C - Chemistry – Metallurgy – 10 – L
Patent
C - Chemistry, Metallurgy
10
L
C10L 1/22 (2006.01) C07C 213/10 (2006.01) C08F 8/30 (2006.01) C10M 159/16 (2006.01) C10M 177/00 (2006.01) C07C 215/50 (2006.01)
Patent
CA 2357448
The present invention provides a method for removing excess amounts of water- soluble amines from a diluted crude Mannich condensation product containing about 40 to 80 weight percent crude Mannich condensation product in an inert solvent which comprises: a) filtering the diluted crude Mannich condensation product in the presence of magnesium silicate and water, and in the further presence of a filter aid when the particle size distribution of the magnesium silicate is such that the average particle size is below about 50 microns; and b) recovering a filtrate containing a Mannich condensation product having less than about 0.05 mEq/g of water-soluble amine.
Chevron Oronite Company Llc
Sim & Mcburney
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