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Silicones, Silicone-Organic Hybrids and Silanes
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Silicones, Silicone-Organic Hybrids and Silanes
Versatile materials tailorable for an array of demanding applications
Silicones are synthetic polymers made up of silicon and oxygen, combined with other elements that are most typically carbon and hydrogen. It is a versatile material known for its outstanding temperature and oxidative stability, high resistance to natural aging processes, and chemical inertness.
Silicon-based materials are available in several forms—gasses, fluids, gums and solids—with properties that are substantially differentiated from organic-based offerings. Silanes and silicones can be easily formulated into curable compositions with unique properties and performance benefits, and they can be modified with organic functionality to tailor features derived from combinations of inorganic and organic character that enable a diverse range of important applications.
What makes silanes and silicones distinct is the silicon atom that is abundant in the earth’s crust as sand, also known as quartz. The silicon atom in these materials is typically bonded to a combination of oxygen atoms and a simple organic component primarily derived from methanol. Increasing the silicon-oxygen content makes these materials more “glass-like,” contributing to high thermal stability, durability and a “solid” form.
Whereas increasing the silicon-organic content makes them more “organic-like,” contributing to their unique surface characteristics, water repellency and a “fluid” form. Silicone properties and forms are defined by the balance of these contributions. Attaching more complex organic groups to these basic structures enables “silicone-organic hybrids,” providing an extraordinary range of properties and societal benefits.
We do not recommend use of our products beyond their usable life.
~ -120C, but in general should be used in a range of -45°C up to +150°C. There is crystalization in most silicones at -45°C and below, which change the mechanical/optical performance of the product.
Polydimethylsiloxane does not absorb almost any of the higher energy UV light under 310 nm or so, and not enough to cause Si-O bonds to break.
Compared to organic-based materials, silicone-based materials typically enable more demanding applications, from those operating at extreme temperatures, to those under harsh environmental conditions for long durations. They are used as additives that provide benefits like the ones below and many more.
Silicones are used across a variety of markets and applications including the ones listed below. They can also be found in a number of forms such as adhesives, sealants, rubber, emulsions, powders, fluids, and more.
Beauty and Personal Care
Developing eco-friendly materials and formulations for cosmetic and personal care products that unlock exciting benefits for brand owners and consumers.
Paints, Inks and Coatings
Partnering with paint, ink, and coatings formulators to develop innovative solutions to enhance performance, durability, aesthetics and sustainability.
Consumer Goods and Appliances
Collaborating across many industries to develop materials to improve consumer products people rely on every day.
Building, Construction and Infrastructure
Bringing together sustainability and high-performance infrastructure applications for building solutions and commercial construction materials.
Electronics
Helping you achieve faster processing, higher purity, higher conductivity, more sustainable silicone and organic solutions across the entire electronics value chain.
Chemical Manufacturing and Industrial
Working closely with manufacturers to make chemical manufacturing and industrial operations more sustainable and efficient.
SILASTIC™ Silicone Elastomer Custom Compound
Request custom compound silicones and fluorosilicone rubber elastomers to meet your unique end-use requirements and resolve your processing challenges. Engineered elastomers from Dow that meet your specific design needs for energy efficiency, greater comfort, safety and sustainability.
Conformal Coatings
Explore our portfolio of DOWSIL™ branded conformal coatings for vital protection of electronic components against harsh factors – and use filters to narrow by application, durometer/hardness, cure characteristics and more.
Gels and Encapsulants
Explore our portfolio of DOWSIL™ and SYLGARD™ branded gel encapsulants for vital protection of electronic components against harsh factors – and use filters to narrow by application, viscosity/flow, durometer/hardness, cure characteristics, one or two part and more.
Silicones, Silicone-Organic Hybrids and Silanes
Explore our range of silicones, silicone-organic hybrids and silanes which have enabled thousands of unique products used around the world.
Conductive Materials
Deliver solutions for your most sensitive assemblies with our industry-leading portfolio of thermally and electrically conductive silicones.
Optical Materials
Solve pressing design and manufacturing challenges such as bonding, sealing, protecting, insulating and improving productivity by streamlining manufacturing costs and cycle time.
Silicone Waxes
See how formulators seek to achieve new products that meet customer needs with our silicone waxes, powders and gums.
Thermoset Additives for Plastics
Meet market needs to enrich, reinforce and modify technical polymers in association with additives, mineral fillers and silicones in order to extend their potential.
Silicone Additives for Coatings
Produce better paints, coatings, printing inks and overprint with high performance silicone and siloxane additives.
Silicone Resins and Binders
Enable your coatings to do more with our diverse line of silicone resins, binders and intermediates.
Release Coatings
Enable individual tailoring of the system formulation to meet your targeted release profile with SYL-OFF™ release coatings.
Silicone Rubber Fabrication
Discover trusted, silicone-based materials offering a combination of properties that organic elastomers cannot match for industries like automotive, baking and molding.
Fascinating Silicones: Material forms that fuel innovation
From automotive to building and construction, personal care to electronics and lighting, Dow’s silicone materials are synonymous with efficiency, durability and reliability.
What are inhibitors for platinum-catalyzed addition-cure silicones?
- Amines and amides: – Neutralizing amines – Ethanolamine
- N-methylethanolamine, triethanolamine
- N,N-dimethyl ethanolamine, n-butylamine, diethylamine – Triethylamine, tetramethylenediamine, cyclohexylamine
- Melamine – Dimethylformamide
- Nitriles, cyanates, oximo, nitroso, hydrazo, azo compounds: – Adiponitrile – 2-butoxime – Alpha-nitroso-beta-naphthol
- Chelates: – EDTA (ethylenediaminetetraacetic acid) – NTA (nitriloacetic acid)
- Sulfides, thio compounds: – Dibenzyldisulfide, thioacetic acid, allylthiourea
- Fatty acid tin salts, such as those used in tin-catalyzed silicone release coatings
- Phosphines: – Triphenylphosphine
- Phosphites: – Triethylphosphite
- Arsines, stibenes, selenide, telluride:
- Triphenylarsine, triphenylstibene
- P-chlorophenylcarboxymethylselenide
- Chlorinated hydrocarbons that contain amine stabilizers
- Alcohols: – Ethanol, methanol
- Esters: – Ethyl acetate, vinyl acetate
- Compounds with unsaturated bonds
- Nonchlorinated aromatic and aliphatic solvents: – Toluene, xylene – Hexane, mineral spirits
- Polyethylene that has an anti-slip, antioxidant or other additive listed previously
- Primers with pigments that contain compounds listed previously
- 100% sodium salt primers, such as sodium alginate or carboxymethylcellulose sodium salt however, if these salts are used with hydroxyethylcellulose, inhibition will not occur
- Clay coatings that use polyvinylacetate or acrylic latex as a binder
- Coatings that contain calcium carbonate
- Coatings composed of the following combinations:
- Natural rubber latex/clay; latex/ethylated starch
- Styrene/acrylic
- Polyvinylacetate; polyvinylacetate/acrylic
- Polyvinylalcohol; polyvinylalcohol/alginate
- Ethylcellulose; hydroxyethylcellulose/alginate; hydroxyethylcellulose/carboxymethylcellulose
- Clay/S.B.R. coatings
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