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    2-methylene-3-butenyl isocyanate and preparation thereof
    52.
    发明授权
    2-methylene-3-butenyl isocyanate and preparation thereof 失效
    2-甲基-3-丁烯异氰酸酯及其制备方法

    公开(公告)号：US3627809A

    公开(公告)日：1971-12-14

    申请号：US3627809D

    申请日：1969-04-24

    申请人： DOW CHEMICAL CO

    发明人： THOMAS ROBERT J

    IPC分类号： C07C263/02 ,  C07C119/04

    CPC分类号： C07C265/00

    摘要： 2-Methylene-3-butenyl isocyanate is prepared by the reaction of a quaternary ammonium cyanate with 2-chloromethyl-1,3-butadiene or the reaction of phosgene with 2-aminomethyl-1,3-butadiene. As a butadiene it is copolymerizable with butadiene, acrylonitrile and other olefinic monomers to produce polymers having pendant NCO groups and useful as adhesives. As an isocyanate it is reactive with active hydrogen compounds to produce urethanes, ureas, etc.

    Alicyclic diisocyanates
    53.
    发明授权
    Alicyclic diisocyanates 失效
    高分子二异氰酸酯

    公开(公告)号：US3624122A

    公开(公告)日：1971-11-30

    申请号：US3624122D

    申请日：1966-06-24

    申请人： GEN MILLS INC

    发明人： KAMAL MARWAN R ,  NAZY JOHN R ,  WHEELER DONALD H

    IPC分类号： C07C265/08 ,  C08G18/32 ,  C08G18/75 ,  C08G18/81 ,  C08G85/00 ,  C07C87/34 ,  C07C119/04

    CPC分类号： C07C265/00 ,  C08G18/3256 ,  C08G18/75 ,  C08G18/757 ,  C08G18/8125

    摘要： WHERE R1 and R2 are H or CH3 with the proviso that one of such radicals must be H and R3 and R4 are H or CH2NCO with the proviso that one of such radicals must be H and the other must be CH2NCO. Polymers prepared by reacting such diisocyanates with compounds having at least two active hydrogen atoms as determined by the Zerewitinoff method.

    Diisocyanates of the formula R''-Z-R''''-CH2NCO where R'' is a monovalent straight chain saturated or ethylenically unsaturated aliphatic hydrocarbon radical containing 2 to 6 carbon atoms, R'''' is a divalent straight chain saturated or ethylenically unsaturated hydrocarbon radical containing 7 to 11 carbon atoms, the sum of the carbon atoms in R'' and R'''' is 13, and Z is a divalent radical of the structure