VOC-free coalescing agent
US8691903B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2012 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Apr 3, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.