BX-MQR-604 Series Methyl MQ silicone resin
MQ silicone resin is a polysiloxane compound. It has a unique double-layer spherical structure. This structure is compact and uniform. It provides excellent heat resistance. It has good film-forming capability. The resin offers strong adhesion. It demonstrates water repellency. It resists aging effectively. It blocks UV radiation well. It functions as a tackifier. It is used in silicone pressure-sensitive adhesives. It applies to construction sealants. It enhances organic resin coatings. It bonds mobile phone buttons securely. It modifies epoxy adhesives effectively.
Ⅰ. Product Details
| Model | 604 series methyl MQ silicone resin | ||
| Index | 604P | 604S | 604N |
| Appearance | White Powder | Colorless Transparent Liquid | Colorless transparent viscous liquid |
| Viscosity(25℃) | – | 15-30S (4# cup) | ＞10000 cp [1] |
| Solid content% | ＞99 | 65±2 | ＞99 |
| M/Q value | 0.6-0.9 [2] | 0.6-0.9 [2] | 0.6-0.9 [2] |
| Note: 1. [1] (Viscosity parameter of 604N) and [2] (M/Q value for all 604 series models) are customizable based on customer requirements, allowing tailored performance for specific application scenarios; 2. Technical clarification: The “M/Q value” in methyl MQ silicone resin denotes the molar ratio of monofunctional siloxane (M units: -Si(CH₃)₃) to tetrafunctional siloxane (Q units: -SiO₄/₂). This ratio is critical—lower values (≈0.6) enhance thermal stability and cured hardness, while higher values (≈0.9) improve flexibility and compatibility with organic resins; 3. Product form applications: – 604P (white powder, ≥99% solid content): Ideal for solvent-free formulations, high-temperature curing systems, or as a reinforcing additive in composites (minimizes volatile emissions); – 604S (colorless liquid, 15-30S viscosity, 65±2% solids): Suited for low-viscosity processes like thin-film coating, electronic component impregnation, or spray applications (excellent flow and wetting properties); – 604N (viscous liquid, ＞10000cp, ≥99% solids): Designed for thick-film protective coatings or high-performance adhesives (prevents sagging on vertical surfaces and ensures minimal shrinkage during curing). | |||
Ⅱ. Packaging and Storage
Packed in 25kg cardboard drums or 200kg lined plastic iron drums. Room temperature sealed storage, solution for half a year, powder and silicone oil type for one year. If the storage time exceeds the expiration date indicated on the label, it does not mean that the product cannot continue to be used. But in this case, retesting is necessary.
Ⅲ. Instructions
1.Used as tackifier for silicone pressure-sensitive adhesive;
2.High temperature resistant coatings, used for insulation, bonding, sealing, etc. of Class H motors
3.Reinforcing additive in condensation silicone rubber, to enhance color, transparency and mechanical strength
4.Waterproof coatings in daily chemical industry, such as lipstick
5.It can be used as a raw material for making release agents;
6.Raw material for defoamer to improve defoaming and foam inhibition ability.