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1.发明授权Process for the manufacture of halogen-containing resin particles of larger bulk density comprising mixing particles of the resin with inorganic salts, treated in a mixture in a gaseous phase and separating the inorganic salt from the product 失效用于制造体积密度较大的含卤素树脂颗粒的方法，包括将树脂颗粒与无机盐混合，以气相混合物处理，并将该无机盐与产物分离
公开(公告)号：US4391763A
公开(公告)日：1983-07-05
申请号：US223947
申请日：1981-01-12
申请人： Kunihiko Ueno , Akiyasu Ishii , Masazi Hukuda , Kazuyuki Nakayama
发明人： Kunihiko Ueno , Akiyasu Ishii , Masazi Hukuda , Kazuyuki Nakayama
CPC分类号： C08J3/12 , C08J2327/00
摘要： This invention relates to a compactingly processing method for the manufacture of spherical particles, having a heavier apparent specific gravity, of halogen-containing ethylene resin. In this method, 100 wt. parts of particles of the resin are mixed with 20-500 wt. parts of one or more of heat-resisting inorganic salts having particle sizes of 0.01-50.mu.. This mixture is subjected to a heat treatment in a gaseous phase at a temperature higher than the melting point of the resin, and then, the once added inorganic salt or salts is/are separated from the heat-treated intermediate products. In this way, the resin particles are subjected to a substantial compacting and size reduction.
摘要翻译： 本发明涉及一种用于制造具有较高表观比重的含卤素乙烯树脂的球形颗粒的紧密加工方法。 在该方法中， 树脂颗粒的份数与20-500重量份混合。 一种或多种具有0.01-50μm粒径的耐热无机盐的部分。 将该混合物在高于树脂熔点的温度下在气相中进行热处理，然后将一次加入的无机盐与热处理的中间产物分离。 以这种方式，树脂颗粒经受实质压实和尺寸减小。
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公开(公告)号：US5042924A
公开(公告)日：1991-08-27
申请号：US490221
申请日：1990-03-08
申请人： Shuji Terasaki , Mitsuru Ohta , Akiyasu Ishii , Yuji Kojima , Akira Tanaka
发明人： Shuji Terasaki , Mitsuru Ohta , Akiyasu Ishii , Yuji Kojima , Akira Tanaka
CPC分类号： C08J5/18 , C08L27/16 , C08J2327/16 , C08L33/12
摘要： An optical phase plate is provided in the form of a drawn and oriented film or sheet, having a composition comprising a vinylidene fluoride resin and a methyl methacrylate resin in a mixing ratio of the former to the latter between about 65/35 and about 85/15 by weight, in which the crystal structure of the vinylidene fluoride resin consists mainly of a .beta.-form and the film or the sheet has dimensional stability and a retardation value R within a range from 500 to 650 nm. The optical phase plate is produced by uniformly kneading and melt-extruding the predetermined PVDF/PMMA mixture into a sheet and subjecting the sheet to drawing and then to heat treatment.
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