Aqueous-based sealant compositions.

摘要

Aqueous-based sealant composition comprising at least one vinylidene chloride copolymer which has modal molecular weight Mp of at least 200,000, wherein the composition has Tg below 0 DEG C. The vinylidene chloride copolymer preferably includes polymerised units of an internally plasticising comonomer and an unsaturated carboxylic acid. The composition preferably includes an external plasticiser and a filler material (particularly untreated calcium carbonate).