decal-grades

1100 Series - Associative Thickeners

The DeCAL 1100 Series of associative thickeners are used where improved flow is desirable, for example in alkaline water-borne decorative coatings.

Products

DeCAL 1100 - Associative Thickener and Rheological Control Agent

DeCAL 1100 is an acrylic copolymer emulsion in water. This high molecular weight hydrophobic polymer provides a rheological control effect through extensive swelling and association in alkaline conditions.

Applications

info to follow

Benefits

  • Improves sag resistance and anti-settling when used in paint formulations.
  • Gives much less spattering in paints applied by roller.

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DeCAL 1102

DeCAL 1102 is an acrylic copolymer emulsion in water. This medium molecular weight hydrophobic polymer provides a rheological control effect through extensive swelling and association in alkaline conditions. In matt and semi-gloss paint this product improves flow and levelling performance, sag resistance and anti-settling. It also gives much less spattering in paints applied by roller.

Applications

DeCAL 1102 is an ideal rheological control additive for water-borne coatings. Due to its associative thickening action its efficiency will be determined largely by interactions with other formulation components. DeCAL 1102 offers excellent compatibility in pigmented systems, reducing flocculation due to its associative nature and providing excellent colour development. Since DeCAL 1102 is a synthetically derived product it is also less susceptible to microbiological attack.

Rheological control additives should preferably be added at the final stage of coating manufacturing, not in the pigment grinding stage as unrecoverable damage to the thickening mechanism can occur at high shear stress. DeCAL 1102 is convenient to add as a post additive in liquid form thereby, offering flexibility in viscosity adjustment from batch to batch. It is recommended that DeCAL 1102 is easier to add by diluting it 1:1 or even 1:2 with water to avoid shocking the system.

DeCAL 1102 is effective in the pH range optimally 7.5 – 10.5. Should at any time the pH of the final system fall below 7.5 then additional alkali, ammonium or other base is necessary to reactivate the thickening mechanism. Use of volatile alkali (e.g. ammonia) as neutralising agent improves the water resistance property of the dry film. The amount of DeCAL 1102 required for optimum performance should be determined in trials covering a concentration range.

Recommended addition level:  1.0 – 2.5% DeCAL 1102 based on total formulation.

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DeCAL 1103

DeCAL 1103 is an alkali soluble acrylic based associative thickener specifically designed for use in aqueous systems requiring a newtonian rheological behaviour.

DeCAL 1103 is highly effective in silk and flat emulsion paint, and provides an excellent balance between high and low shear viscosities as well as excellent compatibility with most organic and inorganic pigments.

Applications

DeCAL 1103 produces very high viscosity in aqueous systems at the high shear rates normally encountered under brush or roller application, thus imparting excellent film build whilst maintaining easy application properties. Furthermore, roller spatter is significantly reduced, levelling and at the same time sag resistance are improved.

DeCAL 1103 gives excellent results with acrylic emulsion binders and good results with most other commonly used emulsion resins as well.

DeCAL 1103 is compatible with most commonly used pigments, extenders and emulsion binders.

Most tinted emulsion paints thickened with DeCAL 1103 show none of the adverse effects which are often encountered with other associative thickeners, e.g. increase in viscosity with time and flocculation of the pigments.

DeCAL 1103 provides excellent colour development, excellent stability with either organic or inorganic pigments, good gloss and gloss retention and excellent resistance to bacteria and enzymes.

DeCAL 1103 is supplied as a ready to use product, its low viscosity renders it easy to handle and to disperse.

DeCAL 1103 develops its thickening properties in neutral or alkaline medium.

The final pH of the paint should be adjusted within the range 8 – 9. Lower pH’s can lead to flocculation and viscosity instability.

DeCAL 1103 can be added to an aqueous formulation in the form supplied or in a blend of 1 : 1 of DeCAL 1103  in water carefully neutralised to a pH of 8.5 before addition.

In either case the pH of the formulation should not fall below 8. If necessary, the medium to be thickened can be pre-neutralised to a pH of 9.0 before any addition of DeCAL 1103 is made.

Since DeCAL 1103 is an associative thickener, its efficiency will depend on the chemical structure and particle size of the binder, the nature of its protective colloid and the choice of coalescing agents. However, typical use levels for DeCAL 1103 fall in the range of 0.3% - 1.5% by weight of active ingredient on the total formulation weight.

Benefits

DeCAL 1103 provides to paints :

  • Superior film build.
  • No roller spatter.
  • Improved flow and levelling whilst retaining sag resistance.

DeCAL 1103 improves :

  • Gloss and Gloss retention.
  • Compatibility with pigment dispersions.
  • Resistance to bacteria attack
  • Thickening cost (ease and low level of use).

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DeCAL 1106

DeCAL 1106 is a high efficiency modified acrylic copolymer emulsion in water. This high molecular weight hydrophobic polymer provides a rheological control effect through extensive swelling and association in alkaline conditions. This product improves flow and leveling performance whilst retaining high thickening efficiency. The use of DeCAL 1106 also provides improved sag resistance and anti-settling and gives much less spattering in paints applied by roller.

Applications

High PVC emulsion paints, acrylic sealants/fillers, low cost wood treatments and spray applied systems

Benefits

  • High low shear viscosity and high structure pseudoplastic rheology
  • Anti-settlement
  • Easy handling and flexible addition
  • Colourant flocculation resistance
  • Microbiological attack resistance
  • Electrolyte tolerance

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DeCAL 1107

DeCAL 1107 is a high efficiency modified acrylic copolymer emulsion in water. This high molecular weight hydrophobic polymer provides a rheological control effect through extensive swelling and association in alkaline conditions. This product improves flow and leveling performance whilst retaining high thickening efficiency. The use of DeCAL 1107 also provides improved sag resistance and anti-settling and gives much less spattering in paints applied by roller.

Applications

High PVC emulsion paints, acrylic sealants/fillers, low cost wood treatments and spray applied systems.

Benefits

  • High low shear viscosity and high structure pseudoplastic rheology
  • Anti-settlement
  • Easy handling and flexible addition
  • Colourant flocculation resistance
  • Microbiological attack resistance
  • Electrolyte tolerance

Click here to enquire about this product or request a sample today