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LR-MQV Powder Vinyl-Functional MQ Silicone Resin
Silfluo LR-MQV is a vinyl-functional MQ silicone resin (CAS 68998-89-6) supplied as a free-flowing white spherical powder with ≥95% active content. The resin is synthesized by co-hydrolysis of silicate (Q units) and vinyldimethylsiloxy/trimethylsiloxy (M units), forming a three-dimensional polysiloxane network with controlled M/Q ratio of 0.7–1:1 and customizable vinyl group content.
Terminal and pendant vinyl groups participate in Pt-catalyzed hydrosilylation with Si–H crosslinkers, incorporating the MQ resin into the addition-cure network. The Q-unit silicate core provides the reinforcing function — restricting siloxane chain mobility and raising modulus, hardness, and tensile strength of the cured elastomer relative to unfilled or resin-free formulations. M/Q ratio controls resin compatibility with silicone polymer matrices and the balance between reinforcing effect and film flexibility.
Spherical particle morphology and low fine dust content reduce airborne dust generation during handling and improve powder flow and dispersion rate in high-shear mixing operations.
