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1. 发明专利

TR199902153A2 未知
公开(公告)号：TR199902153A2
公开(公告)日：2000-06-21
申请号：TR9902153
申请日：1999-09-09
申请人： CELANESE ACETATE LLC
发明人： FLINT JOHN A , JAFFE MICHAEL J , HAIDER M ISHAQ , DIBIASE JOSEPH J , CORNETTA JOHN E
IPC分类号： D01F6/62 , D01D5/08 , D01F6/60 , D01F6/82 , D01F6/84 , D02J13/00 , B65H54/00
摘要： The present invention discloses and claims a novel process for the formation of high denier as-spun and heat-treated filaments of a thermotropic liquid crystalline polymer. Preferred embodiments include process for the formation of as-spun and heat treated monofilaments of a few wholly aromatic polyesters and polyesteramides. The process involves (a) heating of a thermotropic liquid crystalline polymer to above its melting transition temperature; (b) passing said molten polymer through an extrusion chamber equipped with an extrusion capillary of an aspect ratio of greater than about 1 and less than about 15 to form a filament; and (c) winding the filament at a draw-down ratio of at least about 4. The filaments so formed are of at least 50 denier per filament (dpf) and feature essentially uniform molecular orientation across the cross-section. In a final optional step, the filaments are heat treated in stages to form filaments exhibiting excellent tensile properties. Both as-spun and heat-treated filaments feature remarkably good tensile properties retaining at least 80 to 90 percent of the properties expected of conventional low denier (5 to 10 dpf) filaments.

2. 发明专利

CA2280627A1 PROCESS FOR MAKING HIGH DENIER FILAMENTS OF THERMOTROPIC LIQUID CRYSTALLINE POLYMERS AND COMPOSITIONS THEREOF 未知
公开(公告)号：CA2280627A1
公开(公告)日：2000-03-10
申请号：CA2280627
申请日：1999-08-17
申请人： CELANESE ACETATE LLC
发明人： CORNETTA JOHN EDWARD , FLINT JOHN ANTHONY , JAFFE MICHAEL J , DIBIASE JOSEPH J , HAIDER M ISHAQ
IPC分类号： D01D7/00 , D01D10/02
摘要： The present invention discloses and claims a novel process for the formation of high denier as-spun and heat-treated filaments of a thermotropic liquid crystalline polymer. Preferred embodiments include process for the formation of as-spun and heat treated monofilaments of a few wholly aromatic polyesters and polyesteramides. The process involves (a) heating of a thermotropic liquid crystalline polymer to above its melting transition temperature; (b) passing said molten polymer through an extrusion chamber equipped with an extrusion capillary of an aspect ratio of greater than about 1 and less than about 15 to form a filament; and (c) winding the filament at a draw-down ratio of at least about 4. The filaments so formed are of at least 50 denier per filament (dpf) and feature essentially uniform molecular orientation across the crosssection. In a final optional step, the filaments are heat treated in stages to form filaments exhibiting excellent tensile properties. Both as-spun and heat-treated filaments feature remarkably good tensile properties retaining at least 80 to 90 percent of the properties expected of conventional low denier (5 to 10 dpf) filaments.

3. 发明专利

MY121396A LIQUID CRYSTALLINE POLYMER MONOFILAMENTS HAVING IMPROVED ADHESION CHARACTERISTICS 未知
公开(公告)号：MY121396A
公开(公告)日：2006-01-28
申请号：MYPI9903874
申请日：1999-09-08
申请人： CELANESE ACETATE LLC
发明人： ANDERSON NORMAN S , GIBBON JOHN D , HAIDER M ISHAQ , LEES GERARD
IPC分类号： D01F6/00 , D01F6/62 , C09K19/58 , D06M13/02 , D06M13/148 , D06M13/224 , D06M15/693
摘要： THE INVENTION IS DIRECTED TO LCP MONOFILAMENTS AND YARN MADE THEREFROM WHICH HAVE IMPROVED ADHESION PROPERTIES, SAID MONOFILAMENTS, AND YARN MADE THEREFROM, COMPRISING A LIQUID CRYSTALLINE POLYMER FILAMENT HAVING A FINISH SELECTED FROM THE GROUP CONSISTING OF ESTERS FORMED BETWEEN (A) PENTAERYTHRITOL AND SATURATED POLYOLS OF UP TO 10 CARBON ATOMS AND 2 TO 6 HYDROXYL GROUPS, AND (B) A CARBOXYLIC ACID OF FORMULA CXH2X=1 COOH, WHEREIN X IS FROM 2 TO 20, AND WHEREIN 2 TO 6 OF THE HYDROXY FUNCTIONS ARE CONVERTED TO ESTER FUNCTIONS. IN A PREFERRED EMBODIMENT OF THE INVENTION THE FINISH IS AN ESTER FORMED FROM THE REACTION OF PENTAERYTHRITOL AND A CARBOXYLIC ACID OF FORMULA CXH2X=1 COOH, WHEREIN X IS FROM 2 TO 20, AND PREFERABLY BETWEEN 14 AND 20. THE MOST PREFERRED ESTERS ARE PENTAERYTHRITOL TETRAPELARGONATE AND PENTAERYTHRITOL TETRAISOSTEARATE.

4. 发明专利

MY118225A PROCESS FOR MAKING HIGH DENIER MULTILOBAL FILAMENTS OF THERMOTROPIC LIQUID CRYSTALLINE POLYMERS AND COMPOSITIONS THEREOF 未知
公开(公告)号：MY118225A
公开(公告)日：2004-09-30
申请号：MYPI9903875
申请日：1999-09-08
申请人： CELANESE ACETATE LLC
发明人： FLINT JOHN A , JAFFE MICHAEL J , HAIDER M ISHAQ , DIBIASE JOSEPH J , CORNETTA JOHN E
IPC分类号： B32B27/34 , D01D5/253 , D01F6/60 , D01F6/62 , D01F6/82 , D01F6/84
摘要： THE PRESENT INVENTION DISCLOSES AND CLAIMS A NOVEL PROCESS FOR THE FORMATION OF HIGH DENIER AS-SPUN AND HEAT-TREATED MULTILOBAL FILAMENTS OF A THERMOTROPIC LIQUID CRYSTALLINE POLYMER. PREFERRED EMBODIMENTS INCLUDE PROCESS FOR THE FORMATION OF AS-SPUN AND HEAT TREATED OCTALOBAL MONOFILAMENTS OF A FEW WHOLLY AROMATIC POLYESTERS AND POLYESTERAMIDES. THE PROCESS INVOLVES (A) HEATING OF A THERMOTROPIC LIQUID CRYSTALLINE POLYMER TO ABOVE ITS MELTING TRANSITION TEMPERATURE; (B) PASSING SAID MOLTEN POLYMER THROUGH AN EXTRUSION CHAMBER EQUIPPED WITH AN EXTRUSION CAPILLARY HAVING A MULTILOBAL CROSS-SECTION TO FORM A MULTILOBAL FILAMENT; AND (C) WINDING THE FILAMENT AT A SUITABLE DRAW-DOWN. THE FILAMENTS SO FORMED ARE OF AT LEAST 50 DENIER PER FILAMENT (DPF) AND FEATURE ESSENTIALLY UNIFORM MOLECULAR ORIENTATION ACROSS THEIR CROSS-SECTION. IN A FINAL OPTIONAL STEP, THE FILAMENTS ARE HEAT TREATED IN STAGES TO FORM FILAMENTS EXHIBITING EXCELLENT TENSILE PROPERTIES. BOTH AS-SPUN AND HEAT-TREATED FILAMENTS FEATURE REMARKABLY GOOD TENSILE PROPERTIES COMPARABLE TO THOSE OF ROUND FILAMENTS.MOST IMPORTANTLY, THE MULTILOBAL FILAMENTS OF THIS INVENTION FEATURE MUCH SUPERIOR ADHESION PROPERTIES THAN THE CONVENTIONAL ROUND FILAMENTS.

5. 发明专利

BR9904126A 未知
公开(公告)号：BR9904126A
公开(公告)日：2000-10-03
申请号：BR9904126
申请日：1999-09-10
申请人： CELANESE ACETATE LLC
发明人： FLINT JOHN A , HAIDER M ISHAQ , JAFFE MICHAEL J , DIBIASE JOSEPH J , CORNETTA JOHN E
IPC分类号： D01F6/62 , D01D5/08 , D01F6/60 , D01F6/82 , D01F6/84 , D02J13/00
摘要： The present invention discloses and claims a novel process for the formation of high denier as-spun and heat-treated filaments of a thermotropic liquid crystalline polymer. Preferred embodiments include process for the formation of as-spun and heat treated monofilaments of a few wholly aromatic polyesters and polyesteramides. The process involves (a) heating of a thermotropic liquid crystalline polymer to above its melting transition temperature; (b) passing said molten polymer through an extrusion chamber equipped with an extrusion capillary of an aspect ratio of greater than about 1 and less than about 15 to form a filament; and (c) winding the filament at a draw-down ratio of at least about 4. The filaments so formed are of at least 50 denier per filament (dpf) and feature essentially uniform molecular orientation across the cross-section. In a final optional step, the filaments are heat treated in stages to form filaments exhibiting excellent tensile properties. Both as-spun and heat-treated filaments feature remarkably good tensile properties retaining at least 80 to 90 percent of the properties expected of conventional low denier (5 to 10 dpf) filaments.

6. 发明专利

BR9904637A 未知
公开(公告)号：BR9904637A
公开(公告)日：2000-09-05
申请号：BR9904637
申请日：1999-09-10
申请人： CELANESE ACETATE LLC
发明人： FLINT JOHN A , HAIDER M ISHAQ , JAFFE MICHAEL J , DIBIASE JOSEPH J , CORNETTA JOHN E
IPC分类号： D01D5/084 , D01D10/02 , D01F6/60 , D01F6/62 , D01F6/82 , D01F6/84 , D02J13/00
摘要： The present invention discloses and claims a novel process for the heat treatment of high denier filaments of a thermotropic liquid crystalline polymer. Preferred embodiments include process for the formation of heat treated filaments of a few wholly aromatic polyesters and polyesteramides. The process involves: (a) heating of a thermotropic liquid crystalline polymer to above its melting transition temperature; (b) passing said molten polymer through an extrusion chamber equipped with an extrusion capillary of an aspect ratio of greater than about 1 and less than about 15 to form a filament; (c) winding the filament on to a bobbin at a low tension and draw-down ratio of at least about 4; and (d) heat treating the filament directly on the bobbin at suitable temperature and pressure conditions for a sufficient period of time. The filaments so formed are of at least 50 denier per filament (dpf) and feature essentially uniform molecular orientation across the cross-section. The heat-treated filaments feature remarkably good tensile properties retaining at least 80 to 90 percent of the properties expected of conventional low denier (5 to 10 dpf) filaments.

7. 发明专利

TR9902156A2 未知
公开(公告)号：TR9902156A2
公开(公告)日：2000-04-21
申请号：TR9902156
申请日：1999-09-09
申请人： CELANESE ACETATE LLC
发明人： FLINT JOHN A , JAFFE MICHAEL J , HAIDER M ISHAQ , DIBASE JOSEPH J , CORNETTA JOHN E
IPC分类号： D01D5/084 , D01D10/02 , D01F6/60 , D01F6/62 , D01F6/82 , D01F6/84 , D02J13/00 , D02J
CPC分类号： D01F6/82 , D01D10/02 , D01F6/62 , D01F6/84

8. 发明专利

MY130742A PROCESS FOR DIRECT ON-BOBBIN HEAT TREATING OF HIGH DENIER FILAMENTS OF THERMOTROPIC LIQUID CRYSTALLINE POLYMERS. 未知
公开(公告)号：MY130742A
公开(公告)日：2007-07-31
申请号：MYPI9903876
申请日：1999-09-08
申请人： CELANESE ACETATE LLC
发明人： FLINT JOHN A , JAFFE MICHAEL J , HAIDER M ISHAQ , DIBIASE JOSEPH J , CORNETTA JOHN E
IPC分类号： D01D5/16 , D01D10/02
摘要： THE PRESENT INVENTION DISCLOSES AND CLAIMS A NOVEL PROCESS FOR THE HEAT TREATMENT OF HIGH DENIER FILAMENTS OF A THERMOTROPIC LIQUID CRYSTALLINE POLYMER. PREFERRED EMBODIMENTS INCLUDE PROCESS FOR THE FORMATION OF HEAT TREATED FILAMENTS OF A FEW WHOLLY AROMATIC POLYESTERS AND POLYESTERAMIDES. THE PROCESS INVOLVES: (A) HEATING OF A THERMOTROPIC LIQUID CRYSTALLINE POLYMER TO ABOVE ITS MELTING TRANSITION TEMPERATURE; (B) PASSING SAID MOLTEN POLYMER THROUGH AN EXTRUSION CHAMBER EQUIPPED WITH AN EXTRUSION CAPILLARY OF AN ASPECT RATIO OF GREATER THAN ABOUT 1 AND LESS THAN ABOUT 15 TO FORM A FILAMENT; (C) WINDING THE FILAMENT ON TO A BOBBIN AT A LOW TENSION AND DRAW-DOWN RATIO OF AT LEAST ABOUT 4; AND (D) HEAT TREATING THE FILAMENT DIRECTLY ON THE BOBBIN AT SUITABLE TEMPERATURE AND PRESSURE CONDITIONS FOR A SUFFICIENT PERIOD OF TIME. THE FILAMENTS SO FORMED ARE OF AT LEAST 50 DENIER PER FILAMENT (DPF) AND FEATURE ESSENTIALLY UNIFORM MOLECULAR ORIENTATION ACROSS THE CROSS-SECTION. THE HEAT-TREATED FILAMENTS FEATURE REMARKABLY GOOD TENSILE PROPERTIES RETAINING AT LEAST 80 TO 90 PERCENT OF THE PROPERTIES EXPECTED OF CONVENTIONAL LOW DENIER (5 TO 10 DPF) FILAMENTS.

9. 发明专利

BR9904638A 未知
公开(公告)号：BR9904638A
公开(公告)日：2000-08-29
申请号：BR9904638
申请日：1999-09-10
申请人： CELANESE ACETATE LLC
发明人： FLINT JOHN A , HAIDER M ISHAQ , JAFFE MICHAEL J , DIBIASE JOSEPH J , CORNETTA JOHN E
IPC分类号： D01D5/253 , D01F6/60 , D01F6/62 , D01F6/82 , D01F6/84
摘要： The present invention discloses and claims a novel process for the formation of high denier as-spun and heat-treated multilobal filaments of a thermotropic liquid crystalline polymer. Preferred embodiments include process for the formation of as-spun and heat treated octalobal monofilaments of a few wholly aromatic polyesters and polyesteramides. The process involves (a) heating of a thermotropic liquid crystalline polymer to above its melting transition temperature; (b) passing said molten polymer through an extrusion chamber equipped with an extrusion capillary having a multilobal cross-section to form a multilobal filament; and (c) winding the filament at a suitable draw-down. The filaments so formed are of at least 50 denier per filament (dpf) and feature essentially uniform molecular orientation across their cross-section. In a final optional step, the filaments are heat treated in stages to form filaments exhibiting excellent tensile properties. Both as-spun and heat-treated filaments feature remarkably good tensile properties comparable to those of round filaments. Most importantly, the multilobal filaments of this invention feature much superior adhesion properties than the conventional round filaments.

10. 发明专利

TR9902518A2 未知
公开(公告)号：TR9902518A2
公开(公告)日：2000-07-21
申请号：TR9902518
申请日：1999-10-11
申请人： CELANESE ACETATE LLC
发明人： ANDERSON NORMAN S , GIBBON JOHN D , HAIDER M ISHAQ , LEES GERARD
IPC分类号： D01F6/62 , C09K19/58 , D06M13/02 , D06M13/148 , D06M13/224 , D06M15/693 , D02J
CPC分类号： D06M13/224 , C09K19/58 , C09K2219/01 , D06M15/693 , Y10T428/2933 , Y10T428/2955

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