| abstract |
PROBLEM TO BE SOLVED: To provide a foaming agent for a bubble shield method excellent in foaming power and biodegradability. The following general formula (1) RCH = CH (CH 2 ) n SO 3 Z (1) (Wherein R is an aliphatic hydrocarbon group having 8 to 30 carbon atoms, n is 0 to 5, and Z is an alkali metal and / or alkaline earth metal). A foaming agent for a bubble shield method, characterized by comprising: [Selection figure] None |