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Silquest A-171* Silane

Enhanced Crosslinking of Polymers

An excellent candidate for crosslinking organic polymers, Silquest A-171 silane offers vinyl and silane functionality and also can be utilized for chain extension of RTV silicones or OH functional polymers. This results in Si-O-Si crosslink sites that are highly resistant to the effects of exposure to moisture, chemicals and UV rays. As a siloxane crosslinker, Silquest A-171 silane typically does not generate color and is resistant to acid rain under most conditions. This silane is also useful as a moisture scavenger in moisture cure systems where improved shelf life is desired.

Silquest* A-171 Marketing Bulletin

Silquest Silquest A-171 silane offers vinyl and silane functionality, making it suitable for crosslinking organic polymers. It is also recommended for chain extension of RTV silicones or other silane or OH functional polymers. The resulting Si-O-Si crosslink sites are highly resistant to exposure to moisture, chemicals and UV. Siloxane crosslinks tend to not generate color and are resistant to environmental factors, such as acid rain. Silquest A-171 silane may also be useful as a moisture scavenger in moisture cure systems where enhanced shelf-life is sought.

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More About Silquest A-171* Silane

A monomeric vinyl functional silane in vinyl acrylic and acrylic resins, Silquest A-171 silane can be added as a monomer during emulsion polymerization to form silane-modified latexes. Functioning as a crosslinker, the silane in these latexes forms very stable Si-O-Si linkages. 

 

Vinyl silanes can also be grafted to specific unsaturated polymers, such as polyethylene, polyester and styrene-butadiene co-polymers, resulting in resins which exhibit silane functionality. The resin can then be crosslinked through an ambient moisture cure mechanism. By crosslinking through this process, higher temperature resistance - along with greater tensile and tear strengths - is achieved for thermoplastic resin-based materials. 

 

The electron-withdrawing effect displayed by the silane's vinyl functionality enhances the rate of hydrolysis. This increased activity makes Silquest A-171 silane one of the quickest hydrolyzing alkoxy silanes on the market. With this elevated rate of hydrolysis, Silquest A-171 silane is an excellent candidate to consider for use as a moisture-scavenging agent in sensitive moisture systems. 

 

For key features, typical benefits and physical properties, potential applications and more, please download the marketing bulletin on this page. 

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