Abrégé

The present invention relates to new crystalline molecular sieve SSZ-74 prepared using a hexamethylene-1,6-bis-(N-methyl-N-pyrrolidinium)dication as a structure-directing agent, and its use in the reduction of oxides of nitrogen in a gas stream such as the exhaust from an internal combustion engine.

Classes IPC  ?

• B01D 53/56 - Oxydes d'azote
• B01D 53/86 - Procédés catalytiques
• C01B 39/00 - Composés ayant des propriétés de tamis moléculaires et d'échangeurs de base, p.ex. zéolites cristallines; Leur préparation; Post-traitement, p.ex. échange d'ions ou extraction de l'aluminium

Abrégé

A lubricating oil having a CCS viscosity at −15° C. less than 7000 cP, good shear stability, and a TBN between 8 and 20 comprising: a) a lubricating base oil made from a waxy feed, b) an engine oil additive package formulated to protect silver bearings, and c) less than 2.0 wt % viscosity index improver. Also a process to make a lubricating oil having a CCS viscosity at −15° C. less than 7000 cP, good shear stability, and a TBN between 8 and 20. Additionally, a lubricating oil having low CCS viscosity comprising specified amounts of lubricating base oil made from a waxy feed, engine oil additive package formulated to protect silver bearings, up to 55 wt % bright stock with a VI greater than 120, and no viscosity index improver or conventional pour point depressant additives. Also, a method for operating a railroad engine using the lubricating oil of this invention.

Classes IPC  ?

• C10G 71/00 - Traitement par des méthodes non prévues ailleurs d'hydrocarbures ou des huiles grasses en vue de lubrification