Photodegradable styrene polymer foams containing a hydrocarbon photosensitizer

摘要

Expandable styrene polymer particles which are photodegradable are produced by suspending styrene polymer particles in an aqueous medium and impregnating a blowing agent into the particles in the presence of 0.5 - 5.0 parts of photosensitizer per 100 parts of polymer particles. The photosensitizer is selected from the polynuclear hydrocarbons having at least one benzylic methylene group in one of the rings, such as fluorene, acenaphthene, and 9,10-dihydroanthracene.