Isocyanate-Free Silicone Modified Polyurethane Sealants 

Product Information SPU Sealant  The curing mechanism of silicone-modified sealants is to take advantage of the action of water vapor in the air to cause hydrolysis of silanized polymers with a -Si(OR), or -SiR (OR)-structure at the end of the chain and cross-linking them into elastomers with a Si-O-Si mesh structure, thus achieving sealing and adhesive effects. Silicone-modified polyurethane sealant environmental protection and weatherability Silicone-modified polyurethane sealant does not contain free isocyanate, does not contain solvents, there is no toxicity in storage and use, the product meets the humidity curing only released a trace of alcohol molecules, fully in line with environmental requirements, and stone, cement, steel and other building materials, non-corrosive. Silicon modified polyurethane molecular chain in the unsaturated bond content is extremely low, has good weathering and aging resistance, resistance to climate change and UV radiation, outdoor use do…