Cyclosiloxanes

SiSiB is a worldwide leading manufacturer of organosilanes for over 30 years.

Cyclosiloxane is the most important intermediate for silicone materials. It is composed of repeating units of silicon (Si) and oxygen (O) atoms, which are individually combined to form a ring. It is produced by acid hydrolysis of silanes (e.g. dimethyldichlorosilane, diphenydichlorosilane) and purification by distillation.

SiSiB, a reliable silicone factory, is offering a wide range of cyclosiloxanes, include SiSiB® PC9240 Hexamethylcyclotrisiloxane (D3), SiSiB® PC9100 (Octamethylcyclotetrasiloxane, D4), SiSiB® PC9105 (Decamethylcyclopentasiloxane, D5) SiSiB® PC9106 (Dodecamethylcyclohexasiloxanee, D6), SiSiB® PC9150 (Tetramethylcyclotetrasiloxane, D4H), SiSiB® PC9110 (Tetramethyltetravinylcyclotetrasiloxane, ViD4), SiSiB® PC9180 (Octaphenylcyclotetrasiloxane, PhD4), SiSiB® PC9718 (3,3,3-Trifluoropropyl methyl cyclosiloxane, D3F) and SiSiB® PC9181 (Phenyl methyl cyclosiloxane).

D3, D4, D5 and D6 are usually used as monomers in the production of different ranges of silicone materials and play an important role in a wide range of applications.

D5 and D6 are a non-alcoholic, colorless and odorless transparent silicone liquid, used as a carrying and wetting agent for personal care products. It can be used as a body spray or as a substitute for petroleum-based solvents.

D5 and D6 are the main cyclomethicones in cosmetics and silicone personal care products because of their excellent skin and hair care properties. The cyclomethicone ingredients are used in cosmetics that require the siloxane carrier liquid to eventually evaporate completely. In this way, they are useful for products that need to be applied to the skin, such as deodorants and antiperspirants, but do not remain to the skin. They also can be found in sunscreens, shampoos, conditioners, moisturizers, lotions, etc.

D4H, ViD4, PhD4 and D3F are used for the production of reactive silioxane polymers and improve the performance (e.g. phenyl side groups provide oxidative stability; trifluoropropyl side groups provide high resistance to solvents).