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    Sulfonyl semicarbazides
    2.
    发明授权
    Sulfonyl semicarbazides 失效
    磺酰氨基脲

    公开(公告)号：US3903157A

    公开(公告)日：1975-09-02

    申请号：US44022274

    申请日：1974-02-06

    Applicant: UNIROYAL INC

    Inventor： HUNTER BYRON A

    IPC: C07C311/49 ,  C07C20060101 ,  C07C67/00 ,  C07C301/00 ,  C07C133/02

    CPC classification number: C07C311/49

    Abstract: Organic sulfonyl semicarbazides are prepared by reacting a salt of a sulfinic acid with azodicarbonamide in the presence of water. E.g., reaction of sodium p-toluene sulfinate with azodicarbonamide in water yields p-toluene sulfonyl semicarbazide, useful as a blowing agent.

    Abstract translation: 有机磺酰基氨基脲通过在水存在下使亚磺酸的盐与偶氮二甲酰胺反应来制备。 例如，对甲苯磺酸钠与偶氮二甲酰胺在水中的反应产生对甲苯磺酰基氨基脲，可用作发泡剂。

    Hydrazoidicarboxylates used as blowing agents to form gas expandable polymeric materials
    3.
    发明授权
    Hydrazoidicarboxylates used as blowing agents to form gas expandable polymeric materials 失效
    用作发泡剂形成气体可膨胀聚合材料的肼基羧酸酯

    公开(公告)号：US3894974A

    公开(公告)日：1975-07-15

    申请号：US45699474

    申请日：1974-04-01

    Applicant: UNIROYAL INC

    Inventor： HUNTER BYRON A ,  HOLLMANN GERALD J

    IPC: C08J9/06 ,  C08J9/10 ,  C08J1/20

    CPC classification number: C08J9/10 ,  C08J9/06 ,  C08J9/104

    Abstract: Certain hydrazodicarboxylates, namely polymers or oligomers made by reacting hydrazine with polyfunctional haloformates, especially difunctional haloformates, cyclized forms of said oligomers and condensation products of hydrocarbyl carbazates with polyfunctional, especially difunctional, haloformates are useful as chemical blowing agents for expanding gas-expandable polymeric materials. These compounds are novel.

    Abstract translation: 某些肼基二羧酸盐，即通过肼与多官能卤代甲酸酯，特别是双官能卤代甲酸酯反应制得的聚合物或低聚物，所述低聚物的环化形式和烃基碳酸肼与多官能的，特别是双官能的卤代甲酸酯的缩合产物可用作膨胀气体可膨胀聚合材料的化学发泡剂 。 这些化合物是新的。

    Gas-expanding polymers using hydrazodicarboxylates
    8.
    发明授权
    Gas-expanding polymers using hydrazodicarboxylates 失效
    使用水合氧化铝的气体扩散聚合物

    公开(公告)号：US3888801A

    公开(公告)日：1975-06-10

    申请号：US45703674

    申请日：1974-04-01

    Applicant: UNIROYAL INC

    Inventor： HUNTER BYRON A ,  BARROWS FRANKLIN H

    IPC: C08J9/06 ,  C08J9/10 ,  C08J1/20

    CPC classification number: C08J9/06 ,  C08J9/10 ,  C08J9/104

    Abstract: Disclosed is the gas expansion or blowing of gas-expandable polymers with a particular class of dihydrocarbyl hydrazodicarboxylates, namely those wherein at least one of the two hydrocarbyl groups is a secondary or tertiary C3 to C5 alkyl group, especially isopropyl, secondary butyl, or tertiary butyl, while the other hydrocarbyl group is a primary, secondary or tertiary straight-chain or branched-chain alkyl group having from 1 to 8 carbon atoms, a cycloalkyl radical having from 5 to 8 carbon atoms, an aryl radical having from 6 to 10 carbon atoms, or an alkaryl or aralkyl radical having from 7 to 10 carbon atoms, and preferably is a C1 to C4 alkyl group. Of the di C1 to C4 alkyl hydrazodicarboxylates, those wherein both alkyl groups are secondary or tertiary such as diisopropyl, isopropyl secondary butyl, di-secondary butyl, and tertiary butyl hydrazodicarboxylates evolve the greatest volumes of gas upon decomposition and are therefore deemed to be the most effective for use in practicing the invention.

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