NO991113L - FremgangsmÕte for fremstilling av olefinpolymerer med forh°yet smeltepunkt - Google Patents

FremgangsmÕte for fremstilling av olefinpolymerer med forh°yet smeltepunkt

Info

Publication number
NO991113L
NO991113L NO991113A NO991113A NO991113L NO 991113 L NO991113 L NO 991113L NO 991113 A NO991113 A NO 991113A NO 991113 A NO991113 A NO 991113A NO 991113 L NO991113 L NO 991113L
Authority
NO
Norway
Prior art keywords
melting point
high melting
olefin polymers
preparing olefin
range
Prior art date
Application number
NO991113A
Other languages
English (en)
Other versions
NO991113D0 (no
Inventor
Carsten Bingel
Markus Goeres
Volker Fraaije
Andreas Winter
Wolfgang Bidell
Heike Gregorius
Roland Hingmann
David Fischer
Ling Carsten S
Original Assignee
Targor Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19713546A external-priority patent/DE19713546A1/de
Priority claimed from DE19757563A external-priority patent/DE19757563A1/de
Priority claimed from DE1997157262 external-priority patent/DE19757262A1/de
Application filed by Targor Gmbh filed Critical Targor Gmbh
Publication of NO991113D0 publication Critical patent/NO991113D0/no
Publication of NO991113L publication Critical patent/NO991113L/no

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F110/00Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F110/04Monomers containing three or four carbon atoms
    • C08F110/06Propene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00Polymerisation catalysts
    • C08F4/42Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62Refractory metals or compounds thereof
    • C08F4/64Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/65912Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an organoaluminium compound
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00Polymerisation catalysts
    • C08F4/42Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62Refractory metals or compounds thereof
    • C08F4/64Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/65916Component covered by group C08F4/64 containing a transition metal-carbon bond supported on a carrier, e.g. silica, MgCl2, polymer
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00Polymerisation catalysts
    • C08F4/42Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62Refractory metals or compounds thereof
    • C08F4/64Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/6592Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
    • C08F4/65922Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not
    • C08F4/65927Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not two cyclopentadienyl rings being mutually bridged

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

Fremgangsmåte for fremstilling av polyolefiner ved polymerisering av olefiner ved trykk i området 0,5-3000 bar og temperaturer i området -60-300°C i nærvær av en metallocen-bærerkatalysator, hvorved det anvendes en metallocen-bærer- katalysator som aktive bestanddeler A) inneholder et metallocenkompleks, B) en metalloceniumionedannende forbindelse, valgt fra gruppen som består av Lewis-syrer og ioniske forbindelser med ikke-koordinerende anioner.
NO991113A 1997-03-07 1999-03-08 FremgangsmÕte for fremstilling av olefinpolymerer med forh°yet smeltepunkt NO991113L (no)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19709402 1997-03-07
DE19713546A DE19713546A1 (de) 1997-04-02 1997-04-02 Verfahren zur Herstellung substituierter Indanone
DE19757563A DE19757563A1 (de) 1997-03-07 1997-12-23 Geträgertes Katalysatorsystem, Verfahren zur Herstellung und seine Verwendung zur Polymerisation von Olefinen
DE1997157262 DE19757262A1 (de) 1997-12-23 1997-12-23 Verfahren zur Herstellung von Olefinpolymerisaten mit erhöhtem Schmelzpunkt
PCT/EP1998/001231 WO1998040419A1 (de) 1997-03-07 1998-03-05 Verfahren zur herstellung von olefinpolymerisaten mit erhöhtem schmelzpunkt

Publications (2)

Publication Number Publication Date
NO991113D0 NO991113D0 (no) 1999-03-08
NO991113L true NO991113L (no) 1999-05-07

Family

ID=27438564

Family Applications (1)

Application Number Title Priority Date Filing Date
NO991113A NO991113L (no) 1997-03-07 1999-03-08 FremgangsmÕte for fremstilling av olefinpolymerer med forh°yet smeltepunkt

Country Status (5)

Country Link
EP (1) EP0931099A1 (no)
AU (1) AU7332398A (no)
CA (1) CA2262493A1 (no)
NO (1) NO991113L (no)
WO (1) WO1998040419A1 (no)

Families Citing this family (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19962910A1 (de) 1999-12-23 2001-07-05 Targor Gmbh Chemische Verbindung, Verfahren zu deren Herstellung und deren Verwendung in Katalysatorsystemen zur Herstellung von Polyolefinen
DE10028432A1 (de) 2000-06-13 2001-12-20 Basell Polyolefine Gmbh Auf calciniertes Hydrotalcit geträgerter Katalysatorfeststoff zur Olefinpolymerisation
US6376408B1 (en) 2000-06-30 2002-04-23 Exxonmobil Chemical Patents Inc. Metallocene compositions
US6376412B1 (en) 2000-06-30 2002-04-23 Exxonmobil Chemical Patents Inc. Metallocene compositions
US6380123B1 (en) 2000-06-30 2002-04-30 Exxonmobil Chemical Patents Inc. Metallocene compositions
WO2002002576A1 (en) * 2000-06-30 2002-01-10 Exxonmobil Chemical Patents Inc. Bridged bis (indenyl) metallocene compounds
US7122498B2 (en) 2000-06-30 2006-10-17 Exxonmobil Chemical Patents Inc. Metallocenes and catalyst compositions derived therefrom
US6376410B1 (en) 2000-06-30 2002-04-23 Exxonmobil Chemical Patents Inc. Metallocene compositions
US6380331B1 (en) 2000-06-30 2002-04-30 Exxonmobil Chemical Patents Inc. Metallocene compositions
US6380334B1 (en) 2000-06-30 2002-04-30 Exxonmobil Chemical Patents Inc. Metallocene compositions
US6870016B1 (en) 2000-06-30 2005-03-22 Exxonmobil Chemical Patents Inc. Polymerization process and polymer composition
US6414095B1 (en) 2000-06-30 2002-07-02 Exxon Mobil Chemical Patents Inc. Metallocene compositions
US6399723B1 (en) 2000-06-30 2002-06-04 Exxonmobil Chemical Patents Inc. Metallocene compositions
US6376411B1 (en) 2000-06-30 2002-04-23 Exxonmobil Chemical Patents Inc. Metallocene compositions
US6380120B1 (en) 2000-06-30 2002-04-30 Exxonmobil Chemical Patents Inc. Metallocene compositions
US6380122B1 (en) 2000-06-30 2002-04-30 Exxonmobil Chemical Patents Inc. Metallocene compositions
US6376409B1 (en) 2000-06-30 2002-04-23 Exxonmobil Chemical Patents Inc. Metallocene compositions
US6376413B1 (en) 2000-06-30 2002-04-23 Exxonmobil Chemical Patents Inc. Metallocene compositions
US6380124B1 (en) 2000-06-30 2002-04-30 Exxonmobil Chemical Patents Inc. Metallocene compositions
US6380330B1 (en) 2000-06-30 2002-04-30 Exxonmobil Chemical Patents Inc. Metallocene compositions
US6376627B1 (en) 2000-06-30 2002-04-23 Exxonmobil Chemical Patents Inc. Metallocene compositions
US6380121B1 (en) 2000-06-30 2002-04-30 Exxonmobil Chemical Patents Inc. Metallocene compositions
US6376407B1 (en) 2000-06-30 2002-04-23 Exxonmobil Chemical Patents Inc. Metallocene compositions
US7241903B2 (en) 2001-06-22 2007-07-10 Basell Polyolefine Gmbh Metallocenes, use in catalyst system for producing olefin polymers
JP2005522406A (ja) 2001-06-29 2005-07-28 エクソンモービル・ケミカル・パテンツ・インク メタロセン及び該メタロセン由来の触媒組成物
DE50212940D1 (de) 2001-09-14 2008-12-04 Basell Polyolefine Gmbh Verfahren zur polymerisation von olefinen
DE10145453A1 (de) 2001-09-14 2003-06-05 Basell Polyolefine Gmbh Monocyclopentadienylkomplexe mit einem kondensierten Heterocyclus
DE10158656A1 (de) 2001-11-30 2003-06-26 Basell Polyolefine Gmbh Organoübergangsmetallverbindung, Biscyclopentadienylligandsystem, Katalysatorsystem und Verfahren zur Herstellung von Polyolefinen
US7157591B2 (en) 2001-12-10 2007-01-02 Exxonmobie Chemical Patents Inc. Metallocenes and catalyst compositions derived therefrom
US7202373B2 (en) 2002-08-22 2007-04-10 Basell Polyolefine Gmbh Monocyclopentadienyl complexes
US7405261B2 (en) 2002-12-06 2008-07-29 Basell Polyolefine Gmbh Organometallic transition metal compound, biscyclopentadienyl ligand system, catalyst system and process for preparing polyolefins
RU2349606C2 (ru) 2002-12-20 2009-03-20 Базелль Полиолефине Гмбх СОПОЛИМЕРЫ ЭТИЛЕНА С α-ОЛЕФИНАМИ
US7507688B2 (en) 2002-12-20 2009-03-24 Basell Polyolefine Gmbh Monocyclopentadienyl complexes
ATE364637T1 (de) 2003-02-07 2007-07-15 Basell Polyolefine Gmbh Polymerisationskatalysatoren, organische übergangsmetallverbindungen, verfahren zur herstellung von polyolefinen
JP2006522189A (ja) 2003-04-03 2006-09-28 バーゼル・ポリオレフィン・ゲーエムベーハー 気相流動床反応器内における有機遷移金属化合物存在下での高分子量ポリオレフィンの製造
JP2006528951A (ja) 2003-05-21 2006-12-28 バーゼル、ポリオレフィン、ゲゼルシャフト、ミット、ベシュレンクテル、ハフツング 三座の窒素含有リガンドを有する遷移金属錯体
US7589223B2 (en) 2003-09-25 2009-09-15 Basell Polyolefine Gmbh Polymerization catalysts, preparation of polyolefins, organotransition metal compounds and ligands
DE10352139A1 (de) 2003-11-04 2005-06-09 Basell Polyolefine Gmbh Organoübergangsmetallverbindung, Biscyclopentadienylligandsystem und Verfahren zur Herstellung von Polyolefinen
DE10358082A1 (de) 2003-12-10 2005-07-14 Basell Polyolefine Gmbh Organübergangsmetallverbindung, Bscyclopentadienyligandsystem, Katalysatorsystem und Hertellung von Polyolefinen
ES2321947T3 (es) 2003-12-16 2009-06-15 Basell Polyolefine Gmbh Complejos de monociclopentadienilo.
US7629464B2 (en) 2003-12-19 2009-12-08 Basell Polyolefine Gmbh Monocyclopentadienyl complexes
DE102004020524A1 (de) 2004-04-26 2005-11-10 Basell Polyolefine Gmbh Polyethylen und Katalysatorzusammensetzung zu dessen Herstellung
DE102004027332A1 (de) 2004-06-04 2005-12-22 Basell Polyolefine Gmbh Übergangsmetallverbindung, Ligandsystem, Katalysatorsystem und Verfahren zur Herstellung von Polyolefinen
DE102004032581A1 (de) 2004-07-05 2006-02-09 Basell Polyolefine Gmbh Polymerisationskatalysatoren, Hauptgruppenkoordinationsverbindungen, Verfahren zur Herstellung von Polyolefinen und Polyolefine
DE102004039877A1 (de) 2004-08-17 2006-02-23 Basell Polyolefine Gmbh Silylhalogenidsubstituierte Cyclopentadienylkomplexe der Gruppe 6
DE102005014395A1 (de) 2005-03-24 2006-09-28 Basell Polyolefine Gmbh Monocyclopentadienylkomplexe
DE102005019393A1 (de) 2005-04-25 2006-10-26 Basell Polyolefine Gmbh Polyethylenformmassen für Spritzgussanwendungen
DE102005035477A1 (de) 2005-07-26 2007-02-01 Basell Polyolefine Gmbh Verfahren zur Steuerung der relativen Aktivität der unterschiedlichen aktiven Zentren von Hybridkatalysatoren
DE102005057559A1 (de) 2005-11-30 2007-05-31 Basell Polyolefine Gmbh Übergangsmetallverbindung, Ligandsystem, Katalysatorsystem und Verfahren zur Herstellung von Polyolefinen
DE102007017903A1 (de) 2007-04-13 2008-10-16 Basell Polyolefine Gmbh Polyethylen und Katalysatorzusammensetzung und Verfahren zu dessen Herstellung
US8207281B2 (en) 2007-12-18 2012-06-26 Basell Polyolefine Gmbh Process for preparing transition metal compounds for olefins polymerization
US8722832B2 (en) 2007-12-19 2014-05-13 Basell Polyolefine Gmbh Ethylene terpolymers
CN101910205B (zh) 2007-12-24 2012-11-21 巴塞尔聚烯烃股份有限公司 用于烯烃聚合的多级方法
MY152524A (en) 2008-02-18 2014-10-15 Basell Polyolefine Gmbh Adhesive polymer composition
US8957158B2 (en) 2008-09-25 2015-02-17 Basell Polyolefine Gmbh Impact resistant LLDPE composition and films made thereof
RU2509782C2 (ru) 2008-09-25 2014-03-20 Базелль Полиолефине Гмбх Ударопрочная композиция лпэнп и полученные из нее пленки
CN102227452B (zh) 2008-12-01 2015-02-04 巴塞尔聚烯烃股份有限公司 乙烯聚合的方法和具有宽的分子量分布和长支链的乙烯聚合物
EP2367854B1 (en) 2008-12-17 2012-11-28 Basell Polyolefine GmbH Catalyst system for olefin polymerization, its production and use
WO2011032917A1 (en) 2009-09-21 2011-03-24 Basell Poliolefine Italia S.R.L. Polymer filament
JP5608241B2 (ja) 2009-11-17 2014-10-15 バーゼル・ポリオレフィン・イタリア・ソチエタ・ア・レスポンサビリタ・リミタータ 改善された加工性を有する軟質ポリオレフィン組成物
JP5695076B2 (ja) 2009-11-24 2015-04-01 バーゼル・ポリオレフィン・イタリア・ソチエタ・ア・レスポンサビリタ・リミタータ 改良したシール性を示すポリオレフィン組成物
US8999875B2 (en) 2010-05-28 2015-04-07 Basell Polyolefine Gmbh Process for preparing a supported catalyst system for olefin polymerization, the catalyst system and its use
WO2012049132A1 (en) 2010-10-15 2012-04-19 Basell Poliolefine Italia S.R.L. Polymer filament
WO2012084774A1 (en) 2010-12-22 2012-06-28 Basell Polyolefine Gmbh Process for controlling the relative activity of active centers of catalyst systems comprising at least one late transition metal catalyst component and at least one ziegler catalyst component
EP2607391A1 (en) 2011-12-21 2013-06-26 Basell Polyolefine GmbH Process for controlling the polymer composition of an ethylene copolymer obtained by a catalyst system comprising a transition metal catalyst component and a Ziegler catalyst component
KR101890545B1 (ko) 2015-05-26 2018-08-21 바셀 폴리올레핀 이탈리아 에스.알.엘 클로져용 폴리올레핀 개스킷
WO2021233875A1 (en) 2020-05-22 2021-11-25 Basell Poliolefine Italia S.R.L. Highly filled and flexible polyolefin composition
WO2022128794A1 (en) 2020-12-15 2022-06-23 Basell Poliolefine Italia S.R.L. Polyolefin composition with high transparency
WO2023104697A1 (en) 2021-12-10 2023-06-15 Basell Poliolefine Italia S.R.L. Polyolefin filament
EP4444944A1 (en) 2021-12-10 2024-10-16 Basell Poliolefine Italia S.r.l. Polyolefin filament

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK0627448T3 (da) * 1990-01-02 2000-05-22 Exxon Chemical Patents Inc Ioniske metallocenkatalysatorer på bærere til olefinpolymerisation
JP2882241B2 (ja) * 1993-06-07 1999-04-12 東ソー株式会社 オレフィン重合用触媒およびオレフィンの重合方法
US5498582A (en) * 1993-12-06 1996-03-12 Mobil Oil Corporation Supported metallocene catalysts for the production of polyolefins
US5939347A (en) * 1995-01-25 1999-08-17 W.R. Grace & Co. -Conn. Supported catalytic activator
EP0727443B1 (en) * 1995-02-20 2001-01-17 Tosoh Corporation Catalyst for olefin polymerization and process for producing olefin polymers
DE19606167A1 (de) * 1996-02-20 1997-08-21 Basf Ag Geträgerte Katalysatorsysteme

Also Published As

Publication number Publication date
CA2262493A1 (en) 1998-09-17
AU7332398A (en) 1998-09-29
EP0931099A1 (de) 1999-07-28
WO1998040419A1 (de) 1998-09-17
NO991113D0 (no) 1999-03-08

Similar Documents

Publication Publication Date Title
NO991113L (no) FremgangsmÕte for fremstilling av olefinpolymerer med forh°yet smeltepunkt
NO944857L (no) Fluorenyl-inneholdende metallocener, fremgangsmåte for fremstilling derav og fremgangsmåte for polymerisering av olefiner ved anvendelse av metallocenene
MY117282A (en) Cycloalkano-indole and-azaindole derivatives
NO944491L (no) Metallocener, fremgangsmåte for fremstilling derav og deres anvendelse som katalysatorer
DE69803907D1 (de) Fungizide 2-Methoxybenzophenone
NO951025L (no) Metallocener og fremgangsmåte til polymerisering av olefin
NO952217L (no) Etylenselektive metallocener med höy aktivitet
CA2245124A1 (en) Fungicidal 2-methoxybenzophenones
PL298988A1 (en) Novel derivatives of acetic acod, pharmaceutical preparation, method of obtaining such derivatives and method of obtaining initial compounds
ATE487746T1 (de) Geträgerter hybridmetallocenkatalysator, herstellungsverfahren dafür und verfahren zur herstellung von polyolefinen damit
SG158099A1 (en) Metallocene catalysts, their synthesis and their use for the polymerization of olefins
CA2416867A1 (en) Cyclopentanoindoles, compositions containing such compounds and methods of treatment
EP1325926A3 (de) Metallocene
WO2004037872A3 (en) Branched crystalline polypropylene
NO301771B1 (no) Halvkrystallinske polyolefinmaterialer basert på propylen med et <alfa>-olefin som komonomer, og en fremgangsmåte for fremstilling av slike
CA2178604A1 (en) Novel imidazole derivative and process for producing the same
WO2001017973A3 (de) Neue herbizide
CA2199913A1 (en) Heat exchange media for the thermal cracking of carbamidic acid esters
NO851932L (no) Fremgangsmaate ved fremstilling av beta-carbolin-3-oxadiazolyl-derivater.
AU7540700A (en) Modified supported catalysts for the polymerization of olefins
NO951879L (no) Polymersammensetning med forbedret termisk oksiderende stabilitet og fremgangsmåte til dens fremstilling
WO1995018821A3 (en) Novel antiandrogenic agents and related pharmaceutical compositions and methods of use
DE50005907D1 (de) Styrolhaltige popcorn-polymerisate, verfahren zu deren herstellung und ihre verwendung
AU2003258599A1 (en) Monocyclopentadienyl complexes
NO20002321L (no) Bifenylderivater som farmasøytiske midler

Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application