公开(公告)号：US3944639A

公开(公告)日：1976-03-16

申请号：US427843

申请日：1973-12-26

申请人： Yoshihiro Osajima ,  Syoji Imao ,  Tokuo Shinomiya ,  Sirou Mihara ,  Michisuke Edamatsu

发明人： Yoshihiro Osajima ,  Syoji Imao ,  Tokuo Shinomiya ,  Sirou Mihara ,  Michisuke Edamatsu

IPC分类号： C08J3/12 ,  B01J2/04 ,  C08J3/205 ,  C08J5/02 ,  C08J9/00 ,  C08J9/14 ,  D01D5/11 ,  D21H15/08 ,  D21H15/12 ,  B01J2/02

CPC分类号： D21H15/12 ,  B01J2/04 ,  C08J3/2056 ,  C08J9/0066 ,  C08K3/00 ,  C08K7/00 ,  D01D5/11 ,  D21H5/20 ,  D21H15/08

摘要： A process is disclosed whereby porous flakes usable for making paper-like sheets are produced by melting a 10 to 75 parts by weight of thermoplastic polymer, dispersing 25 to 90 parts by weight of finely divided inorganic particles in a solvent capable of dissolving the polymer in an amount of 80 to 95% based on a total weight of the polymer, the inorganic particles and the solvent, at room temperature or lower to prepare a slurry. At a temperature at which the polymer can be dissolved in the solvent, the polymer melt is mixed with the slurry which has been preliminarily heated to a temperature pertinent for realizing the above-mentioned dissolving temperature when the heated slurry is mixed with the polymer melt, to prepare a uniform dispersion of the inorganic particles in the polymer solution in the solvent and then, the dispersion is spurted from a closed tank through an orifice, into a zone having a temperature and pressure lower than that of the dispersion, whereby the spurted dispersion is converted to composite porous flakes by rapidly evaporating the solvent.

摘要翻译： 公开了一种可用于制造纸状片材的多孔薄片通过将10至75重量份的热塑性聚合物熔融而制得，将25至90重量份的细碎无机颗粒分散在能够将聚合物溶解的溶剂中 在室温或更低温度下，基于聚合物，无机颗粒和溶剂的总重量，为80至95％的量以制备浆料。 在聚合物可以溶解在溶剂中的温度下，将聚合物熔体与预先加热的浆料混合，使得当加热的浆料与聚合物熔体混合时达到上述溶解温度的温度， 制备无机颗粒在溶剂中的聚合物溶液中的均匀分散体，然后将分散体从封闭的罐通过孔口喷射到温度和压力低于分散体的温度和压力的区域中，由此喷射的分散体 通过快速蒸发溶剂而转化成复合多孔薄片。