AND HEAT STABILITY AT MODERATE TEMPERATURES OF MONOLAYER AND MULTILAYER FLOOR COVERINGS SHAPED FROM POLYVINYL CHLORIDE RESIN COMPOSITIONS

摘要

IMPROVING MOISTURE, LIGHT AND HEAT STABILITY AT MODERATE TEMPERATURES OF MONOLAYER AND MULTILAYER FLOOR COVERINGS SHAPED FROM POLYVINYL CHLORIDE RESIN COMPOSITIONS Monolayer and multilayer floor coverings are provided having an improved moisture, light and heat stability at moderate temperatures and shaped from polyvinyl chloride resin compositions, having at least a wear layer comprising a polyvinyl chloride resin, at least one heat stabilizer in a sufficient amount to impart heat processing stability, and a .beta.-diketone in a sufficient amount to provide, after forming, moisture, light and heat stability at moderate temperatures not provided by any residual heat stabilizer, as well as polyvinyl chloride resin moisture, light and heat stabilizer compositions and polyvinyl chloride resin compositions containing such moisture, light and heat stabilizer compositions suitable for use in forming monolayer and multilayer floor coverings, and particularly a wear layer thereof, comprising at least one heat stabilizer and a .beta.-diketone.