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Oil compositions containing copolymers of ethylene and vinyl esters of c{11 to c{11 monocarboxylic acid ethylenically unsaturated

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专利汇可以提供Oil compositions containing copolymers of ethylene and vinyl esters of c{11 to c{11 monocarboxylic acid ethylenically unsaturated专利检索,专利查询,专利分析的服务。并且Copolymers of 6,500 to 50,000 and preferably of 7,000 to 15,000 number average molecular weight, comprising 3 to 40 molar proportions of ethylene per molar proportion of vinyl ester of C2 to C5 monocarboxylic acid are flow improvers for distillate mineral oil, e.g. middle distillate fuel oil.,下面是Oil compositions containing copolymers of ethylene and vinyl esters of c{11 to c{11 monocarboxylic acid ethylenically unsaturated专利的具体信息内容。

  • 2. A composition as claimed in claim 1, wherein said copolymer contains about 5 to 15 molar proportions of ethylene, said vinyl ester is vinyl acetate, and said number average molecular weight is about 7,000 to 15,000.
  • 3. A composition consisting essentially of a petroleum distillate fuel oil boiling in the range of 250*to 750* F. and as a flow improver about 0.005 to 0.5 weight percent of a flow-improving copolymer consisting essentially of ethylene and vinyl acetate in a relative molar ratio of about 5 to 15 molar proportions of ethylene per molar proportion of vinyl acetate, said copolymer consisting essentially of molecules having a molecular weight in the range of 6,500 to 50,000 and substantially free of molecules having a molecular weight below about 6,500.
  • 4. A composition as claimed in claim 3, wherein said copolymer consists essentially of molecules having a molecular weight in the range of 7,000 to 15,000.
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