- ▸ Coupling agent: Bonds methacrylate/acrylic resins to glass and mineral fillers.
- ▸ Adhesion promoter: Improves resin adhesion in coatings and adhesives.
- ▸ Composites: Surface treatment for reinforcing fillers in unsaturated-polymer systems.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →3-Methacryloxypropylmethyldimethoxysilane (CAS 14513-34-9) is a methacrylate-functional organosilane coupling agent. Methacryloxy silanes of this class copolymerize with acrylic and unsaturated resins while their alkoxysilane groups bond to glass, mineral fillers, and metals, improving adhesion and reinforcement in coatings, adhesives, and composites. The single methyl substituent gives a difunctional alkoxysilane with lower crosslink density than the trifunctional trimethoxy analogue.
Frequently Asked Questions
What is 3-methacryloxypropylmethyldimethoxysilane (MPDMS) used for?
MPDMS is a methacrylate-functional organosilane coupling agent. The methacryloxy group copolymerizes with acrylic and unsaturated resins while the alkoxysilane groups bond to glass, mineral fillers, and metals, improving adhesion and reinforcement in coatings, adhesives, and composites.
How does MPDMS differ from MPTMS (the trimethoxy version)?
MPDMS carries a single methyl substituent, making it a difunctional alkoxysilane with two methoxy groups rather than three. This gives lower crosslink density than the trifunctional trimethoxy analogue (MPTMS), useful where a more flexible filler-resin interface is preferred.
What is the CAS number and formula of MPDMS?
3-Methacryloxypropylmethyldimethoxysilane has CAS number 14513-34-9 and molecular formula C10H20O4Si, in the Silanes & Organosilanes family.
What resin systems is MPDMS compatible with?
It is designed for methacrylate/acrylic and unsaturated-polymer systems, where the methacrylate group copolymerizes into the resin during cure. It is used as a coupling agent and surface treatment for reinforcing fillers in those matrices.
What bulk packaging and documentation does RawSource provide for MPDMS?
RawSource distributes MPDMS in drums, totes, and IBCs to manufacturers, with Certificate of Analysis and Safety Data Sheet per lot. Request a bulk quote with your target volume for current pricing and lead time.