Patent ID: 8119581
Filing Date: 2012-02-21
Classification: C10M,C10N

Abstract:
1. A process for modifying the temperature-dependent behavior of a non-crosslinkable organic media (A) comprising: adding crosslinked microgels (B) to the non-crosslinkable organic media (A), thereby forming a modified non-crosslinkable organic media composition capable of use at temperatures of at least 100° C., wherein the non-crosslinkable organic medium (A) is selected from the group consisting of: saturated hydrocarbons, aromatic hydrocarbons, mineral oils, synthetic hydrocarbon oils, natural ester oils, synthetic ester oils, polyether oils, polyether ester oils, and phosphoric acid esters, further wherein the non-crosslinkable organic medium (A) has a viscosity of less than 200 mPas at a temperature of 120° C., wherein the non-crosslinkable organic medium (A) has a characteristic number that is increased by at least 10% via the adding of the crosslinked microgels (B), said characteristic number being calculated according to the formula (I): where L is the kinematic viscosity at 40° C. of a reference medium with a characteristic number 0, which has the same kinematic viscosity at 100° C. as the non-crosslinkable organic medium (A), H is the kinematic viscosity at 40C of a reference medium with a characteristic number 100, which has the same kinematic viscosity at 100° C. as the non-crosslinkable organic medium (A), and U is the kinematic viscosity at 40° C. of the non-crosslinkable organic medium (A), and further wherein the crosslinked microgels (B) comprise primary particles having an average particle diameter of 5 to 500 nm.