Methacryloxy Silane Crosile® 570(MAPTMS)

Crosile-570 is 3-Methacryloxypropyltrimethoxysilane

(MAPTMS). It is a methacrylfunctional silane that can be used as adhesion promoter, surface modifier, co-monomer for polymer synthesis and crosslinker.

Item NO.:
Crosile® 570
Chemical Name:
3-Methacryloxypropyltrimethoxysilane
Chemical Formula:
CH3CCH2COO(CH2)3Si(OCH3)3
CAS No.:
2530-85-0
EINECS No:
219-785-8
Properties:
• Coupling agent • Improved adhesion • Increased wet and dry tensile strength and modulus to the composite • Increased wet and dry flexural strength and modulus to the composite • Increased wet and dry compressive strength • Improved compatibility between inorganic filler and organic polymer

Inquire Now

Methacryloxy Silane Crosile® 570 丨CAS 2530-85-0丨MAPTMS

Chemical Properties

Crosile® 570 is 3-Methacryloxy propyl trimethoxy silane（MAPTMS). It is a methacrylfunctional silane that can be used as adhesion promoter, surface modifier, co-monomer for polymer synthesis and crosslinker.

CAS NO:2530-85-0

Specifications

Test Item	Target Values(Spec,Limits)
Crosile® 570 content	≥ 98.00%
Density (g/cm3)	1.045 +- 0.005
Colour	Light yellow transparent liquid
Refractive Index (25°C)	1.4290+-0.005

MAPTMS Application

Versatile Silane Coupling Agent for Composites, Wire & Cable, and Coatings

Crosile- 570 is primarily used to enhance the mechanical, electrical, and optical properties of unsaturated polyester composites, with particular improvement in moisture resistance.

Artificial Marble and Engineered Quartz
Crosile- 570 is applicable in engineered quartz manufacturing and plays a useful role in producing intermediate products such as unsaturated polyester, ethylene‑propylene copolymer, polystyrene, ABS, polyurethane, polybutadiene, and peroxide‑crosslinked polyethylene. When used as a modifier, it reinforces the bending strength of artificial marble while reducing production costs.
Adhesives and Coatings
In acrylic and polyester adhesives, Crosile® 570 improves water resistance, adhesion to inorganic substrates, and reduces solidification value. It can also copolymerize with vinyl acetate, acrylic acid, and methacrylic acid monomers, offering exceptional adhesion and durability in coatings, adhesives, and sealants.

Glass Fiber Reinforcement
In glass fiber applications, Crosile- 570 is applied as a soakage agent formulation (containing film formers, lubricants, antistatic agents, and water) at a concentration of 0.3% to 0.6%. This treatment significantly improves the wet mechanical and electrical properties of the composite.

Wire and Cable
In the wire and cable industry, Crosile- 570 improves the dissipation factor and specific inductive capacitance when used in peroxide‑crosslinked EPDM systems containing clay. Compared to vinyl silane at the same dosage, Crosile® 570 delivers up to 2.5 times better performance.
Package and storage

1. Package: 25 kg plastic drum /carton, 200kg spray coating iron drum

2. Storage: Kept in a low temperature, dry and ventilated place, avoid direct sunlight.

3. Shelf life: One year in ventilating, cool and dry area.