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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
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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公开(公告)号：DE2930030A1
公开(公告)日：1980-02-14
申请号：DE2930030
申请日：1979-07-24
Applicant: AGENCY IND SCIENCE TECHN , SHINETSU CHEMICAL CO
Inventor： ASAI MICHIHIKO , SUDA YOSHIO , IMADA KIYOSHI , UENA SUSUMU , NOMURA HIROKAZU
IPC: C08J7/00 , B29C59/14 , B29C71/04 , C08J3/18 , C08J3/28 , C08J7/12 , C08J7/18 , C08K5/09 , C08K5/10 , C08K5/12 , C08L27/06 , C08J7/10
Abstract: In the inventive method, shaped articles of a plasticized polyvinyl chloride resin are subjected to the surface treatment by with low temperature plasma so that the undesirable phenomenon of bleeding of the plasticizer on the surface can be effectively prevented when the plasticizer for plasticizing the resin is a compound having at least one aromatic nucleus in a molecule or a combination of two or more of plasticizers including 10% by weight or more of a plasticizer which is a compound having at least one aromatic nucleus in a molecule.
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公开(公告)号：DE2925800A1
公开(公告)日：1980-01-03
申请号：DE2925800
申请日：1979-06-26
Applicant: AGENCY IND SCIENCE TECHN , SHINETSU CHEMICAL CO
Inventor： ASAI MICHIHIKO , SUDA YOSHIO , IMADA KIYOSHI , UENO SUSUMU , NOMURA HIROKAZU , KASHIMA IBARAGI
IPC: C08L27/00 , C08F259/00 , C08F259/04 , C08J7/00 , C08J7/18 , C08K5/54 , C08K5/5425 , C08L1/00 , C08L27/06 , C08L27/22 , C08L33/00 , C08L33/02
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公开(公告)号：FR2516525A1
公开(公告)日：1983-05-20
申请号：FR8219048
申请日：1982-11-15
Applicant: AGENCY IND SCIENCE TECHN
Inventor： ASAI MICHIHIKO , TSUDA KEISHIRO , IMADA KIYOSHI , UENO SUSUMU , NOMURA HIROKAZU , SHIMURA YUKIO
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Patent Agency Ranking
公开(公告)号：DE3043504A1
公开(公告)日：1981-07-02
申请号：DE3043504
申请日：1980-11-18
Applicant: AGENCY IND SCIENCE TECHN , SHINETSU CHEMICAL CO
Inventor： ASAI MICHIHIKO , SUDA YOSHIO , IMADA KIYOSHI , UENO SUSUMU , NOMURA HIROKAZU
IPC: C08J7/00 , B29C35/08 , B29C59/16 , C08F2/48 , C08K5/1515 , C08L27/06 , C08L63/00 , C08K5/15 , C08J7/10
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.
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公开(公告)号：DE2925799A1
公开(公告)日：1980-03-06
申请号：DE2925799
申请日：1979-06-26
Applicant: AGENCY IND SCIENCE TECHN , SHINETSU CHEMICAL CO
Inventor： ASAI MICHIHIKO , SUDA YOSHIO , IMADA KIYOSHI , UENO SUSUMU , NOMURA HIROKAZU , KASHIMA IBARAGI
IPC: C08L27/00 , B29D7/01 , B29D23/00 , C08G18/00 , C08J3/28 , C08J7/00 , C08L1/00 , C08L27/06 , C08L33/00 , C08L33/02 , C08L75/00 , C08L75/04 , H05B7/00 , B29D7/02 , B29D23/04
Abstract: A method for preventing bleeding of plasticizers on the surface of shaped articles of plasticized polyvinyl chloride resins. The method comprises the steps of (a) blending a urethane elastomer with the polyvinyl chloride resin together with the plasticizer and other optional additives prior to fabrication of the polyvinyl chloride resin composition into shaped articles, (b) fabricating the resin composition into desired shaped articles, and (c) subjecting the thus shaped article to a treatment with low temperature plasma of a gas. Carbon monoxide is preferred as the gas for the plasma atmosphere.
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公开(公告)号：DE3040752A1
公开(公告)日：1981-05-21
申请号：DE3040752
申请日：1980-10-29
Applicant: AGENCY IND SCIENCE TECHN , SHINETSU CHEMICAL CO
Inventor： ASAI MICHIHIKO , SUDA YOSHIO , IMADA KIYOSHI , UENO SUSUMU , NOMURA HIROKAZU
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公开(公告)号：FR2468626A1
公开(公告)日：1981-05-08
申请号：FR8023306
申请日：1980-10-31
Applicant: AGENCY IND SCIENCE TECHN
Inventor： ASAI MICHIHIKO , SUDA YOSHIO , IMADA KIYOSHI , UENO SUSUMU , NOMURA HIROKAZU
Abstract: Surface properties of a shaped article of vinyl chloride polymer are modified by mixing at least 0.005 wt.% of U.V. absorber with the polymer. The polymer compsn. is fabricated into a shaped article and irradiated with U.V. light predominantly of wavelength 200 nm or shorter. Exudation of plasticiser is prevented, even during long periods of outdoor use of an article.
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公开(公告)号：FR2455065A1
公开(公告)日：1980-11-21
申请号：FR8009303
申请日：1980-04-25
Applicant: AGENCY IND SCIENCE TECHN
Inventor： ASAI MICHIHIKO , SUDA YOSHIO , IMADA KIYOSHI , UNEO SUSUMU , NOMURA HIROKAZU
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