Rheovis CRX Acrylic polymer Ciba Rheology Modifier/ Thickener >> Associative >> Acrylic/Acrylic copolymer (ASE/ HMASE) Inks >> Water-based Coatings >> Waterborne INKS Architectural / Decorative Automotive OEM Automotive refinishing General Industrial /Maintenance Wood & Furniture Coatings Transportation >> Aerospace Industry RHEOVIS CRX are derivatives of a family of highly effective rheological control additives for water-borne inks and water-borne coating systems. RHEOVIS CRX belong to a family of products which are based on similar acrylic polymer technology with side groups designed to provide an associate thickening mechanism. RHEOVIS CRX are ideal rheological control agents for a wide range of water-borne inks and water-borne coatings. They are most effective over a pH range 7.5-10. RHEOVIS CRX is the most efficient thickening additive leading to a more thixotropic system. It is often used in coating systems designed for spray applications. The practical use in conventional coatings might be limited to applications where flow and levelling are less critical. The three grades RHEOVIS CR2, RHEOVIS CR and RHEOVIS CRX are chemically compatible with each other allowing formulation of blends in any ratio. In a given formulation the products may be combined as to reach the optimum overall performance. Since RHEOVIS CR2, RHEOVIS CR and RHEOVIS CRX are synthetically derived product they are less susceptible to microbiological attack than derivatives of cellulose. Consequently the paint formulator can substantially reduce the level of biocide leading to a broader area of application. Incorporation of RHEOVIS CR2, RHEOVIS CR and RHEOVIS CRX Rheological control additives with associated thickening mechanism should preferably be added at the final stage of manufacturing of the ink or coating – as opposed to addition to the pigment grinding stage - since destabilisation can occur at high shear stress. The liquid form of RHEOVIS CR2, RHEOVIS CR or RHEOVIS CRX makes this post- addition comfortable. As a positive side effect, the post-addition offers the flexibility in viscosity adjustment from batch to batch. After addition, the pH is adjusted with alkali, ammonia or other bases to achieve the full and stable viscosity. Use of volatile agents improves the water resistance properties of the dry film. The pH of the system during manufacturing of the coating should always be kept higher than 7.5 to prevent precipitation and consequent destabilisation of the formulation. In certain cases it may be advisable to dilute and pre-gel with alkali before addition. Recommended dilution factor is 1 part of additive and 5 parts of water. Highly effective acrylic polymer. Used as a rheological control additive for water-borne inks and coating systems. Offers high efficiency over a pH range 7.5-10. Provides very good efficiency. Suits for coating systems designed for spray applications. <br> Use level: 1-3.5% on total formulation.