公开(公告)号：US5468823A

公开(公告)日：1995-11-21

申请号：US977445

申请日：1993-02-12

申请人： Gaetano Guerra ,  Paolo Corradini ,  Claudio DeRosa ,  Mauro Iuliano ,  Leone Oliva ,  Vittorio Petraccone

发明人： Gaetano Guerra ,  Paolo Corradini ,  Claudio DeRosa ,  Mauro Iuliano ,  Leone Oliva ,  Vittorio Petraccone

IPC分类号： B29C55/00 ,  B29C55/02 ,  B29K25/00 ,  C08F12/00 ,  C08F12/12 ,  C08J5/00 ,  C08J5/18 ,  C08L25/00 ,  C08L25/16 ,  D01F6/20 ,  D01F6/22 ,  D02J1/22 ,  C08F112/12

CPC分类号： C08J5/00 ,  C08J5/18 ,  D01F6/20 ,  C08J2325/16

摘要： Semicrystalline manufactured articles made of syndiotactic poly-p-methylstyrene (s-PpMS) in a crystalline form having a high melting point (225.degree. C.), and processes for the preparation thereof. Processes for preparing semicrystalline manufactured articles (semi-finished products, formed articles, fibers, films, etc.) made of s-PpMS in its different crystalline forms by exposure of amorphous manufactured articles to suitable solvents and by subsequent thermomechanical treatments.

摘要翻译： PCT No.PCT / EP92 / 01710 Sec。 371日期：1993年2月12日 102（e）日期1993年2月12日PCT提交1992年7月28日PCT公布。 第WO93 / 03211号公报 日期：1993年2月18日。具有高熔点（225℃）的结晶形式的间同立构聚对甲基苯乙烯（s-PpMS）制造的半结晶制品及其制备方法。 通过将非晶制品暴露于合适的溶剂和随后的热机械处理，制备由不同结晶形式的s-PpMS制成的半晶体制品（半成品，成型制品，纤维，薄膜等）的方法。

公开(公告)号：US4931325A

公开(公告)日：1990-06-05

申请号：US135244

申请日：1987-12-21

申请人： Paolo Corradini ,  Claudio De Rosa ,  Gaetano Guerra ,  Luigi Nicolais ,  Vittorio Petraccone ,  Giancarlo Attalla

发明人： Paolo Corradini ,  Claudio De Rosa ,  Gaetano Guerra ,  Luigi Nicolais ,  Vittorio Petraccone ,  Giancarlo Attalla

IPC分类号： B32B7/02 ,  B29C55/02 ,  B29C55/04 ,  B32B27/32

CPC分类号： B29C55/04 ,  B29C55/023 ,  B29C70/04 ,  B32B27/32 ,  B29K2023/12 ,  Y10S428/91 ,  Y10T428/1352 ,  Y10T428/31913

摘要： This invention relates to composite manufactured articles formed by a set of uniaxially oriented isotatic polypropylene films, having a resistance to delamination of at least 0.4 kg/cm are prepared by heating under pressure a plurality of isotatic polypropylene films superimposed to each other and separated from each other by a non oriented polypropylene films. The oriented films show an orientation of the crystalline phase such as to produce X-ray scattering angles .DELTA..times. equal to or lower than 10.degree.. The non oriented film show an orientation of the crystalline phase such as to produce X-ray scattering angles higher than 20.degree., at a temperature between a temperature equal to or higher than the melting temperature, measured in non restrain conditions, of the non oriented film and a temperature lower than the melting temperature, measured in restrained conditions, of the oriented films.