Import 3-(Trimethoxysilyl)Propyl Isocyanate — Buy in Bulk from Supplier in China

3-(trimethoxysilyl)propyl isocyanate is a bifunctional organosilane coupling agent with the trade designation LS-M41, carrying CAS number 15396-00-6 and EINECS number 239-415-9. The molecule combines a trimethoxysilyl group at one terminus with an isocyanate reactive group at the other, enabling crosslinking between inorganic substrates and organic polymer matrices. Nanjing Silfluo New Material Co., Ltd. supplies this material as a colourless to pale yellow liquid with typical purity specifications suited for industrial surface modification and adhesion promotion applications.

The isocyanate functionality reacts selectively with hydroxyl and amino groups present on metals, glass, minerals, and some polymer surfaces, forming stable urethane or urea linkages. The trimethoxysilyl moiety undergoes hydrolysis in the presence of atmospheric moisture to generate silanol groups, which then condense with surface silanols or metal hydroxyls to create durable Si-O-M bonds. This dual reactivity profile distinguishes it from simple alkoxysilanes and makes it particularly effective for improving adhesion at heterogeneous interfaces in composites, coatings, and sealant formulations.

Primary buyers include manufacturers of polyurethane adhesives, industrial coatings, glass-fibre reinforced plastics, and electronic encapsulants. The material serves as an adhesion promoter in solvent-based and moisture-cure systems, as well as a surface modifier for pigments and fillers. Typical applications span automotive sealants, construction adhesives, printed circuit board coatings, and polymer-modified cement systems. Buyers should confirm with Nanjing Silfluo New Material Co., Ltd. the specific grade purity, residual methanol content, and recommended application concentrations for their intended end-use.

Nanjing Silfluo New Material Co., Ltd. is located at Room 313-45, Building A10, No. 9 Kechuang Avenue, Intelligent Manufacturing Industrial Park (Zhihe Park), Jiangbei New District, Nanjing 210009, China. The company operates within the harbour trust tier on the platform, with a response rate of 0.00% and zero average response hours recorded. This profile indicates limited active engagement data is currently available for prospective buyers to assess communication reliability.

The supplier lists its core product as LS-M41, a proprietary-designated organosilane coupling agent positioned as an equivalent to established products including Silquest A-Link 35, Shin-Etsu KBM-9007, and Wacker GF 40. Its source description outlines application knowledge in surface treatment, adhesion promotion, and polymer modification, though it provides no information about manufacturing capacity, quality management certifications, export experience, or customer references. Buyers should request details on batch consistency, analytical certificates of analysis, and regulatory documentation directly from the supplier before committing to orders.