Patent GB-999062-A (GB)
Title: Improvements in or relating to water-dispersible compositions
IPC: C08G63/668
Filed: 1962-01-09
Abstract: The invention comprises the condensate of (a) 70-90% by weight of a drying oil ester of an unsaturated fatty acid of 14 to 20 carbon atoms and an alkanol having up to 12 carbon atoms, and (b) 10-30% by weight of an alkoxy polyalkylene glycol of the general formula RO(CxH2xO)yH where x is 2 or 3, y is an integer giving a molecular weight of 200 to 2500, and R is an alkyl group of up to 20 carbon atoms.  The alkanol preferably has 3 to 6 hydroxyl groups and 3 to 6 carbons.  The esterification is carried out at 15-250 DEG  C. in the presence or absence of a catalyst.  Specified catalysts are alkali and alkaline earth metals, heavy metal oxides, and heavy metal salts, those preferred being lead oxide and stannic chloride.  A coupling solvent may be added to the condensate up to 30% by weight to increase its dispersion range in water, examples being ethers, alcohols and esters, ethylene glycol ethers being preferred.  The drying oil esters may be modified by up to 75% of a polyolefin, polycarboxylic acid or polyhydric alcohol.  Specified drying oil esters are soybean oil, linseed oil, safflower oil, tung oil, perilla oil, chinawood oil, oiticica oil, walnut oil, poppyseed oil, esters of oleic, linoleic, linolenic, ricinoleic, and elaeostearic acids with glycerol, mannitol, sorbitol, penta-erythritol, trimethylolpropane, trimethylol ethane, and 1,3,6-hexane triol.  The condensates are used as paint bases, and insecticide bases.  Many examples illustrate the invention.ALSO:The invention comprises the condensate of (a) 70-90% by weight of a drying oil ester of an unsaturated fatty acid of 14-20 carbon atoms and an alkanol having up to 12 carbon atoms, and (b) 10-30% by weight of an alkoxy polyalkylene glycol of the general formula RO(CxH2xO)yH where x=2 or 3, y is an integer giving a molecular weight of 200-2500 and R is an alkyl group of up to 20 carbon atoms, y is usually 4-50 preferably 7-20 and R may be Me.  The alkanol preferably has 3-6 hydroxyl groups and up to 12 carbon atoms.  The esterification is carried out at 150-250 DEG  C., under an atmosphere of N2 or CO2 and in the presence or absence of a catalyst.  Specified catalysts are alkali and alkaline earth metal, heavy metal oxides and heavy metal salts, those preferred being lead oxide and stannic chloride.  Up to 30% of a coupling solvent may be added to the condensate to increase its solubility in water. Suitable solvents of boiling point 100-200 DEG C. include ethylene chlorohydrin, butanol, ethylene glycol mono, n-hexyl-, monobutyl-, monoethyl-, monomethyl-, monophenyl- and monisoamyl-ethers, the acetates of these ethers, and the corresponding diethylene glycol acetates and ethers.  The drying oil esters may be modified by heating at 200-300 DEG  C./1 atmosphere with up to 75% of benzoic acid, a polyolefin, polycarboxylic acid or ester-forming derivative and/or a polyhydric alcohol.  The polycarboxylic acids may have 2-12 carbon atoms and 2 carbonyl groups, e.g. maleic, fumaric, aconitic, citraconic, itaconic, succinic, glutaric, sebacic, azelaic, tartaric, phthalic and isophthalic.  The polyhydric alcohols may have 3-6 carbon atoms and 3-6 OH groups, e.g. glycerol, mannitol, sorbitol, pentaerythritol, trimethylol propane, trimethylol ethane, 1,3,6-hexane triol, ethylene glycol, diethylene glycol and dipentaerythritol.  The polycarboxylic acid and polyhydric alcohol may be present in equivalent quantities or the latter may be in excess.  Specified drying oils are soybean, linseed, safflower, tung, perilla, chinawood, oiticica, walnut and poppyseed oils, and linoleic, linolenic, ricinoleic and oleostearic esters of the polyhydric alcohols listed above. The products may be mixed with pigments, e.g. TiO2, ZnO, phthalocyanine, lead chromate, molybdate organge, red iron oxide, talc, mica or clay, or fungicides and diluted to a 25-75% aqueous dispersion.  Uses: Bases for paints and insecticides.ALSO:An aqueous paint vehicle comprises the condensate of (a) 70-90% of a drying oil ester of an unsaturated fatty acid of 14 to 20 carbon atoms and an alkanol having up to 12 carbon atoms, and (b) 10-30% by weight of an alkoxy polyalkylene glycol of general formula RO[(CH2)xO]yH of M. wt. 200 to 2500, where x is 2 or 3, R is an alkyl group of up to 20 carbon atoms. Specified drying oils are soybean, linseed, safflower, tung, perilla, china-wood, oiticia, walnut and poppyseed oils, and esters of oleic, linoleic, rinoleic and eleaosteric acids with polyhydric alcohols; these may be modified by polyolefins, polycarboxylic acids or anhydrides, or polyhydric alcohols.  The paint may also contain, in addition to water, other solvents, e.g. ethylene glycol ethers, driers, e.g. Gycloolex; and pigments, e.g. titania, zinc oxide, phthalocyanine blue, lead chromate molybdate orange, iron oxide, talc clay and mica; fungicides and mildewcides.ALSO:Glass-plates are coated with an aqueous paint vehicle comprising (a) 70-90% of a drying oil ester of an unsaturated fatty acid of 14-20 carbon atoms and an alkanol having up to 12 carbon atoms, and (b) 10-30% by weight of an alkoxy polyalkylene glycol of the general formula RO[(CH2)xO]yH where x is 2 or 3, and R is an alkyl group of up to 20 carbon atoms, of molecular weight of 200-2500.  Specified drying oils are soybean, linseed, safflower, tung, perilla, china-wood, oiticia walnut and poppyseed oils, and esters of oleic, linoleic, rinoleic and oleostearic acids with polyhydric alcohols; these may be modified by polyolefins, polycarboxylic acids or anhydrides, or polyhydric alcohols.  The composition may also contain, in addition to water, other solvents, e.g. ethylene glycol ethers, driers and pigments, many of which are specified. The coatings are set by drying.  In a typical example (9), a glassplate is coated with a composition comprising the condensation product of a tall oil ester and methoxy polyethylene glycol, water, butoxy ethanol and a Cyclodex drier.