Hexadecyltrimethoxysilane (C16) | Manta L1631

Manta L1631 is a monomeric long-chain alkyl functional silane, chemically identified as n-hexadecyltrimethoxysilane. Its very long 16-carbon (C16) linear chain gives strong hydrophobicity and high affinity for non-polar matrices.

The highly non-polar C16 structure significantly reduces the surface energy of treated substrates, which makes L1631 well suited as a surface modifier for inorganic fillers, pigments and glass fibers, with good dispersion and compatibility in non-polar polymers such as polyolefins. Its reactive methoxy groups hydrolyze rapidly, releasing methanol, and bond chemically to inorganic surfaces, while its high molecular weight brings very low volatility and high thermal stability.

Compared with Manta L1231, the C12 methoxy silane, L1631 has a longer alkyl chain. Manta L1831 has a longer C18 chain and can solidify at low temperatures, while L1631 is specified as a colorless transparent liquid.

• Mineral fillers for plastics and HFFR cables: surface treatment for inorganic flame retardants such as ATH and MDH, improving the dispersion and compatibility of highly loaded fillers in PE, PP and EVA, enhancing melt flow processability, reducing compound viscosity and preserving mechanical properties
• Silane creams and emulsions: active base material for VOC-compliant silane creams and gels and water-based water repellent emulsions, where slow evaporation gives a longer dwell time on the substrate and deeper penetration into high-density concrete
• Pigment dispersion and color masterbatches: lowers the surface energy of inorganic pigments such as titanium dioxide and iron oxides for rapid wetting and dispersion in non-polar media, with higher pigment loading, lower processing viscosity and enhanced color strength
• Glass fibers and mineral wool: long-lasting water resistance, improved resin wet-out and enhanced interfacial adhesion between inorganic fibers and organic resin matrices

Supplied in 20 kg pail, 180 kg drum and 900 kg IBC.