Patent GB-793934-A (GB)
Title: Process for the improvement of the surface properties of high polymeric substances free from cellulose or its derivatives
IPC: C08J7/046
Filed: 1955-02-21
Abstract: High non-cellulosic polymers in the form of films, sheets, slabs or blocks, made from polymers such as polyacrylic or polyvinyl compounds, polystyrols, polyamides, polyesters, and natural, synthetic or regenerated rubber, are treated with salts in which the anion and the cation are both organic.  Such salts are prepared by mixing equimolecular propertions of anionic and cationic surface-active agents (of which numerous examples are given) or by co-precipitation from mixed aqueous solutions of such surface-active agents, and may be applied either as a solution or dispersion in water, or as a solution in an organic solvent.  In either case the liquid is sprayed, sprinkled, or spread on the polymer surface, or alternatively the salt may be applied in the molten state, the polymer in this case being rolled or dipped in the melt.  After treatment the surface is squeezed free from surplus liquid and dried. The treatment is said to confer homogenization on the surface layer, increase resistance to slip, to decrease or eliminate electrostatic charging of the surface, and to give increased mechanical strength. Specifications 757,119, [Group V], and 775,976 are referred to.ALSO:High non-cellulosic polymers in the form of films, sheets, slabs, or blocks, made from polymers such as polyacrylic or polyvinyl compounds, polystyrols, polyamides, polyesters, and natural, synthetic or regenerated rubber, are treated with salts in which the anion and the cation are both organic.  Such salts are prepared by mixing equimolecular proportions of anionic and cationic surface-active agents (of which numerous examples are given) or by co-precipitation from mixed aqueous solutions of such surface-active agents, and may be applied either as a solution or dispersion in water, or as a solution in an organic solvent.  In either case the liquid is sprayed, sprinkled or spread on the polymer surface, or alternatively the salt may be applied in the molten state, the polymer in this case being rolled or dipped in the melt.  After treatment the surface is squeezed free from surplus liquid and dried. The treatment is said to confer homogenization on the surface layer, increase resistance to slip, to decrease or eliminate electrostatic charging of the surface, and to give increased mechanical strength. Specifications 757,119, [Group V], and 775,976, [Group IV (c)], are referred to.ALSO:High non-cellulosic polymers in the form of films, sheets, slabs or blocks, made from polymers such as polyacrylic or polyvinyl compounds, polystyrols, polyamides, polyesters, and natural, synthetic or regenerated rubber, are treated with salts in which the anion and the cation are both organic.  Such salts are prepared by mixing equimolecular proportions of anionic and cationic surface-active agents (of which numerous examples are given) or by co-precipitation from mixed aqueous solutions of such surface active agents, and may be applied either as a solution or dispersion in water, or as a solution in an organic solvent.  In either case the liquid is sprayed, sprinkled or spread on the polymer surface, or alternatively the salt may be applied in the molten state, the polymer in this case being rolled or dipped in the melt.  After treatment the surface is squeezed free from surplus liquid and dried. The treatment is said to confer homogenization on the surface layer, increase resistance to slip, to decrease or eliminate electrostatic charging of the surface, and to give increased mechanical strength. Specifications 757,119 and 775,976 [Group III] are referred to.