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1. 发明授权

US5156783A Two stage process for sulfonating plastic containers 失效
标题翻译：磺化塑料容器的两阶段工艺
公开(公告)号：US5156783A
公开(公告)日：1992-10-20
申请号：US643028
申请日：1991-01-18
申请人： Robert D. Seizert , Glenn T. VanVolkom , Mark Nulman , Donald L. Crites , William S. Aseltine
发明人： Robert D. Seizert , Glenn T. VanVolkom , Mark Nulman , Donald L. Crites , William S. Aseltine
IPC分类号： C08J7/12 , C08J7/14
CPC分类号： C08J7/14 , C08J7/12
摘要： A process for treating a container having a normally solid, polymer surface with a sulfur-containing compound is carried out in two stages. In the first stage, a first sulfonation treatment is conducted by: (i) contacting the surface at a temperature of about 115.degree. to about 140.degree. F. with a first sulfur-containing compound; and, (ii) washing the surface with an aqueous liquid. Optionally, in the first stage, after the surface is contacted with the first sulfur-containing compound, but before it is washed with the aqueous liquid, the surface may be contacted with a first neutralizing agent. In the second stage, a second sulfonation treatment is conducted by contacting the surface with a second sulfur-containing compound, a second neutralizing agent and washing the surface with an aqueous liquid. The second sulfur-containing compound and the second neutralizing agent may be the same as or different than the first sulfur-containing compound and the optional first neutralizing agent, respectively. The second sulfonation treatment is conducted in substantially the same manner as the first sulfonation treatment. The process is conducted for such a period of time and with such concentrations of the first and second sulfur-containing compounds, the optional first neutralizing agent and the second neutralizing agent, that the container has average permeability to unleaded gasoline of not greater than about 0.021 g/hr.The surface, after the two stage process is completed, comprises about 200 to about 1500 micrograms of sulfur per square inch of the surface and it is penetrated by the sulfur-containing compound to an average depth of at least about 10 microns.
摘要翻译：处理具有含硫化合物的正常固体聚合物表面的容器的方法分两个阶段进行。在第一阶段中，通过以下步骤进行第一次磺化处理：（i）在大约115°至大约140°F的温度下与第一含硫化合物接触; 和（ii）用水性液体洗涤表面。任选地，在第一阶段中，在表面与第一含硫化合物接触之后，在用水性液体洗涤之前，可以将表面与第一中和剂接触。在第二阶段中，通过使表面与第二含硫化合物，第二中和剂接触并用水性液体洗涤表面进行第二次磺化处理。第二含硫化合物和第二中和剂可以分别与第一含硫化合物和任选的第一中和剂相同或不同。以与第一次磺化处理基本相同的方式进行第二次磺化处理。该过程进行这样一段时间，并且使用第一和第二含硫化合物，任选的第一中和剂和第二中和剂的浓度，容器对无铅汽油的平均渗透性不大于约0.021 g / hr。两阶段工艺完成后的表面包括每平方英寸表面约200至约1500微克的硫，并且其被含硫化合物渗透至至少约10微米的平均深度。

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