Alcogum L-283 Latex National Starch and Chemical-Alco Chemical Rheology Modifiers / Thickeners >> Alkali-Swellable Acrylic polymers (ASE/ HASE) ADHESIVE ALCOGUM™ polymers are pre-activated high molecular weight rheology modifiers used to viscosify a wide range of adhesive compounds. ALCOGUM thickeners provide stable viscosity over a broad pH range and are resistant to biological degradation. ALCOGUM™ L-200 Series thickeners comprise an evolving family of products designed by Alco Chemical to meet rheology and water retention requirements for the paper and paperboard industries. These highly effective, high molecular weight polymeric thickeners allow formulators to increase the level of water retention and select the optimal low and high shear flow properties to optimize machine productivity and finished sheet quality. The ALCOGUM™ L-200 Series meets today’s demanding coating trends. These trends include: Higher coater speeds requiring improved high shear rheology to maximize machine efficiency. LWC requiring controlled coating immobilization and structuring properties. Increased coating grade differentiation calling for a broader range of performance properties from a rheology modifier. Changes in equipment and automated coating kitchens affecting requirements and use of viscosifiers. Increased use of film presses and metering size presses as LWC/ULWC coaters The ALCOGUM™ L-200 Series are available in several grades. Products may be selected with different levels and types of hydrophobic substitutions. Substituted polymers, referred to as associative thickeners, allow the formulator to select the combination of water retention, viscosity, and flow properties that maximize the operation’s productivity. ALCOGUM L-283 is a member of the ALCOGUM L-200 Series of thickeners. This product group utilizes a proprietary emulsification system which provides excellent mechanical shear and freeze-thaw stability to the emulsion. These emulsions have enhanced compatibility with typical coating raw materials which simplifies addition and mixing techniques. ALCOGUM L-283 is an associative alkali soluble viscosifier. It is supplied as a stable, ready-touse anionic latex emulsion. ALCOGUM L-283 was developed for use in lightweight coating formulations that require additional water retention and reduced blade pressure for improved coater runnability. This product allows the formulator to build more water retention into his formulation while maintaining lower Hercules high shear viscosity compared to typical synthetic and cellulosic thickeners. Improved coater efficiency and enhanced paper properties may be obtained using ALCOGUM L-283. Associative alkali soluble viscosifier. Stable, ready-to use anionic latex emulsion. Offers high Brookfield viscosity, low Hercules viscosity and medium water retention. Permits to build more water retention while maintaining lower Hercules high shear viscosity as compared to synthetic and cellulosic thickeners. Provides stable viscosity over a broad pH range and resistance to biological degradation.