Methods and compositions for improvement of low temperature fluidity of
fuel oils
    123.
    发明授权
    Methods and compositions for improvement of low temperature fluidity of fuel oils 失效
    用于改善燃料油低温流动性的方法和组合物

    公开(公告)号:US5857287A

    公开(公告)日:1999-01-12

    申请号:US928289

    申请日:1997-09-12

    Abstract: Adding to a fuel oil a composition of from about 1 to about 40 parts by weight ethylene/vinyl acetate copolymer having a vinyl acetate content of from about 10% by weight to about 50% by weight and a weight average molecular weight of from about 2,000 to about 10,000, and 1 part by weight esterified copolymer of at least one generally linear .alpha.-olefin of from about 18 to about 50 carbon atoms and maleic anhydride in an .alpha.-olefin to maleic anhydride molar ratio of from about 4:1 to about 1:2, the copolymer having a weight average molecular weight of from about 2,000 to about 20,000, the esterified copolymer having been esterified with a plurality of aliphatic alcohols having from about four to about forty carbon atoms, imparts to the fuel oil surprisingly improved low temperature fluidity, provided that the alcohols include an eight carbon alcohol making up from about 50 to about 85 molar percent of the alcohols.

    Abstract translation: 向燃料油中加入约1至约40重量份的乙酸乙烯酯含量为约10重量%至约50重量%且重均分子量约2,000的乙烯/乙酸乙烯酯共聚物的组合物 至约10,000份和1份(重量)的至少一种约18至约50个碳原子的通常直链的α-烯烃和马来酸酐在α-烯烃与马来酸酐摩尔比为约4:1至约 1:2,共聚物的重均分子量为约2,000至约20,000,酯化的共聚物已被多个具有约4至约40个碳原子的脂族醇酯化,赋予燃油明显改善的低 温度流动性,条件是醇包括构成约50至约85摩尔%的醇的8个碳醇。

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