| abstract |
PURPOSE:To provide the title compsn. which gives flame-retardant non-rigid urethane foam which does not cause scorching phnomenon, consisting of a polyether polyol, an ethylene oxide adduct of a carboxylic acid and a diol contg. a primary hydroxyl group. CONSTITUTION:Not less than 95wt% mixture of 88-98wt% polyether polyol (a) having an average MW of 2,000-10,000, 2-8wt% adduct (b) obtd. by adding 2-20mol of ethylene oxide alone or ethylene oxide and propylene oxide to 1mol of an 8C or higher carboxylic acid and 0-4wt% diol (c) contg. at least one hydroxyl group and having an average MW of 62-400, and not more than 5wt% additives such as toner, antioxidant, etc. are blended to obtain a polyol compsn. The compsn, is reacted with a polyisocyanate in the presence of water, a foam stabilizer for slab foam and/or a foam stabilizer for HR foam, a metal- contg. catalyst and/or a tert-amine catalyst, and a triaryl phosphate flame retarder, to obtain a flame-retardant rigid urethane foam. |