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Mineral oil antifoams are highly effective, cost-efficient, and often silicon-free agents used to break and suppress foam in water-based systems like paints, adhesives, and coatings. They typically consist of 85–95% aliphatic mineral oil acting as a carrier, hydrophobic particles (like silica or wax) that rupture foam, and surfactants for dispersion.
Core Components & Chemistry
- Carrier Oil: Refined aliphatic mineral oils are the main component (50%–95%), serving as a carrier for the hydrophobic particles.
- Hydrophobic Particles: These particles, such as hydrophobic silica, waxes (e.g., ethylene bis-stearamide), or metal stearates, are essential for penetrating and destabilizing foam bubbles.
- Emulsifiers: These enable the mineral oil to form stable emulsions in water-based systems. Modern defoamers use APEO-free emulsifiers for health safety.
- Performance Additives: The formula may include hydrophobic particles, silicone oils (if not specified as silicone-free), and other organic compounds to improve effectiveness.
Common Applications
Mineral oil-based defoamers are used where silicones might cause surface defects or where cost-efficiency is key:
Mineral oil-based defoamers are used where silicones might cause surface defects or where cost-efficiency is key:
- Coatings & Paints: Used in matte and semi-gloss emulsion paints, inks, and paper coatings.
- Adhesives & Binders: Effective in water-based, pressure-sensitive, and latex adhesives.
- Industrial Processes: Water-based systems, Wastewater treatment, and textile auxiliaries.
- Lubricants: Used in water-miscible lubricants.
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Web results
mineral oil defoamers
BYK additives
https://www.byk.com › defoamers-and-air-release-agents
BYK additives
https://www.byk.com › defoamers-and-air-release-agents
Mineral oil defoamers consist of approximately 85–95 % mineral oil and 1–3 % hydrophobic particles. They also contain emulsifiers, biocides and other ...Read more
Mineral Oil Defoamers
ywlchemical.com
https://ywlchemical.com › mineral-oil-defoamer
ywlchemical.com
https://ywlchemical.com › mineral-oil-defoamer
Jan 13, 2026 — Mineral oil defoamer work by reducing the surface tension of the foaming medium, breaking down foam bubbles, and preventing their formation.
Understanding the Chemistry of Antifoams and Defoamers
Applied Material Solutions
https://appliedmaterialsolutions.com › Blogs
Applied Material Solutions
https://appliedmaterialsolutions.com › Blogs
Aug 30, 2021 — Antifoams are typically inert chemicals. They consist of a liquid component (eg, nonionic surfactant, mineral oil, and/or silicone) and a hydrophobic solid.Read more
Mineral Oil Based Defoamer,Anti Foaming Agent In Oil
Nanjing Antifoam Environmental Technology Co., Ltd
https://www.antifoamchemical.com › mineral-oil-antifoa...
Nanjing Antifoam Environmental Technology Co., Ltd
https://www.antifoamchemical.com › mineral-oil-antifoa...
It provides highly effective antifoaming and foam suppressive performance in paint and ink, and other systems that cannot use silicone-based defoamer.Read more
DAPRO® Defoamers
Elementis Global
https://www.elementis.com › user_upload › ELE...
Elementis Global
https://www.elementis.com › user_upload › ELE...
PDF
Mineral oil. Acts typically as the carrier for the hydrophobic components. Surface active dispersing agents/emulsifiers. The dispersing agent ensures an optimum ...Read more
9 pages
Antifoams for oil-based Lubricants
Evonik
https://products.evonik.com › assets › Antifoams...
Evonik
https://products.evonik.com › assets › Antifoams...
PDF
▫ TEGO® Antifoam MR 2124. Based on mineral oil and finely-dispersed waxes. ▫ Competitor Antifoam A. Based on mineral oil and wax. TEGO® Antifoam MR 2124.Read more
35 pages
Mineral oil antifoam agent and production method thereof
Google Patents
https://patents.google.com › patent
Google Patents
https://patents.google.com › patent
The defoamer is applied in oil production, well drilling, oil-gas separation, oil fermentation, oil ink production, waste water treatment and other processes, ...Read more
People also ask
What is the formulation of mineral oil defoamer?
Mineral oil defoamers consist of approximately 85–95 % mineral oil and 1–3 % hydrophobic particles. They also contain emulsifiers, biocides and other performance-enhancing ingredients such as modified polysiloxanes. Aliphatic mineral oils are used as the carrier oil.
mineral oil defoamers - BYK
BYK additives
https://www.byk.com › defoamers-and-air-release-agents
BYK additives
https://www.byk.com › defoamers-and-air-release-agents
Why is mineral oil not recommended for older adults?
The Beers criteria state that mineral oil should be avoided in older adults owing to concerns about aspiration; safer alternatives are available. Recommendations for laxatives in older adults are similar to those used in the general adult population.
Constipation in older adults: Stepwise approach to keep things moving
PMC - NIH
https://pmc.ncbi.nlm.nih.gov › articles › PMC4325863
PMC - NIH
https://pmc.ncbi.nlm.nih.gov › articles › PMC4325863
Web results
Mineral Oil Antifoam E-302/E-303/E-304
Zilibon Chemical
https://www.zilibon.com › proShow_1083
Zilibon Chemical
https://www.zilibon.com › proShow_1083
Mineral oil antifoam has fast defoaming and high efficiency, and can be dispersed in water to form an emulsion with moderate stability.
Mineral Oil based Defoamers 5427 - Harmony
harmonychemicals.com
https://www.harmonychemicals.com › mineral-oil-base...
harmonychemicals.com
https://www.harmonychemicals.com › mineral-oil-base...
Additive 5427 is a fully active liquid defoamer composed of mineral oil and hydrophobic material, complemented by small amounts of specialized silicone.Read more
₹174.00In stock
A Practical Guide to Defoamers
BASF Insights
https://insights.basf.com › files › PracticalGuide-D...
BASF Insights
https://insights.basf.com › files › PracticalGuide-D...
PDF
These mineral oils are excellent base fluids to formulate effective defoamers and to achieve a reliable long term defoaming effect at an optimum cost/Â ...Read more
12 pages