What is BENTONE GEL GTCC V? Where can BENTONE GEL GTCC V be used? What are the typical use levels?

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Questions & Answers

Contents What is BENTONE GEL GTCC V? What is Caprylic/Capric Triglyceride? What are the major application benefits? Where can BENTONE GEL GTCC V be used? How do I incorporate this product into my formulations? What are the typical use levels? How do the rheological properties of BENTONE GEL GTCC V differ from that of pure caprylic/capric triglyceride? Can you demonstrate the applications with some formulation examples? Is testing data available to help show the performance benefits provided by BENTONE GEL GTCC V? 1

Q: What is BENTONE GEL GTCC V? A: BENTONE GEL GTCC V is a dispersion of fully activated BENTONE 27 V, a nonanimal origin hectorite organoclay, in caprylic/capric triglyceride. This emollient trimester is recommended as an alternative for mineral oil and vegetable oils. The BENTONE GEL GTCC V delivers a combination of benefits in a single, easy to use product. The caprylic/capric triglyceride provides a fine, soft emollience with lubricity, forming a non-occlusive film on the skin surface and acting as a good solvent for chemical sunscreen actives. The organoclay offers rheological modifications Figure 1. BENTONE GEL for the oil phase and emulsions, which leads GTCC V to enhanced product stability, as well as increased viscosity, suspending capability, rich texture, silky skin feel, good spreading properties and thixotropic flow characteristics. The INCI name of BENTONE GEL GTCC V is Caprylic/Capric Triglyceride, Stearalkonium Hectorite, Propylene Carbonate. Typical Properties Property Specification Appearance Light Tan Paste Viscosity (MM cps) 1.5-3.2 Ash Content (%) 7.6-8.2 Table 1. Typical Properties of BENTONE GEL GTCC V 2

Q: What is Caprylic/Capric Triglyceride? Caprylic/capric triglyceride is a natural coconut and palm kernel oil derived mixture of glycerin triester with caprylic and capric acids, which can be used as an alternative to mineral and vegetable oils. It is an excellent moisturising emollient oil with good skin care properties, giving a pleasant non-slippery after feel on the skin. It is used as a less oliy alternative to castor oil in lipsticks and in colour cosmetics. In figure 2 we can see that it has a low Emollient Skin Spreading Factor (ESSF=5.9) indicating good spreading properties. Caprylic/capric triglyceride is a penetration enhancing solvent, which leaves no visible greasy coating on the skin, and is insoluble in water, soluble in warm alcohols and miscible with fats & oils. It has a very high polarity, which can be seen by the low interfacial tension, shown in figure 3, and it can be used as a solvent for lipophilic active ingredients and UV filters. Caprylic/capric triglyceride is odourless with excellent oxidative stability. Figure 2. Emollient skin spreading factors Figure 3. Interfacial tensions 3

Q: What are the major application benefits? A: The application benefits include: Formulation stability including elevated temperature stability Thickening and suspending Thixotropic rheological flow Enhances dispersion and is a good solvent for chemical sunscreen actives Contributes to rich texture and improved formulation aesthetics Gives a softer skin feel Offers ease of spreading and even coverage Provides emollience 4

Q: Where can BENTONE GEL GTCC V be used? A: BENTONE GEL GTCC V is suitable for various personal care applications. Some formulation examples are listed in this application guide. This product is very easy to incorporate into the oil phase of emulsions, or all oil systems. Applications may include: Make-up Skin care products Antiperspirant/Deodorants Sunscreens Hair products Creams/lotions Ointments/oil gels/sticks Baby oils 5

Q: How do I incorporate the product into my formulations? A: BENTONE GEL GTCC V may be added to the oil phase of a formulation at any convenient stage during the manufacturing cycle. This is a very high viscosity, shearthinning product. To ensure good homogeneous mixing is achieved, care should be taken to overcome the large viscosity differential existing between the BENTONE GEL and the other lower viscosity components. The use of medium to high shear mixing equipment is recommended. Thorough mixing of the BENTONE GEL in the oil phase should be ensured before continuing to the next processing step, such as emulsification. Batch Processing Single Phase Systems Always add the BENTONE GEL, under shear, to a portion of the organic component or solvent with which it is most compatible. Mix until homogeneous before adding the other ingredients. Multi-Phase Systems (e.g. emulsions) Treat as with the single phase but always ensure the BENTONE GEL thoroughly mixed in before continuing to the emulsification stage. additive is Continuous Processing The BENTONE GEL should be added to the oil phase at any convenient point, which meets the above guidelines for batch processing. In multimanifold systems, a flowable pre-mix of the BENTONE GEL with a compatible oil or solvent should be made in a side vessel. Where only lower shear mixing equipment is available, stir the BENTONE GEL and slowly add the most compatible component gradually, always ensuring the mixture remains homogeneous at each stage. 6

Q: What are the typical use levels? A: Product use levels depend on the amount of thickening and stabilisation desired in the final formulations. Suspension will be provided by 2.5-10.0% additions. In emulsions, thickening will occur in the oil phase only and emulsion viscosities will be influenced by 3-5% additions. Higher levels of BENTONE GEL will have a greater viscosity influence. Thermostable viscosity in single phase systems may be achieved by 10-25% additions. Q: How do the rheological properties of BENTONE GEL GTCC V differ from that of pure caprylic/capric triglyceride? A: The flow curves and oscillation curve (frequency sweep) of BENTONE GEL GTCC V and caprylic/capric triglyceride are compared below. BENTONE GEL GTCC V is a high viscosity gel, with thixotropic flow behaviour, while caprylic/capric triglyceride is a low viscosity liquid with almost a constant viscosity when the shear rate is varied. In addition, BENTONE GEL GTCC V is a gel with a strong structure and excellent stability. Figure 4. Addition of BENTONE 27 V produces a high viscosity gel, with thixotropic flow behaviour Figure 5. BENTONE 27 V provides excellent stability in caprylic/capric triglyceride 7

Q: Can you demonstrate the applications with some formulation examples? A: Some representative formulations with BENTONE GEL GTCC V are listed here to demonstrate the various potential applications. Formula 1: Sugar Body Scrub Ingredient Supplier % w/w PHASE A BENTONE GEL GTCC V (Caprylic/Capric Triglyceride and Stearalkonium Hectorite and Propylene Carbonate) ELEMENTIS Specialties 20.0 Crovol M70 (PEG-60 Corn Glycerides) Croda 10.0 Lexol PG-86d (Propylene Glycol Dicaprylate/Dicaprate) Inolex 9.1 Lipovol RB (Oryza Sativa (Rice) Bran Oil) Lipo 5.0 Lipex 106 (Shorea Stenoptera Butter) Karlshamns AB 3.0 Lipex 203 (Mangifera Indica (Mango) Seed Oil Karlshamns AB 2.0 Lipovol ALM (Prunus Amygdalus Dulcis (Sweet Almond) Oil) Lipo 2.0 Tocopheryl Acetate 0.5 Paratexin P (Propylparaben) S. Black Group 0.2 BHT Merck 0.2 PHASE B THIXCIN R (Trihydroxystearin) ELEMENTIS Specialties 5.0 PHASE C Glycerin 13.0 Butylene Glycol 10.0 PHASE D Sugar 20.0 Total 100.0 Procedure 1. Heat Phase A together to 75-80 C. 2. Add Phase B to Phase A and mix for 20 minutes using a silverson homogeniser. 3. Heat Phase C together to 75-80 C. 4. Add Phase C to Phase A+B and mix. 5. Add Phase D to Phase A+B+C and cool to 35 C. Physical Properties Appearance ph Viscosity - Brookfield DV-II+, Spindle 4, 12 rpm (cps) Cloudy Off-White Semi-Solid N/A N/A 8

Formula 2: Water in Oil Cream Ingredient Supplier % w/w PHASE A BENTONE GEL GTCC V (Caprylic/Capric Triglyceride and Stearalkonium Hectorite and Propylene Carbonate) ELEMENTIS Specialties 9.0 Mineral Oil 16.0 Prisorine 3700 (Polyglyceryl-3 Diisostearate) Uniqema 3.0 Paraffin Wax Ross 3.0 PHASE B Deionised Water 69.0 Total 100.0 Procedure 1. Heat the Phase A and Phase B separately to 65-70 C. 2. Add Phase B to Phase A with stirring. 3. Stir to cool. Physical Properties Appearance ph White Balm N/A Viscosity - Brookfield DV-II+, Spindle 7, 12 rpm 60000-70000 9

Formula 3: Hair Dressing Cream Ingredient Supplier % w/w PHASE A BENTONE GEL GTCC V (Caprylic/Capric Triglyceride and Stearalkonium Hectorite and Propylene Carbonate) ELEMENTIS Specialties 34.0 THIXCIN R (Trihydroxystearin) ELEMENTIS Specialties 0.5 Abil OSW5 (Cyclopentasiloxane and Dimethiconol) Evonik Degussa 8.0 Dow Corning 245 Fluid (Cyclopentasiloxane) Dow Corning 6.0 Abil EM 90 (Cetyl PEG/PPG-10/1 Dimethicone) Evonik Degussa 2.5 Drakeol 34 (Mineral Oil) Penreco 2.0 Abil Soft AF 100 (Methoxy PEG/PPG-7/3 Aminopropyl Dimethicone) Evonik Degussa 0.5 PHASE B Deionised Water 75.5 Sodium Chloride 0.5 PHASE C Germaben II E (Propylene Glycol and Diazolidinyl Urea and Methylparaben and Propylparaben) ISP 0.5 Total 100.0 Procedure 1. Combine Phase A and heat to 60-70 C. 2. In a separate container premix Phase B and heat to 60-70 C. 3. Slowly add Phase B to Phase A with shear for 10 minutes. 4. Homogenise at 65 C for 10 minutes. 5. Cool down to 45 C and add Phase C. Physical Properties Appearance Glossy White Cream ph 5.0-5.5 Viscosity - Brookfield DV-II+Pro, Spindle 7, 2.5 rpm (cps) 196800 10

Formula 4: Protective Lipsalve Balm Ingredient Supplier % w/w PHASE A BENTONE GEL GTCC V (Caprylic/Capric Triglyceride and Stearalkonium Hectorite and Propylene Carbonate) ELEMENTIS Specialties 8.0 Crodamol GTCC (Caprylic/Capric Triglyceride) Croda 66.6 Supermol S (Pentaerythrityl Stearate/Caprate/Caprylate Adipate) Croda 9.0 Syncrowax HRC (Tribehenin) Croda 6.0 Pure White Beeswax (Cera Alba) A&E Connock 5.0 Crodacol C90 (Cetyl Alcohol) Croda 5.0 Propylparaben Clariant 0.4 Total 100.0 Procedure 1. Heat all components to 70-75 C. 2. Mix with a silverson homogeniser until uniform. 3. Stir to cool with a propeller stirrer. 4. At 50-55 C fill containers. Physical Properties Appearance ph Viscosity Cloudy Semi-Solid N/A N/A 11

Formula 5: Water in Oil Lipgloss Ingredient Supplier % w/w PHASE A BENTONE GEL GTCC V (Caprylic/Capric Triglyceride and Stearalkonium Hectorite and Propylene Carbonate) ELEMENTIS Specialties 20.0 Castor Oil (Ricinus Communis) John L Seatons & Co Ltd 32.5 Sisterna A10E-C (Sucrose Terastearate Triacetate) Sisterna 5.0 COD 8006 (Ricinus Communis and CI 77491 and BHT) Sun Chemical 3.0 Colorona Glitter Bordeaux (Mica and CI 77491) Merck 2.5 COD 8008 (Ricinus Communis and CI 77891 and BHT) Sun Chemical 1.0 Paratexin P (Propylparaben) S. Black Group 0.2 PHASE B Deionised Water 30.6 Glycerine 5.0 Paratexin M (Methylparaben) S. Black Group 0.2 Total 100.0 Procedure 1. Heat Phase A together to 80 C. 2. Heat together Phase B to 75 C. 3. Add Phase B to Phase A using high shear mixing (i.e. a silverson homogeniser). 4. Fill into containers and allow to cool. Physical Properties Appearance ph Viscosity Red Semi-Solid N/A N/A 12

Q: Is testing data available to help show the performance benefits provided by BENTONE GEL GTCC V? A: Experimental data has been obtained by testing the different formulations, with and without BENTONE GEL GTCC V. Apparent performance benefits are demonstrated in the following examples. BENTONE GEL GTCC V in the Sugar Body Scrub (Formula 1) The caprylic/capric triglyceride provides an emollient effect, with the organoclay helping to provide a base for the product, improve the application properties and stabilise the product. In figure 6, we can see that the sample with BENTONE GEL GTCC V demonstrated thixotropy. Figure 6. Flowcurve of the sugar body scrub BENTONE GEL GTCC V in a Water in Oil Cream (Formula 2) This water in oil cream uses caprylic/capric triglyceride as an emollient. The organoclay helps stabilise the emulsion, allows for even application and provides a smooth, soft finish. Figure 7 shows that the viscosity of the water in oil cream with BENTONE GEL GTCC V is not as greatly affected by the change in temperature as the sample without organoclay. Figure 7. Temperature curves for the creams with and without organoclay 13

BENTONE GEL GTCC V in a Hair Dressing Cream (Formula 3) The hair dressing cream has been designed to provide a combination of styling and conditioning properties. The BENTONE GEL GTCC V improves the appearance, creating a rich glossy white cream, with good hold and flexible control, improving the overall ease of application. The dressing cream with BENTONE GEL GTCC V shows a much higher viscosity at low shear and a greater thixotropic nature than the control without organoclay. The increased thixotropy of the formulation with BENTONE GEL GTCC V is an indication of improved application properties and ease of spreading. Both formulations were subjected to stability testing for 3 months. The sample with BENTONE GEL GTCC V was stable at room temperature, 45 C and after 3 Figure 8. Flow curves for hair creams freeze/thaw cycles, whereas the sample without organoclay shows instability at 45 C and after 3 freeze/thaw cycles. In figure 9 we see the results of the freeze/thaw testing. Both samples were also subjected to sensory evaluation by 8 panelists. The results plotted in figure10 show improvements in wet feel, wet combing, hold and gloss when organoclay was incorporated into the formulation. no Organoclay with BENTONE GEL GTCC V Figure 9. Hair dressing creams after 3 Freeze/Thaw cycles Figure 10. Hair dressing cream sensory evaluation 14

BENTONE GEL GTCC V in a Protective Lipsalve Balm (Formula 4) BENTONE GEL GTCC V in this lipsalve balm provides easy application and stability, while also increasing the viscosity and giving a creamy feel. Figure 11 shows the high viscous and thixotropic nature of the lipsalve with BENTONE GEL GTCC V. In figure 12 we see that the viscosity takes time to rebuild once the application shear has been removed. This means that the product is thixotropic, giving it more desirable feel characteristics. In figure 13 the lipsalve appears to be very stable over the entire angular frequency range, which represents good short and long term stability. Figure 11. Flow curve for lipsalve balm Figure 12. Time dependent recovery curve Figure 13. Frequency sweep 15

BENTONE GEL GTCC V in a Water in Oil Lipgloss (Formula 5) Here BENTONE GEL GTCC V offers the emollient effect of caprylic/capric triglyceride along with the added creamier and softer application properties, improved stability and better pigment dispersion achieved with hectorite organoclay. Figure 14 shows the difference in viscosity and thixotropy achieved when BENTONE GEL GTCC V is added. The lipgloss with BENTONE GEL GTCC V is shown in figure 15 to be stable throughout the angular frequency range, whereas the sample without organoclay indicates an unstable product, due to phase changes which are seen to appear in this Figure 14. Flow curves for lipglosses diagram. The sample with no organoclay in figure 16 undergoes phase changes at about 20 C, indicating instability above this temperature. The sample with BENTONE GEL GTCC V appears to be stable from 10-80 C. Figure 15. Frequency sweeps for lipglosses Figure 17 shows sample without organoclay. There is dramatic phase separation. The water and oil phases are not able to disperse properly with each other. The sample with organoclay shows a perfectly formed water in oil lipgloss, with good pigment dispersion and a smooth finish. no Organoclay with BENTONE GEL GTCC V Figure 16. Temperature oscillation curves Figure 17. Lipglosses after manufacture 16

Before using any of our products please consult our Safety Data Sheets. The information in this publication is, to the best of our knowledge, true and accurate, but since the conditions of use are beyond our control, no warranty is given or to be implied in respect of such information. In every case, caution must be exercised to avoid violation or infringement of statutory obligations and any rights belonging to a third party. We are, at all time, willing to study customers specific outlets involving our products in order to enable their most effective use. Copyright 2008, Elementis Specialties, Inc. All rights reserved. Copying and/or downloading of this document or information therein for republication is not allowed unless prior written agreement is obtained from Elementis Specialties, Inc. Registered trademark of Elementis Specialties, Inc. For more details please contact: AMERICAS Elementis Specialties P.O. Box 700 Hightstown New Jersey 08520 USA Tel: +1.609.443 2500 Fax: +1.609.443 2446 EUROPE Elementis Specialties De Kleetlaan 12a 1831 Diegem Belgium Tel: +32.2.790.7600