Mineral oils: processes and products – Paraffin wax; treatment or recovery – Chemical treatment
Reexamination Certificate
2007-09-11
2007-09-11
Caldarola, Glenn (Department: 1764)
Mineral oils: processes and products
Paraffin wax; treatment or recovery
Chemical treatment
C208S049000, C208S058000, C208S059000, C208S062000, C502S064000, C502S066000, C502S074000, C585S310000, C585S734000, C585S736000, C585S737000
Reexamination Certificate
active
10450397
ABSTRACT:
For producing very high quality base stock and for simultaneously producing high quality middle distillates, successive hydroisomerisation and catalytic dewaxmg steps are employed wherein the hydroisomerisation is carried out in the presence of a catalyst containing at least one noble metal deposited on an amorphous acidic support, the dispersion of the metal being 20%-100%. The support is preferably an amorphous silica-alumina. Catalytic dewaxing is carried out in the presence of a catalyst containing at least one hydrodehydrogenating element (group VIII) and at least one molecular sieve selected from ZBM-30, EU-2 and EU-11.
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Benazzi Eric
Cseri Tivadar
Gueret Christophe
Marchal-George Nathalie
Marion Pierre
Caldarola Glenn
Institut Francais du Pe'trole
Millen White Zelano & Branigan P.C.
Singh Prem C.
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