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Rheomer 33T




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Rheomer 33T
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Rheomer 33T
CAS No. 1204525

Attention: FDA restricts this product solely for FDA regulated applications in the United States (which include cosmetics ingredients).  Regretfully, this means that we cannot export Rheomer 33T.  If you place it in your cart, all international shipping options will disappear!

Rheomer 33T is a unique thickener with good suspension and clarity properties for products containing low-to-medium concentrations of active surfactants. It’s an excellent thickener for both conventional surfactants, such as sulfates, and hard-to-thicken or challenging surfactants, such as Miracare Soft 313 or foaming proteins. It has excellent electrolyte and cationic polymer tolerance, and can be used to create cleansing products with large oil phases. 

Rheomer 33T is a hydrophobically modified alkali-swellable emulsion (HASE) polymer supplied as a very acidic liquid that must have the pH increased to allow the molecules to change from a compact sphere to a coil. The addition of salt reduces the energy needed for this process. HASE polymers show synergistic effects with cationic polymers such as Honeyquat or Guar™Cat.

When compared to other thickeners, Rheomer 33T increases flash foam and increases initial foam volume while offering a rich, creamy skin feel. When combined with salt and as low as 0.5% cationic polymers, viscosity and transparency are boosted. When combined with 0.5% sodium chloride, viscosity increases dramatically, and when combined with 1% sodium chloride, clarity remains above 95%.

Rheomer 33T is designed for thickening rinse-off products, not creams and lotions.

Key Benefits

  • Elegant skin feel with increased flash foam and foam volume with a rich, creamy lather that rinses clean after cleansing
  • Improved clarity in all surfactant systems at pH 6.3 or higher
  • Increased resistance to electrolytes 
  • Excellent suspender of particles and exfoliants, such as jojoba beads or aluminum oxide dermabrasion crystals
  • Excellent thickener for both conventional and hard-to-thicken surfactant systems 
  • Suitable for cold process rinse-off formulations
  • Suitable for rinse-off formulas with high oil content

Applications

  • Cleansing products with a high percentage of oils
  • Cleansing products using conventional surfactant systems (those that contain sulfates)
  • Cleansing products using novel or harder-to-thicken surfactant systems (those without sulfates)
  • Cleansing products with low to medium active surfactant systems (6% to 13% active)
  • Cleansing products with exfoliants in suspension


Formulating Guidelines

Although Rheomer 33T can be added at any time in the formulating process (according to the manufacturer), after addition, the pH must be altered to 6.5 by a slow addition of  a 15% - 20% sodium hydroxide solution or another alkaline ingredient like triethanolamine.  Our experience with Rheomer 33T indicates it is best added to the water and mixed first, whenever possible. 

We recommend the following process:

  1. Weigh the distilled, deionized, or reverse osmosis water into a container.
  2. Add 4% to 11% Rheomer 33T (1% to 3.3% active) under moderate stirring.
  3. Add 3% to 11% (active) anionic or negatively charged surfactant (this would equal approximately 10% to 35% foaming silk, oat, or apple surfactant).
  4. Add up to 0.5% cationic polymer such as GuarCat™ or Honeyquat.
  5. Add up to 1% to 3% (active) amphoteric surfactant, like cocamidopropyl betaine. Our SurfPro™ CAPB is 30% active, so you’d use 3% to 10% in this product.
  6. Add non-ionic surfactant, like decyl glucoside.
  7. Add in this order: oils, humectants, pearlizer, pre-mixed fragrance and solubilizer, preservative, dye, and salt.
  8. Adjust the pH at the end of the process.
  9. For a clear product, ensure the pH is 6.3 or higher.
  10. Add any exfoliants, like crystals or beads, at the end of the process.

Additional Notes:

To create a clear surfactant system, the pH must be 6.3 or higher and the active amphoteric surfactant must total no more than 3% by weight. In conventional surfactant systems using sodium laureth sulfate (SLeS) and cocamidopropyl betaine (CAPB), the addition of up to 1% salt created thicker, clearer systems. If the system contains cationic polymers, such as Honeyquat and GuarCat™, adding 0.9% to 1.5% salt can increase clarity.

Optimal thickening and suspending properties are found at pH 3 to 6, but these systems are not necessarily clear or transparent. To suspend beads or particles, create a formula with no more than 13% active surfactants (that is active surfactant, not the surfactants as supplied, which contain water).

Emollient body washes with a high oil load will not be clear, but will make a luxurious creamy formula if the pH is adjusted to just under pH 6.0.

Usage Rate: 4% to 11% (1.10% to 3.025% active)
Appearance: Milky liquid
Solubility: Water soluble.  Also soluble in propanediol and glycerin. Insoluble in oils, esters and silicones.
pH as supplied: 2.1 to 2.8 (very acidic)
Shelf Life: 12 months if stored in a cool, dark place.
Country of Origin: USA

INCI: Polyacrylate-33

California Prop 65 Statement:  The following statement is made in order to comply with the California Safe Drinking Water and Toxic Enforcement Act of 1986. This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Please refer to Section 15 of the SDS for the most current information.

Here you will find Safety Data Sheets (SDS) and Technical Data Sheets. The files are in PDF format. To access a file, click on the relevant button or the file name. For your convenience, it will open up in a new browser window.

Please note: You must have Acrobat Reader to view the files listed here. If necessary, the Acrobat Reader link will directed you to a page where it can be downloaded.

Technical Data

 
Rheomer 33T Technical Specifications
Rheomer 33T Brochure
Rheomer 33T Formulations (manufacturer brochure)

Safety Data Sheet (SDS)

Rheomer 33T SDS

 


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