AGOCEL® AC 1155

Identification & Functionality

Chemical Family

Guar & Derivatives,

Gums & Hydrocolloids,

Polygalactomannan Ethers

CASE Ingredients Functions

Rheology Modifier,

Viscosity Modifier

Technologies

CASE Ingredients

Product Families

CASE Ingredients — Additives

Rheology Modifiers & Stabilizers

Features & Benefits

Labeling Claims

Environmentally Friendly

CASE Ingredients Features

Cost Effective,

Excellent Stability,

High Viscosity,

Highly Thixotropic

Key Attributes

• AGOCEL® AC 1155 is optimized in terms of important criteria such as processing, yield, storability and adhesion on critical grounds. AGOCEL® AC 1155 is best suited in water-based paints and in synthetic resin plasters.
• Within the total activity spectrum of AGOCEL® AC 1155, the following properties stand out in particular:
  • Easy incorporation in aqueous systems due to controllable hydration
  • Outstanding performance when combined with AGOCEL® AC 1115, AGOCEL® AC 1030 or AGOCEL® AC 1005
  • Very high viscosity
  • Distinct pseudoplasticity (thixotropy)
  • Good suspending and protective colloid effect
  • Excellent stability, even at high electrolyte concentrations
  • Good environmental behavior
  • Excellent cost/performance ratio

Applications & Uses

Markets

Building & Construction,

Paints & Coatings

Applications

Paints & Coatings — Building & Construction

Decorative Paints

Building & Construction — Building Materials

Plasters & Renders

Adhesive & Sealant Type

Tile Adhesive

Coating Type

Powder Coating,

Waterborne Coating

Use Level

0.15 - 0.4% (Water-based paints for indoor and outdoor applications), 0.2 - 0.6% (Dispersion adhesives), 0.2 - 0.6% (Synthetic resin plasters), 0.3 - 0.4% (Full-tone paints), 0.3 - 0.6% (Powder paints)

Application Technique

• The development of new paints and plasters facilitating an easy processing, high productivity and yield requires the use of tailor-made hydrocolloids.
• A special surface treatment of AGOCEL® AC 1155 facilitates an easy, homogeneous introduction of the powder into prepared, neutral or acid reacting aqueous phases when producing paints and plasters. The moment of hydration and as a consequence the beginning of the viscosity development can be controlled if need be through a change in the pH value.
• Should the swelling be retarded over a longer period of time due to the selected production technology, we recommend adjusting a slightly acid pH range (pH 4.0 – 5.0). Furthermore, we recommend adjusting the pH value at about 9.0 in case a quick swelling is required after the powdery components have been dispersed. A further change in the pH value within a wide range after swelling has no further influence on the hydration properties.
• If AGOCEL® AC 1155 is added to aqueous phases with an alkaline reaction, an immediate swelling starts together with the risk of a lump formation and a more complicated homogenization. We recommend using powerful stirrers at high speed or a premix with powdery pigments or fillers in case the working method cannot be changed.
• The multifunctional properties of AGOCEL® AC 1155 facilitate the reduction of recipe components and cost in many cases.
• The optimal application concentration of AGOCEL® AC 1155 varies depending on the application field and the selected product recipe.

Application Fields

AGOCEL® AC 1155 is applied for controlling the viscosity and rheology when producing:

• Indoor paints
• House front paints
• Full-tone paints
• Powder paints
• Synthetic resin plasters
• Dispersion tile adhesives

Recommendation for Use

• We recommend carrying out recipe specific pre-trials according to the application amounts.
• AGOCEL® AC 1155 does not contain any preservatives.
• We highly recommend adding sufficient amounts of preservatives to aqueous ready to use products.

Properties

Physical Form

Powder

Typical Properties

	Value	Units	Test Method / Conditions
pH Value (2%, 20°C)	5.2 - 6.8	—	—
Viscosity*	19000 - 28000	—	—

Solubility

• Colloidally soluble in cold or warm water with retardant swelling.
• Changes in the pH value influence the swelling speed; pH values < 7.0 retard the hydration, pH values > 7.0 accelerate it.

Stability

• After hydration AGOCEL® AC 1155 is stable within a wide pH range  and has a stable viscosity.
• Boron ions lead to a reversible gel formation at pH-values > 7.0.

Note

* Measured in a 2% aqueous solution at a pH value of 8.5, 20°C and 2 hours hydration time with Brookfield RVT, 20 rpm.

Storage & Handling

Shelf Life

6 months

Storage Conditions

• Store in cool and dry conditions in closed original containers.
• We recommend not exceeding a storage time of six months.
• Higher storage temperatures lead to an irreversible drop in viscosity.