Continuous production of expandable thermoplastics
    13.
    发明授权
    Continuous production of expandable thermoplastics 失效
    连续生产可膨胀热塑性弹性体

    公开(公告)号:US3676378A

    公开(公告)日:1972-07-11

    申请号:US3676378D

    申请日:1970-03-25

    Applicant: BASF AG

    CPC classification number: B29C44/461 B29C44/3442 C08J9/16

    Abstract: Continuous production of styrene polymers which contain an expanding agent and which are in the form of granules by extrusion of a mixture of a melt of the polymer with the expanding agent and rapid cooling of the extruded mixture, wherein excess expanding agent is first mixed with the melt and then the excess of expanding agent is evaporated. In this way both the production of a homogeneous mixture and the cooling of the mixture prior to extrusion to temperatures just above the softening point of the mixture are facilitated.

    Abstract translation: 连续生产含有发泡剂的苯乙烯聚合物,并且通过将聚合物的熔体与发泡剂的混合物挤出并挤出混合物的快速冷却而形成颗粒形式,其中过量的膨胀剂首先与 熔化,然后蒸发过量的发泡剂。 以这种方式,促进均匀混合物的生产和在挤出之前将混合物冷却至刚好高于混合物的软化点的温度。

    Molding material based on bitumen
    14.
    发明授权
    Molding material based on bitumen 失效
    基于BITUM的成型材料

    公开(公告)号:US3673141A

    公开(公告)日:1972-06-27

    申请号:US3673141D

    申请日:1969-10-29

    Applicant: BASF AG

    CPC classification number: C08L23/02 C08L23/0853 C08L95/00 C08L2666/04

    Abstract: Molding material comprising (a) a specially selected bitumen left as a residue in the distillation of petroleum which has been deacidified with calcium hydroxide and (b) an olefin polymer. The molding material may be pigment-colored and is used in the form of sheeting for insulation in construction.

    Abstract translation: 成型材料包括(a)特殊选择的沥青作为残余物残留在石油中,其已用氢氧化钙脱酸,和(b)烯烃聚合物。 成型材料可以是颜料着色的并且以用于建筑物绝缘的片材的形式使用。

    Chlorinating powdered vinyl chloride polymers
    15.
    发明授权
    Chlorinating powdered vinyl chloride polymers 失效
    氯化聚氯乙烯聚合物

    公开(公告)号:US3663392A

    公开(公告)日:1972-05-16

    申请号:US3663392D

    申请日:1970-06-18

    Applicant: BASF AG

    CPC classification number: C08F8/20 C08F14/00 C08F246/00

    Abstract: A process for the chlorination of vinyl chloride polymers in which a powdered vinyl chloride polymer is treated in a first stage with gaseous chlorine at below the softening point and under the action of light followed by a second stage in which it is treated at above the softening point while excluding light. The products are homogeneously chlorinated and have a high thermostability; they may be used as special glasses and for hot water pipes.

    Abstract translation: 氯乙烯聚合物的氯化方法,其中粉末状氯乙烯聚合物在第一阶段用气态氯处于低于软化点并在光的作用下处理第二阶段,其中它在高于软化处理 同时排除光。

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