' ';
Home | Products | Borchi® Gel 0621

Borchi® Gel 0621

Rheology Modifier for Anti-Sagging and Spray Application

Borchi® Gel 0621 is a non-ionic, polyurethane-based rheology modifier for anti-sagging and spray application. It is a low shear range associative HEUR thickener for water-based coating systems. This product contains no emulsifiers and is tin-, VOC- and APEO-free. It is 30 % active in water.  
Benefits of Rheology Modifiers for Anti-Sagging and Spray Application
Borchi® Gel 0621 develops viscosity stability and pseudoplastic flow behavior. Depending on the type of binder used and other components of the system, it produces a pronounced shear-thinning flow behavior by means of a non-covalent network with binder particles and pigments. As a rheology modifier for anti-sagging and spray application, this solution enables the application of thick layers on vertical surfaces. Borchi® Gel 0621 effectively prevents sagging and does not yellow or cause chalking in cured film.  
Other Additives for Spray Paint Application
Other additives for spray paints include Borchi® Gel 0620 rheology modifier. Both are designed for water-based paints.  
Other HEUR Thickeners from Borchers
Low Shear Medium Shear High Shear  
Applications
Applications include industrial and decorative coatings that are applied via spray gun. Borchi® Gel 0621 is suitable for brush and roll application when used with a Newtonian thickener. It is effective in spray paints used on metal and concrete tile roofs when combined with Borchers® AF 1171 defoamer. This additive provides good compatibility in systems based on Acrylic, Polyesterpolyurethane, and Urethaneacrylate emulsions.

Physical Characteristics

Appearance Opalescent, high-viscous liquid
Non-volatile content 28 – 31 % ISO 3251
(2g, 3h, 105 °C)
pH 4 – 7
Density 1.01 – 1.05 g/cm3 DIN
53217 (23 °C)
Viscosity Max. 6000 mPa.s ISO
3219(A)-1994 (23 °C)
Solvent Water

Features

  • Develops viscosity stability and improves rheological
    properties mainly in the low shear range
  • Enables application of thick layers on vertical surfaces
  • Effectively prevents sagging
  • Does not yellow or cause chalking in the cured film
  • Free of hazardous air pollutants (HAPs)
  • APEO-free
  • Tin-free

Applications

  • Spray Coatings
    • Industrial
    • Architectural
    • Automotive
  • Brush and roll coatings when used with Newtonian thickener

Dosage

  • 0.2 – 3.0% on total formulation

The best incorporation method is to add it after the pigment/filler dispersion but prior to being let down. Under low-shear mixing conditions a pre-dilution in water or a mixture of water/propylene glycol may be necessary for complete incorporation. The exact dosage should be experimentally determined.

Storage

Protect from the effects of weathering and store at temperatures between 5 and 30 °C. Once opened, containers should be resealed immediately after each removal of the product.

Safety

Please refer to our safety data sheet for information relating to product safety.

add to sample order
Download Data Sheet
Availability : All, Americas, Asia, EMEA
Media : Water-based
Registration :

For chemical inventory status, please review section 15 of the current SDS.

Click here to access the SDS portal.

For additional regulatory information, please contact regulatory@milliken.com.

Rheology Modifier Products

View All Rheology Modifier Products »