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.
Reactive flame retardant blends for flexible polyurethane foam
申请人:ICL-IP America Inc.
公开号:US10597511B2
公开(公告)日:2020-03-24
The present invention provides dialkyl phosphorus-containing compounds, namely reactive mono-hydroxyl-functional dialkyl phosphinates in a blend with a phosphate compound, said blend serving as highly efficient reactive flame retardant blend in flexible polyurethane foam. The invention further provides fire-retarded polyurethane compositions comprising said the reaction product of the flame retardant blend with polyol and isocyanate foam forming components.