Patent GB-538993-A (GB)
Abstract: 538,993. Resinous condensation products. SOC. OF CHEMICAL INDUSTRY IN BASLE. Feb. 22, 1940, No. 3357. Convention date, March 23, 1939. [Class 2 (iii)] Polyhydric alcohols are reacted simultaneously or in any order of succession with a mono-basic carboxylic acid containing at least 10 carbon atoms (except ricinoleic acid), a polybasic carboxylic acid and a mixture, or condensation product containing a methylol group, of an amino-triazine and formaldehyde, to form resinous mixed ether-ester compounds. The reaction with the acids is brought about by heating and that with the mixture or condensation product in the presence of free hydrogen ions and of a monohydric alcohol solvent, if required at raised temperature. Suitable polyhydric alcohols are ethylene, propylene, diethylene, triethylene and phenylethylene glycols, glycerine, erythritol, arabitol, carbitol, mannitol, mannoheptitol, cyclopentanediol, cyclohexanediol, phloroglucinol, quercitol, inositol, glyceraldehyde, glycerine monochlorhydrin, soluble carbohydrates, triethanolamine, glycerine mono-esters and monoethyl ether. The mono-basic carboxylic acids may be saturated or unsaturated and include lauric, myristic, palmitic, stearic, arachaic, hypogaeic, oleic, elaidic, erucic, taririnic, stearolic, linolic, elaeostearic, linoleic, abietic, and pimeric acids. Instead of polyhydric alcohols and mono-basic acids, natural fats and fatty oils may be used by re-esterifying them with polyhydric alcohols or by splitting them and converting with polyhydric alcohols into compounds containing free hydroxyl groups. The polibasic carboxylic acids may be saturated or unsaturated and include malonic, succinic, adipic, sebacic, maleic, fumaric, citraconic and phthalic acids, and anhydrides thereof. The aminotriazines include melamine, melam, melem, melon, ammeline, ammelide, formoguanamine, 2-chloro-4 : 6-diamino-1 : 3 5- triazine, 2-(p-oxyphenyl)-4 : 6-diamino-1 : 3 5- triazine, and 2-phenyl-4-amino-6-oxy-1 : 3 : 5- triazine. Paraformaldehyde may be used in place of formaldehyde which may be mixed with acetaldehyde, benzaldehyde and furfurol. Suitable monohydric alcohol solvents are ethyl, butyl, lauryl, cetyl, stearyl, allyl, vinyl, benzyl and furfuryl alcohols, ethylhexanol, terpineol, borneol, abietinol and wool fat alcohols. Aliphatic or aromatic hydrocarbons and non-solvents may be added. The reaction may be conducted under pressure and in an atmosphere of nitrogen, hydrogen or carbon dioxide. The etherification may proceed with simultaneous or subsequent addition of aniline, urea, thiourea or phenols. The products may be mixed with natural or artificial resins, oils, nitrocellulose, acetyl-cellulose or polyvinyl compounds, to form varnishes, adhesives, agglutinants for fibres, sizes, and textile dressings, dyeings and printings. In an example glycerine (1 mol.) is esterified to an acid number 30 with oleic acid (¢ mol.) and phthalic anhydride (1 mol.) by heating. The resin is dissolved in butyl alcohol (3 mols.) and heated with hexamethylolmelamine 1/3 mol.) after which excess butyl alcohol is distilled to form a viscous resin. The hexamethylolmelamine is made by heating melamine (1 mol.) and neutral formaldehyde solution (6 mols.), cooling and evaporating under reduced pressure. Specifications 486,519 and 486,577 are referred to. The Specification as open to inspection under Sect. 91 comprises also the subject-matter of Specification 539,737. This subject-matter does not appear in the Specification as accepted.