Improvements relating to the reclaiming of waste wax paper

摘要

Amino-amides having the general formula where R1 represents an aliphatic chain containing at least 7 carbon atoms, R2 represents hydrogen or a 1 to 3 carbon atom alkylol group and n is 2 or 3 when R2 represents a hydrogen atom and is 1, 2 or 3 when R2 represents an alkylol group are prepared by reacting a suitable fat or fatty acid with a polyalkylene polyamine or with an alkylene or polyalkylene alkylol polyamine, generally at a temperature of from 150 DEG to 210 DEG C. The resulting amino-amides may be converted into glyoxalidines by heating at elevated temperature, e.g. about 300 DEG C., to drive off a molecule of water. The amino-amides and the glyoxalidines may be solubilized by treatment with an aliphatic monocarboxylic acid of 1 to 3 carbons, e.g. acetic, formic or glycollic acid or with a suitable ester of a mineral acid such as diethyl sulphate, triethyl phosphate or ethyl iodide forming soluble acid salts or alkylated derivatives respectively. The amino amides and glyoxalidines and the solubilized derivatives are utilized in the reclaiming of waste wax paper (see Group VIII). In examples: (1) hydrogenated soyabean oil and ethanol ethylene diamine are condensed in a closed vessel at 150 DEG C. for 6-8 hours and the product, believed to be an amino-amide, is solubilized by treatment with aqueous acetic acid; (2) peanut oil and diethylene triamine are similarly condensed to form an amino-amide; (3) the reactants of (2) are heated at between 180 DEG -190 DEG C. for 20 minutes and then the temperature is rapidly raised to 300 DEG C. to form the glyoxalidine. Other reagents mentioned are ethanol diethylene triamine and triethylene tetramine and generally any fatty acid or fatty acid glyceride having from 8 to 24 carbon atoms in the chain, e.g. oleic acid, ricinoleic acid, lauric acid, stearic acid and palmitic acid. Specification 524,847 is referred to.ALSO:Amino-amides having the general formula where R1 represents an aliphatic chain containing at least 7 carbon atoms, R2 represents hydrogen or a 1-3 carbon atom alkylol group and n is 2 or 3 when R2 represents hydrogen and is 1, 2 or 3 when R2 represents an alkylol group, the glyoxalidines cyclized therefrom or solubilized derivatives, specifically, soluble acid salts or alkylated derivatives, of either are utilized in a process for reclaiming wax paper broke which comprises disintegrating the broke in water heated to a temperature sufficiently high to meet the wax constituent and adding one of the above mentioned compounds to the fibre and wax suspension to fix the wax on the fibre (see Group VIII). The preparation of the compounds is described (see Group IV (b)). Typical compounds are the amino amide obtained by reacting hydrogenated soyabean oil with ethanol ethylene diamine and the amino-amide and corresponding glyoxalidine obtained from peanut oil and diethylene triamine. Specification 524,847 is referred to.ALSO:Paper fibres, obtained by disintegrating waste wax-paper in water at a temperature sufficient to melt the wax, are wax-sized by adding a cationic surface active fixing agent which is an aminoamide having the general formula R1 CO (NH CH2 CH2) nNHR2, or the corresponding glyoxalidine or a solubilized quaternary derivative of either having additional radicals R2 and Z: R1 being an aliphatic chain with at least 7 C atoms; R2 being H or a 1 - 3C alkylol group; n being 2 or 3 when R2 is H or 1, 2 or 3 when R2 is alkylol; R3 being H or a 1 - 3C alkyl group, and Z the anion of a 1-3C aliphatic monocarboxylic or mineral acid. A cationic agent having the formula C17H35CONHC2H4NHC2H4OH, made by condensing hydrogenated soya bean oil with ethanol ethylene diamine may be used and an aliphatic monocarboxylic acid having 1-3C atoms, e.g. acetic acid may be added to attain pH.6. In the case of the glyoxalidines R1 may be a mixture of the alkyl radicals from peanut oil. Specification 524,847 and U.S.A. Specification 2,183,259 are referred to.