ES2196161T3 - Deshalogenacion de poliaminas, curado neutro de rsinas con resistencia a la humedad. - Google Patents

Deshalogenacion de poliaminas, curado neutro de rsinas con resistencia a la humedad.

Info

Publication number
ES2196161T3
ES2196161T3 ES96924576T ES96924576T ES2196161T3 ES 2196161 T3 ES2196161 T3 ES 2196161T3 ES 96924576 T ES96924576 T ES 96924576T ES 96924576 T ES96924576 T ES 96924576T ES 2196161 T3 ES2196161 T3 ES 2196161T3
Authority
ES
Spain
Prior art keywords
approximately
epihalohidrine
polyamine
interval
solution
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.)
Expired - Lifetime
Application number
ES96924576T
Other languages
English (en)
Inventor
Robert Bates
Harvey J Branton
David J Hardman
Gary K Robinson
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.)
Hercules LLC
Original Assignee
Hercules LLC
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 Hercules LLC filed Critical Hercules LLC
Application granted granted Critical
Publication of ES2196161T3 publication Critical patent/ES2196161T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
    • D21H17/56—Polyamines; Polyimines; Polyester-imides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/02—Polyamines
    • C08G73/0206—Polyalkylene(poly)amines
    • C08G73/0213—Preparatory process
    • C08G73/022—Preparatory process from polyamines and epihalohydrins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/02—Polyamines
    • C08G73/028—Polyamidoamines
    • C08G73/0286—Preparatory process from polyamidoamines and epihalohydrins
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P7/00—Preparation of oxygen-containing organic compounds
    • C12P7/02—Preparation of oxygen-containing organic compounds containing a hydroxy group
    • 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
    • D21H21/18—Reinforcing agents
    • D21H21/20—Wet strength agents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S435/00—Chemistry: molecular biology and microbiology
    • Y10S435/8215—Microorganisms
    • Y10S435/822—Microorganisms using bacteria or actinomycetales
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S435/00—Chemistry: molecular biology and microbiology
    • Y10S435/8215—Microorganisms
    • Y10S435/822—Microorganisms using bacteria or actinomycetales
    • Y10S435/843—Corynebacterium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S435/00—Chemistry: molecular biology and microbiology
    • Y10S435/8215—Microorganisms
    • Y10S435/822—Microorganisms using bacteria or actinomycetales
    • Y10S435/848—Escherichia
    • Y10S435/849—Escherichia coli

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Microbiology (AREA)
  • Biotechnology (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Paper (AREA)
  • Polyamides (AREA)
  • Epoxy Resins (AREA)

Abstract

SE DESCRIBE UN PROCEDIMIENTO PARA FABRICAR PRODUCTOS DE RESINA DE POLIAMINA - EPIHALOHIDRINA QUE PRESENTAN NIVELES MUY BAJOS DE EPIHALOHIDRINA O HIDROLIZADOS DE EPIHALOHIDRINA. EL PROCEDIMIENTO INCLUYE: A) PRODUCIR UNA RESINA DE POLIAMINA - EPIHALOHIDRINA EN UNA SOLUCION ACUOSA DE FORMA QUE LA EPIHALOHIDRINA UTILIZADA PARA FABRICAR LA RESINA SE ENCUENTRA EN EXCESO MOLAR EN RELACION A LA FUNCIONALIDAD AMINA SECUNDARIA EN LA RESINA, Y TERMINAR LA REACCION MEDIANTE ENFRIAMIENTO, Y OPCIONALMENTE AJUSTAR EL PH A MENOS DE APROXIMADAMENTE 8,0; B) AJUSTAR EL PH DE LA SOLUCION DE POLIAMINA - EPIHALOHIDRINA A UN INTERVALO DESDE APROXIMADAMENTE 7,5 A 11 Y AL MISMO TIEMPO CALENTAR LA SOLUCION HASTA UN INTERVALO DESDE APROXIMADAMENTE 35 A 50 C, Y MANTENER ESTAS CONDICIONES DURANTE APROXIMADAMENTE 5 A 50 MINUTOS; C) PONER EN CONTACTO LA SOLUCION ACUOSA RESULTANTE DE LA ETAPA B) DE TRATAMIENTO DEL PH CON MICROORGANISMOS SELECCIONADOS A UNA CONCENTRACION CELULAR MAYOR QUE APROXIMADAMENTE 5 X 10 SUP,7} CELULAS/ML, O UNA ENZIMA, A UN INTERVALO DE PH DESDE APROXIMADAMENTE 4 A 8 Y A UN INTERVALO DE TEMPERATURA DE APROXIMADAMENTE 25 A 35 ROXIMADAMENTE 6 A 50 HORAS DE DURACION; Y D) DESACTIVAR O ELIMINAR LAS ENZIMAS O LOS MICROBIOS CALENTANDO HASTA APROXIMADAMENTE 20 TERVALO DESDE APROXIMADAMENTE 2,0 A 5,0 MEDIANTE LA ADICION DE ACIDO. SE PRODUCEN UNOS PRODUCTOS DE POLIAMINA EPIHALOHIDRINA QUE PRESENTAN UNOS NIVELES MUY BAJOS DE HIDROLIZADOS DE EPIHALOHIDRINA RESIDUALES CON UNA EFICACIA DE RESISTENCIA MUY ELEVADA, QUE RESULTAN UTILES EN LA FABRICACION DE PAPEL.
ES96924576T 1995-06-07 1996-06-05 Deshalogenacion de poliaminas, curado neutro de rsinas con resistencia a la humedad. Expired - Lifetime ES2196161T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/482,398 US5972691A (en) 1995-06-07 1995-06-07 Dehalogenation of polyamine, neutral curing wet strength resins

Publications (1)

Publication Number Publication Date
ES2196161T3 true ES2196161T3 (es) 2003-12-16

Family

ID=23915909

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96924576T Expired - Lifetime ES2196161T3 (es) 1995-06-07 1996-06-05 Deshalogenacion de poliaminas, curado neutro de rsinas con resistencia a la humedad.

Country Status (9)

Country Link
US (1) US5972691A (es)
EP (1) EP0835322B1 (es)
JP (1) JPH11508765A (es)
AU (1) AU706574B2 (es)
CA (1) CA2222572C (es)
DE (1) DE69628297T2 (es)
ES (1) ES2196161T3 (es)
WO (1) WO1996040967A1 (es)
ZA (1) ZA964868B (es)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6429267B1 (en) 1997-12-31 2002-08-06 Hercules Incorporated Process to reduce the AOX level of wet strength resins by treatment with base
AU2004208655B2 (en) * 1999-06-11 2006-12-21 Solenis Technologies Cayman, L.P. Reduced byproduct polyamine-epihalohydrin resins
ES2391785T3 (es) * 1999-06-11 2012-11-29 Hercules Incorporated Proceso para preparar resinas de poliamina-epihalohidrina con contenido reducido de subproductos
WO2002009872A2 (en) * 2000-07-31 2002-02-07 Hercules Incorporated Biodehalogenating cultures and production thereof
AU3066402A (en) * 2000-12-09 2002-07-01 Hercules Inc Reduced byproduct high solids polyamine-epihalohydrin compositions
US7081512B2 (en) * 2003-05-21 2006-07-25 Hercules Incorporated Treatment of resins to lower levels of CPD-producing species and improve gelation stability
US7932349B2 (en) * 2006-09-18 2011-04-26 Hercules Incorporated Membrane separation process for removing residuals polyamine-epihalohydrin resins
MX354457B (es) 2011-04-21 2018-03-06 Ecolab Usa Inc Resinas de poliamidoamina-epihalohidrina, método de fabricación y usos de las mismas.
US9388533B2 (en) 2011-08-25 2016-07-12 Solenis Technologies, L.P. Method for increasing the advantages of strength aids in the production of paper and paperboard
ES2401284B1 (es) 2011-08-26 2014-02-19 Viscofan, S.A. Composición de plisado y aplicaciones de la misma.
EP2761083B1 (en) 2011-09-30 2017-06-28 Kemira OYJ Paper and methods of making paper
CA2886043A1 (en) * 2012-09-26 2014-04-03 Kemira Oyj Absorbent materials, products including absorbent materials, compositions, and methods of making absorbent materials
ES2623056T3 (es) 2012-12-06 2017-07-10 Kemira Oyj Composiciones usadas en papel y métodos de fabricar papel
AU2015301636B2 (en) 2014-08-13 2017-08-31 Solenis Technologies, L.P. Process to improve performance of wet-strength resins through base activation
US11098453B2 (en) 2019-05-03 2021-08-24 First Quality Tissue, Llc Absorbent structures with high absorbency and low basis weight

Family Cites Families (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL110447C (es) * 1957-09-05
US2926154A (en) * 1957-09-05 1960-02-23 Hercules Powder Co Ltd Cationic thermosetting polyamide-epichlorohydrin resins and process of making same
US3197427A (en) * 1963-07-12 1965-07-27 Hercules Powder Co Ltd Cationic thermosetting polyamide-epichlorohydrin resins of improved stability and process of making same
US3332901A (en) * 1966-06-16 1967-07-25 Hercules Inc Cationic water-soluble polyamide-epichlorohydrin resins and method of preparing same
US3779866A (en) * 1972-04-07 1973-12-18 Bioteknike Int Inc Microbial degradation of polychlorinated biphenyls
US3891589A (en) * 1972-12-21 1975-06-24 Nat Starch Chem Corp Process for preparing stable high solids aqueous solution of cationic thermosetting resins
SU635048A1 (ru) * 1976-04-12 1978-11-30 Предприятие П/Я В-2304 Способ двухступенчатой очистки сточных вод производства эпоксидных смол
US4240935A (en) * 1978-12-22 1980-12-23 Hercules Incorporated Ketene dimer paper sizing compositions
US4323649A (en) * 1979-03-09 1982-04-06 Imperial Chemical Industries Limited Biotransformations using methane-utilizing bacteria
FR2465220A1 (fr) * 1979-09-12 1981-03-20 Commissariat Energie Atomique Dispositif d'identification d'objets situes sur une surface et de determination de parametres desdits objets
US4493895A (en) * 1981-09-24 1985-01-15 Occidental Chemical Corporation Microbial degradation of obnoxious organic wastes into innocuous materials
US4477570A (en) * 1981-09-24 1984-10-16 Occidental Chemical Corporation Microbial degradation of obnoxious organic wastes into innocucous materials
US4452894A (en) * 1981-10-09 1984-06-05 Microlife Genetics, Inc. Pseudomonas compositions
US4490471A (en) * 1981-12-11 1984-12-25 Ciba-Geigy Corporation Microorganisms of the genus Pseudomonas and process for degrading compounds which contain methyl groups in aqueous solutions
US4535061A (en) * 1981-12-28 1985-08-13 University Of Illinois Foundation Bacteria capable of dissimilation of environmentally persistent chemical compounds
US4511657A (en) * 1982-05-25 1985-04-16 Occidental Chemical Corporation Treatment of obnoxious chemical wastes
US4447541A (en) * 1983-06-06 1984-05-08 Galson Research Corporation Methods for decontaminating soil
US4664805A (en) * 1985-07-23 1987-05-12 Regents Of The University Of California Analog enrichment decontamination process
CH668163A5 (fr) * 1985-11-25 1988-12-15 Nestle Sa Procede de fabrication d'un condiment.
US4806482A (en) * 1986-03-21 1989-02-21 The B.F. Goodrich Company Microbial degradation of hydrocarbons
US4833086A (en) * 1986-03-21 1989-05-23 The B F Goodrich Company Microbial degradation of hydrocarbons
US4761376A (en) * 1986-07-03 1988-08-02 Occidental Chemical Corporation Facultatively anaerobic microorganism for degrading toxic waste materials
US4803166A (en) * 1986-07-03 1989-02-07 Occidental Chemical Corporation Microorganism for degrading toxic waste materials
GB8618351D0 (en) * 1986-07-28 1986-09-03 Unilever Plc Lactones
US4816403A (en) * 1986-08-04 1989-03-28 Louisiana State University Detoxification of chlorinated aromatic compounds by organism NRRL B-18086
US4804629A (en) * 1986-08-04 1989-02-14 Louisiana State University Detoxification of chlorinated aromatic compounds by organism NRRL B-18087
IL83345A0 (en) * 1986-08-11 1987-12-31 Univ Texas Microbial enzymatic transformations of chrystanthemol,lavandulol and analogous alcohols to acids
DE3708544A1 (de) * 1987-03-17 1988-09-29 Bayer Ag Stickstoffhaltige, wasserloesliche verbindungen
US4959315A (en) * 1987-04-30 1990-09-25 The United States Of America As Represented By The Administrator Of The Environmental Protection Agency Biodegradation of chloroethylene compounds
DE3808741A1 (de) * 1988-03-16 1989-09-28 Bayer Ag Polyamidamin-harze
US4853334A (en) * 1988-04-27 1989-08-01 Microlife Technics, Inc. Method for the degradation of volatile chlorinated aliphatic hydrocarbons using pseudomonas fluorescens
DE3815123A1 (de) * 1988-05-04 1989-11-16 Bayer Ag Verfahren zum biologischen abbau von komplexen, langsam abbaubaren organischen abwasserinhaltsstoffen
DE3822490A1 (de) * 1988-07-02 1990-01-04 Hoechst Ag Waessrige loesungen von polyamidoamin-epichlorhyrin-harzen, verfahren zu ihrer herstellung und ihre verwendung
US4925802A (en) * 1988-12-21 1990-05-15 Ecova Corporation Method for stimulating biodegradation of halogenated aliphatic hydrocarbons
JP2969636B2 (ja) * 1988-12-23 1999-11-02 住友化学工業株式会社 陽イオン性熱硬化性樹脂水溶液の製造方法
US5024949A (en) * 1989-02-17 1991-06-18 Biotrol, Inc. Aerobic bacterial remediation of aliphatic chlorinated hydrocarbon contamination
US5171795A (en) * 1990-08-01 1992-12-15 Hercules Incorporated Process for the production of improved polyaminopolyamide epichlorohydrin resins
CA2066378C (en) * 1991-04-24 2000-09-19 David J. Hardman Dehalogenation of organohalogen-containing compounds
SK279996B6 (sk) * 1991-06-19 1999-06-11 Akzo Nobel N. V. Vodorozpustná živica na báze epihalogénhydrínu obs
US5256727A (en) * 1992-04-30 1993-10-26 Georgia-Pacific Resins, Inc. Resins with reduced epichlorohydrin hydrolyzates
US5330619A (en) * 1993-02-01 1994-07-19 The Mead Corporation Method for repulping fibrous materials containing crosslinked polyamide wet strength agents with enzyme

Also Published As

Publication number Publication date
WO1996040967A1 (en) 1996-12-19
DE69628297T2 (de) 2004-04-01
CA2222572C (en) 2005-06-14
EP0835322B1 (en) 2003-05-21
EP0835322A1 (en) 1998-04-15
CA2222572A1 (en) 1996-12-19
ZA964868B (en) 1997-01-08
JPH11508765A (ja) 1999-08-03
US5972691A (en) 1999-10-26
EP0835322A4 (en) 1998-09-30
AU706574B2 (en) 1999-06-17
AU6499396A (en) 1996-12-30
DE69628297D1 (de) 2003-06-26

Similar Documents

Publication Publication Date Title
ES2196161T3 (es) Deshalogenacion de poliaminas, curado neutro de rsinas con resistencia a la humedad.
ES540919A0 (es) Procedimiento para la inactivacion de germenes patogenos filtrables,capaces de reproducirse,en productos sanguineos
RU2000117677A (ru) Бактерия escherichia coli-продуцент l-аргинина и способ получения l-аргинина
AU630809B2 (en) Process for enhancing the dewaterability of waste sludge from microbiological digestion
KR880011330A (ko) 말토테트라오스 생성 아미라아제와 그의 제조방법 및 용도
Taguchi et al. Heat-Stable Extracellular Proteolytic Enzyme Produced by Thermus caldophilus Strain GK24, an Extremely Thermophiic Bacterium
UY25097A1 (es) Proceso para la produccion de heparina
DK161055C (da) Fremgangsmaade til enzymatisk rensning og desinfektion af kontaktlinser
ATE314810T1 (de) Kalziumreaktive pektinzusammensetzung
ES8402550A1 (es) Procedimiento para la purificacion microbiologica de soluciones acuosas.
HUP0102098A2 (hu) Eljárás gél előállítására polivinilalkoholból, és az eljárás szerint előállított, nagy mechanikai stabilitású gél
DK655187A (da) Fremgangsmaade til behandling af majsstoebevand
Lee et al. Similarities in the action patterns of exopolygalacturonate lyase and pectinesterase from Clostridium multifermentans
ES457925A1 (es) Un procedimiento para la preparacion de una enzima alfa-ami-lasa estable al calor y a los acidos.
CA1282723C (en) Method for increasing the milk clotting activity of thermolabile rhizomucor pussillus rennet
JPS5554855A (en) Method of sterilizing food
AU7146796A (en) A method and a device for treating a liquid egg product
AU2002366266A1 (en) Method for the inactivation of amylase in the presence of protease
CA2265730A1 (en) Process for disinfecting organic waste sludge
KR910008138A (ko) 효소법에 의한 l-세린의 제조법
JPS5545307A (en) Preparation of l-tryptophan
Havelaar Sludge Disinfection- An Overview of Methods and Their Effectiveness
JPS5248261A (en) Method of treatment of water for food
JPS57132882A (en) Preparation of l-alanine and d-aspartic acid
JPS572684A (en) Preparation of amylase inhibitor ai-b