Abstract
3-Methacryloxypropyltrimethoxysilane (CAS No. 2530-85-0), Silane coupling agent SCA-R74M, 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
 Z-6030
KBM-503
 Dynasylan MEMO
 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 SCA-R74M, 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.