Silane Coupling Agents | Adhesion Promoters | Methacryloxy Silanes | Surface Modifiers

SiSiB® PC4300

Synonym: (3-Methyldimethoxysilyl)propylmethacylate;

Countertype of DowCorning Z-6033, ShinEtsu KBM-502

Chemical Structure


SiSiB® PC4300 is a methacryl-functional silane, it is a clear, light and heat sensitive liquid with a faintly sweet odour.

SiSiB® PC4300 is used as adhesion promoter at organic/inorgainc interfaces, as surface modifier (e.g. imparting water repellency, organophilic surface adjustment) or as crosslinking of polymers). It is used as a coupling agent to improve the physical and electrical properties of glass-reinforced and mineral-filled thermosetting resins under exposure to heat and/or moisture. It is typically employed as a blend additive in resin systems that cure via a free radical mechanism (e.g. polyester, acrylic) and in filled or reinforced thermoplastic polymers, including polyolefins and polyurethanes. It is also used to functionalize resins via radical initiated processes - copolymerization or grafting - and to modify surfaces.

Typical Physical Properties

Chemical Name: gamma-Methacryloxypropylmethyldimethoxysilane
CAS No.: 14513-34-9
EINECS No.: 238-518-6
Empirical Formula: C10H20O4Si
Molecular Weight: 232.35
Boiling Point: 83°C [3mmHg]
Flash Point: 115°C
Color and Appearance: Clear to straw liquid with mild odor
Density [25°C]: 1.00
Refractive Index [25°C]: 1.433
Purity: 98.0% by GC


SiSiB® PC4300 can improve strength as glass fiber size composite in reinforced polyester composites.

SiSiB® PC4300 can enhance initial and wet strength of reinforced polyester resin composites.

SiSiB® PC4300 can enhance the wet electrical properties of many mineral-filled and reinforced composites.

SiSiB® PC4300 crosslinked acrylic type resins can improve adhesion and durability of adhesives and coatings.


Net weight 25Kg plastic drum, 200Kg steel drum or 1000Kg IBC container, for more details, please visit Packing Centre.

Technical Library

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