Table 1--Effect of Three Thickener Chemistries on Rheological Properties (a) Semigloss Paint HMHEC plus High High 30PVC/38VS Conventional Performance Performance HEUR HEUR #1 HEUR #2 HMHK 1.5 lb/100 gal No No Equil.
Figure 12 shows topography images comparing high-performance HEUR surface roughness and conventional HEUR with HMHEC surface roughness.
Paint 2 contains HMHEC and conventional HEUR technology.
"The result is an attractive alternative to HMHEC for thickening a full range of waterbome latex coatings, from flat to semi-gloss and across all binder types."
In many formulations, ACRYSOL DR-110 Rheology Modifier builds viscosity with noticeably better efficiency than either HMHEC or HEC, resulting in notable use-cost savings.
Table 2: CMC and HLB values of surfactants (33) Surfactant CMC (mM) CMC (wt%) HLB Triton X-45 0.11 0.0045 9.8 Triton X-100 0.24 0.0150 13.4 Triton X-102 0.28 0.022 14.4 Triton X-405 0.81 0.16 17.6 CMC, critical micelle concentration A number of studies cited above (1), (3-9), (13-15), (17), (19), (20), (22-25), (27-31) addressed the effect of surfactants on the behavior of HEUR, HASE, and HMHEC associative thickeners.
(40-46) They have been utilized to probe hydrophobic interactions in aqueous solutions of HEUR, (43) HASE, (42) HMHEC, (45) and other (44), (46) polymers.