Typical solids dispersed using the SLIM include fumed silica, CMC, guar gum, carbon black, carrageenan, xanthan gum, talc, alginates, pectin, titanium dioxide, calcium carbonate, starch, clays, alumina, carbomers
, sugar, salts, dye powders and other additives or fillers.
Typical solids dispersed using the SLIM include fumed silica, CMC, carbon black, graphite, talc, alginates, pectin, titanium dioxide, calcium carbonate, starch, clays, alumina, carbomers
, salts, dye powders and other additives or fillers.
are synthetic polymers with high viscosity and good ocular surface retention time, but they tend to sting and blur vision.
are not effective thickeners/stabilizers and the formula may experience stability issues if they are incorporated.
Ytron[R] instantaneously disperses the most difficult to disperse powders, such as carbomers
, gums, stabilizers and polymers at concentrations up to 20% by weight in a single pass.
As a class, carbomers
have been approved as GRAS or "generally recognized as safe" for many years and have been used in a wide variety of nutritional products.
By improving the performance properties of traditional carbomers
, the next-generation carbomer
meets the demands of an ever-changing personal care landscape.
Powders like fumed silica, CMC, guar gum, carbon black, carrageenan, xanthan gum, talc, pectin, flours, clays, carbomers
and other rheology modifiers can now be mixed into liquids quickly and economically, requiring no filtering step after the mixing operation.
Acryloyl taurate thickeners have improved resistance to salt but, according to Shiseido scientists, these polymers have a sticky feel which can be ameliorated by copolymerizing acrylamidomethylpropane sulfonate with hydroxyethyl methacrylate and an appropriate crosslinker, (10) Carbomers
are crosslinked polyacrylic add prepared by precipitation polymerization.
A major challenge in introducing carbomers
into water is to avoid clumping.
13) Polymeric thickeners based on acryloyldimethytaurine and its salts were introduced into the market in the 1990s (14) (Aristoflex AVC from Clariant) and they were found to offer better thickening efficiencies than conventional carbomers
in acid and salt-containing compositions.
Generating a near-perfect vacuum allows concentrations up to 20% by weight to be produced in a single pass, even with difficult products such as hydrocolloids, cellulose gums and carbomers