Description
Igepal® CA-897 is an excellent primary nonionic surfactant, recommended especially for the emulsion polymerization of acrylic, vinyl acrylic, styrene-butadiene, and styrene-acrylic polymers. Such polymers find application in latex paints, adhesives, paper coatings, and textile applications. This product is one of a series of Rhodia ethoxylated alkylphenol nonionic surfactants with different HLBs. Since differences in HLB affect emulsification and stabilization properties, the Igepal series allows the user to select the surfactant that will provide effective particle size control, low levels of coagulum, latex stability, and trouble-free commercial production.
The Solvay Igepal® range of alkylphenol ethoxylates is designed to improve the stability performance of a wide range of polymer systems at the usage level of 0.5-3.0% (based on total monomers). The low ethoxylated Igepal products are also suitable for being used as wetting agents. The Igepal products are only suitable for solvent-borne system if their HLB value below 10.0.
The binders emulsified with these Igepal nonionics can be formulated into a broad range of applications, paints, and coatings, adhesives, paper, textile, etc. They can be added during the polymerization as well as the post additives for improvement of mechanical, freeze-thaw, and chemical stability. When added during the polymerization, the stability of pre-monomer emulsion can be improved as well.
Applications for Igepal® CA-897
Igepal® nonionics are very effective and efficient. In most applications, these nonionics deliver significant performance improvement at a low usage level, such as:
- Stability: mechanical, chemical, freeze-thaw, and pre-monomer emulsion
- Wetting: pigment, substrates, etc
- Color acceptance
- Less water-sensitive versus the anionic
- Less foaming tendency versus the anionic
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IGEPAL® CA-897: Ethoxylated Octylphenol, Branched (40)
