Abstract: 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.degree. C. The vinylidene chloride copolymer preferably includes polymerized units of an internally plasticizing comonomer and an unsaturated carboxylic acid. The composition preferably includes an external plasticizer and a filler material (particularly untreated calcium carbonate).

Abstract: Aqueous latex compositions for use as contact adhesives comprising a mixture of an amorphous copolymer A and an amorphous copolymer B and preferably a tackifying resin where A comprises units of vinylidene chloride, an internally plasticizing comonomer like 2-ethylhexyl acrylate or n-butyl acrylate, and optionally a copolymerizable acid, and has Tg in the range -50.degree. to <0.degree. C. and B comprises units of vinylidene chloride, an alkyl acrylate and/or methacrylate or certain other comonomers, and optionally a copolymerizable acid, and has a Tg in the range 0.degree. to 80.degree. C., and wherein copolymer A has a modal molecular weight Mp within the range 100,000 to 700,000.

Abstract: Aqueous latex contact-adhesive compositions comprising at least one vinylidene chloride copolymer comprising polymerized units of vinylidene chloride and at least one internally plasticizing comonomer which may be provided at least in part by at least one alkyl (meth)acrylate having 1 to 12 carbon atoms in the alkyl group (preferably n-butyl acrylate), said copolymer having a modal molecular weight Mp within the range 100,000 to 700,000 and Tg within the range -50.degree. to 10.degree. C., said composition providing contactable layers after drying. The composition preferably includes a tackifying resin.

Abstract: Aqueous latex composition for use as a contact adhesive comprising a copolymer A and a copolymer B where A is an amorphous copolymer which comprises units of certain selected monomers preferably including vinylidene chloride, an internally plasticizing monomer like 2-ethylhexyl acrylate, optionally vinyl chloride, and optionally a copolymerizable acid, and has Tg within the range -50.degree. to <0.degree. C., and B is a crystalline polymer which comprises units of vinylidene chloride and preferably at least one of an alkyl acrylate, alkyl methacrylate and vinyl chloride, and optionally a copolymerizable acid, and has a Tg of not more than 30.degree. C.

Abstract: Aqueous latex composition for use as a contact adhesive comprising a mixture of an amorphous copolymer A and an amorphous copolymer B where A comprises units of vinylidene chloride, an internally plasticizing comonomer like 2-ethylhexyl acrylate or n-butyl acrylate, optionally vinyl chloride and optionally a copolymerizable acid, and has Tg in the range -50.degree. to <0.degree. C., and B comprises units of vinylidene chloride, an alkyl acrylate and/or methacrylate or certain other comonomers, optionally vinyl chloride, and optionally a copolymerizable acid, and has a Tg in the range 0.degree. to 30.degree. C.