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公开(公告)号:US4608221A
公开(公告)日:1986-08-26
申请号:US687250
申请日:1984-12-28
CPC分类号: B29C55/00 , B29C47/0021 , B29C47/884 , B29C47/8845 , B29C47/886 , B29C47/888 , B29C47/8895
摘要: A process for reducing draw resonance of a polymeric molten film susceptible to draw resonance under conditions which would cause draw resonance by extruding the film from a die and rapidly cooling said film in a rapid cooling zone containing a pressure roll and chill roll by providing a tensioning device between said die and the nip of said pressure and chill roll, said tensioning device providing a substantially friction free surface with respect to said moving film.
摘要翻译: 一种降低易于拉伸共振的聚合物熔融薄膜的拉伸共振的方法,该条件将通过从模具中挤出薄膜而引起拉伸共振,并在含有压力辊和冷却辊的快速冷却区域中快速冷却所述薄膜, 所述模具和所述压力和冷却辊的辊隙之间的装置,所述张紧装置相对于所述移动膜提供基本上无摩擦的表面。
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公开(公告)号:US4486377A
公开(公告)日:1984-12-04
申请号:US424642
申请日:1982-09-27
IPC分类号: B32B37/00 , B29B7/00 , B29C31/00 , B29C41/26 , B29C43/22 , B29C47/00 , B29C47/88 , B29C55/00 , B29C63/00 , D01D5/12
CPC分类号: B29C55/00 , B29C43/222 , B29C47/0021 , B29C47/8815 , B29C47/8845 , B29C47/886 , B29C47/0057
摘要: A process for producing polymeric film substantially free of draw resonance under conditions and at rates which would otherwise cause draw resonance in polymeric film susceptible to draw resonance wherein a fluid medium is directed against the moving film at a location between the extrusion die and the film take-up zone.
摘要翻译: 一种制备聚合物薄膜的方法,其基本上不受拉伸共振的条件和速率,否则会导致聚合物膜中的拉伸共振,易于拉伸共振,其中流体介质在挤出模头和薄膜采集之间的位置处对准移动薄膜 - 区域。
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公开(公告)号:US08642817B1
公开(公告)日:2014-02-04
申请号:US13734040
申请日:2013-01-04
申请人: Peter J. Lucchesi
发明人: Peter J. Lucchesi
CPC分类号: C07C29/124 , C07C17/10 , C07C31/04 , C07C19/03
摘要: The present invention includes a method for converting methane to methanol by providing a methane source to provide methane; contacting the methane with chlorine; exposing the methane to a light source to form methyl chloride; converting the methyl chloride with H20 to methanol and hydrochloric acid; converting the hydrochloric acid to chlorine; and purifying the methanol.The chemical cycle can be applied to the synthesis of alkane alcohols higher than methanol where appropriate.
摘要翻译: 本发明包括通过提供甲烷源来提供甲烷将甲烷转化成甲醇的方法; 使甲烷与氯接触; 将甲烷暴露于光源以形成甲基氯; 将甲基氯与H 2 O转化为甲醇和盐酸; 将盐酸转化为氯; 并纯化甲醇。 化学循环可适用于合成高于甲醇的烷烃醇。
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