commercial types Suprasil UVL or Corning 7979, produced from octamethylcyclotetrasiloxane
was acquired from Sigma-Aldrich (USA).
A common approach to lower VOC content in solvent-based alkyd coatings is to use exempt solvents, such as acetone, methyl acetate, parachlorobenzotrifluoride (PCBTF), octamethylcyclotetrasiloxane
(D4 cyclic siloxane), and tert-butyl acetate.
Bis(3-aminopropyl)-tetramethyldisiloxane (BAPTM DS) and octamethylcyclotetrasiloxane
3] used Tomlinson's model to study temperature dependence of friction on n-hexadecane and octamethylcyclotetrasiloxane
and in each case his results show inverse relationship.
7 Aerosil 300SP DDS = dimethyldichlorosilane HMDS = hexamethyldisilazane D4 = octamethylcyclotetrasiloxane
PDMS = polydimethylsiloxane Note: Hydrophobic fumed silica is labeled with the suffix "R" and "R" means repellent.
We therefore used octamethylcyclotetrasiloxane
(OMS; Fluka), which has a boiling point of 448 K and a chemical shift of 0.
Alternatively, some solventborne resin manufacturers have effectively substituted VOC-exempt substances like octamethylcyclotetrasiloxane
(D4) in place of mineral spirits.
Cyclosiloxanes are widely used, with the most common types being hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane
Bis(3-aminopropyl)-tetramethyldisiloxane (BAPTMDS) and octamethylcyclotetrasiloxane