Production process of modified polyether polyols and their use in production processes of polyurethane resins

摘要

Process for the preparation of modified polyether polyols by radical polymerization of I) 1-60 parts by weight of a mixture of A) 20-99.9% by weight of acrylonitrile B) 0-80% by weight of styrene C) 0.1-10 % By weight of an α, β-unsaturated mono- or polycarboxylic acid and D) 0-20% by weight of one or more further copolymerizable, olefinically unsaturated compounds. in II) 99-40 parts by weight of a polyether polyol in the presence of a free radical polymerization initiator, characterized in that the α, β-unsaturated mono- or polycarboxylic acid in the form of a salt with a primary, secondary or tertiary mono- or polyamine starts.