Oligomeric phosphoric acid esters bearing hydroxya

专利名称：Oligomeric phosphoric acid esters bearing

hydroxyalkoxygroups, their preparation anduse

发明人：SICKEN, MARTIN, DR.申请号：EP94117991.3申请日：19941115公开号：EP0658561A1公开日：19950621

摘要：The invention relates to mixtures of oligomeric phosphoric acid esters bearinghydroxyalkoxy groups, of the formula I wherein q is an average chain length of 0.5 to 10,R1 is a hydroxyl-containing radical of the formula IIa, R2 is a radical of the formula III R3 isa radical of the formula IIb, R4 = R1 or R3; R5, R6 and R7 are an H atom or an alkyl radicalhaving 1 to 6 C atoms, m = 0 to 4 and n = 1 to 4. Additionally, the invention relates to aprocess for the preparation of the mixtures and their use as reactive flame retardants inpolyurethane foams.

申请人：HOECHST AKTIENGESELLSCHAFT

地址：D-65926 Frankfurt am Main DE

国籍：DE

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