9.6 Novel Urethane Associative Thickeners for Waterborne Coatings Based on Hydrophilic Binders
(Room 243-245)
10 Apr 18
5:00 PM
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5:30 PM
Tracks:
Session 9: Architectural Coatings II
Thickeners are included in coating formulations to give specific rheological properties. A coating’s rheology influences its properties during manufacture, storage, and application. Also, choice of thickener influences coatings dried film performance.
Two types of thickeners are available to waterborne coatings – Non Associative and Associative.
Both class of thickeners aid coating’s manufacturing and storage properties. However, they differ in application and in the final dried film properties.
Non associative thickeners are Cellulosic and Acrylic based. These coatings have poor application properties.
Associative thickeners are available in three categories to waterborne coatings –Hydrophobically Modified – Cellulosic (HMHEC), Acrylic (HASE) and Urethane (NiSAT) thickeners.
Urethane thickeners offer waterborne coatings excellent application and overall dried film performance property outperforming both HMHEC and HASE thickeners.
Performance of Urethane associative thickeners has usually been a compromise of positive and negative features. For example, it associates effectively with hydrophobic binders. However, it faces challenges when used with hydrophilic binders.
Our recent advances in Urethane thickener technology have allowed for a significant step forward in performance of waterborne coatings based on hydrophilic binders. This presentation will show how advances in Urethane thickener technology are now providing architectural waterborne coatings based on hydrophilic binders with a) optimal thickening efficiency and b) superior application and dried film performance properties.