Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Shin-Etsu KBM-13 Methyltrimethoxysilane

Shin-Etsu KBM-13 Methyltrimethoxysilane is a high-purity organosilicon coupling agent from Shin-Etsu’s KBM series. It enhances adhesion between organic polymers and inorganic substrates like glass, metals or fillers. Widely used in sealants, coatings, and RTV silicones, it hydrolyzes to form silanol groups that bond covalently with surfaces. Offers excellent moisture resistance, storage stability, and reactivity control.
  • shin etsu kbm 13 methyltrimethoxysilane_2d2d603b
  • shin etsu kbm 13 methyltrimethoxysilane_2d2d603b

Features Of Shin-Etsu KBM-13 Methyltrimethoxysilane

  1. Highly reactive alkoxysilane with excellent hydrolytic stability under controlled conditions.

  2. Provides strong covalent bonding between organic polymers and inorganic substrates (e.g., glass, metals, minerals).

  3. Low viscosity and high purity enable uniform dispersion and efficient surface modification.

  4. Enables moisture-curable crosslinking, enhancing durability and adhesion in ambient-cure systems.

  5. Compatible with a broad range of resins including acrylics, epoxies, polyurethanes, and silicone elastomers.

Typical Applications Of Shin-Etsu KBM-13 Methyltrimethoxysilane

  1. Adhesion promoters in automotive sealants and structural adhesives.

  2. Surface modifiers for silica fillers and pigments in coatings and composites.

  3. Coupling agent in RTV silicone rubber formulations to improve filler-matrix interaction.

  4. Hybrid sol-gel precursors for functionalized thin-film coatings and anti-corrosion primers.

  5. Moisture-scavenging additive in moisture-sensitive polymer systems and electronic encapsulants.

Specifications Of Shin-Etsu KBM-13 Methyltrimethoxysilane

Chemical TypeMethyltrimethoxysilane (MTMS)
Product FormLiquid
AppearanceColorless to pale yellow transparent liquid
Specific Gravity (25°C)0.94–0.96 g/cm³
Refractive Index (25°C)1.372–1.378
Boiling Point120–125°C (at 760 mmHg)
Flash Point (Tag Closed Cup)22–25°C
Storage StabilityStable for ≥12 months in sealed containers at 5–30°C, protected from moisture


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