About Gelest (Mitsubishi Chemical)

Established in 1991 and now a core research and manufacturing excellence center of Mitsubishi Chemical Group, Gelest, Inc. spearheads advanced materials development in the polymer science arena. Gelest offers a portfolio of specialty silicones, organosilanes, metal-organics, and acrylate monomers designed to enhance adhesion, curing, dispersion, and surface compatibility. As part of Mitsubishi Chemical’s “KAITEKI” philosophy, Gelest aligns innovation with sustainability and societal well-being, offering technical support and expertise to accelerate commercialization of next-gen materials.

DMS -C16

DMS -C16 by Gelest (Mitsubishi Chemical) acts as surfactant and processing aid for dispersion of particles in silicone formulations. In DMS -C16 the term carbinol refers to a hydroxyl group bound to carbon (C-OH) and is frequently used in silicone chemistry to differentiate them from hydroxyl groups bound to silicon (Si-OH) which is referred to as silanols. It contains primary hydroxyl groups which are linked to the siloxane backbone by non-hydrolyzeable transition groups. It may be reacted into polyurethanes, epoxies, polyesters and phenolic. This carbinol (hydroxyl) terminated siloxane with caprolactone transition blocks offer a highly polar component which enables compatibility in a variety of thermoplastic resins. Used in encapsulant applications.

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SSP 055

SSP 055 by Gelest (Mitsubishi Chemical) is a triethoxysilyl modified poly-1,2-butadiene, 50% in toluene. SSP 055 is used as coupling agent for EPDM resins.

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HMS -064

HMS -064 by Gelest (Mitsubishi Chemical) is 5-7% (Methylhydrosiloxane) and 93-5% (dimethyl-siloxane copolymer). This trimethylsiloxy terminated hydride functional polymer undergoes three main classes of reactivity: hydrosilylation, dehydrogenative coupling and hydride transfer. HMS -064 has more readily controlled reactivity than the homopolymers which results in tougher polymers with lower cross-link density. The preferred catalysts for the reactions are platinum complexes such as SIP6830.3 and SIP6832.2. In principle, the reaction of hydride functional siloxanes with vinyl functional siloxanes takes place at 1:1 stoichiometry. HMS -064 is used in encapsulant applications.