In Reply to: Acrylic Terpolymer - Thickening Problems - Help! posted by Greg Keiser on 06/29/00 at 11:48 AM:
It sounds as though Sybron have made changes to the emulsion R/M's or the process which is resulting in variations, maybe including the molecular weight. If the MW of an acid functional emulsion varies it will affect the viscosity enormously.
As a short term solution you could try using some Rheolate 288 thickener from Rheox. This has good thickening power and is designed for clear coating on timber, it does not contribute to the colour and retains the crystal clarity required. I suggest you talk to your local Rheox agent (where are you, Victoria?)
Longer term we could help you with another emulsion thickener, reformulate your coating for you on another thickening system or help Sybron with their product variation.
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