PRODUCTION OF SUBSTANTIALLY CLOSED CELL HARD FOAMABLE MATERIAL HAVING URETHANE GROUP OR URETHANE GROUP AND ISOCYANURATE GROUP

    公开(公告)号:JPS63161012A

    公开(公告)日:1988-07-04

    申请号:JP31241087

    申请日:1987-12-11

    Applicant: BASF AG

    Abstract: A process wherein… a) organic polyisocyanates are reacted with… b) relatively high-molecular-weight polyester-polyols which contain bonded units having one or more of the structures… -O-CH2-CH(CH3)-CH2-CH2-CH2-O- (I)… -O-CH2-CH(C2H5)-CH2-CH2-O- (II)… -OC-CH(CH3)-CH2-CH2-CO- (III) and… -OC-CH(C2H5)-CH2-CO- (IV)… or mixtures of said polyester-polyols and conventional polyester-polyols and/or polyether-polyols, in the presence of… c) catalysts,… d) blowing agents, and optionally… e) chain extenders and/or crosslinking agents,… f) assistants and/or additives. … The rigid foams containing urethane or urethane and isocyanurate groups are suitable for reinforcing mechanical construction parts or as an insulating material.

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