A method for the production of heissklebepraeparationen made of thermoplastic materials and at room temperature solid plasticizers for the coating of brackets made of films, paper and textile

摘要

A heat-sealing adhesive composition is prepared from thermoplastic material dissolved in organic solvent by coating a finely-divided plasticizer compatible therewith with a solution of a polymer containing a carboxyl group or a salt thereof which is substantially insoluble in the organic solvent and dispersing the coated plasticizer in the solution of the thermoplastic material. The thermoplastic material may be an ester of polyacrylic, polymethacrylic, or polycrotonic acid, a polyvinyl ester, or a mixture of an indene resin and ethyl cellulose. The plasticizer may be diphenyl or dicyclohexyl phthalate, an N-alkylated toluenesulphonamide, an alkyl ester of p-toluenesulphonic acid, acetamide, benzophenone, diphenyl carbinol, or dimethyldiphenylurea. The polymer may be an alcohol- or water-soluble polymeric salt of acrylic, methacrylic, crotonic or maleic acid or a copolymer thereof with an acrylic or methacrylic ester, or a polymer of vinyl chloride or acetate, vinylidene chloride, vinylethyl ether or styrene. Specification 624,620 is referred to.ALSO:Paper, aluminium foil, and paper/aluminium foil composites, polyvinyl chloride sheet and polystyrene sheet are coated with a solution of a heat-sealing adhesive composition comprising a thermoplastic material and a finely-divided plasticizer compatible therewith, which plasticizer has been coated with a polymer containing a carboxyl group or a salt thereof which polymer is substantially insoluble in the solvent for the thermoplastic material. The thermoplastic material may be an ester of polyacrylic, polymethacrylic or polycrotonic acid, a polyvinyl ester, or a mixture of indene resin and ethyl cellulose. The plasticizer may be diphenyl or dicyclohexyl phthalate, an N-alkyl toluene sulphonamide, an alkyl ester of p-toluenesulphonic acid, acetamide, benzophenone, diphenyl carbinol, or dimethyldiphenyl urea. The carboxyl group containing polymer may be an alcohol- or water-soluble salt of polyacrylic, methacrylic, crotonic, or maleic acid, or a copolymer thereof with an acrylic or methacrylic ester, or a polymer of vinyl chloride or acetate, vinylidene chloride, vinyl ethyl ether, or styrene. The compositions may be applied by doctor-knife, roller, casting, and screen printing. Specification 624,620 is referred to.