| 摘要 |
A film-forming composition including a coalescent aid comprising fatty acid esters of ethylene glycol and/or propylene glycol having the formula R1COO[(EO)x(PO)y]zH wherein R1CO is a linear saturated aliphatic acyl group, or a combination thereof, having from about 6 to about 22 carbon atoms, EO is —CH2CH2O—, PO is —CH2CH(CH3)O— or —CH(CH3)CH2O— or a combination thereof, where the acyl radical is bonded to a carbon atom of the EO or PO radical, and x=0 to about 5, y=about 0 to about 5, the sum of x and y is equal or greater than 0.5, z=1 to about 5, and (x+y)z is less than or equal to 6. It is to be understood that x, y, and z are average values for the composition. |
