Abstract
3-Methacryloxypropyltrimethoxysilane (CAS No. 2530-85-0), Silane coupling agent KH-570, is a versatile methacryloxy functional silane coupling agents used to improve the physical and electrical properties of glass reinforced and mineral filled thermoset resin, typically those curing via a free-radical mechanism (e. G. Polyester, polyurethanes and acrylics) and in filled or reinforced thermoplastic polymers, including polyolefins and thermoplastic polyurethanes.

Identification
Name    3-Methacryloxypropyltrimethoxysilane
Synonyms    3-Trimethoxysilyl-propyl-methacrylate
Molecular Formula    C10H20O5Si
Molecular Weight    248.35
CAS Registry Number    2530-85-0
EINECS    219-785-8

Equivalents
Momentive (formerly OSi Specialties ) Silquest A-174  
Dow Corning Z-6030  
ShinEtsu KBM-503  
EVONIK Degussa Dynasylan MEMO  
Wacker GENIOSIL GF 31
Chisso Sila-Ace S710
UCT Specialties (formerly Petrarch) M8550

Properties
Density    1.055
Boiling point    255 C degree
Refractive index    1.4205
Flash point    108 C degree
Water solubility    REACTS

Application
3-Methacryloxypropyltrimethoxysilane (CAS No. 2530-85-0), Silane coupling agent KH-570, is an important additive for many applications. Examples are:
1\Significantly improves composite strengths when the composite is reinforced with fiber glass roving sized with a typical polyester compatible formulation. These formulations normally incorporate silane coupling agents, film-forming resins, lubricants and antistatic agents.
2\Enhances the strength performance both initially and after wet-conditioning, of cured polyester resin composites filled with silica, glass fiber, silicates and many metal oxides.
3\Enhances the wet electrical properties of many mineral-filled composites, such as crosslinked polyethylene and polyvinyl chloride.