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19 records (took 0.028 seconds)

    1.
    发明专利
    未知

    公开(公告)号：FR2470142A1

    公开(公告)日：1981-05-29

    申请号：FR8024507

    申请日：1980-11-19

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： SUDA MICHIKO ASAI YOSHIO ,  IMADA KIYOSHI ,  UENO SUSUMU ,  NOMURA HIROKAZU

    IPC: C08J7/00 ,  B29C35/08 ,  B29C59/16 ,  C08F2/48 ,  C08K5/1515 ,  C08L27/06 ,  C08L63/00 ,  C08J7/10 ,  B29C25/00 ,  C08K5/10 ,  C08K5/15

    Abstract: The invention provides a novel method for obtaining a shaped article of a vinyl chloride-based resin which is markedly insusceptible to the undesirable phenomenon of exudation or bleeding of the plasticizer and other additive ingredients contained therein on to the surface of the article. The method comprises formulating the resin composition for the fabrication of the shaped article with an epoxy compound containing, preferably, at least 2% by weight of the oxirane oxygen in the molecule in an amount of at least 0.05% by weight based on the vinyl chloride-based resin and irradiating the shaped article with ultraviolet light having a substantial energy distribution in the wavelength region of 200 nm or shorter. The shaped article obtained by the inventive method is remarkably insusceptible to the plasticizer bleeding even after prolonged outdoor exposure or irradiation with ultraviolet light having wavelengths longer than 290 nm.

    8.
    发明专利
    未知

    公开(公告)号：DE3002049A1

    公开(公告)日：1980-07-31

    申请号：DE3002049

    申请日：1980-01-21

    Applicant: AGENCY IND SCIENCE TECHN ,  SHINETSU CHEMICAL CO

    Inventor： ASAI MICHIHIKO ,  SUDA YOSHIO ,  IMADA KIYOSHI ,  UENO SUSUMU ,  NOMURA HIROKAZU

    IPC: C08J7/00 ,  A61L33/00 ,  B05D7/22 ,  B29C59/14 ,  B29D7/22

    Abstract: The invention provides an effective method for subjecting the inner surface of a tubular body made of a plastic resin to a treatment with low temperature plasma according to which the tubular body is dipped in an insulating oil bath while the inside of the tubular body is filled with a plasma gas under a reduced pressure and electric power for the generation of a low temperature plasma is supplied to electrodes surrounding the tubular body in the insulating oil. Several of the problems in the prior art methods can be solved by the present invention such as undesirable thermal degradation of the tube surface by the evolved by the electric discharge, and power loss due to the generation of plasma outside the tubular body. When the method of the invention is applied to the treatment of a continuous length tubular body, the tubular body is continuously moved in the insulating oil through the electrodes surrounding it, with the optional provision of a sleeve made of an insulating material placed between the electrodes and the tubular body, so as that the tubular body is free from adverse effects caused by direct contact with the electrodes.

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