CA2982681C - Phenolic resin composition for use in the polyurethane cold-box and/or no-bake process and corresponding two-component binder systems, uses, and processes - Google Patents

Phenolic resin composition for use in the polyurethane cold-box and/or no-bake process and corresponding two-component binder systems, uses, and processes Download PDF

Info

Publication number
CA2982681C
CA2982681C CA2982681A CA2982681A CA2982681C CA 2982681 C CA2982681 C CA 2982681C CA 2982681 A CA2982681 A CA 2982681A CA 2982681 A CA2982681 A CA 2982681A CA 2982681 C CA2982681 C CA 2982681C
Authority
CA
Canada
Prior art keywords
phenolic resin
resin composition
weight
free formaldehyde
formaldehyde
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
CA2982681A
Other languages
English (en)
French (fr)
Other versions
CA2982681A1 (en
Inventor
Manuel Vargas
Tung-Fai Lo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huettenes Albertus Chemische Werke GmbH
Original Assignee
Huettenes Albertus Chemische Werke 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=52946501&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2982681(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Huettenes Albertus Chemische Werke GmbH filed Critical Huettenes Albertus Chemische Werke GmbH
Publication of CA2982681A1 publication Critical patent/CA2982681A1/en
Application granted granted Critical
Publication of CA2982681C publication Critical patent/CA2982681C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C1/00Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/20Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
    • B22C1/22Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
    • B22C1/2233Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • B22C1/2246Condensation polymers of aldehydes and ketones
    • B22C1/2253Condensation polymers of aldehydes and ketones with phenols
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C1/00Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/20Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
    • B22C1/22Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
    • B22C1/2233Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • B22C1/2273Polyurethanes; Polyisocyanates
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/54Polycondensates of aldehydes
    • C08G18/542Polycondensates of aldehydes with phenols
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72Polyisocyanates or polyisothiocyanates
    • C08G18/74Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G8/00Condensation polymers of aldehydes or ketones with phenols only
    • C08G8/04Condensation polymers of aldehydes or ketones with phenols only of aldehydes
    • C08G8/08Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ
    • C08G8/10Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ with phenol
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/04Condensation polymers of aldehydes or ketones with phenols only
    • C08L61/06Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Mold Materials And Core Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
CA2982681A 2015-04-14 2016-03-21 Phenolic resin composition for use in the polyurethane cold-box and/or no-bake process and corresponding two-component binder systems, uses, and processes Active CA2982681C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP15305547 2015-04-14
EP15305547.0 2015-04-14
PCT/EP2016/056120 WO2016165916A1 (de) 2015-04-14 2016-03-21 Phenolharz-komposition zur verwendung im polyurethan-cold-box- und/oder no-bake-verfahren sowie entsprechende zweikomponenten-bindemittelsysteme, verwendungen und verfahren

Publications (2)

Publication Number Publication Date
CA2982681A1 CA2982681A1 (en) 2016-10-20
CA2982681C true CA2982681C (en) 2022-04-05

Family

ID=52946501

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2982681A Active CA2982681C (en) 2015-04-14 2016-03-21 Phenolic resin composition for use in the polyurethane cold-box and/or no-bake process and corresponding two-component binder systems, uses, and processes

Country Status (11)

Country Link
US (1) US10835949B2 (https=)
EP (1) EP3283541B1 (https=)
JP (1) JP6887595B2 (https=)
KR (1) KR102492617B1 (https=)
CN (1) CN107530766B (https=)
BR (1) BR112017022183B8 (https=)
CA (1) CA2982681C (https=)
EA (1) EA037245B1 (https=)
ES (1) ES2946902T3 (https=)
MX (1) MX2017013161A (https=)
WO (1) WO2016165916A1 (https=)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2017013161A (es) * 2015-04-14 2018-02-21 Huettenes Albertus France Composicion de resina fenolica para uso en el proceso de caja fria y/o autofraguante de poliuretano y correspondientes sistemas aglomerantes de dos componentes, usos y procesos.
DE102016125702A1 (de) * 2016-12-23 2018-06-28 Ask Chemicals Gmbh Komponentenystem zur Herstellung von Kernen und Formen
DE102016125624A1 (de) 2016-12-23 2018-06-28 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Phenolharz zur Verwendung in der Phenolharzkomponente eines Zweikomponenten- Bindemittelsystems
DE102018100694A1 (de) 2018-01-12 2019-07-18 Ask Chemicals Gmbh Formaldehydreduziertes Phenolharzbindemittel
DE102018120993A1 (de) 2018-08-28 2020-03-05 Fritz Winter Eisengiesserei Gmbh & Co. Kg Verfahren zur Begasung von für die Herstellung von Gießkernen in einen Kernkasten eingeschossenem Formstoff mit einem Katalysatorgas
DE102018133239A1 (de) 2018-12-20 2020-06-25 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Isocyanat-Komposition und Bindemittelsystem enthaltend diese Isocyanat-Komposition
DE102019106021A1 (de) * 2019-03-08 2020-09-10 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Formaldehyd-Fänger für Bindemittelsysteme
DE102019116846A1 (de) 2019-06-21 2020-12-24 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Schussdüse mit Spülfunktion
DE102019135605A1 (de) * 2019-12-20 2021-06-24 Ask Chemicals Gmbh Verfahren zum schichtweisen Aufbau von Körpern umfassend feuerfesten Formgrundstoff und Resole, nach diesem Verfahren hergestellte dreidimensionale Körper sowie ein Bindemittel für den 3-dimensionalen Aufbau von Körpern
DE102022110540A1 (de) * 2022-04-29 2023-11-02 tooz technologies GmbH Verfahren zur anpassung des brechungsindex

Family Cites Families (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2212506A (en) 1939-08-15 1940-08-27 Eastman Kodak Co Preparation of methylene dialkyl malonates
FR1056171A (fr) 1950-12-29 1954-02-24 Philips Nv Procédé de préparation de solutions contenant un produit de précondensation de résine synthétique
DE1595206A1 (de) 1964-08-12 1970-04-16 Reichhold Albert Chemie Ag Verfahren zur Herstellung formaldehydarmer,veraetherter Aminotriazinharze
US3485797A (en) 1966-03-14 1969-12-23 Ashland Oil Inc Phenolic resins containing benzylic ether linkages and unsubstituted para positions
US3429848A (en) * 1966-08-01 1969-02-25 Ashland Oil Inc Foundry binder composition comprising benzylic ether resin,polyisocyanate,and tertiary amine
JPS4817755B1 (https=) * 1970-08-12 1973-05-31
US3676392A (en) * 1971-01-26 1972-07-11 Ashland Oil Inc Resin compositions
FR2389409B1 (https=) * 1977-05-02 1980-02-01 Rhone Poulenc Ind
DE2759262C2 (de) 1977-12-31 1983-04-28 Hüttenes-Albertus Chemische Werke GmbH, 4000 Düsseldorf Bindemittelsystem auf Polyurethan- Basis für Formstoff-Mischungen zur Herstellung von Gießformen und Kernen
US4273179A (en) 1978-08-16 1981-06-16 Ashland Oil, Inc. Phenolic resin-polyisocyanate binder systems containing dibasic ester solvents
FR2486835A1 (fr) * 1980-07-18 1982-01-22 Rhone Poulenc Ind Nouvelles compositions pour moules et noyaux en fonderie liees par des silicates
US4481310A (en) * 1981-09-30 1984-11-06 Cl Industries, Inc. Furfuryl esters and resins
EP0084689B1 (en) * 1981-12-21 1985-06-12 Akzo N.V. Process for the manufacture of a foundry core or mould
US4474904A (en) * 1982-01-21 1984-10-02 Lemon Peter H R B Foundry moulds and cores
US4529807A (en) * 1983-06-14 1985-07-16 Cl Industries, Inc. Furfuryl esters and resins
GB8326902D0 (en) 1983-10-07 1983-11-09 Wiggins Teape Group Ltd Removal of formaldehyde from micro-capsules
US4590229A (en) 1984-06-04 1986-05-20 Ashland Oil, Inc. Phenolic resin-polyisocyanate binder systems
US4546124A (en) 1984-10-12 1985-10-08 Acme Resin Corporation Polyurethane binder compositions
US4862948A (en) * 1988-02-24 1989-09-05 Borden, Inc. Phenolic resin adhesive pastes, assemblies prepared therefrom, and processes for preparing cast metal articles using these pastes
US5160503A (en) * 1989-11-13 1992-11-03 West Point Pepperell Water-soluble blends of active methylene compounds and polyhydric alcohols as formaldehyde scavengers
AU655813B2 (en) * 1991-04-05 1995-01-12 Barry William Ryan Improved phenol formaldehyde resins
US5189079A (en) 1991-06-12 1993-02-23 Acme Resin Corp. Low free formaldehyde phenolic polyol formulation
ES2164664T3 (es) * 1991-08-15 2002-03-01 Basf Corp Procedimiento para la produccion de un polimero reticulado mediante la utilizacion de un compuesto beta-dicarbonilico.
US5358748A (en) 1992-05-19 1994-10-25 Schuller International, Inc. Acidic glass fiber binding composition, method of use and curable glass fiber compositions
JP3562878B2 (ja) 1995-07-07 2004-09-08 丸尾カルシウム株式会社 花弁状多孔質ヒドロキシアパタイト微粒子及びその製造方法
DK0771599T4 (da) 1995-11-01 2004-05-17 Huettenes Albertus Bindemiddel-system på polyurethan-basis til stöbe-sands-blandinger til fremstilling af stöbeforme og -kerner
DE19540831C2 (de) 1995-11-02 1998-07-16 Henkel Kgaa Kosmetische und pharmazeutische Emulsionen
US5908914A (en) * 1996-07-17 1999-06-01 Ashland Inc. Benzylic ether phenolic resole resins and their uses
US5795933A (en) * 1996-12-19 1998-08-18 The Dexter Corporation Waterborne coating compositions having ultra low formaldehyde concentration
DE19925115A1 (de) * 1999-06-01 2000-12-07 Huettenes Albertus Bindemittelsystem für Formstoff-Mischungen zur Herstellung von Formen und Kernen
US6365646B1 (en) * 1999-12-08 2002-04-02 Borden Chemical, Inc. Method to improve humidity resistance of phenolic urethane foundry binders
ATE384578T1 (de) 2000-06-30 2008-02-15 Ecole Polytech Carboxylat-enthaltender photokatalytischer körper,seine herstellung und verwendung
DE102004057671B4 (de) 2004-11-29 2007-04-26 Hüttenes-Albertus Chemische Werke GmbH Phenol-Formaldehydharze und Verfahren zu deren Herstellung
WO2008086555A1 (de) 2007-01-19 2008-07-24 Dynea Oy Phenol-formaldehyd-harze, verfahren zu deren herstellung sowie deren verwendung als bindemittel
DE102008007181A1 (de) 2008-02-01 2009-08-06 Ashland-Südchemie-Kernfest GmbH Verwendung von verzweigten Alkandiolcarbonsäurediestern in Gießereibindemitteln auf Polyurethanbasis
FR2929952B1 (fr) * 2008-04-11 2011-02-11 Saint Gobain Isover Composition d'encollage pour fibres minerales et produits resultants
US8975435B2 (en) 2009-05-07 2015-03-10 Optmed, Inc. Methylidene malonate process
FR2948307B1 (fr) * 2009-07-24 2014-07-25 Huettenes Albertus France Procede d'obtention d'un corps forme a partir d'un melange granulaire
FR2952067B1 (fr) 2009-11-03 2012-05-25 Saint Gobain Technical Fabrics Composition filmogene renfermant un agent apte a pieger le formaldehyde
EA201390742A1 (ru) 2010-11-19 2013-10-30 Хюттенес-Альбертус Хемише Верке Гмбх Содержащее сульфоновую кислоту связующее вещество для смеси формовочных веществ для получения форм и стержней
DE102012201971B4 (de) * 2012-02-09 2024-09-12 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Verwendung einer Mischung als Additiv für die Polyisocyanat-Komponente eines Zwei-Komponenten-Bindemittelsystems zur Herstellung eines Polyurethan-Harzes, Polyisocyanat enthaltende Lösung zur Verwendung als Komponente eines Formstoff-Bindemittelsystems, Zwei-Komponenten-Bindemittelsystem zur Herstellung eines Polyurethan-Harzes, Gemisch zur Herstellung eines Kerns oder einer Form für die Gießerei, Form oder Kern für die Gießerei und Verfahren zur Herstellung eines Kerns oder einer Form
FR2995234B1 (fr) * 2012-09-10 2014-12-19 Huettenes Albertus France Procede d'obtention d'un corps pour fonderie a partir d'un melange granulaire comprenant une resine polycondensee contenant des motifs aromatiques et un capteur de formaldehyde
MX2017013161A (es) * 2015-04-14 2018-02-21 Huettenes Albertus France Composicion de resina fenolica para uso en el proceso de caja fria y/o autofraguante de poliuretano y correspondientes sistemas aglomerantes de dos componentes, usos y procesos.

Also Published As

Publication number Publication date
WO2016165916A1 (de) 2016-10-20
ES2946902T3 (es) 2023-07-28
EA201792280A1 (ru) 2018-05-31
JP6887595B2 (ja) 2021-06-16
KR20170137823A (ko) 2017-12-13
CN107530766B (zh) 2019-09-10
US20180126449A1 (en) 2018-05-10
MX2017013161A (es) 2018-02-21
CA2982681A1 (en) 2016-10-20
EP3283541A1 (de) 2018-02-21
EA037245B1 (ru) 2021-02-25
BR112017022183B1 (pt) 2022-08-23
BR112017022183B8 (pt) 2023-05-16
JP2018517047A (ja) 2018-06-28
KR102492617B1 (ko) 2023-01-27
EP3283541B1 (de) 2023-06-07
EP3283541C0 (de) 2023-06-07
CN107530766A (zh) 2018-01-02
BR112017022183A2 (pt) 2018-07-03
US10835949B2 (en) 2020-11-17

Similar Documents

Publication Publication Date Title
CA2982681C (en) Phenolic resin composition for use in the polyurethane cold-box and/or no-bake process and corresponding two-component binder systems, uses, and processes
RU2578603C2 (ru) Связующее на основе полиуретана для получения стержней и литейных форм с применением изоцианатов, содержащих уретониминовую и/или карбодиимидную группу, смесь формовочных материалов, содержащая указанное связующее, и способ применения указанного связующего
EP3737707B1 (de) Formaldehydreduziertes phenolharzbindemittel
MX2013001120A (es) Sistema aglutinante basado en poliuretano para la produccion de nucleos y moldes de fundicion usando formales ciclicos, mezcla de material de moldeo, y su metodo.
BG64942B1 (bg) Свързващо средство за получаване на леярски сърцаи леярски форми на полиуретанова основа
EP3558560B1 (de) Bindemittel auf basis von phenolharzen vom benzylethertyp enthaltend freies phenol und freie hydroxybenzylalkohole
US9000067B2 (en) Binder containing substituted benzenes and naphthalenes for producing cores and molds for metal casting, mold material mixture, and method
JP2013544191A (ja) 型およびコアを製造するための鋳造配合物用の、スルホン酸−含有結合剤
KR101444046B1 (ko) 주형 조형용 점결제 조성물
US6288139B1 (en) Foundry binder system containing an ortho ester and their use
DE102004057671B4 (de) Phenol-Formaldehydharze und Verfahren zu deren Herstellung
US20100252226A1 (en) Alkaline phenolic resole resin compositions and their use
US11981770B2 (en) Formaldehyde scavenger for binder systems
CN117320823A (zh) 铸模造型用粘结剂树脂的制造方法
US6554051B1 (en) Phenolic resin and binding agent for producing moulds and cores according to the phenolic resin-polyurethane method
US10807151B2 (en) Method for reducing metal-mold reaction
JP7189016B2 (ja) アルコール溶剤を含有するポリウレタン結合剤

Legal Events

Date Code Title Description
EEER Examination request

Effective date: 20210319

MPN Maintenance fee for patent paid

Free format text: FEE DESCRIPTION TEXT: MF (PATENT, 9TH ANNIV.) - STANDARD

Year of fee payment: 9

U00 Fee paid

Free format text: ST27 STATUS EVENT CODE: A-4-4-U10-U00-U101 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE REQUEST RECEIVED

Effective date: 20250312

U11 Full renewal or maintenance fee paid

Free format text: ST27 STATUS EVENT CODE: A-4-4-U10-U11-U102 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE FEE PAYMENT DETERMINED COMPLIANT

Effective date: 20250312

Free format text: ST27 STATUS EVENT CODE: A-4-4-U10-U11-U102 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE FEE PAYMENT PAID IN FULL

Effective date: 20250312

MPN Maintenance fee for patent paid

Free format text: FEE DESCRIPTION TEXT: MF (PATENT, 10TH ANNIV.) - STANDARD

Year of fee payment: 10

U00 Fee paid

Free format text: ST27 STATUS EVENT CODE: A-4-4-U10-U00-U101 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE REQUEST RECEIVED

Effective date: 20260309

U11 Full renewal or maintenance fee paid

Free format text: ST27 STATUS EVENT CODE: A-4-4-U10-U11-U102 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE FEE PAYMENT PAID IN FULL

Effective date: 20260309