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    • 1. 发明授权
    • Process for the preparation of fibers from polymeric materials
    • 从聚合材料制备纤维的方法
    • US4600545A
    • 1986-07-15
    • US22057
    • 1979-03-19
    • Paolo GalliPaolo Parrini
    • Paolo GalliPaolo Parrini
    • D01F6/04D01D5/11D01F6/00D21H13/14D21B1/36
    • D01D5/11D21H13/14D21H5/202
    • Polyolefin fibers, which are suited for at least partially substituting the cellulose fibers in the manufacture of paper, are produced by a process which consists in preparing in a pressure vessel a solution of a polyolefin at a temperature higher than the boiling temperature of the solvent under normal conditions, and under autogenous pressure or a pressure greater than the autogenous pressure, in ejecting said solution under the above stated conditions into a zone of lower pressure, in allowing the ejected solution to expand at least partially in said zone, and in then hitting the at least partially expanded solution with a jet of a high-speed fluid, which is at a temperature lower than that of the solution, and has an angled direction with respect to the direction of ejection of the solution.
    • 适用于至少部分代替纤维素纤维制造纸张的聚烯烃纤维是通过一种方法生产的,该方法包括在压力容器中在高于溶剂沸点温度的温度下制备聚烯烃溶液 在自生压力或大于自体压力的压力下,在将上述条件下将所述溶液喷射到较低压力的区域中,以允许喷射的溶液至少部分地在所述区域中膨胀,然后在打击 所述至少部分膨胀的溶液具有高于溶液的温度的高速流体的射流,并且相对于溶液的喷射方向具有成角度的方向。
    • 9. 发明授权
    • Thermoplastic rubbers and process for preparing same
    • US4340704A
    • 1982-07-20
    • US145360
    • 1980-04-30
    • Italo BorghiSergio FoschiPaolo Galli
    • Italo BorghiSergio FoschiPaolo Galli
    • C08F4/02C08F10/00C08F4/76
    • C08F4/022C08F10/00
    • Thermoplastic rubbers comprising propylene-ethylene copolymers containing from 50% to 90% by weight of propylene and showing, on X-rays examination in the unoriented state, crystallinity of the polypropylene and/or polyethylene type are disclosed.Also disclosed is a method for preparing the thermoplastic rubbers by polymerizing mixtures of propylene and ethylene in the presence of a catalyst obtained by mixing(A) a catalyst-forming component which is (a) an addition and/or substitution product of an electron-donor compound (or a Lewis base) with an Al-trialkyl compound, or (b) the addition reaction product of an electron-donor compound with an Al-alkyl compound containing two or more aluminum atoms bound to each other through an oxygen or nitrogen atom, component (A) being further characterized in that it is prepared by reacting 1.0 mole of an Al-alkyl compound with 0.1-1.0 mole of a Lewis base which is an ester of an organic or inorganic oxygenated acid, a polyamine compound, or any Lewis base other than said esters and polyamine compounds, provided that, in the latter case, component (B) of the catalyst is a complex of a halogenated titanium compound with a polyamine;and(B) a catalyst-forming component which is the product obtained by contacting an addition compound of a di-, tri-, or tetravalent titanium compound and an electron-donor compound with a carrier consisting of or comprising an anhydrous magnesium dihalide, component (B) being further characterized in that, in its X-rays powder spectrum, a halo appears in place of the most intense diffraction line characteristic of the X-rays powder spectrum of the normal, non-activated magnesium dihalide and, furthermore, in that the amount of Ti compound contained in component (B) and expressed as Ti, is less than 0.3 g. per mole of the total amount of the electron-donor compound used in preparing the catalyst and in that the molar ratio of said Ti compound to the Al-alkyl compound is comprised between 0.001 and 0.1.
    • 10. 发明授权
    • Thermoplastic rubbers and process for preparing same
    • US4298721A
    • 1981-11-03
    • US16558
    • 1979-03-01
    • Italo BorghiSergio FoschiPaolo Galli
    • Italo BorghiSergio FoschiPaolo Galli
    • C08F4/00C08F4/02C08F4/60C08F4/64C08F4/649C08F4/651C08F4/654C08F10/00C08F210/00C08F210/02C08F210/16C08F10/06
    • C08F10/00C08F4/022C08F210/06
    • Thermoplastic rubbers comprising propylene-ethylene copolymers containing from 50% to 90% by weight of propylene and showing, on X-rays examination in the unoriented state, crystallinity of the polypropylene and/or polyethylene type are disclosed.Also disclosed is a method for preparing the thermoplastic rubbers by polymerizing mixtures of propylene and ethylene in the presence of a catalyst obtained by reacting.(A) a catalyst-forming component which is (a) an addition and/or substitution product of an electron-donor compound (or a Lewis base) with an Al-trialkyl compound, or (b) the addition reaction product of an electron-donor compound with an Al-alkyl compound containing two or more aluminum atoms bound to each other through an oxygen or nitrogen atom, component (A) being further characterized in that it is prepared by reacting 1.0 mole of a Al-alkyl compound with 0.1-1.0 mole of a Lewis base which is an ester of an organic or inorganic oxygenated acid, a polyamine compound, or any Lewis base other than said esters and polyamine compounds, provided that, in the latter case, component (R) of the catalyst is a complex of a halogenated titanium compound with a polyamine; and(B) a catalyst-forming component which is the product obtained by contacting an addition compound of a di-, tri-, or tetravalent titanium compound and an electron-donor compound with a carrier consisting of or comprising an anhydrous magnesium dihalide, component (B) being further characterized in that, in its X-rays powder spectrum, a halo appears in place of the most intense diffraction line characteristic of the X-rays powder spectrum of the normal, non-activated magnesium dihalide and, furthermore, in that the amount of Ti compound contained in component (B) and expressed as Ti, is less than 0.3 g. per mole of the total amount of the electron-donor compound used in preparing the catalyst and in that the molar ratio of said Ti compound to the Al-alkyl compound is comprised between 0.001 and 0.1.