WO2011134074A1 - Substances et procédés de lutte contre la poussière et les mauvaises odeurs - Google Patents

Substances et procédés de lutte contre la poussière et les mauvaises odeurs Download PDF

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Publication number
WO2011134074A1
WO2011134074A1 PCT/CA2011/000502 CA2011000502W WO2011134074A1 WO 2011134074 A1 WO2011134074 A1 WO 2011134074A1 CA 2011000502 W CA2011000502 W CA 2011000502W WO 2011134074 A1 WO2011134074 A1 WO 2011134074A1
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WO
WIPO (PCT)
Prior art keywords
odor
animal litter
litter material
substrate
dust
Prior art date
Application number
PCT/CA2011/000502
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English (en)
Inventor
Paul Jollez
Original Assignee
Les Procedes Servi-Sand Canada 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 Les Procedes Servi-Sand Canada Inc. filed Critical Les Procedes Servi-Sand Canada Inc.
Priority to CA2797634A priority Critical patent/CA2797634C/fr
Publication of WO2011134074A1 publication Critical patent/WO2011134074A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K1/00—Housing animals; Equipment therefor
    • A01K1/015—Floor coverings, e.g. bedding-down sheets ; Stable floors
    • A01K1/0152—Litter
    • A01K1/0154—Litter comprising inorganic material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/01—Deodorant compositions
    • A61L9/014—Deodorant compositions containing sorbent material, e.g. activated carbon
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/14—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes

Definitions

  • the present invention generally relates to the field of odor and dust control, and in particular to dust and odor control of materials such as particulate domestic animal litter.
  • Dust and odor are problematic phenomena that occur particularly in connection with particulate materials such as animal litter.
  • urine When urine is released into litter, it contains a variety of compounds including ammonium, uric acid and urea.
  • Ammonia which is a relatively volatile odorous compound, can be released from the urine and over time urea is broken down into carbon dioxide and ammonia, resulting in disruptive odors emanating from the litter immediately and over time.
  • materials such as animal litter often have a tendency to allow particles to "dust" and become suspended in the air, which reduces air quality and in some cases can be a health hazard depending on the material and quantity of dust in the air.
  • dusting can be a particularly acute problem. It is a challenge to provide materials such as animal litter that has effective dust control.
  • Urease inhibitors have been used in some industries for controlling urine odors by inhibiting the hydrolysis of urea into carbon dioxide and ammonia. Other known substances have proved ineffective, inefficient, costly, or difficult to apply to certain materials.
  • the present invention provides a dust and odor control material comprising a substrate; an odor-neutralising and dust-control agent associated with the substrate; and an odor- retardant agent associated with the substrate.
  • the substrate comprises a clay-based substance.
  • the substrate substantially comprises bentonite clay.
  • the bentonite comprises sodium bentonite.
  • the clay may comprise clumping clay and/or non clumping clay.
  • the substrate may also comprise starch.
  • the substrate comprises at least one of a clay-based compound, limestone-based compound, silica- based compound, cellulose-based compound, cellulose derivatives-based compound, agricultural waste-based compound or soil-based compound.
  • the substrate comprises an extruded compound which may be in the form of pellets.
  • the odor-neutralising and dust-control agent comprises a salt.
  • the salt may be a hydrate. It may be an alkaline earth salt, preferably an alkaline-earth chloride.
  • the odor-neutralising and dust-control agent comprises at least one of CaCI 2 or MgCI 2 .
  • the odor-neutralising and dust-control agent is MgCI 2 , preferably in hydrous form.
  • the MgCI 2 is provided on the substrate as an aqueous solution.
  • the aqueous solution may contain between about 20 wt% and about 35 wt% MgCI 2 .
  • the aqueous solution may be provided in an amount between 0 % and about 2 % relative to the animal litter material.
  • the aqueous solution may be provided in an amount between about 0.1 % and about 2% or an amount between 0.3% and about 1 % relative to the animal litter material.
  • the hydrate which may be a hydrate of MgCI 2 may be selected to maintain water of crystallisation above 50°C, preferably at or above 60°C.
  • the odor-neutralising and dust-control agent is provided in a concentration sufficient to reduce dusting by at least about 50%.
  • the odor-retardant agent is a urease inhibitor.
  • the urease inhibitor may be selected from N(n-butyl) thiophosphoric triamide (nBTPT), cyclohexyl thiophosphoric triamide (CHTPT), N-(N-butyl) phosphoric triamide (NBPT), cyclohexyl phosphoric triamide (CHPT), N-aliphatic and ⁇ , ⁇ -aliphatic phosphoric triamide, phosphorotriamides, 4-aminophenyl sulphonyl amino phenyl phosphorodiamidates, and N-(diaminophosphinyl)arylcarboxamines.
  • the urease inhibitor may be a polysulfide or thiosulphate or the like.
  • the odor-retardant agent comprises or consists essentially of N-(n-butyl) thiophosphoric triamide (nBTPT).
  • the odor-retardant agent may be provided as a solution of nBTPT.
  • the solution of nBTPT may comprise a solvent, which is a glycol such as propyl glycol.
  • the solution of nBTPT may also contain a lactam, such as a pyrrolidone like methylpyrrolidone.
  • the solution of nBTPT may contain between about 15% to about 30 % w/w of the nBTPT.
  • the solution of nBTPT may be applied to the substrate at between about 0.03% to about 0.06 % w/w.
  • the nBTPT may be used between about 0.01 % and about 1 % relative to the animal litter material.
  • the odor-neutralising and dust-control agent and the odor- retardant agent are associated with the substrate substantially in the form of a coating. Depending on the application method, there may be a solvent for each or both of the two agents.
  • the odor-neutralising and dust-control agent and the odor- retardant agent are associated by extrusion into the substrate.
  • the odor-neutralising and dust-control agent and the odor-retardant agent are associated by compression into the substrate.
  • the odor-neutralising and dust-control agent and the odor-retardant agent are associated by pellet or granule growth into the substrate.
  • the odor-neutralising and dust-control agent and the odor- retardant agent are associated as a coating or surface treatment onto the substrate.
  • the odor-retardant agent is associated as a coating or surface treatment onto the substrate.
  • the odor-retardant agent is embedded or distributed within the substrate.
  • the odor-neutralising and dust- control agent and the odor-retardant agent are sprayed onto the substrate.
  • the odor- neutralising and dust-control agent and the odor-retardant agent may be sprayed sequentially or simultaneously onto the substrate, e.g. the odor-neutralising and dust- control agent may be sprayed first and the odor-retardant agent may be sprayed second.
  • the invention also provides a dust and odor control animal litter material comprising a substrate, N-(n-butyl) thiophosphoric triamide (nBTPT) and MgCI 2 .
  • the present invention also provides a process of making a dust and odor control material, comprising providing a substrate; introducing an odor-neutralising and dust- control agent to the substrate; and introducing odor-retardant agent to the substrate.
  • the odor-neutralising and dust-control agent and the odor- retardant agent are applied onto the substrate as a coating. The two agents may be added sequentially or simultaneously.
  • the odor-neutralising and dust- control agent is sprayed onto the substrate first and the odor-retardant agent is sprayed on second.
  • the odor-neutralising and dust-control agent and the odor- retardant agent may be introduced during spray-drying, during extrusion into an appropriate substrate, during impregnation, during compression, or during pellet or granule growth methods such as tumbling.
  • the agents may be provided on the exterior of the substrate as a coating, or within the substrate such that the substrate coats the agents, or mixed together with the substrate to form a mixed material that can have even distribution of the agents within the substrate volume or not.
  • the present invention also provides a use of a combination for dust and odor control of a substrate material, the combination comprising an odor-neutralising and dust-control agent and an odor-retardant agent both provided on the substrate material.
  • the present invention also provides a kit for dust and odor control of a substrate material, the kit including an odor-neutralising and dust-control agent and an odor- retardant agent provided on the substrate material.
  • the dust and odor control particulate material is a domestic animal litter preferably for use in a litter box.
  • the particulate material is preferably used for controlling the odor when a bodily fluid, such as urine, is released into it.
  • the particulate material may also be a material onto which the agents are provided for neutralising its existing odors and retarding further odor development and release.
  • the particulate material may include a substrate composed of one or more materials.
  • the substrate may be a typical animal or pet litter, such as a cat litter, which are typically mixtures of absorbent materials, odor controlling agents, clumping agents, and other functional or cosmetic enhancing additives.
  • Such substrates cover a wide range of materials and can include recycled newsprint, recycled paper, paper sludge, corn cob granules, rice hulls, peanut hulls, alfalfa, sawdust, cedar sawdust, calcareous matter, ground cereals such as wheat, corn, guar gum, and various clays such as calcium and sodium montmorillonites (including sodium and calcium bentonite), attapulgites, kaolins, and opal clay mixtures.
  • Clay-based litters which provide a clumping property allowing removal of liquid waste from the litter container without excessively contaminating the remaining litter have become popular.
  • Clumps are created when the composition of the swells during the absorption of pet urine, creating a localized rigid clump.
  • Typical additives for litter which provide this swelling and urine absorption property include montmorillonite clays.
  • the substrate is made of clay-based material which may be clumping or non-clumping.
  • the substrate may also be composed of other appropriate materials for use as animal litter and similar applications wherein a potentially odorous liquid is released into the particulate material and may remain there for some time.
  • the substrate comprises a clay-based substance, preferably bentonite clay, and still preferably sodium bentonite.
  • the particulate material includes an odor-neutralising and dust-control agent and an odor-retardant agent.
  • the combination of the two agents enables advantageous functionality for dust and odor control in response to an odorous fluid, such as urine, that is released into the particulate material.
  • the agents may be provided via a solution or in dry form, for instance by spray-drying.
  • Urine contains ammonium, uric acid and urea.
  • the first agent neutralises ammonia that is already present in the fluid and controls dusting and its negative and exacerbating effect on odor and air quality.
  • the first agent has a rapid effect on the immediate odor-causing compound of ammonia.
  • the urea present in the fluid has the potential to break down and form additional ammonia which cannot be neutralised by the first agent.
  • the second agent retards the formation of additional ammonia that results from the hydrolysis of urea, preferably by blocking or retarding urease.
  • the agents are selected according to their action on particular compounds.
  • the odor-neutralising and dust-control agent may be selected to neutralise a volatile odorous compound, while the odor-retardant agent may be selected to retard the formation of that same volatile compound by, for example, blocking an enzyme or reaction that would transform a less-odorous compound into the volatile odorous compound.
  • the agents thus provide a complementary and advantageous functionality.
  • the odor-neutralising and dust-control agent is an alkaline- earth or alkaline metal chloride.
  • the odor-neutralising and dust- control agent comprises at least one of CaCI 2 or MgCI 2 , still preferably MgCI 2 .
  • the MgCI 2 may be provided in diluted solution form such as a 30 wt% solution. Regarding the action of MgCI 2 , in addition to its strong dust control properties, it conserves its water of crystallisation even above 50°C. It also remains active over time and even in high temperature environments.
  • Solutions of MgCI 2 and ammonia form a stabilised ionic system which inhibits the liberation of ammonia into the atmosphere and displays a certain absorptive capacity evidenced by the absence of characteristic ammonia odors.
  • Mg 2+ ions have some degree of inhibiting action on urease, which also retards the formation of ammonia during the transformation of urea.
  • MgCI 2 is used.
  • MgCI 2 has a number of advantages over other compounds such as CaCI 2 -
  • MgCI 2 provides reduced corrosivity; it provides increased conservation of its water of crystallisation at high temperatures such as around 60°C which helps maintain anti-dust effects; it facilitates providing a concentrated solution (e.g. 30%) that is stable at low temperatures (e.g. -30°C); and it is more efficient than CaCI 2 at low concentrations.
  • the odor- retardant agent is a urease inhibitor.
  • the urease inhibitor may be selected from N-(n- butyl thiophosphoric triamide (nBTPT), cyclohexyl thiophosphoric triamide (CHTPT), N- (N-butyl) phosphoric triamide (NBPT), cyclohexyl phosphoric triamide (CHPT), N- aliphatic and ⁇ , ⁇ -aliphatic phosphoric triamide, phosphorotriamides, 4-Aminophenyl sulphonyl amino phenyl phosphorodiamidates, and N-(diaminophosphinyl) arylcarboxamines.
  • the urease inhibitor may also be a polysulfide, or thiosulphate.
  • he odor-retardant agent When he odor-retardant agent has an odor of its own, it may be preferred to associate it with the substrate so as to minimize or eliminate such odor, for example by impregnating the material with it or by providing in a non-exposed layer or in a certain form. Molecule such as the triamides and other products, while effective as retardants of the transformation of urea by urease, do not have an effect on the ammonia already present in the medium.
  • the odor-neutralising and dust-control agent and the odor- retardant agent are associated with the substrate substantially in the form of a coating.
  • the odor-neutralising and dust-control agent is sprayed onto the substrate first and the odor-retardant agent is sprayed on second.
  • the present invention also provides a process of making a dust and odor control particulate material, comprising providing a substrate; introducing an odor-neutralising and dust-control agent to the substrate; and introducing odor-retardant agent to the substrate.
  • the odor-neutralising and dust-control agent and the odor-retardant agent may be introduced by extrusion into an appropriate substrate, by compression, or by pellet or granule growth methods such as tumbling.
  • the odor-neutralising and dust- control agent is preferably provided as a coating or otherwise available to rapidly neutralise odors already present in the fluid when released into the particulate material.
  • the odor-retardant agent is provided so as to be available over a longer period of time for retarding the generation of highly odorous substances such as ammonia. Accordingly, the odor-retardant agent may be associated with the substrate to enable a long-lasting effect and thus may be partially embedded or distributed within the particles of the material.
  • the odor-retardant agent may access the fluid due to the fluid's infiltrating around or into the particulate material.
  • a use of a combination of compounds for dust and odor control of a substrate material includes the odor-neutralising and dust-control agent and the odor-retardant agent as described above.
  • the agents are provided on the substrate material, preferably particulate materials such as materials that are clay-based, limestone-based, silica-based, cellulose-based, cellulose derivatives-based, agricultural waste-based, soil-based, in natural or synthetic form, or any number of substrates.
  • the agents may be pre-applied on the particulate substrate material to make a product such as animal litter, hygiene products, or the like; or may be applied on an odorous municipal or industrial material such as solid or semi-solid waste, filtrates, residues, tailings, or the like; or may be other like materials that may benefit from dust and odor control.
  • a product such as animal litter, hygiene products, or the like
  • an odorous municipal or industrial material such as solid or semi-solid waste, filtrates, residues, tailings, or the like
  • the combination mentioned above may be provided in the form of a chemical kit comprising the two agents in dry form or in separate solvents.
  • the odor- neutralising and dust-control agent and the odor-retardant agent may be one and the same substance.
  • the material may include a first portion of substrates that are provided with one agent and a second portion of the substrates that are provided with the other agent, the first and second portions being mixable together by a manufacturer prior to packaging or by a user just prior to use.
  • Cat litter material was prepared according to the following procedures:
  • a benton/te type absorbent substrate was prepared having a known granulometry.
  • a first aqueous solution (solution I) containing 20-35 % w/w of MgCI 2 was prepared to then be applied on a portion of the prepared litter absorbent at 1 -1.3 % w/w.
  • a second aqueous solution (solution II) containing about 15-30 % w/w of N(n-butyl) thiophosphoric triamide nBTPT was prepared, in the presence of surfactant or not, to be applied on another portion of the prepared litter substrate at 0.03-0.06 % w/w.
  • the two solutions I and II were applied one after the other on another portion of the prepared litter substrate in the same concentrations noted hereinabove.
  • Example 2 The same litter preparation at in Example 1 was separated into 3 portions of 400 grams that were exposed to an aqueous solution containing 7.5 grams of urea, 0.5 grams of urease in 50 grams of water.
  • the results of released ammonia over time are as follows:
  • the products were introduced at the last stage of an extrusion of a mixture of bentonite and starch.
  • the conditions were as follows:
  • the MgCI 2 may be used in an amount of about 0.1 % to about 2 % of a 20-35 wt% MgCI 2 solution, preferably in an amount of about 0.3 % to about 1 %.
  • a solution of N-(n-butyl) thiophosphoric triamide may be used for the odor-retardant agent.
  • the solution may be about 20 % to about 30 % of the N-(n-butyl) thiophosphoric triamide agent with a certain amount of solvent and/or solubilising compounds for providing it as a liquid.
  • Their may also be other additives such as surfactants, dispersing agents, stabilisers, and the like.
  • the N-(n-butyl) thiophosphoric triamide may be preferably used in an amount between about 0.01 % and about 1 %.
  • sample 1 A sample of sodium bentonite (white) was treated in a small 60 L mixer with 0.25% of mineral oil and then with an aqueous solution containing 0.85% of MgCI 2 at 30 %w/w (hereafter referred to as sample 1 ).
  • Sample 1 was then treated with a solution containing 20% nBTPT in a methylpyrrolidone based solvent at 0.06%, 0.15% and 0.3% (hereafter referred to as samples 2, 3 and 4 respectively).
  • samples 2, 3 and 4 a solution containing 20% nBTPT in a methylpyrrolidone based solvent at 0.06%, 0.15% and 0.3%
  • samples 2, 3 and 4 a solution containing 20% nBTPT in a methylpyrrolidone based solvent at 0.06%, 0.15% and 0.3%
  • aqueous solutions that were used were at 30% w/w of salt (anhydrous basis).

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Epidemiology (AREA)
  • Environmental Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Zoology (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Housing For Livestock And Birds (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

La présente invention concerne une substance de lutte contre la poussière et les mauvaises odeurs comprenant un substrat, un agent de neutralisation des mauvaises odeurs et de lutte contre la poussière associé au substrat et un agent retardant les mauvaises odeurs associé au substrat. La substance de litière d'animal peut comprendre un substrat à base de bentonite, du triamide N-(n-butyl) thiophosphorique (nBTPT) et du MgCl2. Un procédé permettant de fabriquer la substance consiste à introduire les agents par séchage par atomisation, extrusion, imprégnation, compression, ou par des procédés de croissance de pastilles ou de granulés tels que le gyrofinissage.
PCT/CA2011/000502 2010-04-29 2011-04-28 Substances et procédés de lutte contre la poussière et les mauvaises odeurs WO2011134074A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2797634A CA2797634C (fr) 2010-04-29 2011-04-28 Substances et procedes de lutte contre la poussiere et les mauvaises odeurs

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US32915010P 2010-04-29 2010-04-29
CA2,701,995 2010-04-29
US61/329,150 2010-04-29
CA 2701995 CA2701995A1 (fr) 2010-04-29 2010-04-29 Substances et procedes de captage des poussieres et des odeurs

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WO2011134074A1 true WO2011134074A1 (fr) 2011-11-03

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WO2013180986A1 (fr) * 2012-05-30 2013-12-05 Nestec Sa Litières animales quasi exemptes de poussière et leurs procédés de fabrication
WO2014110227A1 (fr) * 2013-01-11 2014-07-17 Lsc Environmental Llc Couverture de matière volumineuse de réglage des odeurs
WO2015031998A1 (fr) * 2013-09-06 2015-03-12 7905122 Canada Inc. Matière anti-odeurs pour des litières pour animaux utilisant des phosphorotriamides sous forme pulvérulente
WO2016081953A1 (fr) * 2014-11-21 2016-05-26 Pioneer Pet Products, Llc Mélanges absorbants granulaires de réduction de poussière en suspension dans l'air
US9491926B2 (en) 2012-09-11 2016-11-15 Pioneer Pet Products, Llc Method of making extruded self-clumping granular absorbent
US10028481B2 (en) 2012-09-11 2018-07-24 Pioneer Pet Products, Llc Granular absorbent and system and method for treating or processing granular absorbent during granular absorbent transport
EP3366122A1 (fr) 2017-02-27 2018-08-29 AB7 Innovation S.A.S.U. Utilisation de matrices polymeres odorantes pour litieres
DE102019201159A1 (de) 2019-01-30 2020-07-30 Skw Stickstoffwerke Piesteritz Gmbh Hochwirksame Konzentrate mit PPDA und deren Verwendung zur Stabilisierung der Wertstoffe in Tierexkrementen
US10882238B2 (en) 2014-01-25 2021-01-05 Pioneer Pet Products, Llc Method for making quenched granular absorbent
US11058091B2 (en) 2016-02-19 2021-07-13 Rohm And Haas Company Low dust animal litter
US11457605B2 (en) 2012-09-11 2022-10-04 Pioneer Pet Products, Llc Extruded self-clumping cat litter
US11470811B2 (en) 2012-09-11 2022-10-18 Pioneer Pet Products, Llc Extruded granular absorbent
KR20220167022A (ko) * 2021-06-11 2022-12-20 충북대학교 산학협력단 동물분뇨의 암모니아 발생 억제용 조성물
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WO2014028775A1 (fr) 2012-08-15 2014-02-20 Koch Agronomic Services, Llc Compositions liquides contenant des inhibiteurs d'uréase et des alcools d'arylalkyle
CN110436998A (zh) 2012-08-15 2019-11-12 科氏农艺服务有限责任公司 含有脲酶抑制剂和二醇烷基醚的改善的组合物及肥料组合物
AU2015212412B2 (en) 2014-01-31 2019-07-11 SABIC Agri-Nutrients Company Fertilizer capsule comprising one or more cores and method of making same
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CN108026118B (zh) 2015-07-20 2021-11-05 沙特基础工业全球技术公司 肥料组合物及其制备方法和使用方法
US11104618B2 (en) 2015-07-20 2021-08-31 Sabic Global Technologies B.V. Fertilizer composition and methods of making and using same
CN108349828A (zh) 2015-11-16 2018-07-31 沙特基础工业全球技术有限公司 包膜粒状肥料、其制造方法及其用途
WO2017087265A1 (fr) 2015-11-16 2017-05-26 Sabic Global Technologies B.V. Procédés de fabrication d'engrais granulaires enrobés
EP3414214A1 (fr) 2016-02-08 2018-12-19 SABIC Global Technologies B.V. Procédé de fabrication de noyau d'ensemencement d'engrais
CN110809569B (zh) 2017-04-19 2022-07-12 沙特基础工业全球技术公司 具有在同一颗粒内分开的尿素酶抑制剂和硝化抑制剂的增效肥料
US11358908B2 (en) 2017-04-19 2022-06-14 Sabic Global Technologies B.V. Enhanced efficiency fertilizer with urease inhibitor and nitrification inhibitor in separate particles
WO2018193345A1 (fr) 2017-04-20 2018-10-25 Sabic Global Technologies B.V. Engrais à efficacité améliorée comportant une composition de poudre enrobée
AU2018313067B2 (en) 2017-08-09 2024-02-08 SABIC Agri-Nutrients Company Extruded fertilizer granules with urease and/or nitrification inhibitors

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