| 摘要 |
A sulfopolyester containing residues of 2,2,4,4-tetralkylcyclobutane-1,3-diol such as 2,2,4,4-tetramethylcyclobutane-1,3-diol is highly dispersible in water. This allows one to reduce the content of sulfonate groups or reduce the amount of ethylene glycol or other hydrophilic glycols to retain good water resistance in cured coatings. The sulfopolyester may also be a reaction product of a 2,2,4,4-tetralkylcyclobutane-1,3-diol along with 1,4-cyclohexanedimethanol, neopentyl glycol, or a mixture thereof with an acid component. Coating compositions may also contain these sulfopolyesters along with water and a polymer resin. |
