STAR*POL 136 Starch Polymer

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Cecilia Gibson
7 years ago
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1 STAR*POL 136 is an easily dispersible, highly substituted, nonionic water soluble polymer designed to be used at lower solids levels in wall treatments, adhesives, tile mortar, tile grout, oil drilling mud as well as a number of other applications. STAR*POL 136 is a modified waxy corn based starch polymer. Pregelatinization allows the polymer to hydrate and build high viscosity in water at low temperatures. The STAR*POL 136 polymer is modified to give enhanced water holding capacity which allows this product to serve as an excellent fluid loss control agent. In addition, STAR*POL 136 is also crosslinked to provide resistance to shear breakdown. This polysaccharide is manufactured by novel technology which provides unique functional properties. These properties include: excellent cold water dispersibility, ph stability, storage stability, excellent freeze/thaw properties, ionic salt compatibility, surface activity and pseudo plastic flow characteristics. With these unique properties, STAR*POL 136 is a good candidate for the replacement of competitive water soluble polymers currently being used as thickeners, binders, rheology modifiers, water retention aids, protective colloids and other applications. Its lower cost relative to cellulosic thickeners, natural gums and synthetic water soluble polymers may provide a significant economic advantage. Key Attrlbutes STAR*POL 136 can function in formulations as a: Thickener Water Retention Adhesive Film Former Binder Suspending Agent Rheology Modifier Protective Colloid Typical Analysis Color/Form Off-White Powder Ionic Character Nonionic Moisture Content, % 5.0 Bulk Density, lbs./cubic foot 40 Particle Size retained on U.S. #60 mesh, % 0.5

2 Routine Tests Specifications Test Numbers Moisture 10% max Screen Analysis (15 Min. Ro-Tap): On U.S. #60 0.5% max Brookfield 75 F: After 10 minutes cps After 60 minutes cps Water Soluble 20-50% FDA Status Complies with FDA Regulation 21CFR as Industrial Starch Modified. Recommended Storage Conditions Store at ambient temperature and humidities. Storage in a cool, dry area will increase shelf life. Shelf Life Twenty-four months Availability Available in 50 lb. multiwall paper bags. (Revised 2/1998)

3 Properties I. Appearance Aqueous solutions of STAR*POL 136 are white, with a translucent appearance. These solutions demonstrate excellent resistance to separation upon aging. II. Viscosity STAR*POL 136 can be used at a variety of solids ranges depending upon the viscosity desired. It is particularly well suited for use at lower solids concentrations. See Figure 1. STAR*POL 136 is also resistant to degradation under high sheer conditions. See Figure Figure 1 Effect of StaJel 136 Solids on Viscosity Brookfield Viscosity, cps % 4.00% 4.50% 5.00% 5.50% 6.00% 6.50% 7.00% 7.50% 8.00% 8.50% Starch Solids, % Figure 2 Effect of Shear Rate on Viscosity* % DS, Mild Agitation 5% DS, Vigorous Agitation Viscosity,* cps Shear Rate, 1/s STAR*POL 136 viscosity varies as a function of the solution temperature. Viscosity decreases with increasing temperatures and increases as the temperature is lowered. Solutions of STAR*POL 136 at ambient temperatures exhibit good viscosity stability over time.

4 The ph of the make-up water has little effect on the viscosity of STAR*POL 136 through the range of ph Make-up at a ph outside this range can result in a different initial viscosity. Highly acidic or alkaline conditions can also cause polymer degradation upon long-term storage. III. Film Properties Aqueous solutions of STAR*POL 136 dry to form hazy, continuous films which can be resolubilized with water. Water resistance can be increased by adding any one of a number of commercial insolubilizers or crosslinking agents. Applications STAR*POL 136 was designed for use in wall treatment compounds, adhesives, tile mortar, tile grout and oil drilling mud. Its combination of properties also make it suitable for a variety of other uses including pigmented paper coatings, textile finishing, protective colloids, ceramic binders, etc. Solutlon Preparatlon Unlike many water soluble polymers, STAR*POL 136 exhibits little tendency to agglomerate upon addition to water. Therefore, it is not necessary to employ special methods or equipment to keep individual polymer particles separated until hydration occurs. Any agglomerates which do form initially will typically break down with normal agitation. Preparation of a 5% solids aqueous solution of STAR*POL 136 requires mixing with good agitation for a period of about 30 minutes (at temperatures of F). The character and duration of the agitation required for complete solution is a function of the solids concentration and water temperature. A cold water make-up of a high solids solution will require increased agitation time. Due to the surface active nature of STAR*POL 136, make-up at high-solids concentrations or the use of excessive shear may necessitate the addition of an anti-foaming agent to the make-up water. Commercial products, such as those whose active ingredients are based on fatty acid-glycol materials (and mixtures thereof), have exhibited good foam control when evaluated in laboratory tests. Anti-foaming agents based on other chemistries have also proven satisfactory in specific end-use applications. Your Staley representative can make recommendations as to the available anti-foam agents which may be used in your application.

5 Solution Preservation Under normal conditions, aqueous solutions of STAR*POL 136 have good viscosity stability. Extended solution storage, however, may result in viscosity reduction due to microbial or enzymatic attack. As such, stored solutions should be protected by the addition of a preservative. For best results, the preservative should be added as soon as possible after the solution is prepared. Many commercial preservatives have proven effective in protecting STAR*POL 136 solutions in the lab. Your Staley representative can provide you with a list of these products. Because preservation requirements vary widely depending upon the end-use application, we suggest that you consult preservative manufacturers for specific product and dosage recommendations. Storage, Handling And Safety In dry form, STAR*POL 136 exhibits good storage stability under normal conditions. Moisture content may change depending upon the relative humidity of the surrounding environment, particularly after bags have been opened. Direct contact with water during storage should be avoided as caking will occur. A Material Safety Data Sheet is available for STAR*POL 136 and should be consulted before handling or us Regulatory Status STAR*POL 136 meets FDA requirements as specified in the Code of Federal Regulations, Title 21, under the following sections: Food Packaging Adhesives Paper and Board - aqueous and fatty foods Paper and Board - dry food Industrial Starch-Modified Contact your Staley representative for specific information relative to FDA compliance for other applications. Availability STAR*POL 136 is available in 50 lb. multiwall polylined paper bags for truckload shipments. For additional information, samples, or technical assistance in using STAR*POL 136, please contact:

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