Patent ID: 7931824

Claim:
A polymerizable surfactant composition having the general formula: wherein X is an anion; Y 1 and Y 2 each are a hydrophobic tail group consisting of a linear alkylene group attached to a polymerizable group P, with the tail group as a whole having at least 10 carbon atoms; Z 1 , Z 2 , Z 3 , Z 4 , Z 5 and Z 6 each are hydrogen or a hydrophobic tail group comprising from 1 to 12 carbon atoms; and L is a spacer group which comprises an alkylene group having from 1 to 12 carbon atoms, comprises 1 to 6 ether groups or is —(CH 2 CH 2 —(O—CH 2 —CH 2 ) p —, where p is 1 to 3.