Silane Coupling Agent

Mercapto Silane

Mercapto silane is a silane coupling agent with mercapto functional groups, used as adhesion promoters, surface modifiers, coupling agents and crosslinkers. With the presence of mercapto group and alkoxy group, mercapto silanes can build a molecular bridge between organic resins and inorganic substrates.

Product grades

Molecular structure
Mercapto Silane silane coupling agent

Typical physical properties
Chemical Name: 3-Mercaptopropyltrimethoxysilane
CAS No.: 4420-74-0
EINECSNo.: 224-588-5
Formula: C6H16O3SSi
Appearance: Colorless transparent liquid
Refractive Index(n25D): 1.4300~1.4500
Purity: 98%

Application
Improves the adhesion of polysulfide and polyurethane sealants to glass and metal surfaces.
Improves low-rolling resistance in silica-reinforced tire tread compounds. Enhances properties in mineral-reinforced articles such as shoe soles, rubber goods. Suitable for use in polymer such as Butyl | Epoxy | Neoprene | Nitrile | Phenolic | Polysulfide | Polyurethane | Styreue Butadiene.

Possible Alternative
Wacker: MCPTM
DOWCorning: Z6062
Shin-Etsu: KBM-803
Momentive: A-189
Evonik: MTMO

Molecular structure
Mercapto Silane silane coupling agent

Typical physical properties
Chemical Name: 3-Mercaptopropyltriethoxysilane
CAS No.: 14814-09-6
EINECS No.: 238-883-1
Formula: C9H22O3SSi
Appearance: Colorless transparent liquid
Refractive Index(n25D): 1.4280~1.4380
Purity: 98%

Application
Improves the adhesion of polysulfide and polyurethane sealants to glass and metal surfaces.
Improves low-rolling resistance in silica-reinforced tire tread compounds. Enhances properties in mineral-reinforced articles such as shoe soles, rubber goods. Suitable for use in polymer such as Butyl | Epoxy | Neoprene | Nitrile | Phenolic | Polysulfide | Polyurethane | Styreue Butadiene.

Possible Alternative
Wacker:
DOWCorning: Z6911
Shin-Etsu: KBE-803
Momentive: A-1891
Evonik:

Molecular structure
Mercapto Silane silane coupling agent

Typical physical properties
Chemical Name: 3-Mercaptopropylmethyldimethoxysilane
CAS No.: 31001-77-1
EINECSNo.: 250-426-8
Formula: C6H16O2SSi
Appearance: Colorless transparent liquid
Refractive Index(n25D): 1.4450~1.4550
Purity: 98%

Application
Improves the adhesion of polysulfide and polyurethane sealants to glass and metal surfaces.
Improves low-rolling resistance in silica-reinforced tire tread compounds. Enhances properties in mineral-reinforced articles such as shoe soles, rubber goods. Suitable for use in polymer such as Butyl | Epoxy | Neoprene | Nitrile | Phenolic | Polysulfide | Polyurethane | Styreue Butadiene.

Possible Alternative
Wacker:
DOWCorning:
Shin-Etsu: KBE-802
Momentive:
Evonik:

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This disclaimer of warranty and liability also applies – particularly in foreign countries – with respect to third parties’ rights.

I wholeheartedly recommend SINOSIL INCORPORATED to anyone seeking textile auxiliary include silicone softening agent, water repellent. Their unparalleled professionalism, innovative solutions, and customer-centric approach make them a standout choice in the industry.

Head of Denim at Ex-Archroma