Borchi Gel L 75 N
Polyurethane based
Borchers
流变调整器/增稠 >> 联合 >> 疏水乙氧聚胺脂 (HEUR)
Rheology Modifier/ Thickener >> Associative >> Hydrophobically modified ethoxylate urethane (HEUR)
丙烯酸/丙烯酸盐树脂
Acrylic/Acrylate Resins
环氧树脂
Epoxy Resins
乙烯基
Vinyl
涂层 >> 水生
Coatings >> Waterborne
海洋 /防腐/保护
Marine /Anti-Corrosive / Protective
Borchi® Gel L 75 N 1
Thickener for emulsion paints and aqueous paint systems
Description
Borchi® Gel L 75 N is a polyurethane based, non-ionic liquid thickener. lt acts as a flow promoter in emulsion paints and stabilizes pigmented aqueous paints.
Properties
The particular molecular structure of Borchi® Gel L 75 N allows its adsorption at the surface of dispersed particles formed as a result of emulsion polymerization. lt is characterised by good efficiency. lt improves the rheological properties of emulsion paints, making the end-products easier to apply with a roller or a brush despite a considerable increase in viscosity. The product can be combined with other thickeners to achieve special effects. Since it improves the flow properties of emulsion paints, Borchi® Gel L 75 N has proved particularly useful for thickening acrylic gloss paints and anti-corrosion coatings. At the recommended addition rate, Borchi® Gel L 75 N does not adversely affect the water resistance of the films.
Applications
On the basis of our observations, Borchi® Gel L 75 N is more effective in finely dispersed than in coarsely dispersed emulsions. Suitable emulsion systems include pure acrylic, styrene-acrylic and styrene-butadiene. Borchi® Gel L75 N is also used in water-emulsifiable 2-component epoxy resin systems and other water-emulsifiable air- and oven-drying binders.
Mixing and addition rate
The recommended addition rate is 0.1 - 2% thickener, relative to the total formulation. Because of its low intrinsic viscosity, Borchi® Gel L 75 N can also be used for subsequent correction of viscosity without predilution.
Higher addition rates are generally necessary for the production of gloss paints. We recommend that Borchi® Gel L75 N is added directly to the mill base.
The thickening action of Borchi® Gel L 75 N may be reduced by polar, water-soluble film-forming agents, e.g. alcohols and glycols. Butyl diglycol acetate and Texanol®, on the other hand, bring about an increase in viscosity.
Since some formulations contain alcohol, it is advisable to test their effect on the viscosity of emulsion paints beforehand. In the case of gloss and silkfinish gloss paints, use of Borchi® Gen DFN or Borchi® Gen SN 95 as the dispersing agent is recommended to achieve good stability and prevent sedimentation and floating.
Non-ionic liquid thickener, free of impurities and insoluble matter. Acts as a flow promoter in emulsion paints and stabilizes pigmented aqueous paints. The particular molecular structure allows its adsorption at the surface of dispersed particles formed as a result of emulsion polymerization. Characterised by good efficiency. Improves the rheological properties of emulsion paints, making the end-products easier to apply with a roller or a brush despite a considerable increase in viscosity.
Can be combined with other thickeners to achieve special effects. Useful for thickening acrylic gloss paints and anti-corrosion coatings. At the recommended addition rate, does not adversely affect the water resistance of the films. More effective in finely dispersed than in coarsely dispersed emulsions. Suitable emulsion systems include pure acrylic, styrene-acrylic and styrene-butadiene. Used in water-emulsifiable 2-component epoxy resin systems and other water-emulsifiable air- and oven-drying binders.
Recommended usage level: 0.1 - 2% thickener, relative to the total formulation. Because of its low intrinsic viscosity, can also be used for subsequent correction of viscosity without redilution.
Higher addition rates are generally necessary for the production of gloss paints. Added directly to the mill base.
The thickening action may be reduced by polar, water-soluble film-forming agents, e.g. alcohols and glycols. Butyl diglycol acetate, on the other hand, bring about an increase in viscosity.
In the case of gloss and silkfinish gloss paints, use of a dispersing agent is recommended to achieve good stability and prevent sedimentation and floating.