Frost-preventive composition

C - Chemistry – Metallurgy – 09 – K

Patent

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C09K 3/18 (2006.01)

Patent

CA 2602809

A frost-preventive composition which can powerfully melt frost or ice and prevent the adhesion of frost over a long period and which little causes sagging even when applied to wall surfaces or the like. A greasy frost- preventive composition which comprises (a) at least one member selected from among glycols, glycol ethers, polyalkylene glycols, polyalkylene glycol derivatives, glycerol, and glycerol derivatives, (b) at least one member selected from among soaps, urea compounds, particulate silica gel, lecithin, and polysaccharides, (c) at least one metal salt selected from among metal carboxylates, metal nitrates, metal phosphates, metal chlorides, and metal bromides, and (d) at least one member selected from among sorbitan fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene alkyl ethers, castor oil, hardened castor oil, polyoxyalkylene castor oils, and polyoxyalkylene hardened castor oils in specified portions respectively.

L~invention porte sur une composition anti-gel capable de faire fondre efficacement le givre ou la glace et d'empêcher l'adhésion du givre sur une longue période, tout en ne provoquant que peu de coulures, même lors d'une application sur des surfaces murales ou analogues. Cette composition anti-gel grasse comprend (a) au moins un élément choisi parmi les glycols, les éthers de glycol, les polyalkylènes de glycol, les dérivés de polyalkylène de glycol, le glycérol et les dérivés de glycérol, (b) au moins un élément choisi parmi les savons, les composés de l'urée, le gel de silice particulaire, la lécithine et les polysaccharides, (c) au moins un sel de métaux choisi parmi les carboxylates de métaux, les nitrates de métaux, les phosphates de métaux, les chlorures de métaux et les bromures de métaux, et (d) au moins un élément choisi parmi les esters d'acide gras de sorbitan, les esters d'acide gras de polyoxyalkylène sorbitan, les éthers de polyoxyalkylène alkyle, l'huile de castor, l'huile de castor hydrogénée, les huiles de castor polyoxyalkylènes et les huiles de castor polyoxyalkylènes hydrogénées, dans des portions respectives spécifiées.

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