SiBrid®: Hydrocarbon Hybrids

SiBrid® Diethicone; INCI name: Polydiethylsiloxane

SiBrid® fluids are organic-modified siloxanes that cross the boundaries between organics and silicones. SiBrid® fluids are soluble in most organics and silicones.

Polydiethylsiloxanes (diethicones) are the first of a series of hybrid silicone polymers without methyl substitution. Analogous in structure to dimethicones, the flexible polymer structure of diethicones allows the manufacture of a wide range of fluid viscosities. The beneficial properties of diethicones include excellent spreading, gas permeability, water resistance, lubricity, and the ability to reduce tack. Diethicone’s tactile properties include a dry feel similar to that of dimethicone but with increased cushion. Diethicones have dramatically broad compatibility with organics compared to dimethicones, allowing formulation with common cosmetic raw materials  including many hydrocarbons, esters, waxes, and surfactants. Diethicones overcome the solubility limitations of dimethicones with many surfactants, emollient oils, and both natural and synthetic waxes.

Diethicones, in contrast to dimethicones, wet  pigments well. The greater organic character of  diethicones allows coated pigments and fillers to disperse more readily in organic vehicles allowing either higher pigment volume concentration at equivalent formulation viscosities or substantially  lower viscosities at equivalent pigment loadings.

Trisiloxanes contain a cluster of seven methyl groups which form one of the lowest energy flexible structures known. The structure has been compared to a hydrophobic cloud. By altering the length and polarity of the organic substituent trisiloxanes range from light dry feeling volatile liquids to emollient fluids and super-wetting surfactants (with polar substitution). Alkyltrisiloxanes with 6 to 12 carbons in the organic substituent are light, dry, emollient oils with good organic compatibility, particularly when compared to phenyl trimethicone. They are used to enhance slip and reduce tack in skin care and color cosmetics. Organic and inorganic pigments are readily wetted and dispersed in alkyl trisiloxanes, facilitating use in foundations, eyeshadows, blushes, and lip color.

SiBrid® Caprylyl Methicone TM-081; INCI Name: Caprylyl Methicone
SiBrid® TM-081 Caprylyl Methicone offers an exceptionally light, dry feel combined with excellent spreading qualities. SiBrid® TM-081 is an excellent vehicle for long wearing foundations and eyeshadows. It also performs well as an additive in bath and tanning oils to enhance spreadability and reduce tack in many oil-based formulations.

SiBrid® Lauryl Methicone TM-121; INCI Name: Lauryl Methicone
Lauryl Methicone is similar to TM-081 with reduced volatility and increased pigment wetting properties.

SiBrid® Stearyl Methicone TM-181; INCI Name: Stearyl Methicone
Stearyl Methicone is more lubricious than TM-081 but leaves a smooth weightless feeling on the skin. TM-181 can be used to reduce tack and lend a lighter feel to skin treatment products and liquid foundations.

SiBrid® Lauryl Phenylpropylmethicone PM-212; INCI Name: Dodecylmethylsiloxane-2-phenylpropylmethylsiloxane copolymer

SiBrid® PM-212 is a viscous, high refractive index C12 / phenylpropyl modified light amber silicone that gives high luster and shine to lip products. Films formed using SiBrid® PM-212 resist feathering and creeping, allowing the formulation of emollient lip glosses and lipsticks. SiBrid® PM-212 can also be used in skin and sun care products to improve skin adhesion and film forming capability.