Octamethylcyclotetrasiloxane Market Overview The octamethylcyclotetrasiloxane (D4) market involves the production and application of a key silicone intermediate widely used in the manufacture of silicone polymers, elastomers, and resins. Octamethylcyclotetrasiloxane is a cyclic siloxane compound essential in personal care products, industrial lubricants, adhesives, and coatings. Its unique...