Patent GB-1119367-A (GB)
Title: Process for providing a shaped article made from a synthetic crystallisable polyester with a durable modified surface
Inventor: ROBERTSON MICHAEL MUNDIE
IPC: C08J7/04
Filed: 1964-07-22
Abstract: A composition suitable for use in the treatment of textile materials and films made from an essentially linear synthetic crystallizable polyester comprises a water-insoluble crystallizable polymeric compound having a crystalline melting-point above 100 DEG  C. measured by the temperature of disappearance of birefringence and containing crystallizable segments of repeat units identical with the repeat units forming the crystallizable portions of polyester textile materials or films and at least one active group serving to modify the surface of the materials treated selected from an acidic group, a basic group, an ionizable salt group, a water-solvatable polymeric group, i.e. a polymeric polyoxyalkylene group derived from a polyoxyalkylene compound having an average molecular weight of 300-6000, an antioxidant group, a group which contains silicon- or flourine-based water-repellent groups, a dye-stuff group and a polymeric group containing a plurality of alcoholic hydroxyl or -CO-NH-radicals, and a swelling agent for the polyester from which the textile material or film is made, e.g. benzaldehyde, benzyl alcohol, methyl salicylate, chloroform, trichloroethylene, o-dichlorobenzene, dimethyl phthalate, methylene chloride, diethyl oxalate, diethyl succinate, methyl iodide, tetrachloroethane, o-phenylphenol and 1-phenylethanol. The acidic group may be a carboxylic, sulphonic or phosphonic acid and the basic group may be a nitrogenous basic group and may be in the form of their ionizable salts instead of as the unneutralized acid or base.  The composition may also contain an inert diluent which is not a swelling agent for the materials treated, dye-stuffs, optical brightening agents, dyeing assistants, antioxidants, protective colloids, e.g. gelatine, and a dispersing or surface-active agent, e.g. sulphonated castor oil, sodium salts of sulphonated alkylated naphthalenes or alkyl ether phosphates.ALSO:Textile materials and films made from an essentially linear synthetic crystallisable polyester are treated with a water insoluble crystallisable polymeric compound having a crystalline melting point above 100 DEG C measured by the temperature of disappearance of birefringence and containing crystallisable segments of repeat units identical with the repeat units forming the crystallisable portions of polyester textile materials or films and at least one active group serving to modify the surface of the materials treated selected from an acidic group, a basic group, an ionisable salt group, a water solvatable polymeric group, i.e. a polymeric polyoxyalkylene group derived from a polyoxyalkylene compound having an average molecular weight of 300-6,000, an antioxidant group, a group which contains silicon- or fluorine-based water-repellent groups, a dyestuff group and a polymeric group containing a plurality of alcoholic hydroxyl or -CO-NH-radicals in the presence of a swelling agent for the polyester from which the textile material or film is made, e.g. benzaldehyde, benzyl alcohol, methyl salicylate, chloroform, trichloroethylene, odichlorobenzene, dimethyl phthalate, methylene chloride, diethyl oxalate, diethyl succinate, methyl iodide, tetrachloroethane, o-phenylphenol and 1-phenylethanol. The acidic group may be a carboxylic, sulphonic or phosphonic acid and the basic group may be a nitrogenous basic group and may be in the form of their ionisable salts instead of as the unneutralised acid or base.  If the active group is acidic the materials treated are rendered more receptive to basic dyestuffs and if basic more receptive to acid dyestuffs.  When the active group is a water-solvatable polymeric group, the materials are rendered anti static and have increased adhesion to adhesives, gums and sizes.  The crystallisable polymer and swelling agent may be applied to the textile materials or films separately or together as the molten material, as a solution in a solvent or as a suspension or dispersion in a liquid medium, e.g. water, which may also contain an inert diluent which is not a swelling agent for the materials treated in the disperse phase, dyestuffs, optical brightening agents, dyeing assistants, antioxidants, protective colloids, e.g. gelatine, and a dispersing or surface active agent, e.g. sulphonated castor oils, sodium salts of sulphonated alkylene naphthalenes or alkyl ether phosphates.  The treatment may be effected at room temperature or at 60 DEG -140 DEG C. Fabrics comprising polyester fibres alone or in admixture with cotton or wool fibres may be treated.