Flatting agent and method for the production thereof
专利汇可以提供Flatting agent and method for the production thereof专利检索，专利查询，专利分析的服务。并且Up to 40 per cent of a flatting agent prepared by dispersing a fossil, semi-fossil or semi-recent Congo resin having a direct acid number above 60 in a heated aqueous solution of an alkali metal hydroxide and adding a water-soluble salt of a metal selected from the group consisting of aluminium, calcium, magnesium, barium, strontium, zinc and zirconium (see Group III), is incorporated into alkyd resin or nitrocellulose coating compositions. The flatting agent is ground into a paste in low solvency petroleum thinners (e.g. mineral spirits or xylol) and then stirred into the coating composition. Small amounts of highly polar solvents, e.g. n-butyl alcohol and the monobutyl ether of ethylene glycol may also be present. In examples: (1) nitrocellulose, ethyl alcohol, blown castor oil, butyl acetate, ethyl acetate, butyl alcohol, toluol and the flatting agent are ground together to a paste and stirred into a clear lacquer; (2) or 2-5 per cent of the flatting agent may be ground with 95-98 per cent of a clear lacquer containing 15-20 per cent nitrocellulose and then diluted with the lacquer solvent to the required viscosity.ALSO:A flatting agent is prepared by dispersing a fossil, semi-fossil or semi-recent Congo resin having a direct acid number above 60 in a heated aqueous solution of an alkali metal hydroxide and adding a water-soluble salt of a metal selected from aluminium, calcium, magnesium, strontium, barium, zinc and zirconium. Specified water-soluble salts are aluminium, calcium and barium chlorides, nitrates and acetates, zinc and strontium chlorides and nitrates, magnesium chloride and sulphate and zirconium chloride, nitrate and sulphate, and specified hydroxides are those of sodium potassium and lithium.，下面是Flatting agent and method for the production thereof专利的具体信息内容。
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