Ircogel® 903

Product Type Calcium Sulfonate Rheology Control Additive

Predispersed in Diisononyl Phthalate (DINP)

Performance Ircogel 903 controls sag in PVC plastisol coatings and sealants by creating a more shear-thinning rheological behavior. This maintains flow and ease of application. The product is supplied as a gel diluted in DINP and can be simply stirred into the formulation. The gel structure is more thermally stable than that of other rheological additives, promoting sag control at all temperatures, even during the gellation process. Ircogel 903 provides the following benefits: • Permits post-add viscosity adjustments • Improves strike-through resistance • Maintains yield value during cure cycle, thus decreasing

product defects • Increases sag resistance • Reduces processing time • Improves pumpability of sealants • Minimizes viscosity drift upon shelf storage

Typical Applications Ircogel 903 is useful in a wide range of applications, including: • Dip coatings • Cloth coatings • Underbody sealants • Screen printing inks • Coil coatings Based on: • PVC Plastisols • Organosols • Polysulfides • Polymercaptans

Incorporation Ircogel 903 may be added either at the compounding or post-addition stage of manufacturing, using normal stirrers. However, Ircogel 903 can be incorporated during the grind stage of manufacturing to ensure batch uniformity.

The information contained herein is believed to be reliable, but no representations, guarantees or warranties of any kind are made as to its accuracy, suitability for particular applications or the results to be obtained. The information is based on laboratory work with small-scale equipment and does not necessarily indicate end product performance. Because of the variations in methods, conditions and equipment used commercially in processing these materials, no warranties or guarantees are made as to the suitability of the products for the applications disclosed. Full-scale testing and end product performance are the responsibility of the user. Lubrizol Advanced Materials, Inc. shall not be liable for and the customer assumes all risk and liability of any use or handling of any material beyond Lubrizol Advanced Materials, Inc.'s direct control. The SELLER MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Nothing contained herein is to be considered as permission, recommendation, nor as an inducement to practice any patented invention without permission of the patent owner. © 2007 The Lubrizol Corporation

Lubrizol Advanced Materials, Inc. 9911 Brecksville Road Cleveland, OH 44141-3247 800-380-5397 www.lubrizolcoatings.com

June 4, 2007

Ircogel® 903 Page 2

Addition Levels The recommended addition level of Ircogel 903 is 0.5-2%,

based on total formulation weight. Appearance Light Brown Pourable Gel Chemical Type Calcium Sulfonate Complex Density (g/cc) @ 25°C (77°F) 1.04-1.10 Density (lb/gal) @ 25°C (77°F) 8.66-9.33 Flash Point °C (°F) 120-160(248-320) Viscosity* (cP) 40,000-100,000 Non-Volatiles % wt (% vol) 100(100) Carrier 20-30% wt Diisononyl

Phthalate and mineral oil, adjusted to a consistent viscosity range specification

*Measured on a Brookfield RVF Viscometer, #5 spindle, 4 rpm @25°C (77°F) (ASTM D 2196).

Typical Properties

Packaging and Storage Ircogel 903 is packaged in 200-liter (55-gallon) drums and

20-liter (5-gallon) pails. Material should be stored in original, unopened container. Shelf life: 2 years. After this, the product should be retested prior to use.