Organosilane Coupling Agents

21 silane coupling agents and surface modifiers for composites, rubber, coatings, and polymer crosslinking — from integrated manufacturing.

Request Samples & TDS

Silantek manufactures organosilane coupling agents and surface modifiers from a dedicated production facility integrated with the company's MS polymer sealant operations. This vertical integration — from silane synthesis through to finished adhesive and sealant formulation — provides direct application experience that informs product development, quality specifications, and technical support.

Silane coupling agents function as molecular bridges between inorganic surfaces and organic polymer matrices. The right silane selection depends on the application: the polymer system being reinforced, the surface being treated, or the crosslinking mechanism being employed. The product range is organized by application to help you identify the right chemistry for your process.

Each product is manufactured under controlled conditions with batch-level quality documentation including assay, refractive index, specific gravity, and moisture content. Products are available in 200 kg steel drums and 1,000 kg IBC totes, with sample quantities for qualification testing.

View silane applications guide →

Browse by Application

Composites & Reinforcement

Coupling agents for fiberglass sizing, mineral filler treatment, and adhesion promotion in epoxy, polyester, vinyl ester, and radical-cure composite systems. Seven products spanning aminosilane, epoxysilane, methacryloxysilane, and ureidosilane chemistries — covering wind energy blades, automotive reinforced plastics, PCB laminates, PV encapsulant films, and construction FRP.

Rubber & Tire Compounding

Sulfur-functional silanes for silica-reinforced tire compounds, rubber-to-metal bonding, and anti-corrosion surface coupling. Three products including the polysulfide silanes (Si-69 and Si-75 equivalents) that underpin green tire technology, and a mercaptosilane for metal surface chemisorption.

Surface Treatment & Coatings

Silanes for hydrophobic surface modification, construction water repellency, sol-gel coating formation, PFAS-free textile finishing, LED encapsulant modification, chromate-free corrosion protection, and precision casting binders. Seven products ranging from C1 methylsilane through C16 long-chain alkylsilane, plus network-forming silicate esters and arylsilanes.

Polymer Crosslinking & Modification

Silanes for moisture-curable polyethylene crosslinking (wire and cable insulation), sealant moisture scavenging, silane-terminated polyurethane synthesis, and reactive polymer intermediate production. Four products serving cable compound manufacturers, adhesive and sealant formulators, and hybrid polymer chemists.

Full Product Reference

Complete catalog of all 21 products listed by CAS number, with functional group, molecular weight, and application summary. For the buyer who already knows the molecule.

Need technical specifications or samples?

Request detailed product data, certificates of analysis, or sample quantities for qualification testing.

Contact Our Team