The Universal Selection Source: Coatings Ingredients

Coatex
Thanks to its robust range of thickeners and dispersing agents, Coatex provides technical solutions to recurrent formulators issues (color acceptance, storage stability, water resistance...) for waterborne wall paint, wood coating and specialty coating formulations.

Workability/Ease of Application

Film build / brushability

Covering power results from the combination of the coating's inherent opacity depending mostly on fillers, pigments and pigment volume concentration (PVC) and the thickness transferable onto the support.

Rheology should therefore help produce sufficient thickness deposited at every application (the film build), while maintaining ease of application (brushability). These properties can be quantified by measuring viscosity at high velocity gradient.

In this area, polyurethane type newtonian thickeners (HEUR) prove entirely suitable.

The most newtonian acrylic thickeners (HASE) are also capable of imparting excellent control of the film build effect, which helps mask the support's blemishes more effectively whereas cellulose type thickeners (HEC) often present major shortcomings.

Excellent covering power is not only given by the type and amount of fillers present in the formulation, but also thanks to a specific rheology.
A good control of the rheology during application (corresponding to high shear rate) contributes to a good film build and a good brushability.

Low hiding power with conventional cellulosic thickeners
With conventional
cellulosic thickeners
High hiding power with Coapur 3025
With Coapur™ 3025
Coatex rheology modifiers are specifically designed to provide higher film build in architectural paints and wood stains formulations.

Compared to cellulosic thickeners, as shown in the pictures, high hiding power can be obtained by using newtonian Coapur™ thickeners, such as Coapur™ 3025.

Hiding surface imperfections with excellent coverage even in coatings is also possible with newtonian Rheotech™ thickeners, such as Rheotech™ 2800.


Adaptability to application tool

Coatex thickener Thixol™ 53 L is adapted to brush and spray applications.

For spray application, the paint needs to be free-flowing and easy to manipulate while being sprayed and then to recover its initial viscosity within a short time when it is allowed to remain at rest. Thanks to these qualities, a thixotropic paint can be sprayed-applied in thicker films without running or sagging.

Coatex rheology modifiers are specifically designed to provide higher film build in architectural paints and wood stains formulations
Figure 1: Thixotropic character

The shear rate nozzle is approximately at 10-5 and 10-1 on the substrate.

Coatex thickener Thixol™ 53 L can be applied in various ways thanks to its very large thixotropic character.

Dilution resistance

Below is a test composition of an interior coating formulation based on styrene acrylic binder:

Rheotech 4800 demonstrates better water-dilution resistance and storage stability
Figure 2: The stormer viscosity (KU) properties of thickener

Rheotech™ 4800 demonstrates better water-dilution resistance and storage stability .

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Product Selection

Products and Documents
Description
Download
Polyurethane Thickener
Access this presentation featuring Coadis™ 123 K, a hydrophobic dispersing agent which can help formulators to improve the surface of the film and increase water repellency.
Dispersant
Polyurethane Thickener
Dispersant
Dispersant
Thickener
Thickener
Acrylic associative Thickener
Acrylic associative Thickener
Acrylic associative Thickener
Acrylic associative Thickener
Dispersant
Dispersant
Polyurethane Thickener
Polyurethane Thickener
Polyurethane Thickener
Polyurethane Thickener
Polyurethane Thickener
Polyurethane Thickener
Dispersant
Dispersant
Access this Case Study featuring Rheotech™ 2800, a VOC-free and APEO-free associative thickener which enables to avoid color float, increase tinting strength and limit viscosity drop.
Read this Case Study featuring Coapur 975 W and discover how it can help you develop low emission paints that offer optimal application properties and excellent color acceptance.
Access this Case Study featuring Coadis™ 144 A, a pigment dispersant designed for a wide variety of rutile TiO2. It provides outstanding performance to a broad spectrum of waterborne exterior and interior coatings.
Read this Case Study featuring Rheotech 3800™, and acrylic associative thickener, which enables to make cost savings by using less thickener while matching the perfect rheological balance in waterborne matt & semi-gloss paints.
Access this Case Study and learn more about Rheotech™ 4800, an acrylic associative thickener providing excellent leveling properties and improved color acceptance to water-based flat & matt paints.
Access this presentation introducing the Bumper technology™, a dispersing technology which enables Coating formulators to achieve effective TIO2 reduction. It can be used with various binders and for any kind of paint (from matt to gloss).
Read this Case study to learn more about Coadis™ BR 85 and Coapur™ XS 22 designed to address the recurrent challenge (high gloss, good stability...) of Alkyd emulsion based formulations.
29 items matching your search
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Case Studies from Rheology Modifiers Solutions Center

Improve coating durability and application flexibility for water-based formulations

Are long lasting, high-performance coatings critical to your business? While minimizing maintenance work and end-user cost, they also ease the workload by providing application flexibility.
To meet these two objectives, you have one effective solution: improve water resistance!

Download this Case Study and discover a combination of two rheology additives that can enhance water resistance of your water-based formulations.

Download

Develop ecofriendly water-based paints with excellent color acceptance and optimal application properties

Coapur™ 975 W is a zero-VOC & APEO-free thickener which, used in combination with Ecodis™ P50, enables the formulation of eco-friendly water-based paints. These rheological additives can help you develop low emission paints that offer optimal application properties and excellent color acceptance.

Download

Get effective TiO2 dispersion for your whole Coatings range thanks to a unique dispersant, Coadis™ 144 A

Coadis™ 144 A is a pigment dispersant specifically designed for a wide variety of rutile TiO2. It provides outstanding performance to a broad spectrum of waterborne exterior and interior coating formulations. 

Coadis™ 144 A enables maximized gloss potential, while providing ideal viscosity, flow and wet adhesion across a wide range of sheens (from flat to high gloss).

Download

Highly efficient Rheology Modifier for improved Storage Stability and better Color Acceptance

Based on a proprietary technology, Rheotech™ 2800, a Coatex VOC-free and APEO-free associative thickener enables to avoid color float, increase tinting strength and limit viscosity drop. Rheotech™ 2800 allows paint formulators to improve storage stability and make cost saving in using two times less product compared to a standard thickener.


Download

Address the recurrent challenge (high gloss, good stability...) of Alkyd emulsion based formulations with COADIS™ BR 85

Coatex has designed Coadis™ BR 85 and Coapur™ XS 22 solutions to address the recurrent challenge (high gloss, good stability...) of Alkyd emulsion based formulations.

Coadis™ BR 85 and Coapur™ XS 22 are the best candidates to formulate high gloss topcoat with excellent stability.

Download

12

Downloads from Rheology Modifiers Solutions Center

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Webinars & Videos

Check out our webinars and videos about Rheology Modifiers Solutions

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