Polurethane/polyurea-forming compositions

Details Polurethane/polyurea-forming compositions Polurethane/polyurea-forming compositions

C - Chemistry, Metallurgy

08

G

C08G 18/76 (2006.01) C08G 18/38 (2006.01) C08G 18/52 (2006.01) C08K 5/353 (2006.01)

Patent

CA 2325312

The present invention relates to the curative component of poly urethane/urea- forming casting compositions containing (a) an aromatic polyamine containing at least one thioether group, (b) a phosphate ester and (c) an aldehyde or a compound which forms an aldehyde upon reaction with water. Component (c) prevents the composition from discolouring with time into an unacceptable dark colour and also neutralises the strong odour resulting from the amine curative and its decomposition byproducts.

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