Patent ID: 8449979

Claim:
A bilayer membrane vesicle, comprising molecular aggregates containing: (a) a fatty acid salt having 6 to 20 carbon atoms; (b) an alcohol or an amine compound having an aliphatic chain of 6 to 20 carbon atoms; (c) an artificial synthetic lipid or a phospholipid capable of forming a bilayer membrane; and (d) a tertiary amine compound represented by the following formula II: wherein one or two of R 2 , R 3 , and R 4 is a methyl group, and the remaining R 2 R 3 and R 4 is each independently —CH 2 COOC n H 2n+1 or —C n H 2n+1 , or —C 6 H 4 -p-C n H 2n+1 , where n is an integer of 6 to 20, and —C n H 2n+1 is linear.