I. Chemical Name: γ-(Methacryloyloxy)propyltrimethoxysilane(KH-570)

II. Corresponding Grades at Home and Abroad:

KH-570 (Chinese Academy of Sciences)A-174 (Union Carbide Corporation, USA)

KBM-503 (Shin-Etsu Chemical Co., Ltd., Japan)

III. Physical and Chemical Properties and Specifications:

This product is a colorless transparent liquid, readily soluble in a variety of organic solvents. It is prone to hydrolysis and condensation to form polysiloxanes, and may polymerize under excessive heat, light exposure, or in the presence of peroxides.

CAS NO.	2530-85-0
Molecular Weight	248.35
Boiling Point	78 ~ 81°C (at 0.13 kPa)
Density (ρ25):	1.0450 ± 0.0050 g/mL
Refractive Index (nD25)	1.4290 ± 0.0050

IV. Applications:

1. Primarily used in unsaturated polyester composite materials to enhance mechanical properties, electrical properties, and light transmittance, particularly significantly improving the wet-state performance of the composites.

2. When used to treat fiberglass via sizing (containing this coupling agent), it improves the wet mechanical strength and electrical properties of fiberglass-reinforced composites.

3. In the wire and cable industry, this coupling agent is used to treat clay-filled, peroxide-crosslinked EPDM systems, improving the dissipation factor and specific inductive capacitance.

4. It can be copolymerized with vinyl acetate and acrylic or methacrylic acid monomers. These polymers are widely used in coatings, adhesives, and sealants, providing excellent adhesion and durability.

5. This product can also be used as an additive component in artificial stone adhesives.

V . Storage: This product should be stored in a tightly sealed container in a cool, well-ventilated area.

Chemical Additives

BK-570 Silane Coupling Agent