WO2023090698A1 - Composition d'isolant du froid respectueuse de l'environnement et bloc isolant du froid la comprenant - Google Patents

Composition d'isolant du froid respectueuse de l'environnement et bloc isolant du froid la comprenant Download PDF

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Publication number
WO2023090698A1
WO2023090698A1 PCT/KR2022/016959 KR2022016959W WO2023090698A1 WO 2023090698 A1 WO2023090698 A1 WO 2023090698A1 KR 2022016959 W KR2022016959 W KR 2022016959W WO 2023090698 A1 WO2023090698 A1 WO 2023090698A1
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WIPO (PCT)
Prior art keywords
coolant composition
amorphous
oxide
coolant
amorphous oxide
Prior art date
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PCT/KR2022/016959
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English (en)
Korean (ko)
Inventor
이세운
오휘수
이상엽
최석경
Original Assignee
오씨아이 주식회사
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Priority to CN202280045566.9A priority Critical patent/CN117693572A/zh
Publication of WO2023090698A1 publication Critical patent/WO2023090698A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/04—Articles or materials wholly enclosed in single sheets or wrapper blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08—Materials not undergoing a change of physical state when used
    • C09K5/10—Liquid materials

Definitions

  • the present invention relates to an eco-friendly coolant composition and a cold pack including the same, and more specifically, to a cool pack that includes the same and an eco-friendly coolant composition capable of maintaining cool performance for a long period of time at the same time.
  • the cooling agent serves to keep food, medicine, etc. inside the sealed container at a low temperature for a certain period of time.
  • a super absorbent polymer SAP is used as a main component of a coolant composition to replace ice.
  • Superabsorbent polymers can absorb water up to 40 to 1,000 times their own weight by expanding their volume, and can provide cool air for a long time when frozen, so they have been used as a major component of coolant compositions.
  • superabsorbent polymers are classified as microplastics. When superabsorbent polymers are released, plankton and marine organisms ingest microplastics, resulting in destruction of the ecosystem. Accordingly, environmental regulations on coolant compositions have recently become stricter, and the discharge of superabsorbent polymers is limited.
  • An object to be solved by the present invention is to provide a coolant composition capable of maintaining cool performance for a long period of time while having eco-friendliness.
  • Another problem to be solved by the present invention is to provide a cold pack containing the coolant composition.
  • the coolant composition may include an amorphous oxide, a binary ionic compound, and water, and the total organic carbon (TOC) of the coolant composition is 0 ppm to It may be 1 ppm.
  • TOC total organic carbon
  • the cooling pack may include the cooling agent composition and a packaging material for sealing the cooling agent composition.
  • the coolant composition according to the present invention does not contain polymers and organic compounds and has a very low total organic carbon (TOC), it can be discharged and has eco-friendliness.
  • the coolant composition according to the present invention includes an amorphous oxide having a three-dimensional three-dimensional structure, it can maintain cool performance for a long time.
  • the coolant composition according to the present invention can maintain a stable dispersion state in an aqueous solution, and can prevent bacterial propagation or contamination of stored goods, so that long-term storage properties can be secured.
  • FIG. 1 is a cross-sectional view showing a cold pack including an amorphous oxide according to embodiments of the present invention.
  • FIG. 2 is an enlarged view showing the structure of an amorphous oxide according to embodiments of the present invention.
  • 1 is a cross-sectional view showing a cold pack including an amorphous oxide according to embodiments of the present invention.
  • 2 is an enlarged view showing the structure of an amorphous oxide according to embodiments of the present invention.
  • the cold pack CP may include a coolant composition CC and a packaging material PM.
  • the coolant composition (CC) may include an amorphous oxide, a binary ionic compound, and water.
  • An amorphous oxide according to embodiments of the present invention may include at least one of an amorphous metal oxide and an amorphous metalloid oxide.
  • the amorphous metal oxide may include an amorphous transition metal oxide or an amorphous post-transition metal oxide.
  • the amorphous transition metal oxide may include, for example, titania (TiO 2 ) or zirconia (ZrO 2 ).
  • the amorphous post-transition metal oxide may include, for example, alumina (Al 2 O 3 ).
  • the amorphous metalloid oxide may include, for example, silica (SiO 2 ).
  • the amorphous oxide may include, for example, at least one selected from titania (TiO 2 ), alumina (Al 2 O 3 ), silica (SiO 2 ), and zirconia (ZrO 2 ).
  • the amorphous oxide may include, for example, at least two selected from titania (TiO 2 ), alumina (Al 2 O 3 ), silica (SiO 2 ), and zirconia (ZrO 2 ).
  • amorphous oxides may include amorphous metal oxides and amorphous metalloid oxides.
  • the amorphous oxide may include at least one selected from titania (TiO 2 ), alumina (Al 2 O 3 ), and zirconia (ZrO 2 ) and silica (SiO 2 ).
  • Amorphous oxide according to embodiments of the present invention may include an aggregate (AG) formed by connecting a plurality of primary particles (PP).
  • the primary particles PP may be connected to each other due to collisions to form aggregates AG.
  • the aggregate AG may have a three-dimensional structure including branches.
  • Amorphous oxides may be miscible with other compounds in aqueous solution.
  • an aqueous solution may be confined within a three-dimensional branched structure of amorphous oxide, and the aggregate (AG) of amorphous oxide may serve as a support.
  • the average diameter of the primary particles (PP) of the amorphous oxide may be, for example, 2 nm to 50 nm.
  • the specific surface area of the amorphous oxide may be, for example, 40 m 2 /g to 500 m 2 /g.
  • Silica (SiO 2 ) may be amorphous silicon dioxide, and may include, for example, fumed silica (FS).
  • Fumed silica may be in the form of a white powder when present alone. Fumed silica may have hydrophilic properties. Thus, fumed silica can be miscible with other compounds in aqueous solution.
  • the average diameter of the primary particles (PP) constituting the fumed silica may be, for example, 2 nm to 50 nm, and the specific surface area of the fumed silica may be, for example, 40 m 2 /g to 500 m 2 It can be /g.
  • Fumed silica may be formed by hydrolysis of chlorosilane in a flame of 1,000 ° C. or higher formed from oxygen and hydrogen.
  • the fumed silica may be connected to each other due to collisions between the primary particles PP formed in the flame to form an aggregate AG.
  • the size of the aggregate (AG) may be, for example, 1 ⁇ m to 500 ⁇ m.
  • amorphous silica SiO 2
  • amorphous silica does not affect the human body and is harmless with low toxicity. material is known.
  • an aqueous dispersion of an amorphous oxide having a three-dimensional three-dimensional structure as a coolant, a three-dimensional structure formed by hydrogen bonds between aggregates (AG) and/or Van der Waals force is formed. Water molecules can be trapped in the three-dimensional framework.
  • the coolant composition CC freezes, it can provide cool air for a long time.
  • it may be effective to maintain the existing temperature since heat transfer is not smooth due to the interface between the aggregates AG due to the three-dimensional structure.
  • the content of the amorphous oxide may be, for example, 0.1 wt% to 18 wt%.
  • the content of the amorphous oxide is less than 0.1 wt%, the viscosity of the coolant composition (CC) is not sufficiently secured, and thus the shape of the cold pack (CP) may be easily deformed.
  • the content of the amorphous oxide exceeds 18 wt%, the amorphous oxide may not be uniformly mixed, and energy that can be stored per unit mass may decrease, resulting in deterioration in cooling performance.
  • the binary ionic compound according to embodiments of the present invention may include at least one selected from alkali metal salts, alkali metal hydroxides, alkaline earth metal salts, alkaline earth metal hydroxides, carbonates, and hydrogen carbonates.
  • the binary ionic compound may include, for example, at least one of sodium hydroxide (NaOH) and sodium chloride (NaCl).
  • the binary ionic compound may include, for example, sodium hydroxide (NaOH) and sodium chloride (NaCl).
  • the two-component ion-binding compound may serve to adjust the pH of the coolant composition (CC), bind components in the coolant composition (CC) and promote gelation. Accordingly, the binary ion-binding compound can stabilize the phase of an aqueous solution containing an amorphous oxide.
  • the content of the binary ionic bond compound may be, for example, 0.01 wt% to 7 wt%.
  • the content of the two-component ion-binding compound is less than 0.01 wt%, the pH of the aqueous solution is lowered so that the phase of the aqueous solution of the coolant composition (CC) may become unstable, and the bonding strength and gelation degree between the components may not be sufficient.
  • the content of the two-component ionic compound exceeds 7 wt%, the viscosity of the coolant composition (CC) is unnecessarily high, and thus the coolant performance may deteriorate.
  • Water according to embodiments of the present invention may serve as a solvent for uniformly dispersing the amorphous oxide and the binary ionic compound.
  • Water may be, for example, at least one of deionized water, pure water, ultrapure water, distilled water, tap water, RO water, and industrial water.
  • the amount of water may be, for example, a residual amount that satisfies 100% by weight of the coolant composition (CC).
  • the pH of the coolant composition (CC) according to embodiments of the present invention may be, for example, 5.5 to 8.5.
  • the viscosity of the coolant composition (CC) according to embodiments of the present invention may be, for example, 200 cps to 10,000 cps.
  • the coolant composition (CC) may not contain polymers and organic compounds.
  • the coolant composition (CC) may not include a super absorbent polymer (SAP).
  • the coolant composition (CC) may not include microplastics.
  • the total organic carbon (TOC) of the coolant composition (CC) may be, for example, 0 ppm to 1 ppm. In the present specification, that the total organic carbon (TOC) is 0 ppm means that no organic carbon exists in the coolant composition (CC), or a very small amount of organic carbon that is not detected by a device for measuring the total organic carbon (TOC). It can mean including.
  • the coolant composition (CC) may not include a superabsorbent polymer (SAP) classified as microplastic, and the total organic carbon content (TOC) of the coolant composition (CC) may be 0 ppm to 1 ppm. Accordingly, since the coolant composition (CC) of the present invention is harmless to marine organisms, it may have eco-friendliness capable of being discharged. Therefore, it can satisfy the environmental standards for the amount of pH, TOC, and / or suspended solids (SS), which are gradually being strengthened, so that it does not cause environmental pollution problems and solves the problem of charges that occur during disposal.
  • a coolant composition (CC) can be provided.
  • the coolant composition (CC) according to the present invention can maintain a stable dispersion state in an aqueous solution. Accordingly, it is possible to prevent bacterial propagation or contamination of stored goods without a separate preservative, and long-term storage properties can be secured.
  • SAP superabsorbent polymer
  • the packaging material (PM) can seal the coolant composition (CC).
  • the packaging material (PM) may include, for example, at least one selected from the group consisting of polyethylene (PE), linear low-density polyethylene (LLDPE), polypropylene (PP), polyvinyl chloride (PVC), and polyethylene terephthalate (PET).
  • PE polyethylene
  • LLDPE linear low-density polyethylene
  • PP polypropylene
  • PVC polyvinyl chloride
  • PET polyethylene terephthalate
  • the packaging material PM may be a thin film. Accordingly, the weight of the cold pack CP can be reduced and the production cost can be reduced.
  • a three-dimensional silica (SiO 2 ) aqueous dispersion, sodium hydroxide (NaOH), and sodium chloride (NaCl) were added and stirred to prepare a coolant composition (pH 7) according to Example 1.
  • the content of silica in the coolant composition of Example 1 was 5 wt%, and the content of sodium chloride (NaCl) was 1 wt%.
  • Sodium hydroxide (NaOH) was added until the pH of the coolant composition reached 7.
  • Deionized water from which all ions have been removed which is used as an existing coolant, was used as a coolant.
  • the experiment was conducted using the ISTA 7D Summer Profile, which evaluates the influence of external temperature exposure. After taking 0.5 kg each of the coolant composition according to Example 1 and Comparative Example 1, it was cooled at -18 ° C for 72 hours. In the temperature and humidity control chamber, the time for each of the cooled coolant compositions to reach 3 ° C was measured, and the results are shown in Table 1 below.
  • Example 1 Comparative Example 1 Time to reach 0 °C 9 hours 28 minutes 8 hours 48 minutes Time to reach 3°C 9 hours 42 minutes 9 hours 27 minutes Viscosity (cps) 305.9 One Total organic carbon, TOC (ppm) ⁇ 1 ⁇ 1
  • Example 1 As can be seen from Table 1, it was confirmed that the cooling agent composition according to Example 1 can secure the same level of cooling performance as or higher than that of a commercially available water cooling agent (Comparative Example 1).
  • the coolant composition according to Example 1 did not contain a separate organic compound as in Comparative Example 1, and TOC (Total organic carbon) was measured to be less than 1 ppm.
  • the viscosity of the coolant composition according to Example 1 was measured to be higher than that of Comparative Example 1. As the coolant composition of Example 1 had a certain viscosity, it was confirmed that long-term storage properties could be secured by maintaining a stable dispersion state at room temperature.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
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Abstract

La présente invention concerne une composition d'isolant du froid respectueuse de l'environnement et un bloc isolant du froid la comprenant, et, plus particulièrement, la composition d'isolant du froid peut comprendre un oxyde amorphe, un composé ionique binaire et de l'eau, et le carbone organique total (COT) de la composition d'isolant du froid peut être de 0 à 1 ppm.
PCT/KR2022/016959 2021-11-18 2022-11-02 Composition d'isolant du froid respectueuse de l'environnement et bloc isolant du froid la comprenant WO2023090698A1 (fr)

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Application Number Priority Date Filing Date Title
CN202280045566.9A CN117693572A (zh) 2021-11-18 2022-11-02 环保型保冷组合物以及包含该环保型保冷组合物的保冷包

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KR1020210159646A KR20230073420A (ko) 2021-11-18 2021-11-18 친환경 보냉제 조성물 및 이를 포함하는 보냉 팩
KR10-2021-0159646 2021-11-18

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WO2023090698A1 true WO2023090698A1 (fr) 2023-05-25

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0617037A (ja) * 1992-06-29 1994-01-25 Shin Etsu Chem Co Ltd 保冷剤組成物
JPH1095970A (ja) * 1996-09-20 1998-04-14 Mizusawa Ind Chem Ltd 保冷剤組成物
JP2003096238A (ja) * 2001-07-18 2003-04-03 Shin Etsu Chem Co Ltd 新規なゲル、これを用いたゲル状保冷剤組成物及びその製造方法
WO2004052251A1 (fr) * 2002-12-06 2004-06-24 Tamai Kasei Co. Ltd. Sac refrigerant
KR20210031575A (ko) * 2019-09-11 2021-03-22 오씨아이 주식회사 친환경 보냉제 조성물 및 이를 포함하는 보냉 팩

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0617037A (ja) * 1992-06-29 1994-01-25 Shin Etsu Chem Co Ltd 保冷剤組成物
JPH1095970A (ja) * 1996-09-20 1998-04-14 Mizusawa Ind Chem Ltd 保冷剤組成物
JP2003096238A (ja) * 2001-07-18 2003-04-03 Shin Etsu Chem Co Ltd 新規なゲル、これを用いたゲル状保冷剤組成物及びその製造方法
WO2004052251A1 (fr) * 2002-12-06 2004-06-24 Tamai Kasei Co. Ltd. Sac refrigerant
KR20210031575A (ko) * 2019-09-11 2021-03-22 오씨아이 주식회사 친환경 보냉제 조성물 및 이를 포함하는 보냉 팩

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KR20230073420A (ko) 2023-05-26
CN117693572A (zh) 2024-03-12

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