CURABLE ORGANOPOLYSILOXANE COMPOSITIONS

摘要

CURABLE ORGANOPOLYSILOXANE COMPOSITIONS Compositions curable by radiation e.g. UV radiation are disclosed and claimed which comprise an organosiloxane having at least two siloxane units including groups -RSH, an organosiloxane having at least two siloxane units including ethylcyclohexenyl groups, and a photoinitiator. The compositions cure on exposure to UV radiation and may be used to produce on a variety of substrates coatings which are of reduced odour. Also disclosed and claimed is a method of treating a substrate which comprises applying a coating of such compositions and irradiating the coating. Examples given refer to production of coatings on paper substrates to provide cured coatings.