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107 条记录 (耗时 0.016 秒)

    Ozonolysis of hydrogenated latices
    7.
    发明授权
    Ozonolysis of hydrogenated latices 失效
    氢化胶乳的臭氧分解

    公开(公告)号：US5039737A

    公开(公告)日：1991-08-13

    申请号：US481390

    申请日：1990-02-22

    申请人： Dane K. Parker ,  James R. Purdon, Jr.

    发明人： Dane K. Parker ,  James R. Purdon, Jr.

    IPC分类号： C08J3/00 ,  C08C1/00 ,  C08C1/02 ,  C08C19/04 ,  C08J3/26 ,  C08J5/00

    CPC分类号： C08C19/04 ,  C08C1/02

    摘要： The subject invention relates to a process for treating an emulsion of a crosslinked elastomeric polymer containing residual hydrazine to obtain a latex of soluble elastomeric polymer having a reduced concentration of residual hydrazine therein, said process comprising the addition of ozone to said emulsion in an amount and under conditions which are sufficient for the ozone to react with the crosslinked elastomeric polymer and the residual hydrazine to produce a latex of soluble elastomeric polymer having a reduced level of residual hydrazine therein. The process of the present invention also improves the color of latex by removing color-bodies, such as benzoquinone, which may be present in the original latex.

    摘要翻译： 本发明涉及一种处理包含残留肼的交联弹性体聚合物的乳液的方法，以获得其中残留肼浓度降低的可溶性弹性体聚合物胶乳，所述方法包括向所述乳液中加入一定量的和 在足以使臭氧​​与交联的弹性体聚合物和残余的肼反应以产生其中具有降低的残余肼水平的可溶性弹性体聚合物的胶乳的条件下。 本发明的方法还通过去除可能存在于原始胶乳中的着色体（例如苯醌）来改善胶乳的颜色。

    Production of ozonides from unsaturated polymers
    8.
    发明授权
    Production of ozonides from unsaturated polymers 失效
    从不饱和聚合物生产臭氧化物

    公开(公告)号：US4336356A

    公开(公告)日：1982-06-22

    申请号：US180753

    申请日：1980-08-25

    申请人： Shaul M. Aharoni ,  Dusan C. Prevorsek ,  George J. Schmitt ,  Gary A. Harpell ,  Lester T. C. Lee

    发明人： Shaul M. Aharoni ,  Dusan C. Prevorsek ,  George J. Schmitt ,  Gary A. Harpell ,  Lester T. C. Lee

    IPC分类号： C08C19/04 ,  C08F8/06

    CPC分类号： C08C19/04 ,  C08F8/06 ,  C08F8/44 ,  C08G69/26 ,  C08F2810/20

    摘要： Partially unsaturated polymers are dissolved in a two component solvent comprising a first component having a reactivity toward ozone less than carbon-carbon double bonds but more reactive than carbon-carbon single bonds and a second component being inert toward ozone. Introduction of ozone into the solution produces ozonides which are readily cleft into difunctional aliphatic species that can be converted to e.g. carboxy-terminated or multifunctional carboxy substituted aliphatic compounds. These may be used as monomeric species in various polymerization schemes as such, in preparation of polyamides, for example, or may be reduced to aldehydes or alcohols to be used in the preparation of such polymers as polyesters, polyurethanes, poly (Schiff bases), etc. The carboxylated products may also be employed as ionomers, which are useful as surfactants. Monocarboxyl terminated polyethylene having a number average molecular weight of from about 4,000 to 100,000 are provided. Poly(carboxymethyl) substituted polyethylenes, wherein from about 0.05 to 1.3 percent of the hydrogen atom or polyethylene are substituted with carboxymethyl groups, are obtained.

    摘要翻译： 部分不饱和聚合物溶解在包含对臭氧反应性低于碳 - 碳双键但比碳 - 碳单键反应性更高的第一组分的第二组分和对臭氧呈惰性的第二组分的双组分溶剂中。 将臭氧引入溶液中产生臭氧化物，其易于裂解成可以转化为例如二官能的脂族物质。 羧基封端或多官能的羧基取代的脂族化合物。 这些可以在各种聚合方案中用作单体物质，例如在制备聚酰胺时，或者可以还原成醛或醇，以用于制备聚合物如聚酯，聚氨酯，聚（席夫碱）， 羧化产物也可以用作离聚物，它们可用作表面活性剂。 提供数均分子量为约4,000至100,000的单羧基封端的聚乙烯。 得到其中约0.05-1.3％的氢原子或聚乙烯被羧甲基取代的聚（羧甲基）取代的聚乙烯。