Sun Care

Water-Resistant PEG-Free Sun Lotion SPF 30

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Released By Lubrizol Life Science

Water-Resistant PEG-Free Sun Lotion SPF 30
Ingredients
%

Phase A

  • Water (Aqua)
  • 61.91
  • Disodium EDTA
  • 0.10
  • Pemulen EZ-4U Polymeric Emulsifier (Lubrizol) (Acrylates/C10-30 Alkyl Acrylate Crosspolymer)
  • 0.20
  • Glycerin
  • 6.00

Phase B

  • Parsol 340 (DSM) (Octocrylene)
  • 10.00
  • Parsol MCX (DSM) (Ethylhexyl methoxycinnamate)
  • 7.50
  • Parsol EHS (DSM Nutritional Prod.) (Ethylhexyl salicylate)
  • 4.50
  • Parsol 1789 (DSM Nutritional Products) (Butyl methoxydibenzoylmethane)
  • 3.00
  • C12-15 alkyl benzoate
  • 6.00

Phase C

  • Sodium hydroxide (18 wt%)
  • 0.29
  • Phenoxyethanol
  • 0.50

Procedure

PART A: Using overhead mixer and marine blade, add Disodium EDTA to Water and mix until fully dissolved. Slowly add PemulenTM EZ-4U polymeric emulsifier to Part A with mixing. Continue mixing until fully dispersed and hydrated.Add glycerin to Part A and mix until homogenous. In a separate vessel, combine Part B ingredients and mix until solution is clear. Add Part B to Part A and mix until homogenous. Homogenize batch for 1min @ 10,000rpm using Ultra-Turrax homogenizer model T25 (IKA). Return the batch to overhead mixing and add Part C ingredients one at a time ensuring good mixing between additions. Increase mixing speed as needed to ensure homogeneity.

Properties

Appearance—Yellowish lotion; pH—5.9 – 6.2; Viscosity (mPa•s) Brookfield RVT Viscometer spindle #4 @ 20 rpm, 25 °C @ 24 hours—3,800 – 5,000; SPF (determined by In Vitro testing using Labsphere UV-2000S UV Analyzer)— Static: 36 SPF (determined by In Vitro testing using Labsphere UV-2000S UV Analyzer— Very water resistant (after 80 minutes immersion): 34; Stability—passed 4 weeks @ 50°C, passed 5 cycles freeze/thaw, Ongoing RT and 45°C.

More Information

Lubrizol Advanced Materials, Inc. 800-379-5389, 216-447-5000 Website: www.lubrizol.com/personal-care

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