ATE165386T1 - Verwendung einer polyolefinformmasse zur herstellung von spritzguss-formkörpern - Google Patents

Verwendung einer polyolefinformmasse zur herstellung von spritzguss-formkörpern

Info

Publication number
ATE165386T1
ATE165386T1 AT93114315T AT93114315T ATE165386T1 AT E165386 T1 ATE165386 T1 AT E165386T1 AT 93114315 T AT93114315 T AT 93114315T AT 93114315 T AT93114315 T AT 93114315T AT E165386 T1 ATE165386 T1 AT E165386T1
Authority
AT
Austria
Prior art keywords
production
polyolefin
injection molded
molding compound
molded bodies
Prior art date
Application number
AT93114315T
Other languages
German (de)
English (en)
Inventor
Andreas Dr Winter
Horst Bormuth
Bernd Dr Bachmann
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6467713&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE165386(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Targor Gmbh filed Critical Targor Gmbh
Application granted granted Critical
Publication of ATE165386T1 publication Critical patent/ATE165386T1/de

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10Homopolymers or copolymers of propene
    • C08L23/14Copolymers of propene
    • 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
    • C08F10/00Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F10/04Monomers containing three or four carbon atoms
    • C08F10/06Propene
    • 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
    • C08F210/00Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/02Ethene
    • 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
    • C08F210/00Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/04Monomers containing three or four carbon atoms
    • 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
    • C08F210/00Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/14Monomers containing five or more carbon atoms
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10Homopolymers or copolymers of propene
    • 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
    • C08F210/00Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/04Monomers containing three or four carbon atoms
    • C08F210/06Propene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
AT93114315T 1992-09-11 1993-09-07 Verwendung einer polyolefinformmasse zur herstellung von spritzguss-formkörpern ATE165386T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4230372 1992-09-11

Publications (1)

Publication Number Publication Date
ATE165386T1 true ATE165386T1 (de) 1998-05-15

Family

ID=6467713

Family Applications (1)

Application Number Title Priority Date Filing Date
AT93114315T ATE165386T1 (de) 1992-09-11 1993-09-07 Verwendung einer polyolefinformmasse zur herstellung von spritzguss-formkörpern

Country Status (13)

Country Link
US (1) US5597881A (OSRAM)
EP (1) EP0593888B1 (OSRAM)
JP (1) JP3457030B2 (OSRAM)
KR (1) KR100292211B1 (OSRAM)
AT (1) ATE165386T1 (OSRAM)
AU (1) AU676182B2 (OSRAM)
CA (1) CA2105916A1 (OSRAM)
DE (1) DE59308434D1 (OSRAM)
ES (1) ES2114985T3 (OSRAM)
FI (1) FI933956A7 (OSRAM)
RU (1) RU2167897C2 (OSRAM)
TW (1) TW272985B (OSRAM)
ZA (1) ZA936694B (OSRAM)

Families Citing this family (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW275076B (OSRAM) * 1992-12-02 1996-05-01 Hoechst Ag
WO1995032091A1 (en) * 1994-05-24 1995-11-30 Exxon Chemical Patents Inc. Fibers and fabrics incorporating lower melting propylene polymers
IT1272923B (it) * 1995-01-23 1997-07-01 Spherilene Srl Composti metallocenici,procedimento per la loro preparazione,e loro utilizzo in catalizzatori per la polimerizzazione delle olefine
EP0745639A1 (de) * 1995-05-31 1996-12-04 Hoechst Aktiengesellschaft Biaxial orientierte Polypropylenfolie mit guten optischen Eigenschaften
EP0745637A1 (de) * 1995-05-31 1996-12-04 Hoechst Aktiengesellschaft Biaxial orientierte Polypropylenfolie mit hohem Flächenmodul
EP0745638A1 (de) * 1995-05-31 1996-12-04 Hoechst Aktiengesellschaft Biaxial orientierte Polypropylenfolie mit verbessertem Weiterreisswiderstand
US6130305A (en) * 1996-09-19 2000-10-10 Idemitsu Petrochemical Co., Ltd. Propylenic copolymer and its film
US6649725B2 (en) * 1996-02-05 2003-11-18 Idemitsu Petrochemical Co., Ltd. Propylenic copolymer, and its film
DE19746741A1 (de) 1996-10-30 1998-05-07 Idemitsu Petrochemical Co Propylen-Copolymer und Folie daraus
JP3569739B2 (ja) 1996-11-25 2004-09-29 出光石油化学株式会社 プロピレン系ランダム共重合体の製造方法
DE19738051A1 (de) * 1997-09-01 1999-03-04 Targor Gmbh Spritzgieß-Artikel aus Metallocen-Polypropylen
DE69935591T2 (de) * 1998-06-25 2007-07-05 Idemitsu Kosan Co. Ltd. Propylenpolymer und zusammensetzung die dieses enthält, geformter gegenstand und laminat die dieses enthalten sowie verfahren zur herstellung von polypropylen un dessen zusammensetzung
US6593004B1 (en) 1998-10-14 2003-07-15 Union Carbide Chemicals & Plastics Technology Corporation Extrusion coating composition
CN1234739C (zh) * 1998-12-21 2006-01-04 埃克森化学专利公司 支化半结晶乙烯―丙烯组合物
KR100578390B1 (ko) * 1999-02-02 2006-05-10 삼성토탈 주식회사 가공성과 투명성이 우수한 폴리프로필렌 수지 조성물
CA2430564A1 (en) * 2000-11-30 2002-06-06 Exxonmobil Chemical Patents Inc. Polypropylene for precision injection molding applications
US20040044106A1 (en) * 2001-11-08 2004-03-04 Portnoy Robert C. Polypropylene for precision injection molding applications
US7201284B2 (en) 2001-11-27 2007-04-10 Playtex Products, Inc. Vented container
US7795321B2 (en) * 2004-03-17 2010-09-14 Dow Global Technologies Inc. Rheology modification of interpolymers of ethylene/α-olefins and articles made therefrom
US7863379B2 (en) * 2004-03-17 2011-01-04 Dow Global Technologies Inc. Impact modification of thermoplastics with ethylene/alpha-olefin interpolymers
BRPI0508148B1 (pt) * 2004-03-17 2015-09-01 Dow Global Technologies Inc Interpolímero de etileno em multibloco, derivado reticulado e composição”
US7608668B2 (en) * 2004-03-17 2009-10-27 Dow Global Technologies Inc. Ethylene/α-olefins block interpolymers
AU2005224257B2 (en) * 2004-03-17 2010-08-19 Dow Global Technologies Inc. Catalyst composition comprising shuttling agent for higher olefin multi-block copolymer formation
US7355089B2 (en) * 2004-03-17 2008-04-08 Dow Global Technologies Inc. Compositions of ethylene/α-olefin multi-block interpolymer for elastic films and laminates
US7622529B2 (en) * 2004-03-17 2009-11-24 Dow Global Technologies Inc. Polymer blends from interpolymers of ethylene/alpha-olefin with improved compatibility
US7671106B2 (en) * 2004-03-17 2010-03-02 Dow Global Technologies Inc. Cap liners, closures and gaskets from multi-block polymers
US7579408B2 (en) * 2004-03-17 2009-08-25 Dow Global Technologies Inc. Thermoplastic vulcanizate comprising interpolymers of ethylene/α-olefins
US8816006B2 (en) * 2004-03-17 2014-08-26 Dow Global Technologies Llc Compositions of ethylene/α-olefin multi-block interpolymer suitable for films
US7662881B2 (en) * 2004-03-17 2010-02-16 Dow Global Technologies Inc. Viscosity index improver for lubricant compositions
US7687442B2 (en) * 2004-03-17 2010-03-30 Dow Global Technologies Inc. Low molecular weight ethylene/α-olefin interpolymer as base lubricant oils
US8273838B2 (en) * 2004-03-17 2012-09-25 Dow Global Technologies Llc Propylene/α-olefins block interpolymers
US7582716B2 (en) * 2004-03-17 2009-09-01 Dow Global Technologies Inc. Compositions of ethylene/α-olefin multi-block interpolymer for blown films with high hot tack
US7897689B2 (en) * 2004-03-17 2011-03-01 Dow Global Technologies Inc. Functionalized ethylene/α-olefin interpolymer compositions
US7714071B2 (en) * 2004-03-17 2010-05-11 Dow Global Technologies Inc. Polymer blends from interpolymers of ethylene/α-olefins and flexible molded articles made therefrom
US7666918B2 (en) * 2004-03-17 2010-02-23 Dow Global Technologies, Inc. Foams made from interpolymers of ethylene/α-olefins
US7622179B2 (en) * 2004-03-17 2009-11-24 Dow Global Technologies Inc. Three dimensional random looped structures made from interpolymers of ethylene/α-olefins and uses thereof
US7741397B2 (en) * 2004-03-17 2010-06-22 Dow Global Technologies, Inc. Filled polymer compositions made from interpolymers of ethylene/α-olefins and uses thereof
US7671131B2 (en) 2004-03-17 2010-03-02 Dow Global Technologies Inc. Interpolymers of ethylene/α-olefins blends and profiles and gaskets made therefrom
US7803728B2 (en) * 2004-03-17 2010-09-28 Dow Global Technologies Inc. Fibers made from copolymers of ethylene/α-olefins
KR101413315B1 (ko) * 2005-03-17 2014-06-27 다우 글로벌 테크놀로지스 엘엘씨 에틸렌/알파-올레핀 혼성중합체로부터 제조된 접착제 및표지 조성물
US8084537B2 (en) * 2005-03-17 2011-12-27 Dow Global Technologies Llc Polymer blends from interpolymers of ethylene/α-olefin with improved compatibility
TWI374151B (en) 2005-03-17 2012-10-11 Dow Global Technologies Llc Compositions of ethylene/alpha-olefin multi-block interpolymer for elastic films and laminates
AU2006227347A1 (en) * 2005-03-17 2006-09-28 Dow Global Technologies Inc. Fibers made from copolymers of ethylene/alpha-olefins
US7678341B2 (en) * 2005-07-29 2010-03-16 Exxonmobil Chemical Patents Inc. Loop reactor heat removal
US7098301B1 (en) 2005-07-29 2006-08-29 Exxonmobil Chemical Patents Inc. High pressure filter method of separating polymer solids and unreacted monomer
WO2007035493A2 (en) * 2005-09-15 2007-03-29 Dow Global Technologies Inc. Control of polymer architecture and molecular weight distribution via multi-centered shuttling agent
CN101331163B (zh) * 2005-09-15 2011-03-23 陶氏环球技术公司 经由可聚合的穿梭剂催化的烯烃嵌段共聚物
JP5379479B2 (ja) 2005-10-21 2013-12-25 バーゼル・ポリオレフィン・ゲーエムベーハー 射出成形用のポリプロピレン
AR058496A1 (es) * 2005-10-26 2008-02-06 Dow Global Technologies Inc Articulos elasticos de multiples capas
US8153243B2 (en) * 2005-12-09 2012-04-10 Dow Global Technologies Llc Interpolymers suitable for multilayer films
AR058852A1 (es) 2005-12-09 2008-02-27 Dow Global Technologies Inc Procesos para controlar la distribucion del peso molecular en las composiciones de etileno/alfa olefina
EP2006314B2 (en) 2006-03-29 2019-07-31 Mitsui Chemicals, Inc. Propylene random block copolymer, resin compositions containing the copolymer, and moldings of both
US20080081854A1 (en) * 2006-09-06 2008-04-03 Dow Global Technologies Inc. Fibers and Knit Fabrics Comprising Olefin Block Interpolymers
US7928022B2 (en) * 2006-11-30 2011-04-19 Dow Global Technologies Llc Olefin block compositions for heavy weight stretch fabrics
US7842627B2 (en) 2006-11-30 2010-11-30 Dow Global Technologies Inc. Olefin block compositions for stretch fabrics with wrinkle resistance
WO2008067545A2 (en) * 2006-11-30 2008-06-05 Dow Global Technologies Inc. Fabric comprising elastic fibres of cross-linked ethylene polymer
WO2008089224A1 (en) * 2007-01-16 2008-07-24 Dow Global Technologies Inc. Cone dyed yarns of olefin block compositions
JP2010516908A (ja) * 2007-01-16 2010-05-20 ダウ グローバル テクノロジーズ インコーポレイティド オレフィンブロックポリマーの伸縮性布帛および衣類
CN101595253A (zh) * 2007-01-16 2009-12-02 陶氏环球技术公司 烯烃嵌段组合物的不褪色织物和衣物
JP2010533246A (ja) * 2007-07-09 2010-10-21 ダウ グローバル テクノロジーズ インコーポレイティド 繊維に適するオレフィンブロックインターポリマー組成物
US20090105374A1 (en) * 2007-09-28 2009-04-23 Dow Global Technologies Inc. Thermoplastic olefin composition with improved heat distortion temperature
EP2196483B1 (en) * 2007-09-28 2012-10-24 Mitsui Chemicals, Inc. Polypropylene resin for syringe, syringe obtained by using the same as raw material, and pre-filled syringe preparation
EP2052857A1 (en) * 2007-10-22 2009-04-29 Dow Global Technologies Inc. Multilayer films
WO2009085885A1 (en) * 2007-12-20 2009-07-09 Novartis Ag Method for cast molding contact lenses
JP2009242808A (ja) * 2009-07-16 2009-10-22 Prime Polymer Co Ltd 発泡成形品及び発泡成形方法
EP3647329B1 (en) * 2017-06-30 2024-05-29 Mitsui Chemicals, Inc. Propylene-based polymer, method for preparing same, propylene-based resin composition, and molded body
KR102402638B1 (ko) * 2018-11-02 2022-05-25 주식회사 엘지화학 프로필렌 랜덤 공중합체

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3904469A1 (de) * 1989-02-15 1990-08-16 Hoechst Ag Verfahren zur herstellung eines statistischen propylen-copolymers
DE3907964A1 (de) * 1989-03-11 1990-09-13 Hoechst Ag Verfahren zur herstellung eines syndiotaktischen polyolefins
DE3907965A1 (de) * 1989-03-11 1990-09-13 Hoechst Ag Verfahren zur herstellung eines syndiotaktischen polyolefins
DE3942366A1 (de) * 1989-12-21 1991-06-27 Hoechst Ag Verfahren zur herstellung eines syndiotaktischen propylen-copolymers
DE4005947A1 (de) * 1990-02-26 1991-08-29 Basf Ag Loesliche katalysatorsysteme zur polymerisation von c(pfeil abwaerts)2(pfeil abwaerts)- bis c(pfeil abwaerts)1(pfeil abwaerts)(pfeil abwaerts)0(pfeil abwaerts)-alk-1-enen
ES2071888T3 (es) * 1990-11-12 1995-07-01 Hoechst Ag Bisindenilmetalocenos sustituidos en posicion 2, procedimiento para su preparacion y su utilizacion como catalizadores en la polimerizacion de olefinas.
US5243001A (en) * 1990-11-12 1993-09-07 Hoechst Aktiengesellschaft Process for the preparation of a high molecular weight olefin polymer
US5239022A (en) * 1990-11-12 1993-08-24 Hoechst Aktiengesellschaft Process for the preparation of a syndiotactic polyolefin
DE59107973D1 (de) * 1990-11-12 1996-08-08 Hoechst Ag Verfahren zur Herstellung eines hochmolekularen Olefinpolymers

Also Published As

Publication number Publication date
US5597881A (en) 1997-01-28
EP0593888A1 (de) 1994-04-27
EP0593888B1 (de) 1998-04-22
AU4626193A (en) 1994-03-17
DE59308434D1 (de) 1998-05-28
TW272985B (OSRAM) 1996-03-21
JP3457030B2 (ja) 2003-10-14
ES2114985T3 (es) 1998-06-16
ZA936694B (en) 1994-04-05
AU676182B2 (en) 1997-03-06
RU2167897C2 (ru) 2001-05-27
KR100292211B1 (ko) 2001-10-24
FI933956L (fi) 1994-03-12
CA2105916A1 (en) 1994-03-12
FI933956A0 (fi) 1993-09-09
FI933956A7 (fi) 1994-03-12
KR940007066A (ko) 1994-04-26
JPH06192332A (ja) 1994-07-12

Similar Documents

Publication Publication Date Title
ATE165386T1 (de) Verwendung einer polyolefinformmasse zur herstellung von spritzguss-formkörpern
TW275076B (OSRAM)
ATE6518T1 (de) Verfahren zur herstellung einer propylenharzzusammensetzung und aus dieser zusammensetzung geformte artikel.
CA2381723A1 (en) Copolymers of ethylene with c3-c12 .alpha. olefins
ATE238360T1 (de) Polyolefine
KR970707229A (ko) 성형 조성물, 그의 제조방법, 성형 방법 및 성형품(molding composition, method of preparation, method of molding, and molded articles)
EP0482596A3 (en) Oil repellent polymeric compositions and use thereof for preparing formed articles having surfaces endowed with a high stability to solvents and a high resistance to soiling
FI954437A0 (fi) LLDPE:hen perustuva helposti käsiteltävä polymeerikoostumus
DE59106705D1 (de) Verfahren zur Herstellung von Homopolymerisaten des Propylens mit breitem Molmassenverhältnis.
BR9509196A (pt) Polímero de etileno processo para preparar um polímero de etileno produto polímerico composição polímérica e artigo fabricado
DE68917524D1 (de) Propylen- und Butylen-Polymere enthaltende Zusammensetzungen.
KR910009818A (ko) 내마모성 폴리옥시메틸렌 수지 조성물 및 이의 제조방법
SG44823A1 (en) Polyethylene compositions for injection molding
ATE20897T1 (de) Verfahren zur herstellung eines olefinpolymerisationskatalysators.
ATE137518T1 (de) Formmassen auf basis polyethylen mit einer mittleren molmasse von mindestens 10 hoch 6 g/mol
IE791650L (en) Acrylonitrile polymer fiber
ES448159A1 (es) Mejoras introducidas en un procedimiento para la preparacionde una mezcla de elastomeros de copoliester.
EP0390153A3 (en) Polymer compositions stabilized with polydialkylsiloxanes containing siloxy units having certain defined pendant sterically hindered phenol moieties
ES2114259T3 (es) Masa de moldeo de polietileno.
CA1268876C (en) POLYETHYLENE TEREPHTHALATE RESIN BLEND
ES8203041A1 (es) Procedimiento para la obtencion de cuerpos cristalinos mol- deados de polietilentereftalato
KR930010124A (ko) 폴리(아릴렌설파이드)조성물 및, 이를 사용하는 물품의 성형 방법 및 봉입물품의 제조방법
DE69014387D1 (de) Die Herstellung von mindestens zwei Oxazolidine-Gruppen enthaltenden Silanen.
AUPP610798A0 (en) Improved polymers
KR950014201A (ko) 회전성형용 폴리에틸렌 가교수지 조성물

Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee