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We use expertise in innovative chemical technologies to create, make and sell a diverse range of speciality chemical additives to help meet the changing needs of water usage globally, specialising in municipal and industrial water treatment.
Our extensive expertise in surfactant chemistry enables us to offer tailored solutions for paper manufacturing and recycling, textile production and wastewater treatment.
We recognise that water treatment processes involve challenging and changing environments and are committed to providing tailored solutions to support your requirements. With extensive experience in the water treatment market and a global presence, we are ideally positioned to help achieve optimum performance in your required application area.
With innovation at the heart of what we do, Croda is uniquely positioned through our expertise in surfactants to offer tailored solutions to customers operating in the water markets. Providing solutions such as;
- Primary and secondary emulsifiers: expertise to deliver innovative surfactants for use in the development and manufacture of water-soluble polymers (WSP).
- Polymeric stabilisers: tailored, specialised surfactants to improve emulsion stability and give smaller, more consistent particle size under high sheer and high temperature conditions.
- NPE free inverters: offering fast and complete inversion. Our range provides alternative chemistries to the traditionally used alkyl phenol ethoxylates to allow for high efficiency inversion and to overcome challenging conditions.
- Inverse emulsion polymerisation: Croda provides primary emulsifiers (Span™ and Tween™), polymeric stabilisers (Hypermer™) and inverters (Synperonic™, Brij™ and Natsurf™) to polyacrylamide manufacturers utilising inverse emulsion polymerisation.
- Paper manufacturing: Croda’s Hypermer surfactants help paper producers to manufacture more thermally stable retention aids, whilst our Synperonic EO/PO block polymers, with FDA and BfR clearances, help to formulate and optimise defoamer packages.
- Hydraulic fracturing: Croda provides special inverters for polyacrylamide friction reducers, suitable for processing high total dissolved solids (TDS) in water.
Additives for defoaming and inversion – Synperonic range
NPE free inverters
Croda also offers a range of NPE free inverters (breakers) for inverse emulsion polymers. Alkyl phenol ethoxylates have traditionally been used as inverters but Croda offers a range of alternative chemistries. Croda’s NPE free inverters offer fast and complete inversion in combination with Hypermer’s and high efficiency.
Synperonic defoamers
Selecting the most effective defoamer for a specific application can be difficult as they are used in such a wide variety of applications, there isn’t one defoamer that is suitable to all. The products used in industry applications can be split into three categories: silicone based, oil based and EO/PO copolymer defoamers. Although only EO/PO copolymer defoamers are mentioned in this section, Croda manufactures high quality speciality components of defoamer formulations under the Crodamide™, Span, Tween, Crodafos™ and Brij trade names. Please contact your sales representative for more information. Croda’s Synperonic EO/PO copolymer defoamers are designed to offer long term performance and stability in high sheer stress conditions. The Synperonic defoamer range cover a broad optimum temperature range.