Siwin is a leading manufacturer and supplier of organosilanes for over 15 years.

Besides common used silanes such as amino, epoxy and vinyl silanes, Siwin also supply silanes with specific functions for specific abilities. Siwin Donor series silanes  (such as DONOR - C and DONOR - D) are widely used in multiple industries, mainly including the polypropylene industry, glass fiber industry etc.

Polypropylene Industry

In the polypropylene industry, Siwin donor silanes act as co - catalysts and tacticity regulators. They can adjust the tacticity of polypropylene products and improve product performance. For example, dicyclopentyl dimethoxysilane (Siwin-Donor-D) shows unique properties in polypropylene production and is especially suitable for the production of special - purpose polypropylene materials. It can significantly increase the bending modulus of the products.

Glass Fiber Industry

In the glass fiber industry, silane coupling agents (such as Siwin-Donor-C and Donor-D) are mainly used to improve the adhesion properties between glass fibers and resins. By treating the surface of glass fibers, the strength, electrical properties, water resistance, and weather resistance of composite materials can be significantly improved. Even in a wet state, the mechanical properties of composite materials can be significantly enhanced