Coatings & Construction / Solution Family

Silicone Process Oils

Silicone defoamers, slip and flow additives, and reactive silicones u2014 PDMS fluids, methyl silicone resins, and treated fumed silica u2014 for surface control and film performance in coatings.

Overview

Silicone fluids and additives are organosilicon (polysiloxane) polymers and oligomers built on a silicon–oxygen backbone, used across industrial manufacturing for low surface tension, thermal and oxidative stability, water repellency, lubricity, and defoaming and mold-release behavior over a broad viscosity range. The family spans non-reactive polydimethylsiloxane (PDMS) fluids, volatile carrier siloxanes, functional (reactive) silicones, and silicone resins. RawSource sources these silicone fluids in bulk — drums, totes, and container loads — to specified viscosity, purity, and functionality.

Match the chemistry to the sub-application. Non-volatile PDMS fluids — Silicone Oil 5 cSt (Dimethicone, PDMS) and Polydimethylsiloxane (PDMS) Fluid — serve as lubricants, release agents, defoamers, and process aids where a stable, low-volatility film is wanted. Volatile siloxane carriers — Hexamethyldisiloxane (MM, HMDSO), Octamethyltrisiloxane (MDM), Decamethyltetrasiloxane (MD2M), Cyclopentasiloxane (D5), Octamethylcyclotetrasiloxane (D4), and Methyl Trimethicone — act as fast-evaporating solvents and spreading fluids that leave minimal residue. For reactive or functional needs, Vinyl-Terminated Polydimethylsiloxane (Vinyl PDMS) is a base polymer for addition-cure silicone elastomers; Amino-Functional Silicone (aminosilicone) provides substantivity for fiber and surface finishing; and PEG-12 Dimethicone is a water-dispersible silicone surfactant and emulsifier. Silicone resins — Trimethylsiloxysilicate (MQ Resin) as a film-forming and tackifying additive, and Polymethylsilsesquioxane as a matting and anti-tack powder — adjust film integrity and surface feel.

These products are for industrial and professional use only. Confirm current SDS handling data, viscosity and functional grade, material compatibility, and regulatory status — including any restrictions on cyclic siloxanes such as D4 and D5 — for your specific process and jurisdiction before use.

Recommended Chemistries
21 materials
Amino-Functional Silicone (Aminosilicone)
CAS 71750-80-6
Amino-functional silicone (substrate wetting) Quick view
Dimethicone (PDMS, Silicone oil, Dimethyl silicone)
CAS 9006-65-9
PDMS defoaming & slip fluid Quick view
Dimethicone (Polydimethylsiloxane, PDMS)
CAS 9006-65-9
PDMS defoaming & slip fluid Quick view
Dimethicone Crosspolymer
CAS 300-00-5
Film Formation Quick view
Hexamethyldisiloxane (MM, HMDSO)
CAS 107-46-0
Solvency Quick view
Liquid Silicone Rubber (LSR)
CAS 70131-67-8
Crosslinking / Curing Quick view
Phenyl Trimethicone
CAS 2116-84-9
Conditioning Quick view
Polymethylsilsesquioxane
CAS 68554-70-1
Film Formation Quick view
Silicone Oil 1,000 cSt (Dimethicone, PDMS)
CAS 9006-65-9
PDMS defoaming & slip fluid Quick view
Silicone Oil 10 cSt (Dimethicone, PDMS)
CAS 9006-65-9
PDMS defoaming & slip fluid Quick view
Silicone Oil 10,000 cSt (Dimethicone, PDMS)
CAS 9006-65-9
PDMS defoaming & slip fluid Quick view
Silicone Oil 100 cSt (Dimethicone, PDMS)
CAS 9006-65-9
PDMS defoaming & slip fluid Quick view
Silicone Oil 100,000 cSt (Dimethicone, PDMS)
CAS 9006-65-9
PDMS defoaming & slip fluid Quick view
Silicone Oil 12,500 cSt (Dimethicone, PDMS)
CAS 9006-65-9
PDMS defoaming & slip fluid Quick view
Silicone Oil 350 cSt (Dimethicone, PDMS)
CAS 9006-65-9
PDMS defoaming & slip fluid Quick view
Silicone Oil 5 cSt (Dimethicone, PDMS)
CAS 9006-65-9
PDMS defoaming & slip fluid Quick view
Silicone Oil 50 cSt (Dimethicone, PDMS)
CAS 9006-65-9
PDMS defoaming & slip fluid Quick view
Silicone Oil 500,000 cSt (Dimethicone, PDMS)
CAS 9006-65-9
PDMS defoaming & slip fluid Quick view
Silicone Oil 60,000 cSt (Dimethicone, PDMS)
CAS 9006-65-9
PDMS defoaming & slip fluid Quick view
Trimethylsiloxysilicate (MQ Resin)
CAS 56275-01-5
MQ silicone resin (film former) Quick view
Vinyl-Terminated Polydimethylsiloxane (Vinyl PDMS)
CAS 68951-99-5
Reactive vinyl silicone (crosslinking) Quick view
Where it's used
  • Defoaming and air release in waterborne and solvent-borne coatings
  • Flow, leveling, and slip control in industrial and architectural finishes
  • Mar and slip improvement on topcoats and clearcoats
  • Hard, glossy, heat-resistant films built with silicone resins
  • Rheology control, anti-settling, and matting with treated fumed silica
Frequently asked questions
What silicone additives does RawSource supply for coatings?
For coatings, RawSource sources PDMS (dimethicone) defoaming and slip fluids, methyl silicone resins, amino-functional and vinyl-terminated silicones, MQ-type silicone resin, and treated fumed silica. All are described by chemistry and available in bulk with CAS and documentation for RFQ.
What does a silicone additive do in a coating?
At low dose, silicones control foam, surface slip, and flow and leveling during application. Reactive and resin silicones build film hardness, gloss, and adhesion. Choose the additive by the surface defect you are solving or the film property you need, and confirm it is compatible with your binder.
Why can silicone additives cause coating defects?
The surface activity that lets a silicone clear foam and add slip can, in excess or with the wrong grade, migrate to the film surface and cause fish-eyes, recoat failure, and loss of intercoat adhesion. Screen any silicone additive in the full system and keep the dose to the minimum that solves the defect.
What is the difference between a silicone defoamer and a flow additive?
A defoamer destabilizes and collapses foam, often PDMS carried on treated silica. A flow and leveling additive lowers surface tension so the wet film levels out. Some PDMS fluids do both at different doses, so match the grade and dose to the specific job.
Disclaimer. Information on this page is provided for general reference and compiled from authoritative public sources (e.g. PubChem/ECHA). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot you purchase governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim. Always consult the current Safety Data Sheet (SDS) before handling, and confirm regulatory status, classification, and suitability for your application and jurisdiction.
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