Patent GB-620697-A (GB)
Title: Improvements in and relating to synthetic wax-resin compositions
IPC: C08L91/06
Filed: 1946-07-04
Abstract: A resinous composition comprises: (1) a synthetic wax obtained by effecting reaction between a primary amine and a chlorinated phthalic acid or anhydride; and (2) a resinous compound which is the product of reaction of a glycol, a chlorinated compound as defined (1), and a modifying substance selected from the class consisting of (a) fatty oils, (b) fatty acids having from 10 to 33 carbon atoms inclusive, and (c) fats and waxes containing the fatty acids defined in (b), said resinous compound (2) being compatible with the synthetic wax (1).  The product is flame-resistant when the final product contains at least 30 per cent, preferably 35 per cent chlorine.  Plasticizers such as tricresyl phosphate, dibutyl phthalate, dioctyl phthalate, dibenzyl sebacate, triphenyl phosphate and dicapryl phthalate may be incorporated.  For impregnating fibre-covered wire, the resins and waxes are preferably prepared from highly chlorinated acids, particularly tetrachloro-phthalic acid or anhydride.  The fibre may be paper, cotton, silk, nylon, rayon, glass fibre, mineral wool, or asbestos, the impregnant being applied molten or dissolved in solvent naphtha or toluene.  In examples: (1) the wax is prepared by refluxing a mixture of monoamyl amines and tetrachlorophthalic anhydride in an inert solvent, and the resin is prepared by heating in an inert atmosphere tetrachlorophthalic anhydride, ethylene glycol, and stearic acid with triphenyl phosphite as oxidation inhibitor.  The wax is added to the molten resin with tricresyl phosphate as plasticiser; (4) the wax is prepared by heating tetrachlorophthalic anhydride and commercial dodecyl amine to 200 DEG C. in an inert atmosphere and the resin by heating ethylene glycol, tetrachlorophthalic anhydride and coconut oil fatty acids to 200-210 DEG  C.; (5) the wax prepared as in example 4 is compounded with a resin prepared by heating together ethylene glycol, tetrachlorophthalic anhydride and commercial stearic acid; (6) the wax is prepared by reacting tetrachlorophthalic anhydride and commercial octadecylamine; (9) the wax is prepared from a mixture of tetrachlorophthalic anhydride, n-butyl amine and inert solvent. Mono-, di-, or tri-chlorophthalic anhydride, together or separately, may be substituted for all or part of the tetrachlorophthalic anhydride if flame-resistance is not essential.  Monoamines are specified for preparing the wax, including saturated and unsaturated aliphatic amines, and unsubstituted or chlorinated aromatic, aliphatic-aromatic, and aromatic-aliphatic amines, preferably having 3 to 12 carbon atoms.  Other suitable resins include those of examples 5, 6, 7, 8, 9, 11 of Specification 620,698, or as obtained in example (10) by heating in an inert atmosphere tetrachlorophthalic anhydride, propylene glycol, oleic acid, and triphenyl phosphite. The products may be used also as coating or impregnating agents for metal, wood, inorganic, natural, or synthetic fibres, e.g. cotton, silk, nylon, rayon, as modifiers of paraffin wax, asphalt or other bituminous material, alone or mixed with oils as dielectrics, or combined with paper, "Cellophane" (Registered Trade Mark), cellulose esters, natural and synthetic resins, as components of coating compositions or polishes, or as impregnants for electrical coils.ALSO:Synthetic waxes, for use in flame-resistant synthetic resin compositions (see Group IV (a)) are prepared by reacting a primary amine with a chlorinated phthalic acid or anydride.  For use in impregnating fibre-covered wire the resins and waxes are preferably prepared from highly chlorinated acids, particularly tetrachlorophthalic acid or anhydride.  In examples, the waxes are prepared: (1) by refluxing a mixture of monoamyl amines and tetrachlorophthalic anhydride in an inert solvent; (4) by heating tetrachlorophthalic anhydride and commercial dodecylamine at 200 DEG C. in an inert atmosphere; (9) by reacting n-butylamine and tetrachlorophthalic anhydride.  Mono-, di-, or trichlorophthalic anhydrides together or separately may replace all or part of the tetrachlorophthalic anhydride.  Mono-amines specified include saturated and unsaturated aliphatic amines, and unsubstituted or chlorinated aromatic, aliphatic-aromatic amines, preferably of 3 to 12 carbon atoms.  Specification 620,698, [Group IV (a)], is referred to.