The curing mechanism of MS polymers is essentially a two step process. First hydrolysis takes place and the methoxy silane groups (-Si(OCH3)x) are changed into silanol groups (-Si(OH)x). These silanols then condense together to siloxane groups (-Si-O-Si-) which form a network of cross linked polymers. To make this curing process happen, both water and a catalyst should be present. This implicates that the polymer has excellent storage stability. As long as there is no catalyst added, even in contact with water the polymer remains very stable.
