![]() White appearance, stable emulsions with different % of silicone content.Achieving the right size as well as a distribution of this size as homogeneously as possible are necessary requirements to achieve optimum stability in the emulsion.ĭepending on the size of the particle, silicone emulsions are classified into two subfamilies, macro and micro-emulsions.Ĭharacteristics of silicone macro-emulsions: The outcome thus, in the normal phase emulsions, is to obtain small silicone oil spheres enveloped by an aqueous matrix. This is achieved with the selection of the most suitable emulsifier system for each insoluble fluid. It is necessary to avoid the natural tendency to separate between the insoluble fluid (silicone in this case) and the water. Silicon itself has two unions to organic groups that in many cases are methyl groups (CH3) that confer their semi-organic characteristics to the silicone chain.Īs we have said, one of the main difficulties in the world of emulsions is to achieve a product that is sufficiently stable over time. ![]() From a chemical point of view, silicone oil is a finite chain of silicon and oxygen atoms bonded to each other. Silicone emulsions typically contain a silicone component (usually a silicone oil, polydimethylsiloxane), water and the appropriate emulsifiers. The chemistry of silicones is currently in many fields, from the control of unwanted formation of foam, to improving wetting and levelling of multiple coatings, the improvement of resistance to water, abrasion, scratching, improvements in gliding, shine enhancement, non-stick effects and other effects that in many cases are achieved with a very low dosage. In the family of emulsions, those based on the chemistry of silicones have become very important. These have been, however, the challenges that Concentrol has willingly faced throughout its history, which has enabled us to develop the wide range of water-based products we currently market. On the other hand, achieving good stability of emulsions and dispersions is a considerable technical challenge. For example, and this list is not exhaustive, no toxicity, no volatile polluting emissions (VOC), the fact that it is not harmful to the environment, its low cost and the safety in its handling by avoiding the use of flammable solvents. The use of water as a carrier of the insoluble active product offers clear advantages over other carriers such as solvents. They are products that have often been developed to solve specific problems, with a high degree of specialization, often with close collaboration with our customers and that have been adapted to different chemical and industrial sectors.Įmulsions are products that typically contain a water-insoluble liquid, water and emulsifiers, so that a stable liquid product is obtained.Ī dispersion, likewise, is a preparation consisting of a solid insoluble in water, water and emulsifiers, to also achieve a stable liquid product. Within the range of chemical specialties that Concentrol makes, emulsions and dispersions have become one of the most important families.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |