Name: Attapulgite Clay Thickener AT-100
Brand: Coatingsink
SKU: attapulgite-clay-thickener-at100
Availability: InStock

Question 1

What is the correct dispersion procedure for AT-100 in waterborne coatings?

Accepted Answer

Disperse AT-100 into water or the aqueous phase under high-speed mixing (1000–1500 rpm) for 10–15 minutes before adding binders or pigments. Pre-hydration improves gel network strength by up to 30% compared to post-addition.

Question 2

How does attapulgite differ from bentonite as a rheology modifier in waterborne systems?

Accepted Answer

Attapulgite builds viscosity via a needle-like (acicular) particle network rather than the platelet electrostatic mechanism of bentonite. This makes AT-100 more electrolyte-tolerant and effective over a wider pH range (6–11), ideal for high-salt or amine-containing waterborne formulations.

Question 3

What dosage of AT-100 is needed to achieve effective sag resistance in a 50 µm wet-film architectural coating?

Accepted Answer

Typically 0.3–0.8% by weight on total formulation is sufficient for 50–80 µm wet-film sag resistance. Adjust upward to 1.2% for thicker coatings or systems with high surfactant content that may compete with the attapulgite gel network.

Appearance	Off-white to cream powder
BET Surface Area	130–180 m²/g
Moisture Content	≤12%
Particle Size (d50)	5–15 µm
pH (5% aqueous dispersion)	8.0–9.5

Attapulgite Clay Thickener AT-100

Specifications

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