Mineral oils: processes and products – Paraffin wax; treatment or recovery – Separation of paraffin from oil
Patent
1982-08-23
1983-12-27
Davis, Curtis R.
Mineral oils: processes and products
Paraffin wax; treatment or recovery
Separation of paraffin from oil
C10G 7304, C10G 7306
Patent
active
044229240
ABSTRACT:
An improved dewaxing aid for solvent dewaxing process comprising a mixture of (A) an .alpha.-olefin polymer having an average molecular weight of from about 10,000 to 1,000,000 and a wide molecular weight distribution exceeding the range of from about 10,000 to 1,000,000 but falling within the range of from about 2,000 to 3,000,000 wherein the .alpha.-olefin polymer is a homopolymer made up of a C.sub.10 to C.sub.25 alpha-olefin monomer or is a copolymer made up of a monomer mixture comprising more than 50 wt. % of at least 2 C.sub.10 to C.sub.25 alpha-olefin monomers and a melt index greater than 1.8 g/10 min. and (B) an olefin vinyl acetate copolymer having a vinyl acetate content of from about 15 to 40 wt. % and an average molecular weight of from about 50,000 to 1,000,000 and a melt index greater than 2 g/10 min. The .alpha.-olefin polymer having a high molecular weight and wide molecular weight distribution, when combined with the olefin-vinyl acetate copolymer, synergistically improves the efficiency of wax separation.
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Komine Kikuji
Naito Tsutomu
Ohashi Fumis
Onodera Takashi
Allocca Joseph J.
Caldarola Glenn A.
Davis Curtis R.
Toa Nenryo Kogyo Kabushiki Kaisha
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