Methyl MQ Silicone Resin, CAS 67763‑19‑3, is a non‑functional methyl‑terminated M‑Q structured silicone resin synthesized via co‑hydrolysis and polycondensation of silane monomers. With adjustable M/Q molar ratio, it exhibits excellent compatibility with linear silicone polymers. It acts as reinforcing filler and tackifier for silicone rubber and silicone‑based pressure‑sensitive adhesive, enhancing mechanical property and adhesive performance while maintaining good thermal stability of silicone

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Methyl MQ Silicone Resin CAS 67763‑19‑3, General‑Purpose MQ Resin for Silicone Rubber Reinforcement & Pressure Sensitive Adhesive

This general‑grade methyl MQ silicone resin is produced through controlled co‑hydrolysis and polycondensation of methyl silane and tetrafunctional silicate monomers. The molecular framework consists of monofunctional trimethylsiloxy M‑units and tetrafunctional siloxane Q‑units, forming compact three‑dimensional spherical silicone macromoleculesXJY SILICO.... No reactive vinyl, hydrogen or silanol groups are present on molecular chains, delivering stable inert characteristics. The M/Q ratio can be tailored during manufacturing to balance hardness, solubility and compatibility with different silicone polymer matrices.

When applied for silicone rubber reinforcement, the fine MQ resin domains disperse uniformly within the linear silicone rubber matrix during compounding and mixing. It builds physical cross‑linking networks through intermolecular siloxane interactions, effectively boosting tensile strength, tear resistance and hardness of cured silicone rubber without sacrificing material elasticity. It reduces permanent compression set for HTV and RTV silicone rubber compounds, improving dimensional stability of finished rubber parts.

For silicone pressure‑sensitive adhesive (PSA) formulations, this methyl MQ resin functions as a critical tackifying component. It modifies the viscoelastic property of base silicone gum, raising initial tack, enhancing peel strength and optimizing cohesive holding power. Proper dosage adjustment balances peel resistance and creep resistance for silicone PSA, which is essential for manufacturing silicone adhesive tapes, protective films and label adhesive layers.

The resin shows good solubility in common silicone solvents, aromatic and aliphatic hydrocarbon solvents. It demonstrates outstanding high‑temperature resistance, low‑surface‑energy performance and excellent anti‑oxidation property. Since there are no reactive functional groups on the molecule, this resin only delivers physical modification rather than chemical cross‑linking. It is not suitable to act as cross‑linker for addition‑cure or condensation‑cure silicone systems.

During compounding processing, sufficient high‑shear mixing is required to achieve homogeneous dispersion of MQ resin inside silicone gum. Insufficient mixing will lead to localized agglomeration, which may generate surface speckles on cured rubber or cause unstable tack values for pressure‑sensitive adhesive. Formulation dosage should be optimized according to targeted hardness and adhesive requirements of end products.

The product shall be stored in hermetically sealed packaging under dry and cool conditions. Avoid direct long‑term exposure to high‑humidity atmosphere to prevent moisture‑induced agglomeration. Cross‑contamination with functional‑grade MQ silicone resins should be prevented during material handling, to avoid unexpected property fluctuation in silicone rubber and pressure‑sensitive adhesive batches. This general‑purpose methyl MQ silicone resin is a core modifying raw material for silicone rubber reinforcement and silicone pressure‑sensitive adhesive production.

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Methyl MQ Silicone Resin CAS 67763-19-3, General-Purpose MQ Resin for Silicone Rubber Reinforcement & Pressure Sensitive Adhesive

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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.