DeCAL - 2020 - Dar-Tech - Rheology Modifier - Thickener

Knowde Enhanced TDS

Identification & Functionality

Chemical Family: Polyurethanes (PU)
CASE Ingredients Functions: Rheology Modifier,
Thickener
Technologies: CASE Ingredients
Product Families: CASE Ingredients — Additives
Rheology Modifiers & Stabilizers

Features & Benefits

Labeling Claims: Solvent-free
CASE Ingredients Features: Excellent Flow,
Good Leveling,
High Gloss,
Sag Resistance
Features: Excellent film build, flow and leveling

High gloss development

Solvent free

Stability over a wide pH range

Resistance to microbial degradation

Applications & Uses

Applications: DeCAL 2020 is specific for a Newtonian rheology profile. This allows development of formulations for gloss and semi-gloss paints for brush applications, with excellent flow and leveling properties. For roller application, however, it is suggested to use it in combination with other more pseudoplastic thickeners.

DeCAL 2020 has strong associative characteristics for the surface of the binder particles. As a consequence, this rheology modifier works more efficiently with a smaller particle size binder. Surfactants compete with the associative network between the rheology modifier and the latex polymer surfaces. This effect could lead to a viscosity reduction. For this reason special attention is needed for the type and amount of surfactant that is used, and the effects of their combination with the binders and the glycols and cosolvents level.

Water insoluble cosolvents, like Texanol, have only a little effect on the viscosity of a paint thickened with DeCAL 2020.

Water soluble cosolvents, however, reduce the low shear viscosity. Ethylene glycol and propylene glycol have the least effect. Butyl Carbitol has the greatest viscosity suppression effect among the cosolvents.

DeCAL 2020 rheology modifier is supplied as a pourable and pumpable liquid, free of solvent. It can be added to the mill-base or during letdown.

Properties

Packaging & Availability