[go: up one dir, main page]

BR9006519A - Material polimerico de olefina particulado enxertado;processo para producao de um copolimero de enxerto de um polimero de olefina particulado e produto - Google Patents

Material polimerico de olefina particulado enxertado;processo para producao de um copolimero de enxerto de um polimero de olefina particulado e produto

Info

Publication number
BR9006519A
BR9006519A BR909006519A BR9006519A BR9006519A BR 9006519 A BR9006519 A BR 9006519A BR 909006519 A BR909006519 A BR 909006519A BR 9006519 A BR9006519 A BR 9006519A BR 9006519 A BR9006519 A BR 9006519A
Authority
BR
Brazil
Prior art keywords
graft
product
particulated
polymer
copolimer
Prior art date
Application number
BR909006519A
Other languages
English (en)
Inventor
Paolo Galli
Anthony J Denicola Jr
Jeanini A Smith
Original Assignee
Himont Inc
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
Application filed by Himont Inc filed Critical Himont Inc
Publication of BR9006519A publication Critical patent/BR9006519A/pt

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
    • C08F291/00Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 - C08F289/00
    • C08F291/18Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 - C08F289/00 on to irradiated or oxidised macromolecules
    • C08F291/185The monomer(s) not being present during the irradiation or the oxidation of the macromolecule
    • 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
    • C08F255/00Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
    • C08F255/02Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three 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
    • C08F255/00Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Graft Or Block Polymers (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Materials For Medical Uses (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
BR909006519A 1989-12-21 1990-12-20 Material polimerico de olefina particulado enxertado;processo para producao de um copolimero de enxerto de um polimero de olefina particulado e produto BR9006519A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45422889A 1989-12-21 1989-12-21
US60455390A 1990-10-26 1990-10-26

Publications (1)

Publication Number Publication Date
BR9006519A true BR9006519A (pt) 1991-10-01

Family

ID=27037381

Family Applications (1)

Application Number Title Priority Date Filing Date
BR909006519A BR9006519A (pt) 1989-12-21 1990-12-20 Material polimerico de olefina particulado enxertado;processo para producao de um copolimero de enxerto de um polimero de olefina particulado e produto

Country Status (18)

Country Link
US (2) US5411994A (pt)
EP (1) EP0437808B1 (pt)
JP (2) JP2957709B2 (pt)
KR (1) KR0169730B1 (pt)
CN (1) CN1043145C (pt)
AT (1) ATE118792T1 (pt)
AU (1) AU630534B2 (pt)
BR (1) BR9006519A (pt)
CA (1) CA2031406C (pt)
DE (1) DE69017184T2 (pt)
DK (1) DK0437808T3 (pt)
FI (1) FI906310L (pt)
HU (1) HUT59709A (pt)
IL (1) IL96720A0 (pt)
MY (1) MY104573A (pt)
NO (1) NO905525L (pt)
PT (1) PT96292B (pt)
YU (1) YU239990A (pt)

Families Citing this family (83)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA924249B (en) * 1991-06-21 1993-03-31 Himont Inc Process for grafting vinyl monomers on particulate olefin polymers
US5397842A (en) * 1991-08-20 1995-03-14 Rohm And Haas Company Polyolefin/segmented copolymer blend and process
IT1260495B (it) * 1992-05-29 1996-04-09 Himont Inc Concentrati adatti alla preparazione di poliolefine funzionalizzate e processo di funzionalizzazione mediante detti concentrati
US5247024A (en) * 1992-06-15 1993-09-21 Rohm And Haas Company Segmented copolymers
US5310810A (en) * 1992-06-15 1994-05-10 Rohm And Haas Company Segmented copolymers
US5414049A (en) 1993-06-01 1995-05-09 Howmedica Inc. Non-oxidizing polymeric medical implant
US5374686A (en) * 1993-07-02 1994-12-20 Rohm And Haas Company Process for segmented copolymers
AT403377B (de) 1994-09-26 1998-01-26 Danubia Petrochem Polymere Verfahren zur pfropfung von polyolefinen
CA2166450C (en) * 1995-01-20 2008-03-25 Ronald Salovey Chemically crosslinked ultrahigh molecular weight polyethylene for artificial human joints
US5585434A (en) * 1995-05-31 1996-12-17 Montell North America Inc. Blends of polyolefin graft copolymers and polycarbonate
JPH09102322A (ja) * 1995-07-31 1997-04-15 Imura Zairyo Kaihatsu Kenkyusho:Kk 燃料電池用の固体高分子電解質膜およびその製造方法
EP0787750B1 (de) 1996-02-01 2003-05-14 Borealis GmbH Strukturisomere Poly(alkylethylene)
US8865788B2 (en) * 1996-02-13 2014-10-21 The General Hospital Corporation Radiation and melt treated ultra high molecular weight polyethylene prosthetic devices
US8563623B2 (en) * 1996-02-13 2013-10-22 The General Hospital Corporation Radiation melt treated ultra high molecular weight polyethylene prosthetic devices
US5817707A (en) * 1996-05-06 1998-10-06 Montell North America Inc. Process for making propylene graft copolymers using a redox initiator system
JP2000514481A (ja) 1996-07-09 2000-10-31 ザ オーソピーディック ホスピタル 放射線及び熱処理を用いた低摩耗ポリエチレンの架橋
US5696203A (en) * 1996-07-19 1997-12-09 Montell North America Inc. Process for producing polyolefin grafted copolymers
DE19629427C2 (de) * 1996-07-22 2001-02-15 Borealis Gmbh Schwechat Mannsw Verfahren zur Herstellung von vernetzbaren Polypropylenen
US5859104A (en) * 1996-12-19 1999-01-12 Montell North America Inc. Retarding depolymerization of poly(methyl methacrylate) grafted onto a propylene polymer
US6218023B1 (en) 1997-04-21 2001-04-17 Montell North America, Inc. Co-extruded laminate comprising at least one propylene graft copolymer layer
US6204348B1 (en) * 1997-05-20 2001-03-20 Borealis Gmbh Modified polypropylenes of improved processability
DE19724317C1 (de) * 1997-06-10 1998-08-27 Pcd Polymere Ag Segmentierte Polyolefine
US6140425A (en) * 1997-08-25 2000-10-31 Montell North America Inc. Process for making polypropylene graft copolymers containing anhydride groups
US5863994A (en) * 1997-09-29 1999-01-26 Montell North America Inc. Using nitric oxide to reduce reactor fouling during polypropylene graft copolymerization
US6046273A (en) * 1998-02-27 2000-04-04 Montell North America Inc. Thermal stability of alpha-substituted acrylate graft copolymers
DE19826345C2 (de) * 1998-06-12 2001-09-06 Borealis Gmbh Schwechat Mannsw Verfahren zur Herstellung von Polyolefin-Pfropfcopolymeren
US6252005B1 (en) 1998-08-07 2001-06-26 Montell Technology Company Bv Thermal oxidative stability of acrylic polymers
CZ2001915A3 (cs) 1998-09-15 2001-09-12 Regenesys Technologies Limited Způsob přípravy zesíťěného polymeru roubovaného monomerem
CN1065880C (zh) * 1998-11-02 2001-05-16 华南理工大学 制备吡啶盐型聚合物抗菌材料的辐射接枝法
EP1038893A1 (en) * 1999-03-19 2000-09-27 Fina Research S.A. Production of polypropylene having improved properties
US6306518B1 (en) 1999-05-19 2001-10-23 Montell Technology Company Bv High surface gloss, co-extruded sheets from propylene polymer materials
US6489019B1 (en) 1999-05-19 2002-12-03 Basell Poliolefine Italia S.P.A. High surface gloss, co-extruded sheets from olefin polymer materials
US6337373B1 (en) * 1999-07-30 2002-01-08 Montell Technology Company Bv Polyolefin graft copolymers made with fluorinated monomers
US6624099B1 (en) 1999-12-17 2003-09-23 Basell Poliolefine Italia S.P.A. Glass-reinforced multi-layer sheets from olefin polymer materials
JP2002020205A (ja) * 2000-07-03 2002-01-23 Ebara Corp 殺菌材料
EP1170305A1 (en) * 2000-07-05 2002-01-09 ATOFINA Research Production of polyolefins having improved properties
EP1305349A2 (en) 2000-07-28 2003-05-02 E.I. Dupont De Nemours And Company Grafting of polyolefins
US6667367B1 (en) 2000-10-10 2003-12-23 Basell Poliolefine Italia S.P.A. Directly paintable polypropylene graft copolymers
US6518327B1 (en) 2000-11-02 2003-02-11 Basell Poliolefine Italia S.P.A. Irradiation process for making olefin graft copolymers with low weight side chains
US6444722B1 (en) 2000-11-02 2002-09-03 Basell Poliolefine Italia S.P.A. Making polyolefin graft copolymers with low molecular weight side chains using a polymeric peroxide as an initiator
GB0026756D0 (en) 2000-11-02 2000-12-20 Johnson Matthey Plc Graft copolymers
JP3796220B2 (ja) * 2001-02-22 2006-07-12 独立行政法人 日本原子力研究開発機構 高分子基材のグラフト重合方法
DE60236187D1 (de) * 2001-08-02 2010-06-10 Asahi Kasei Chemicals Corp Sintererzeugnis, harzteilchen und verfahren zu dessen herstellung
US6806319B2 (en) * 2001-08-08 2004-10-19 Basell Polioelfine Italia S.P.A. Retarding the thermal degradation of polymers using unsaturated aliphatic compounds
US6777484B2 (en) 2001-08-08 2004-08-17 Basell Poliolefine Italia S.P.A. Polypropylene graft copolymer/fluorinated polyolefin blends
US20030190472A1 (en) * 2002-04-03 2003-10-09 3D Systems, Inc. Thermoplastic polymer filled pastes
CA2429930C (en) * 2002-06-06 2008-10-14 Howmedica Osteonics Corp. Sequentially cross-linked polyethylene
US7431874B2 (en) 2003-01-16 2008-10-07 Massachusetts General Hospital Methods for making oxidation resistant polymeric material
WO2004078808A2 (en) * 2003-03-04 2004-09-16 Basell Poliolefine Italia S.R.L. Polyolefin grafted poly(vinyl alcohol) and process for producing same
US7371793B2 (en) * 2004-03-15 2008-05-13 Exxonmobil Chemical Patents Inc. Nanocomposite comprising stabilization functionalized thermoplastic polyolefins
WO2005110276A1 (en) * 2004-05-11 2005-11-24 The General Hospital Corporation Dba Massachusetts General Hospital Methods for making oxidation resistant polymeric material
US7060787B2 (en) * 2004-05-14 2006-06-13 Lyondell Chemical Technology, L.P. Extraction of impurities from grafted polyolefins
JP2008501058A (ja) * 2004-05-28 2008-01-17 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 難燃剤がグラフトされたオレフィンポリマーを製造するための方法
FR2881431B1 (fr) * 2005-01-28 2008-12-05 Arkema Sa Greffage d'une poudre de polyamide par irradiation gamma.
JP2006137849A (ja) * 2004-11-12 2006-06-01 Sumitomo Chemical Co Ltd オレフィン重合体組成物パウダーおよびそれから得られる変性オレフィン系重合体
JP2007100070A (ja) * 2005-09-08 2007-04-19 Asahi Kasei Chemicals Corp 変性ポリオレフィンパウダーおよび変性ポリオレフィンパウダーの製造方法
US20080233336A1 (en) * 2006-09-19 2008-09-25 Giannopoulos Rene C Carpet Tiles and Methods Of Making Same
CN100447169C (zh) * 2006-09-27 2008-12-31 浙江大学 一种改性聚丙烯树脂及其制备方法
US20080242803A1 (en) * 2006-12-28 2008-10-02 Industrial Technology Research Institute Polypropylene derivatives and preparation thereof
US20080161498A1 (en) * 2006-12-28 2008-07-03 Industrial Technology Research Institute Polypropylene derivatives and preparation thereof
RU2371448C2 (ru) * 2007-01-09 2009-10-27 Институт сильноточной электроники СО РАН Способ получения поверхностно-привитого полимерного покрытия
WO2009048456A1 (en) * 2007-10-12 2009-04-16 Peak Plastic & Metal Products (International) Limited Wafer container with staggered wall structure
CN101519501B (zh) * 2009-02-24 2011-05-04 上海大学 辐射接枝法制备聚丙烯离子螯合膜的方法
CN101704929B (zh) * 2009-11-23 2013-03-20 中国科学院长春应用化学研究所 一种聚乙烯-聚苯乙烯树脂及其制备方法
US8592501B2 (en) 2010-06-09 2013-11-26 Mannington Mills, Inc. Floor covering composition containing renewable polymer
JP2015155536A (ja) * 2014-01-20 2015-08-27 三井化学株式会社 酸変性ポリオレフィン粒子及びその製造方法
WO2015159980A1 (ja) 2014-04-18 2015-10-22 日本エイアンドエル株式会社 グラフト共重合体及び熱可塑性樹脂組成物
US9920176B2 (en) 2015-06-05 2018-03-20 Exxonmobil Chemical Patents Inc. Single site catalyst supportation
US10077325B2 (en) 2015-06-05 2018-09-18 Exxonmobil Chemical Patents Inc. Silica supports with high aluminoxane loading capability
CN107922537B (zh) 2015-06-05 2021-07-27 埃克森美孚化学专利公司 气相或淤浆相中多相聚合物的制备
US10280233B2 (en) 2015-06-05 2019-05-07 Exxonmobil Chemical Patents Inc. Catalyst systems and methods of making and using the same
US9738779B2 (en) 2015-06-05 2017-08-22 Exxonmobil Chemical Patents Inc. Heterophasic copolymers and sequential polymerization
US10280235B2 (en) 2015-06-05 2019-05-07 Exxonmobil Chemical Patents Inc. Catalyst system containing high surface area supports and sequential polymerization to produce heterophasic polymers
US9809664B2 (en) 2015-06-05 2017-11-07 Exxonmobil Chemical Patents Inc. Bimodal propylene polymers and sequential polymerization
US9725537B2 (en) 2015-06-05 2017-08-08 Exxonmobil Chemical Patents Inc. High activity catalyst supportation
EP3303417A4 (en) * 2015-06-05 2018-08-22 ExxonMobil Chemical Patents Inc. Porous propylene polymers
WO2016196331A1 (en) 2015-06-05 2016-12-08 Exxonmobil Chemical Patents Inc. Supported metallocene catalyst systems for polymerization
EP3303423A1 (en) 2015-06-05 2018-04-11 ExxonMobil Chemical Patents Inc. Single reactor production of polymers in gas or slurry phase
US9725569B2 (en) 2015-06-05 2017-08-08 Exxonmobil Chemical Patents Inc. Porous propylene polymers
US10329360B2 (en) 2015-06-05 2019-06-25 Exxonmobil Chemical Patents Inc. Catalyst system comprising supported alumoxane and unsupported alumoxane particles
US10294316B2 (en) 2015-06-05 2019-05-21 Exxonmobil Chemical Patents Inc. Silica supports with high aluminoxane loading capability
WO2017204830A1 (en) 2016-05-27 2017-11-30 Exxonmobil Chemical Patents, Inc. Metallocene catalyst compositions and polymerization process therewith
CN117321104A (zh) 2021-05-12 2023-12-29 博里利斯股份公司 高熔体强度聚丙烯

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE135499C (pt) *
US3201336A (en) * 1956-07-27 1965-08-17 Ct Nat De La Rech Scient Minis Graft polymerization utilizing ionizing radiation
US2948666A (en) * 1956-11-21 1960-08-09 Gen Electric Irradiation process
NL242470A (pt) * 1958-08-19
US3058950A (en) * 1959-01-07 1962-10-16 Dow Chemical Co Graft copolymers of n-vinyl-3-morpholinone on polyolefin substrates and method of making same
US3322661A (en) * 1962-09-18 1967-05-30 Chisso Corp Graft copolymerization of a vinyl monomer onto a polyolefin with irradiation in the presence of oxygen and a reducing agent
NL300620A (pt) * 1962-12-27
DE1669649B2 (de) * 1966-05-27 1971-05-19 Badische Anilin- & Soda-Fabrik Ag, 6700 Ludwigshafen Verfahren zum herstellen feinteiliger schaumfoermiger olefin polymerisate mit hoher waermestandfestigkeit
GB1208403A (en) * 1968-01-12 1970-10-14 Mitsubishi Petrochemical Co Method of preparing modified polypropylene
CA892730A (en) * 1969-02-21 1972-02-08 Dasgupta Sharda Inducing dyeability in polypropylene by radiation induced grafting
FR2056057A5 (pt) * 1969-08-26 1971-05-14 Raffinage Cie Francaise
JPS5230994B2 (pt) * 1972-01-17 1977-08-11
JPS5940163B2 (ja) * 1977-10-15 1984-09-28 積水化成品工業株式会社 発泡可能な熱可塑性樹脂粒子の製造方法
GB1588625A (en) * 1977-10-25 1981-04-29 Secr Defence Graft copolymers
DD135499A1 (de) * 1978-02-22 1979-05-09 Manfred Baer Verfahren zur strahlenchemischen herstellung von pfropfcopolymeren
SU929648A1 (ru) * 1978-08-15 1982-05-23 Государственный научно-исследовательский и проектный институт по обогащению руд цветных металлов "Казмеханобр" Способ получени полимерных фильтрующих изделий
US4377010A (en) * 1978-11-08 1983-03-22 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Biocompatible material comprising a base polymer bulk graft polymerized with an ethylenically unsaturated carboxylic acid
SU929148A1 (ru) * 1980-11-21 1982-05-23 Предприятие П/Я Р-6707 Электродиализатор дл обессоливани воды
JPS6390523A (ja) * 1986-10-06 1988-04-21 Chisso Corp 改質ポリプロピレン粒子の製造方法
US4897433A (en) * 1986-12-08 1990-01-30 Japan Atomic Energy Research Inst. Process for producing an anti-thrombogenic material by graft polymerization
EP0295821B1 (en) * 1987-06-16 1994-01-05 Nippon Oil And Fats Company, Limited Method for production of graft resin composition
JP2916172B2 (ja) * 1989-08-31 1999-07-05 財団法人石炭利用総合センター 無機質紛末からの有価成分回収法
US5140074A (en) * 1990-01-26 1992-08-18 Himont Incorporated Method of producing olefin polymer graft copolymers

Also Published As

Publication number Publication date
KR910011942A (ko) 1991-08-07
DE69017184T2 (de) 1995-06-29
HUT59709A (en) 1992-06-29
AU630534B2 (en) 1992-10-29
CN1054077A (zh) 1991-08-28
CA2031406A1 (en) 1991-06-22
US5411994A (en) 1995-05-02
EP0437808A2 (en) 1991-07-24
JPH06157683A (ja) 1994-06-07
JP2957709B2 (ja) 1999-10-06
PT96292B (pt) 1998-06-30
FI906310A7 (fi) 1991-06-22
JP3224527B2 (ja) 2001-10-29
PT96292A (pt) 1991-09-30
NO905525L (no) 1991-06-24
ATE118792T1 (de) 1995-03-15
EP0437808B1 (en) 1995-02-22
HU908332D0 (en) 1991-07-29
DE69017184D1 (de) 1995-03-30
FI906310L (fi) 1991-06-22
CA2031406C (en) 2002-05-28
US5652281A (en) 1997-07-29
FI906310A0 (fi) 1990-12-20
MY104573A (en) 1994-04-30
NO905525D0 (no) 1990-12-20
YU239990A (sh) 1992-09-07
IL96720A0 (en) 1991-09-16
EP0437808A3 (en) 1991-10-30
KR0169730B1 (ko) 1999-03-20
CN1043145C (zh) 1999-04-28
DK0437808T3 (da) 1995-06-19
AU6825790A (en) 1991-06-27
JP2000026549A (ja) 2000-01-25

Similar Documents

Publication Publication Date Title
BR9006519A (pt) Material polimerico de olefina particulado enxertado;processo para producao de um copolimero de enxerto de um polimero de olefina particulado e produto
US3961379A (en) Bioimplantable device from crosslinked, swollen, hydrophilic polymers
SG50421A1 (en) Process for the manufacture of a composition comprising a vinylaromatic polymer and a rubber
BR9100336A (pt) Processo para producao de um copolimero de enxerto de poliolefina
AU572314B2 (en) Embossing microstructure with heating
DE69622053D1 (de) Verfahren zum heizen und/oder vernetzen von polymeren und dazugehörende vorrichtung
GB809838A (en) Improvements in grafting polymers or copolymers
DE2360400A1 (de) Herstellungsverfahren fuer kontaktlinsen
YU107776A (en) Process for the polymerization of vinyl chloride in a graft microsuspension
EP0346485A4 (en) Aromatic polymer moldings having modified surface condition and process for their production
FI890525A0 (fi) Menetelmä styreenipohjaisten polymeerien valmistamiseksi
ATE144261T1 (de) Verfahren zum trocknen von aluminoxan und verfahren zum herstellen von polymeren
ITMI912607A1 (it) Procedimento per aggraffare a corpi formati aventi superfici polimeriche monomeri idrofili contenti doppi legami.
US6545283B1 (en) Process of improving the whitening of a polymeric tampon applicator
ATE115012T1 (de) Verfahren zur verbesserung der oberflächenhaftung von polymergegenständen und gegenstände, die so behandelt werden.
TW268012B (pt)
DePalma Jr et al. Surface Modification of PET by One-Step Photografting of Hydrophilic Polymers
Castner et al. Simulation of the irradiation behavior of polyolefins
JPS649448A (en) Pattern forming process

Legal Events

Date Code Title Description
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
TC Change of name
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 20/12/2010