PL239086B1 - Sposób otrzymywania kompleksów metalu i kwasu askorbinowego oraz zastosowanie kompleksów otrzymanych tym sposobem - Google Patents

Sposób otrzymywania kompleksów metalu i kwasu askorbinowego oraz zastosowanie kompleksów otrzymanych tym sposobem Download PDF

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Publication number
PL239086B1
PL239086B1 PL421602A PL42160217A PL239086B1 PL 239086 B1 PL239086 B1 PL 239086B1 PL 421602 A PL421602 A PL 421602A PL 42160217 A PL42160217 A PL 42160217A PL 239086 B1 PL239086 B1 PL 239086B1
Authority
PL
Poland
Prior art keywords
complexes
titanium
ascorbic acid
titanyl
asc
Prior art date
Application number
PL421602A
Other languages
English (en)
Polish (pl)
Other versions
PL421602A1 (pl
Inventor
Krzysztof Ambroziak
Tadeusz CZAJA
Tadeusz Czaja
Hubert KARDASZ
Hubert Kardasz
Original Assignee
Intermag Spolka Z Ograniczona Odpowiedzialnoscia
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 Intermag Spolka Z Ograniczona Odpowiedzialnoscia filed Critical Intermag Spolka Z Ograniczona Odpowiedzialnoscia
Priority to PL421602A priority Critical patent/PL239086B1/pl
Priority to JP2019563805A priority patent/JP7136475B2/ja
Priority to KR1020197037023A priority patent/KR102642336B1/ko
Priority to PCT/PL2018/050021 priority patent/WO2018236235A2/en
Priority to BR112019023857-3A priority patent/BR112019023857A2/pt
Priority to CN201880032596.XA priority patent/CN110708957B/zh
Priority to US16/613,677 priority patent/US12022830B2/en
Priority to CA3062628A priority patent/CA3062628C/en
Priority to RU2019139372A priority patent/RU2764545C2/ru
Priority to ES18811670T priority patent/ES2965899T3/es
Priority to HUE18811670A priority patent/HUE064785T2/hu
Priority to PL18811670.1T priority patent/PL3624591T3/pl
Priority to UAA201911615A priority patent/UA125447C2/uk
Priority to LTEPPCT/PL2018/050021T priority patent/LT3624591T/lt
Priority to EP18811670.1A priority patent/EP3624591B1/en
Priority to MX2019013653A priority patent/MX2019013653A/es
Publication of PL421602A1 publication Critical patent/PL421602A1/pl
Publication of PL239086B1 publication Critical patent/PL239086B1/pl

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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/02Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/12Powders or granules
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/02Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
    • A01N43/04Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
    • A01N43/06Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings
    • A01N43/08Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings with oxygen as the ring hetero atom
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/16Heavy metals; Compounds thereof
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N63/00Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05DINORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D9/00Other inorganic fertilisers
    • C05D9/02Other inorganic fertilisers containing trace elements
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/60Biocides or preservatives, e.g. disinfectants, pesticides or herbicides; Pest repellants or attractants
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01PBIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
    • A01P21/00Plant growth regulators
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01PBIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
    • A01P3/00Fungicides
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01PBIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
    • A01P7/00Arthropodicides
    • A01P7/04Insecticides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Zoology (AREA)
  • Wood Science & Technology (AREA)
  • Agronomy & Crop Science (AREA)
  • Dentistry (AREA)
  • Environmental Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Toxicology (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biotechnology (AREA)
  • Microbiology (AREA)
  • Virology (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Fertilizers (AREA)
  • Natural Medicines & Medicinal Plants (AREA)
  • Mycology (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
PL421602A 2017-05-15 2017-05-15 Sposób otrzymywania kompleksów metalu i kwasu askorbinowego oraz zastosowanie kompleksów otrzymanych tym sposobem PL239086B1 (pl)

Priority Applications (16)

Application Number Priority Date Filing Date Title
PL421602A PL239086B1 (pl) 2017-05-15 2017-05-15 Sposób otrzymywania kompleksów metalu i kwasu askorbinowego oraz zastosowanie kompleksów otrzymanych tym sposobem
JP2019563805A JP7136475B2 (ja) 2017-05-15 2018-05-15 金属およびアスコルビン酸錯体の製剤、それらの入手および使用
KR1020197037023A KR102642336B1 (ko) 2017-05-15 2018-05-15 금속 및 아스코르브산 복합체의 제형, 이의 수득 및 용도
PCT/PL2018/050021 WO2018236235A2 (en) 2017-05-15 2018-05-15 Formulations of metal and ascorbic acid complexes, their obtaining and use
BR112019023857-3A BR112019023857A2 (pt) 2017-05-15 2018-05-15 Formulações de complexos metálicos e de ácido ascórbico, sua obtenção e uso
CN201880032596.XA CN110708957B (zh) 2017-05-15 2018-05-15 金属和抗坏血酸复合物的制剂、及其获得和用途
US16/613,677 US12022830B2 (en) 2017-05-15 2018-05-15 Formulations of metal and ascorbic acid complexes, their obtaining and use
CA3062628A CA3062628C (en) 2017-05-15 2018-05-15 Formulations of metal and ascorbic acid complexes, their obtaining and use
RU2019139372A RU2764545C2 (ru) 2017-05-15 2018-05-15 Применение комплексов металла и аскорбиновой кислоты
ES18811670T ES2965899T3 (es) 2017-05-15 2018-05-15 Uso de formulaciones de complejos de metal y ácido ascórbico en cultivo de plantas
HUE18811670A HUE064785T2 (hu) 2017-05-15 2018-05-15 Fém- és aszkorbinsav-komplexeket tartalmazó készítmények alkalmazása növénytermesztésben
PL18811670.1T PL3624591T3 (pl) 2017-05-15 2018-05-15 Zastosowanie formulacji kompleksów metali i kwasu askorbinowego w uprawie roślin
UAA201911615A UA125447C2 (uk) 2017-05-15 2018-05-15 Застосування складів на основі комплексів металу та аскорбінової кислоти
LTEPPCT/PL2018/050021T LT3624591T (lt) 2017-05-15 2018-05-15 Metalo ir askorbo rūgšties kompleksų kompozicijų panaudojimas augalų kultivavimui
EP18811670.1A EP3624591B1 (en) 2017-05-15 2018-05-15 Use of formulations of metal and ascorbic acid complexes in cultivation of plants
MX2019013653A MX2019013653A (es) 2017-05-15 2018-05-15 Formulaciones de complejos metalicos y de acido ascorbico, su obtencion y utilizacion.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL421602A PL239086B1 (pl) 2017-05-15 2017-05-15 Sposób otrzymywania kompleksów metalu i kwasu askorbinowego oraz zastosowanie kompleksów otrzymanych tym sposobem

Publications (2)

Publication Number Publication Date
PL421602A1 PL421602A1 (pl) 2018-11-19
PL239086B1 true PL239086B1 (pl) 2021-11-02

Family

ID=64213651

Family Applications (2)

Application Number Title Priority Date Filing Date
PL421602A PL239086B1 (pl) 2017-05-15 2017-05-15 Sposób otrzymywania kompleksów metalu i kwasu askorbinowego oraz zastosowanie kompleksów otrzymanych tym sposobem
PL18811670.1T PL3624591T3 (pl) 2017-05-15 2018-05-15 Zastosowanie formulacji kompleksów metali i kwasu askorbinowego w uprawie roślin

Family Applications After (1)

Application Number Title Priority Date Filing Date
PL18811670.1T PL3624591T3 (pl) 2017-05-15 2018-05-15 Zastosowanie formulacji kompleksów metali i kwasu askorbinowego w uprawie roślin

Country Status (15)

Country Link
US (1) US12022830B2 (enExample)
EP (1) EP3624591B1 (enExample)
JP (1) JP7136475B2 (enExample)
KR (1) KR102642336B1 (enExample)
CN (1) CN110708957B (enExample)
BR (1) BR112019023857A2 (enExample)
CA (1) CA3062628C (enExample)
ES (1) ES2965899T3 (enExample)
HU (1) HUE064785T2 (enExample)
LT (1) LT3624591T (enExample)
MX (1) MX2019013653A (enExample)
PL (2) PL239086B1 (enExample)
RU (1) RU2764545C2 (enExample)
UA (1) UA125447C2 (enExample)
WO (1) WO2018236235A2 (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL239086B1 (pl) 2017-05-15 2021-11-02 Intermag Spolka Z Ograniczona Odpowiedzialnoscia Sposób otrzymywania kompleksów metalu i kwasu askorbinowego oraz zastosowanie kompleksów otrzymanych tym sposobem
WO2023076494A1 (en) * 2021-10-27 2023-05-04 Sound Agriculture Company Substituted furanones and use thereof for agricultural applications
CN114804193B (zh) * 2022-04-13 2023-09-22 攀枝花学院 低浓度工业钛液除铁的方法及制备高纯度二氧化钛的方法
KR20240157898A (ko) 2023-04-26 2024-11-04 국립창원대학교 산학협력단 아르코르빅 산을 함유하는 망간더스트 환원제, 아르코르빅 산을 이용한 망간더스트 내 망간 침출방법

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US21A (en) * 1836-09-05 Granite-machine for dressing or hammering
HU170693B (enExample) 1975-06-21 1977-08-28
HU186758B (en) 1980-12-29 1985-09-30 Kerteszeti Egyetem Compositions for conditioning plants containing titane
CN1003302B (zh) 1985-10-22 1989-02-15 北京有色金属研究总院 植物生长调节剂用的钛-抗坏血酸固体化合物的合成
JPS62249902A (ja) * 1986-04-22 1987-10-30 Kirin Brewery Co Ltd 植物の養液栽培法
AU592211B2 (en) * 1987-07-23 1990-01-04 Kerteszet I Es Elelmiszer Ipari Egyetem Method for improving and increasing the multiplication biological properties and power of resistance against pathogens of living creatures-such as domestic animals and plants-and for favourable control of physiological process
PL163688B1 (pl) 1990-02-28 1994-04-29 Julian Kazibut Sposób otrzymywania preparatu tytanowego, zwłaszcza dla rolnIcW/a
US5186738A (en) * 1990-04-05 1993-02-16 Texas A&M University System Vanadyl compositions and methods for applying the compositions to promote plant growth
PL172871B1 (pl) 1994-03-14 1997-12-31 Inst Nawozow Sztucznych Płynny nawóz z tytanem
US6077811A (en) * 1995-06-06 2000-06-20 Mitchell; James P. Vanadium compositions to enhance plant growth and edible fruit yield
EP0888197A1 (en) 1996-03-21 1999-01-07 Phytotech, Inc. Method for hyperaccumulation of metals in plant shoots
JP3401501B2 (ja) 2000-08-25 2003-04-28 有限会社 農業科学研究所 農園芸用資材
SE521121C2 (sv) 2001-03-19 2003-09-30 Norogard Ab Komposition för resorption av mikronäringsämnen i växter samt förfarande för dess framställning och användning
US20110135754A1 (en) * 2008-08-08 2011-06-09 Fred Chresten Hoberg Control of diseases in crops
CN101671207B (zh) * 2009-09-23 2010-09-08 湖南大方农化有限公司 一种杀菌增产药肥及其使用方法
CN101838159B (zh) 2009-12-04 2012-08-29 中化化肥有限公司 一种含有钛络合物的液体肥料及其制备方法、含有该液体肥料的固体肥料
AU2013286577B2 (en) * 2012-07-05 2017-06-01 Ralco Nutrition, Inc. Agricultural compositions and applications utilizing mineral compounds
PL227766B1 (pl) 2013-07-29 2018-01-31 Intermag Spólka Z Ograniczona Odpowiedzialnoscia Preparat zawierający tytan, sposób wytwarzania preparatu zawierającego tytan oraz zastosowanie preparatu zawierającego tytan w uprawie roślin
AU2014101391B4 (en) 2014-09-01 2015-09-03 Suunil Sudhakar Chaudhry Multifunctional organic agricultural fertilizer composition and process for preparation thereof
PL239086B1 (pl) 2017-05-15 2021-11-02 Intermag Spolka Z Ograniczona Odpowiedzialnoscia Sposób otrzymywania kompleksów metalu i kwasu askorbinowego oraz zastosowanie kompleksów otrzymanych tym sposobem

Also Published As

Publication number Publication date
CA3062628C (en) 2023-08-29
CN110708957B (zh) 2021-12-07
RU2019139372A (ru) 2021-06-16
JP7136475B2 (ja) 2022-09-13
RU2019139372A3 (enExample) 2021-07-27
RU2764545C2 (ru) 2022-01-18
MX2019013653A (es) 2020-01-13
PL421602A1 (pl) 2018-11-19
ES2965899T3 (es) 2024-04-17
PL3624591T3 (pl) 2024-04-15
US12022830B2 (en) 2024-07-02
WO2018236235A3 (en) 2019-04-04
UA125447C2 (uk) 2022-03-09
WO2018236235A2 (en) 2018-12-27
LT3624591T (lt) 2024-01-10
CN110708957A (zh) 2020-01-17
KR20200004886A (ko) 2020-01-14
US20210076681A1 (en) 2021-03-18
CA3062628A1 (en) 2018-12-27
EP3624591A2 (en) 2020-03-25
BR112019023857A2 (pt) 2020-06-02
EP3624591B1 (en) 2023-10-04
KR102642336B1 (ko) 2024-02-28
HUE064785T2 (hu) 2024-04-28
JP2020519681A (ja) 2020-07-02

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