| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyurethane foam excellent in flame-retardant performance.SOLUTION: The polyurethane foam is obtained by reacting and curing a mixture which contains a silicone foam stabilizer represented by general formula (1) where the ratio of m/(n1+n2) is 1 to 5 inclusive, a polyisocyanate component, a polyol component, a foaming agent, and a catalyst. (Rand Reach represent -CHor a phenyl group; Rrepresents a monovalent organic group having a molecular weight of 400 to 3,100 inclusive; Rrepresents a divalent organic group having a molecular weight of 400 to 3,100 inclusive; X represents a substituent having active hydrogen; m represents an integer of 1 or more; n1 and n2 each independently represent an integer of 0 or more; and at least one of n1 and n2 is 1 or more.)SELECTED DRAWING: None |
