Consumer C are additives for home care & personal care products

Transcription

1 Consumer C are additives for home care & personal care products southern clay products, inc. A rockwood specialties, inc. company

2 SOUTHERN CLAY PRODUCTS, INC. Additives for Home Care & Personal Care Products

3 C o n t e n t s Southern Clay Products, Inc: An Introduction 2 Rheology within Consumer Care Products 3 SCP Layered Silicate and Nonionic Polymer Basics 5 Aqueous Phase Additive Product Technology 7 Nonaqueous Phase Additive Product Technology 11 How to Use Our Products 12 Application Guide 14 Quality Statement 16

4 S o u t h e r n C l a y P r o d u c t s, I n c : A n I n t r o d u c t i o n WiDNeS MOOSBuRg AuSTiN LOuiSViLLe gonzales SiNgAPORe executive OFFiCeS/DiViSiONAL HeADQuARTeRS SALeS & OPeRATiONS SALeS At Southern Clay Products, Inc., our goal is to deliver solutions to our customer we create and deliver solutions. In the late 1940 s, Southern Clay Products was created with a vision innovate and expand. We began in Gonzales, Texas as miners and suppliers of unprocessed ore and simple milled products from local reserves. We have since steadily expanded our scope, acquiring and processing minerals from a wide range of global sites from Texas to China to Spain to Morocco to Turkey. In 2000, Southern Clay Products became part of Rockwood Specialties, Inc. Headquartered in Princeton, New Jersey, Rockwood Specialties is a leading manufacturer of specialty chemicals and minerals throughout the world. Rockwood Specialties substantial commercial and financial support has allowed Southern Clay Products to strengthen our position as an internal leader in our fields. As 2005 drew to a close, Southern Clay Products acquired the rheological additives business of Sud-Chemie, including operating sites and laboratories in Louisville, Kentucky and Moosburg, Germany. These locations joined previously existing sites in Gonzales, Texas and Widnes, England to form a global physical presence for Southern Clay Products. Through technical and commercial partnerships, joint ventures and acquisitions, Southern Clay Products has grown into a world leader in specialty additives. Specialty additives manufactured by Southern Clay Products are used by customers to formulate unique products in an extensive number of markets. Today, scientists from many disciplines and diverse backgrounds work in our modern and well-equipped laboratories to develop more advanced products and technologies based on a variety of chemistries. Our scientists work with world leaders in universities and industry, including our suppliers and customer partners, to ensure that Southern Clay Products continues to be the preferred supplier of high value, multi-functional additives. From computer modeling of ore deposits and complex chemical reactions to sophisticated rheological characterizations of additive enhanced formulations, Southern Clay Products differentiates itself through state-of-the-art technology. We are committed to meeting the needs of our customers both now and in the future through world class commercial development, product design, manufacturing, technical selling and customer partnerships. 2

5 R h e o l o g y w i t h i n C o n s u m e r C a r e P r o d u c t s Today s consumer is increasingly demanding of functional and cost effective home care and personal care products. In almost every case, rheology plays a critical role in the look, feel, application performance, stability, and cost effectiveness of the end product. Southern Clay Products can help you to design the optimal rheological solution with our range of additives and years of technical experience. What is rheology? Rheology is the science of the deformation and flow of materials. The most common means of characterizing the rheology of consumer care products is by way of viscosity under a given set of conditions. Viscosity is a measure of the resistance to flow when a material is subjected to a shear force, and defined by the following relationship: Viscosity = Shear Stress/ Rate of Applied Shear The more resistant a material is to flow, the greater the viscosity. Materials where shear stress is directly proportional to shear rate are defined as Newtonian. Newtonian behavior is typical of very free-flowing & relative simple consumer care products such as nail polish remover. FIG- URE 1 illustrates an example of Newtonian flow behavior. More typical of formulated consumer care products is that viscosity varies quite dramatically with shear rate. Materials that demonstrate a decrease in viscosity as a function of shear rate are described as pseudoplastic, or shear thinning. Pseudoplasticity allows for the easy application of products that otherwise resist flow in the resting state. This allows for a product to have a desirable rich look within the container, resist spillage and uncontrolled flow during application, but also provide easy distribution over surfaces during application. A classic example of this behavior is toothpaste. This is also an important feature for cleaning products that require good spray-ability, but otherwise cling on vertical and inverted surfaces. FIGURE 1 also depicts pseudoplastic flow. Figure Viscosity (mpas-secs) Pseudoplastic Flow 1 Newtonian Flow Shear Rate (1/sec) 3

6 Viscosity (mpas-secs) Thixotropy is a more complicated case of shear thinning flow where viscosity is a function of the time that a force has been applied to the material. The recovery of the original resting state viscosity is not instantaneous when the force is removed. This slow recover allows for flow and leveling. Examples of this are nail polish and lipstick applications where smooth and glossy surfaces are much desired. FIGURE 2 depicts thixotropic flow behavior. Figure Thixotropic Flow Shear Rate (1/sec) Plastic flow requires that a minimum shear stress be applied to a material before flow will commence. Below this threshold, the product remains in an elastic state akin to a soft rubber ball. This point where flow begins is also known as the Yield Value. Yield Value is an important rheological attribute within a broad range of consumer care products. The suspension of pigments, fillers, and beads requires Yield Value. Yield Value can also play a key role in thermal stability of emulsions by helping to prevent flocculation and phase separation. FIGURE 3 is a simplified depiction of Yield Value, and illustrates the range of shear rates critical to consumer care products. Yield Value can also be strain amplitude dependant. This is to say that even if significant energy is applied to the system, flow will not begin until the physical displacement or disturbance achieves a critical minimum. This is a relatively unusual rheological attribute that is characteristic of layered silicate networks. This attribute becomes advantageous in consumer care products where stability is required for endproducts exposed to vibration during shipping. Although the vibration can be of relatively high energy, it s typically insufficient in amplitude to induce fluidity that might result in settling of pigments or the flocculation of an emulsion. Figure Settling Transport Packaged Look & Feel Application Hand, Brush, Spray 10 4 Viscosity (mpas-secs) Thixotropic Flow 1 Yield Point Shear Rate (1/sec) 4

7 S C P L a y e r e d S i l i c a t e a n d N o n i o n i c P o l y m e r B a s i c s Layered silicates are a broad and varied family of materials that are better known as clays. The range of products offered by Southern Clay Products falls within the smectite family of swelling clays. These materials Laponite synthetic layered silicates and Gelwhite, Mineral Colloid, Bentolite and Tixogel bentonite natural layered silicates - are characterized as negatively charged thin & plate-like particles with an equal proportion of positively charged counter-ions. In the non-dispersed or dry state (powder), the plates are stacked akin to a deck of cards that are combined to form macroscopic aggregates. When fully dispersed, the primary particles are separated to generate a colloidal dispersion. The individual particles can re-associate in solution to form a network which results in rheology. This network of associated particles provides Yield Value and thixotropic flow behavior in formulated consumer care products. FIGURE 4 illustrates the idealistic dry state, dispersed sol state and network gel formation state. Figure 4 Dry Powder Macroscopic Aggregates Dispersed Sol State Free-Flowing Dispersion Dispersed Gel State Edge to Edge Interaction It should be noted that quite often the best rheological solutions involve combinations of layered silicates and polymeric rheological additives. In general, it is the anionically charged polymers that provide synergy with the anionically charged particles. Within the range of polymeric rheology additives, Xanthan Gum, Carboxymethyl Cellulose and high molecular weight acrylates provide such synergy. These combinations often lead to the most cost effective system, in addition to providing broader formulating latitude. The ability to disperse our layered silicates in various solvents is a direct function of the counter ion. Sodium counter-ion dominated layered silicates disperse in water with relative ease, with the extreme example being Laponite additives. Sodium and calcium counter-ion derived natural silicates require shear and heat to drive plate separation. If the sodium and/or calcium is replaced with an organic derived cation (such a quaternary ammonium chloride surfactant), the layered silicate can be made to disperse in non-aqueous systems. The range of Tixogel products are specifically designed for dispersion in common anhydrous oils used in personal care products. (See page 12 for details about the dispersion of our various products.) Although we at Southern Clay Products are basic in layered silicate technology, we also offer a unique line of polymeric rheological additives. The Pure Thix line of products is a range of nonionic polymers derived from a backbone of polyethylene oxide decorated with hydrophobes. The polyethylene oxide backbone provides excellent water solubility, and it is the hydrophobes that are critical for rheology development. The hydrophobes associate with themselves, pigment surfaces, and emulsion droplets to form a network. It is this network which leads to rheology. Unlike the layered silicate network that typically provides shortening like rheology, the Pure Thix polymer network provides more honey-like viscous flow. This flow can be shear thinning or nearly Newtonian, but does not provide any measurable yield value. Pure Thix polymers can be used in conjunction with clay or other polymer rheological additives to dial-in the target flow behavior of a finished product. FIGURE 5 is an idealistic illustration of a Pure Thix polymer network. Figure 5 Hydrophobe Junction Water Soluble Backbone - Hydrophobic End Groups - Pigment or Emulsion Particles 5

8 A q u e o u s P h a s e A d d i t i v e P r o d u c t T e c h n o l o g y

9 A q u e o u s P h a s e A d d i t i v e P r o d u c t T e c h n o l o g y Laponite additives are entirely synthetic layered silicates that closely resemble the natural clay mineral hectorite both in structure and composition. Hectorite is also a smectite clay. The synthesis process involves combining salts of sodium, magnesium and lithium with sodium silicates at carefully controlled rates and temperature. This produces an amorphous precipitate, which is then partially crystallized by a high temperature treatment. The resulting product is filtered, washed, dried and milled to produce a fine white powder. When placed in water, the Laponite powder rapidly delaminates into a clear colloidal dispersion. Laponite additives have excellent synergy with a range of anionic polymeric co-thickeners (CMC, HASE, Carbomer and polyacrylates). Laponite additives provide a very high unit yield value and a very high degree of pseudoplasticity. Laponite additives are ideal for emulsion suspension stability, and for cleaning products that require good spray-ability and cling without sagging or dripping. Laponite XLG Laponite XL21 Laponite XLS Laponite RD Laponite RDS maximal rheology in personal care applications optimized ph stability in personal care applications optimal dispersion and open time in personal care applications maximal rheology in home care applications optimal dispersion in hard water and maximal open time in home care applications The Gelwhite product line is produced from bentonite that is mined from some of the whitest deposits in the world. The mined bentonite is subjected to a proprietary wet refining process that removes all natural contamination to produce an extremely pure refined smectite. Through this refining process, the Gelwhite additives attain a brightness and whiteness level far in excess of most competitive products. Since Gelwhite additives do not add undesirable tint to formulations, the use of white pigments may be reduced in some formulations, and colored pigments are truer in color in other formulations. Gelwhite products also behave in a synergistic manner with anionic polymeric co-thickeners, and to high ph conditions found in many home care product applications. Gelwhite L Gelwhite H Gelwhite GP low viscosity for maximal loading in muds and masks high viscosity/work-horse in personal care products highest viscosity The Mineral Colloid product line is manufactured from selectively mined bentonite deposits that have been identified for their unique rheology properties. The mined bentonite is subjected to a proprietary wet refining process to produce an extremely pure refined smectite. The Mineral Colloid products have very high water viscosities and demonstrate good synergy with a range of polymer and gum based co-thickeners. Mineral Colloid additives are effective in formulations that require high viscosity in unusually high or low ph systems, or systems containing appreciable electrolyte. Mineral Colloid BP Mineral Colloid MO work-horse with excellent response to harsh conditions (extreme ph and high electrolyte or builder levels) maximal yield stress in a range of home care product applications 7

10 A q u e o u s P h a s e A d d i t i v e P r o d u c t T e c h n o l o g y The Bentolite product line is produced from two of the world s purest bentonite deposits. These natural bentonites are scrutinized during the exploration and mining processes to ensure that only the highest purity and lowest iron proportions of the deposits are brought to the plant for further processing. Once at the plant, the ore is subjected to processing to lower the iron content of the final product even further. Bentolite products are ideal for applications that are cost sensitive. The Bentolite products are frequently used for their combination of rheology contribution and adsorption behavior in applications such as muds & masks. Bentolite H Bentolite L most cost effective clay for high fill muds and masks. lighter colored and cost effective The Pure Thix product line is a range of synthetically polymerized hydrophically modified polyether polymers. The unique structure of these polymers, extremely hydrophilic backbone decorated with a minimum of critical hydrophobes and a relatively low overall molecular weight, results in a high degree of water solubility to allow for crystal clear and color free end-products. The chemistry is such that a very broad range of hydrophobe options are possible, to include mixed systems. This allows for the polymer to be exactly matched to a specific end-use system. Unlike most anionic polymeric thickeners, the rheology afforded by the Pure Thix products is not as sensitive to ph or electrolyte loading (rheology is not hydrodynamic volume driven). As with the layered silicate product lines, the Pure Thix products work well in conjunction with other co-thickeners to allow for efficient and tailored rheology. Pure Thix 1450 Pure Thix 1442 Pure Thix HH Newtonian flow with very high salt tolerance maximal rheology in personal care and surfactant containing personal cleansers easy to use 20% aqueous solution of Pure Thix 1442 with butylene glycol

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12 N o n a q u e o u s P h a s e A d d i t i v e P r o d u c t T e c h n o l o g y

13 N o n a q u e o u s P h a s e A d d i t i v e P r o d u c t T e c h n o l o g y The Tixogel product line is produced from carefully selected nature sodium bentonite. Only a small proportion of all the bentonite in the world is suitable for the production of Tixogel additives, and Southern Clay Products searches the globe to find the most suitable bentonite. Tixogel products are organically modified clays that are produced by reacting organic cations, such as a quaternary ammonium chloride with refined bentonite. The reaction changes the nature of the clay from hydrophilic to hydrophobic. The quaternary ammonium surfactants are derived from vegetable based sources so that these clays can be used in all personal care product applications. Tixogel products are suitable for providing various rheology characteristics to solvent-based or oil based formulations. Our Rheocin product is hydrogenated castor oil. This material provides a very high degree of thixotropy in non-polar oils such as silicone and isododecane. When used in high concentration, it can act as a stiffening agent in underarm stick antiperspirant/deodorants or in lipstick applications. In addition to the rheological benefits, Rheocin additive is a film former that will aid in water repellency. Unlike clay, Rheocin additive does not provide high temperature stability or any appreciable yield stress at typical use levels. Rheocin hydrogenated castor oil unique & easy to use thixotropy agent Tixogel VPV Tixogel VZV Tixogel LG-M specifically designed for non-polar nonaqueous systems. specifically designed for polar nonaqueous systems. optimized for rheology in butyl acetate Tixogel gel products are easy to use pre-dispersions of Tixogel organoclay within a range of common personal care and cosmetic oils and solvents. The resultant gels are optimally tuned in terms of the activator used to maximize efficiency, and the conditions required to ensure optimal dispersion of the clay. By use of these gels, the formulator can be assured of a high degree of reproducibility. In addition to the clay based products, Southern Clay Products also offers gels derived from our Rheocin product and from special grades of polyethylene. Tixogel clay based gels Tixogel Rheocin base gels Tixogel polyethylene based gels 11

14 H o w t o U s e O u r P r o d u c t s Although our range of products can be highly efficient, it is important to understand that the proper incorporation is critical to success in use. The information below is designed to give the formulator the basic information necessary to get started and ensure efficient use of our materials. Aqueous Based Products First Component Heat Dispersive Shear Dispersion Time (min) Chemical Activation Comments Laponite XLG, RD Yes Room Temp Low 20 No Optimized for rheology, good synergy with anionic polymeric rheology additives XL21 Yes Room Temp Low 20 No Best stability for ph less than 6.5 XLS, RDS Yes Room Temp Low 20 No Provide maximum open time, and allows for minimum free-water Gelwhite, Mineral Additives Yes Helpful High 30 No Acid, Base and Electrolyte will have Colloid and Bentolite a positive impact of efficiency Pure Thix 1442 No Helpful Low Variable No Best to add after surfactants 1450 No Helpful Low Variable No High electrolyte tolerance and Newtonian flow HH No No Low Variable No Easy to use solution Nonaqueous Products Tixogel Organoclay First Component Heat Dispersive Shear Dispersion Time (min) Chemical Activation VPV Yes Helpful High 30 Propylene Carbonate VZV Yes Helpful High 30 Propylene Carbonate LG-M Yes Helpful High 30 Propylene Carbonate Comments Nonpolar oils Polar oils Specifically designed for butyl acetate Tixogel Gel Clay based gels No Room Temp Medium 10 No Can be added at any point in formulation Rheocin based gels No Room Temp Medium 10 No Do not heat over 70 C Polyethylene gels No Helpful Medium 10 No Easy incorporation of difficult to disperse polyethylene wax Rheocin Additives No 50 C max Moderate 20 No Overheating will result in loss of rheology 12

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16 A p p l i c a t i o n G u i d e Recommended In conjunction with anionic co-thickeners Natural Clays Organoclay Gels Trihydroxystearin Laponite Gelwhite Mineral Colloid Bentonlite Pure Thix Tixogel Tixogel Rheocin Home Care Applications XLG XLS XL21 RD RDS L H BP MO H L HH VPV VZV LG-M LAN 1563 IDD 1538 VSP 1438 FTN 1564 OMS 1562 CCT 6030 IIN 1578 MIO 1584 PEC 1414 IDP 1388 RCM 1357 Rheocin Liquid Automatic Dish Detergent Oven Cleaner Hard Surface Cleaner with Bleach Liquid Abrasive Cleaner Liquid Abrasive Cleaner with Bleach Liquid Cream Cleaner Liquid Cream Cleaner with Bleach Caustic Cleaners and Degreasers Dripless Window Cleaner Toilet Bowl Cleaner Abrasive Hand Cleanser Liquid Laundry Detergent Liquid Dish Detergent Automotive Tire Dressing Water-based Automotive Polish Solvent-based Automotive Polish Chrome Cleaner Windshield De-icer Personal Care XLG XLS XL21 RD RDS L H BP MO H L HH VPV VZV LG-M LAN 1563 IDD 1538 VSP 1438 FTN 1564 OMS 1562 CCT 6030 IIN 1578 MIO 1584 PEC 1414 IDP 1388 RCM 1357 Rheocin Lotions Creams Masks Scrubs/Cleansers Hand Cleansers Shampoos Body Wash Conditioners Mascara Foundations Liquid Makeup Eye Pencils Lipstick Lip Gloss Nail Lacquer Sunscreens Hair Styling Gels AP Stick AP Aerosol AP Roll-on Deodorant Soft Solid 14 15

17 Q u a l i t y S t a t e m e n t At Southern Clay Products, Inc., our commitment to quality reaches far beyond superior products. We realize the importance of excellence in all we do and know first hand that our responsibility as a world leader in our markets must first start with operations and customer support. At the core of this responsibility is our implementation of Six Sigma, a widely recognized business improvement process which questions every number, process, and step taken to create our final product. Six Sigma is not based upon opinion or popular belief, rather it uses data and facts, math and science, and relentlessly seeks out any quality issues that may arise in order to create effective change which leads to greater customer success. Six Sigma was implemented at Southern Clay Products in It is widely recognized as one the world s most successful business improvement processes. At Southern Clay Products, we are committed to excellence in all areas, and the implementation of Six Sigma will bring us closer to our goal of leading our industries in creating and delivering the optimal solutions for our customers. The information within this reference guide is intended to provide general nonspecific information about certain products produced and/or sold by Southern Clay Products, Inc. Southern Clay Products, Inc. does not, expressly or through implication, represent or warrant that the information within this reference guide is applicable for your intended use. Your reliance on the information within this reference guide is solely at your own risk and liability. Please contact authorized representatives of Southern Clay Products, Inc. for specific information concerning your proposed use of products provided and/or sold by Southern Clay Products, Inc. Trademark indicia set forth herein applies with respect to United States trademark rights. In other countries different trademark rights may apply. Copyright 2007 Southern Clay Products, Inc. All Rights Reserved. 16

18 NAFTA Southern Clay Products, Inc Church Street Gonzales, TX Telephone: Direct Line: Fax: W. Hill Street Louisville, KY Telephone: Direct Line: Fax: Executive Offices Bee Cave Rd. Suite 103 Austin, TX EUROPE Rockwood Additives Limited Moorfield Road Widnes, Cheshire UK WA8 3AA Telephone: 44 (0) Fax: 44 (0) Rockwood Clay Additives GmbH Stadtwaldstr. 44, Moosburg, Germany Telephone: 49 (0) Fax: 49 (0) ASIA Rockwood Specialties (Singapore) Pte. Limited 171 Chin Swee Road #10-08 San Centre Singapore Telephone: Fax: