BRPI1009542B1 - Método e composição química para melhorar a eficiência de polpa mecânica - Google Patents

Método e composição química para melhorar a eficiência de polpa mecânica Download PDF

Info

Publication number: BRPI1009542B1
Authority: BR; Brazil
Prior art keywords: composition; pulp; mechanical; wood chips; dtpa
Prior art date: 2009-03-09

Application number

BRPI1009542-0A

Other languages

English (en)

Portuguese (pt)

Inventor

Prassad Duggirala

Sergey M. Shevchenko

Sergey M Shevchenko

Original Assignee

Nalco Company

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.)

2009-03-09

Filing date

2010-03-04

Publication date

2020-06-02

2010-03-04 Application filed by Nalco Company filed Critical Nalco Company

2016-03-22 Publication of BRPI1009542A2 publication Critical patent/BRPI1009542A2/pt

2020-06-02 Publication of BRPI1009542B1 publication Critical patent/BRPI1009542B1/pt

Links

238000000034 method Methods 0.000 title claims abstract description 72
239000000126 substance Substances 0.000 title claims abstract description 54
239000000203 mixture Substances 0.000 title claims abstract description 47
229920001131 Pulp (paper) Polymers 0.000 title claims abstract description 31
238000004061 bleaching Methods 0.000 claims abstract description 48
230000008569 process Effects 0.000 claims abstract description 41
238000004537 pulping Methods 0.000 claims abstract description 37
239000002023 wood Substances 0.000 claims abstract description 31
239000000463 material Substances 0.000 claims abstract description 7
-1 for example Substances 0.000 claims abstract description 5
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 178
QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical class OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims description 52
239000011777 magnesium Substances 0.000 claims description 46
229910052749 magnesium Inorganic materials 0.000 claims description 45
VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 36
239000000347 magnesium hydroxide Substances 0.000 claims description 36
229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 36
239000012279 sodium borohydride Substances 0.000 claims description 27
229910000033 sodium borohydride Inorganic materials 0.000 claims description 27
GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical compound [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 claims description 20
239000002738 chelating agent Substances 0.000 claims description 18
JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 claims description 17
150000002978 peroxides Chemical class 0.000 claims description 16
FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 6
239000007864 aqueous solution Substances 0.000 claims description 5
230000007423 decrease Effects 0.000 claims description 5
150000003839 salts Chemical class 0.000 claims description 4
238000002791 soaking Methods 0.000 claims description 4
238000005406 washing Methods 0.000 claims description 4
KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical class NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims description 2
KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical class OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 2
150000001261 hydroxy acids Chemical class 0.000 claims description 2
PTMHPRAIXMAOOB-UHFFFAOYSA-N phosphoramidic acid Chemical class NP(O)(O)=O PTMHPRAIXMAOOB-UHFFFAOYSA-N 0.000 claims description 2
229910001428 transition metal ion Inorganic materials 0.000 claims description 2
XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims 1
238000005507 spraying Methods 0.000 claims 1
230000002195 synergetic effect Effects 0.000 claims 1
239000003513 alkali Substances 0.000 abstract description 11
239000003638 chemical reducing agent Substances 0.000 abstract description 6
239000002932 luster Substances 0.000 abstract description 2
239000002243 precursor Substances 0.000 abstract 1
239000011734 sodium Substances 0.000 description 36
229910052708 sodium Inorganic materials 0.000 description 35
239000000123 paper Substances 0.000 description 21
238000012360 testing method Methods 0.000 description 19
238000007670 refining Methods 0.000 description 16
238000011282 treatment Methods 0.000 description 16
230000002829 reductive effect Effects 0.000 description 11
230000035939 shock Effects 0.000 description 9
230000000694 effects Effects 0.000 description 8
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
239000007844 bleaching agent Substances 0.000 description 5
238000004519 manufacturing process Methods 0.000 description 5
230000020477 pH reduction Effects 0.000 description 5
238000006243 chemical reaction Methods 0.000 description 4
239000002655 kraft paper Substances 0.000 description 4
GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 4
230000002378 acidificating effect Effects 0.000 description 3
230000004913 activation Effects 0.000 description 3
239000002585 base Substances 0.000 description 3
239000000835 fiber Substances 0.000 description 3
229910052739 hydrogen Inorganic materials 0.000 description 3
230000006872 improvement Effects 0.000 description 3
229910052757 nitrogen Inorganic materials 0.000 description 3
230000009467 reduction Effects 0.000 description 3
239000007787 solid Substances 0.000 description 3
239000000243 solution Substances 0.000 description 3
239000004575 stone Substances 0.000 description 3
238000004383 yellowing Methods 0.000 description 3
LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 2
MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
239000002253 acid Substances 0.000 description 2
229910052784 alkaline earth metal Inorganic materials 0.000 description 2
230000001680 brushing effect Effects 0.000 description 2
230000008859 change Effects 0.000 description 2
238000010411 cooking Methods 0.000 description 2
238000005520 cutting process Methods 0.000 description 2
GRWZHXKQBITJKP-UHFFFAOYSA-N dithionous acid Chemical class OS(=O)S(O)=O GRWZHXKQBITJKP-UHFFFAOYSA-N 0.000 description 2
238000005265 energy consumption Methods 0.000 description 2
238000005516 engineering process Methods 0.000 description 2
230000003647 oxidation Effects 0.000 description 2
238000007254 oxidation reaction Methods 0.000 description 2
239000004033 plastic Substances 0.000 description 2
230000008092 positive effect Effects 0.000 description 2
238000002203 pretreatment Methods 0.000 description 2
239000002002 slurry Substances 0.000 description 2
235000010265 sodium sulphite Nutrition 0.000 description 2
239000010935 stainless steel Substances 0.000 description 2
229910001220 stainless steel Inorganic materials 0.000 description 2
LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 2
230000008961 swelling Effects 0.000 description 2
230000008685 targeting Effects 0.000 description 2
RYYXDZDBXNUPOG-UHFFFAOYSA-N 4,5,6,7-tetrahydro-1,3-benzothiazole-2,6-diamine;dihydrochloride Chemical compound Cl.Cl.C1C(N)CCC2=C1SC(N)=N2 RYYXDZDBXNUPOG-UHFFFAOYSA-N 0.000 description 1
102100031260 Acyl-coenzyme A thioesterase THEM4 Human genes 0.000 description 1
101000638510 Homo sapiens Acyl-coenzyme A thioesterase THEM4 Proteins 0.000 description 1
VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
229910000831 Steel Inorganic materials 0.000 description 1
LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical class OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
239000000654 additive Substances 0.000 description 1
230000000996 additive effect Effects 0.000 description 1
229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
150000001342 alkaline earth metals Chemical class 0.000 description 1
230000004075 alteration Effects 0.000 description 1
230000008901 benefit Effects 0.000 description 1
238000005422 blasting Methods 0.000 description 1
XQIMLPCOVYNASM-UHFFFAOYSA-N borole Chemical compound B1C=CC=C1 XQIMLPCOVYNASM-UHFFFAOYSA-N 0.000 description 1
238000005282 brightening Methods 0.000 description 1
229920002678 cellulose Polymers 0.000 description 1
239000001913 cellulose Substances 0.000 description 1
239000003795 chemical substances by application Substances 0.000 description 1
OEYIOHPDSNJKLS-UHFFFAOYSA-N choline Chemical compound C[N+](C)(C)CCO OEYIOHPDSNJKLS-UHFFFAOYSA-N 0.000 description 1
229960001231 choline Drugs 0.000 description 1
238000011161 development Methods 0.000 description 1
238000011156 evaluation Methods 0.000 description 1
238000000227 grinding Methods 0.000 description 1
238000010438 heat treatment Methods 0.000 description 1
239000012535 impurity Substances 0.000 description 1
229920005610 lignin Polymers 0.000 description 1
229910001425 magnesium ion Inorganic materials 0.000 description 1
229910052751 metal Inorganic materials 0.000 description 1
239000002184 metal Substances 0.000 description 1
238000002156 mixing Methods 0.000 description 1
230000007935 neutral effect Effects 0.000 description 1
230000003287 optical effect Effects 0.000 description 1
230000008520 organization Effects 0.000 description 1
230000001590 oxidative effect Effects 0.000 description 1
238000010979 pH adjustment Methods 0.000 description 1
230000021962 pH elevation Effects 0.000 description 1
ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
150000003003 phosphines Chemical class 0.000 description 1
150000004714 phosphonium salts Chemical group 0.000 description 1
238000002360 preparation method Methods 0.000 description 1
238000012545 processing Methods 0.000 description 1
238000009895 reductive bleaching Methods 0.000 description 1
238000011160 research Methods 0.000 description 1
235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
239000007921 spray Substances 0.000 description 1
239000010959 steel Substances 0.000 description 1
238000006467 substitution reaction Methods 0.000 description 1
239000000725 suspension Substances 0.000 description 1
239000011885 synergistic combination Substances 0.000 description 1
230000002277 temperature effect Effects 0.000 description 1
230000000930 thermomechanical effect Effects 0.000 description 1
229910052723 transition metal Inorganic materials 0.000 description 1
239000010876 untreated wood Substances 0.000 description 1

Classifications

- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting compounds
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
- D21B1/021—Pretreatment of the raw materials by chemical or physical means by chemical means
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/64—Alkaline compounds
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/10—Retention agents or drainage improvers
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/32—Bleaching agents
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1026—Other features in bleaching processes
- D21C9/1042—Use of chelating agents
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Chemical & Material Sciences (AREA)
Life Sciences & Earth Sciences (AREA)
Wood Science & Technology (AREA)
Chemical Kinetics & Catalysis (AREA)
General Chemical & Material Sciences (AREA)
Inorganic Chemistry (AREA)
Paper (AREA)

BRPI1009542-0A 2009-03-09 2010-03-04 Método e composição química para melhorar a eficiência de polpa mecânica BRPI1009542B1 (pt)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
US12/400,326		2009-03-09
US12/400,326 US20100224333A1 (en)	2009-03-09	2009-03-09	Method and chemical composition to improve efficiency of mechanical pulp
PCT/US2010/026148 WO2010104725A1 (fr)	2009-03-09	2010-03-04	Procédé et composition chimique pour améliorer le rendement de pâte mécanique

Publications (2)

Publication Number	Publication Date
BRPI1009542A2 BRPI1009542A2 (pt)	2016-03-22
BRPI1009542B1 true BRPI1009542B1 (pt)	2020-06-02

Family

ID=42104550

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BRPI1009542-0A BRPI1009542B1 (pt)	2009-03-09	2010-03-04	Método e composição química para melhorar a eficiência de polpa mecânica

Country Status (9)

Country	Link
US (1)	US20100224333A1 (fr)
EP (1)	EP2406425B1 (fr)
JP (1)	JP5669762B2 (fr)
KR (1)	KR101718557B1 (fr)
CN (1)	CN102348848A (fr)
BR (1)	BRPI1009542B1 (fr)
CA (1)	CA2753944C (fr)
RU (1)	RU2530386C2 (fr)
WO (1)	WO2010104725A1 (fr)

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US20040200586A1 (en) *	2002-07-19	2004-10-14	Martin Herkel	Four stage alkaline peroxide mechanical pulping
US9932709B2 (en) *	2013-03-15	2018-04-03	Ecolab Usa Inc.	Processes and compositions for brightness improvement in paper production
CN105672023A (zh) *	2010-11-16	2016-06-15	王子控股株式会社	纤维素纤维集合体及其制造方法、原纤化纤维素纤维及其制造方法、以及纤维素纤维复合体
EP2924166A1 (fr) *	2014-03-25	2015-09-30	Basf Se	Procédé de fabrication de fibre de bois blanchie
BR102014027199B1 (pt) *	2014-07-14	2022-10-04	Nalco Company	Método para aprimorar a fabricação de polpa de soda ou kraft
WO2017102542A1 (fr) *	2015-12-15	2017-06-22	Metgen Oy	Procédé de fabrication de pâte mécanique à partir de biomasse comprenant une matière lignocellulosique
CN106192509A (zh) *	2016-07-20	2016-12-07	昆明理工大学	硼氢化钠和过氧化氢联合促进硫酸盐法制浆的工艺
AU2018286673B2 (en) *	2017-06-20	2023-04-27	Basf Se	Method of increasing the throughput and/or decreasing energy usage of a pulping process
CN111139681B (zh) *	2019-12-26	2022-09-30	广西金桂浆纸业有限公司	一种化机浆及其制作方法

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SE515708C2 (sv)	2000-02-11	2001-10-01	Mo Och Domsjoe Ab	Blekning av förblekt mekanisk massa med oxiderande blekmedel förstärkt med borhydrid
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US6881299B2 (en) *	2001-05-16	2005-04-19	North American Paper Corporation	Refiner bleaching with magnesium oxide and hydrogen peroxide
NO20032722L (no) *	2002-06-28	2003-12-29	Rohm & Haas	Fremgangsmåte til klaring av pulp med hydrosulfittl degree sning
EP1418269B1 (fr) *	2002-11-05	2009-02-11	Rohm And Haas Company	Procédé de blanchiment des pates mecaniques
US20040256065A1 (en) *	2003-06-18	2004-12-23	Aziz Ahmed	Method for producing corn stalk pulp and paper products from corn stalk pulp
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JP5112291B2 (ja) *	2005-04-08	2013-01-09	ナルコカンパニー	紙材製造のための改良された組成物及びプロセス
US20080105392A1 (en) *	2006-11-03	2008-05-08	Duggirala Prasad Y	Method and composition for improving fiber quality and process efficiency in mechanical pulping

2009
- 2009-03-09 US US12/400,326 patent/US20100224333A1/en not_active Abandoned
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- 2010-03-04 RU RU2011135609/12A patent/RU2530386C2/ru active
- 2010-03-04 CN CN2010800118287A patent/CN102348848A/zh active Pending
- 2010-03-04 EP EP10706889.2A patent/EP2406425B1/fr active Active
- 2010-03-04 WO PCT/US2010/026148 patent/WO2010104725A1/fr not_active Ceased
- 2010-03-04 CA CA2753944A patent/CA2753944C/fr active Active
- 2010-03-04 KR KR1020117023702A patent/KR101718557B1/ko active Active

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BRPI1009542A2 (pt)	2016-03-22
RU2011135609A (ru)	2013-04-20
CA2753944A1 (fr)	2010-09-16
EP2406425A1 (fr)	2012-01-18
KR20110128915A (ko)	2011-11-30
CN102348848A (zh)	2012-02-08
JP2012519785A (ja)	2012-08-30
US20100224333A1 (en)	2010-09-09
RU2530386C2 (ru)	2014-10-10
CA2753944C (fr)	2018-10-02
EP2406425B1 (fr)	2019-10-02
KR101718557B1 (ko)	2017-03-21
WO2010104725A1 (fr)	2010-09-16
JP5669762B2 (ja)	2015-02-18

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2020-04-07	B09A	Decision: intention to grant [chapter 9.1 patent gazette]
2020-06-02	B16A	Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]	Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 02/06/2020, OBSERVADAS AS CONDICOES LEGAIS.

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