Patent ID: 7972497
Filing Date: 2011-07-05
Classification: C10G,C10M,C10N,Y02E,Y10S

Abstract:
1. A process to prepare a heat transfer oil, comprising: a. dewaxing a substantially paraffinic wax feed by hydroisomerization dewaxing using a shape selective intermediate pore size molecular sieve under hydroisomerization conditions including a hydrogen to feed ratio from about 712.4 to about 3562 liter H b. selecting one or more fractions of the lubricating base oil having: c. blending the one or more fractions of the lubricating base oil with less than 0.2 wt % antifoam agent to prepare the heat transfer oil of an ISO viscosity grade selected from the group of ISO 10, ISO 15, ISO 22, ISO 46, ISO 68, ISO 100, ISO 150, and ISO 220.