PROCESS FOR PRODUCING HARD POLYURETHANE FOAMS,申请号CA19942176959-传众专利搜索

PROCESS FOR PRODUCING HARD POLYURETHANE FOAMS

申请公布号：CA2176959(A1)

申请号：CA19942176959

申请日期：1994.11.09

申请公布日期：1995.06.01

申请人：

BAYER AKTIENGESELLSCHAFT

发明人：EISEN, NORBERT;KLAN, WALTER;OTTO, FRANK;THOMPSON-COLON

分类号：C08J9/02;C08G18/00;C08G18/06;C08G18/08;C08G101/00;C08J9/00;C08J9/12;C08J9/14;(IPC1-7):C08L75/04

主分类号：C08J9/02

摘要：Hard foams having urethane groups are produced by reacting a) polyisocyanates with b) compounds having at least two hydrogen atoms capable of reacting with isocyanates and a molecular weight from 92 to 10,000 in the presence of c) water and alkanes as organic foaming agents and d) solubilisers and if required e) other aids and additives known per se. The process is characterised in that one uses as solubiliser d) a compound having at least one polar group selected from the group made of d1) (I) R1-O-CO-O-R2, in which R1 and R2 stand for alkyl groups with 1 to 12 C atoms or represent together an alkylene group with 2 to 6 C atoms; d2) of formula (II), in which R3 and R4 stand for alkyl groups with 1 to 12 C atoms and n equals 0 to 6; d3) of formula (III), in which R5 to R7 stand for a possibly halogen-substituted alkyl group with 1 to 12 C atoms, a cycloalkyl group with 5 to 10 C atoms or an aryl group with 6 to 12 C atoms; d4) a reaction product of (i) 2 moles in total of a fatty acid component that consists of at least one possibly unsaturated fatty acid with 15 to 25 C atoms and (ii) one mole in total of a diamine component that consists of at least one diamine of formula (IV), in which n = 2 to 10; or d5) of formula: NR8R9R10R11+X-, in which R8 to R11 stand for alkyl residues with 1 to 16 C atoms and X- stands for sulphate, carbonate, sulphonate and halogenide.