WO1997000301A1 - Materiau pour empecher la condensation de la buee - Google Patents

Materiau pour empecher la condensation de la buee Download PDF

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Publication number
WO1997000301A1
WO1997000301A1 PCT/JP1996/001634 JP9601634W WO9700301A1 WO 1997000301 A1 WO1997000301 A1 WO 1997000301A1 JP 9601634 W JP9601634 W JP 9601634W WO 9700301 A1 WO9700301 A1 WO 9700301A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat
polymer
dew condensation
sensitive
superabsorbent polymer
Prior art date
Application number
PCT/JP1996/001634
Other languages
English (en)
Japanese (ja)
Inventor
Mitsuru Akashi
Takamasa Harada
Toshiaki Nonaka
Ikuo Imaizumi
Original Assignee
Hoechst Industry Limited
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 Hoechst Industry Limited filed Critical Hoechst Industry Limited
Publication of WO1997000301A1 publication Critical patent/WO1997000301A1/fr

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Classifications

    • 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
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces

Definitions

  • the present invention relates to a dew condensation preventing material, and more particularly, to a material suitably used as a building material or the like.
  • the material is placed between an outer wall and an inner wall or is combined with wallpaper to form dew condensation on a surface such as an inner wall.
  • a material that effectively prevents More specifically, it is preferably used as a dew-prevention material in places where dew condensation is likely to occur, such as ceilings, closets, attics, backs of evening baths, flower arrangements, basements, air conditioners, toilets, bathrooms, and refrigeration. is there. Background art
  • heat insulating materials such as glass rolls are placed between the outer and inner walls. It is also widely used in buildings that use timber and timber. In summer, it is to reduce the influence of outside air, and in winter, it is to improve indoor heating efficiency.
  • Japanese Unexamined Patent Publication (Kokai) No. 6-16403 proposes a dew condensation preventing sheet using acrylic acid or an alkali metal salt of acrylic acid.
  • such a material has a small water absorption capacity of, for example, 5 to 25 times, has poor absorption of a large amount of dew water, and is quickly saturated, and once saturated, can exhibit a further dew condensation preventing effect.
  • the absorbed moisture becomes saturated, the polymer becomes more likely to fall off from the wall material as a substrate to which the polymer is attached, or the absorbed moisture causes the weight of the wallpaper or the like to increase.
  • There were also problems such as the adhesive strength between the wallpaper and the wall being reduced and the wall being easily peeled off.
  • Japanese Patent Application Laid-Open No. 6-158032 discloses an acrylic synthetic resin emulsion, a vinyl acetate synthetic resin emulsion, or a copolymer emulsion of both of them and a fluorine synthetic resin emulsion. Coating agents containing silicone-based synthetic resin emulsions as main components have been proposed.
  • the present invention has been made in view of the conventional problems, and a specific heat-sensitive superabsorbent polymer has an excellent water absorption ratio, specifically, a value of 1 to several 100 times. Sensitive to changes in temperature, remarkably affected by humidity, reversible absorption and release of moisture It was found to be used as a dew-prevention material, which is preferably used as a building material.
  • the present invention provides a material that is placed between, for example, an outer wall and an inner wall, or that is compounded with a wallpaper or a permeable base material, and that effectively prevents dew condensation on a surface such as an inner wall of a building.
  • the purpose is. Disclosure of the invention
  • the present invention is a dew condensation preventing material characterized by using a heat-sensitive highly water-absorbing polymer that reversibly absorbs and releases moisture with a change in temperature as a main component of the dew condensation preventing material.
  • a heat-sensitive highly water-absorbing polymer that reversibly absorbs and releases moisture with a change in temperature as a main component of the dew condensation preventing material.
  • the heat-sensitive superabsorbent polymer it is an essential requirement that the heat-sensitive superabsorbent polymer be used as a main component of the dew condensation preventing material.
  • the heat-sensitive superabsorbent polymer exhibits a water-regulating function, and takes in and absorbs a large amount of water into the polymer at low temperatures, and releases the taken water at high temperatures. It is defined as a polymer material bridge having a function.
  • Specific examples of the heat-sensitive superabsorbent polymer include, for example, a polymer containing N-vinylacylamide as a monomer component or a derivative thereof as a main component, and in particular, N-vinylacylamide as N-vinyl. Homopolymers of isobutylamide and copolymers (copolymers) containing N-vinylisobutylamide as a monomer component are preferred.
  • the heat-sensitive superabsorbent polymer is mainly composed of a co-polymer of N-vinylybutylamide and N-vinylacetamide. This is because such a polymer can freely change the temperature at which water is absorbed and released by selecting the ratio of co-loading units.
  • the poly (N-vinyl isobutyl amide) or a derivative thereof, a copolymer of N-vinyl isobutyl amide and N-vinyl acetate amide, and the like are cross-linked using a divinyl compound.
  • a divinyl compound is defined as a compound having two or more double ties which can be superimposed in a molecule.
  • N, N-methylenebisacrylamide, N.N- Preferred is at least one of the group consisting of methylene-bis-N-vinylacetamide, N, N-butylene-bis-N-vinylacetamide and derivatives thereof.
  • a polymer that does not exhibit heat sensitivity can be suitably used in the present invention if it is a polymer that exhibits heat sensitivity by adding an auxiliary agent such as a salt.
  • an auxiliary agent such as a salt.
  • the water absorption capacity of the specific heat-sensitive superabsorbent polymer in the present invention is preferably in the range of 1 to several 100 times. If it is less than 1 time, sufficient dew condensation prevention effect may not be obtained.On the other hand, if it exceeds 100 times, the change in thickness or length will become large when it is made into a sheet or the like. This is because the mechanical strength may be reduced. Further, from the viewpoint of further improving the balance, the water absorption ratio of the specific heat-sensitive superabsorbent polymer is optimally in the range of 5 to 50 times.
  • polymers that can be preferably used in combination with a specific heat-sensitive superabsorbent polymer include polymers superposed from acrylic monomers, such as methyl acrylate, ethyl acrylate, and acrylamide. , Methyl methacrylate, etc., or other than acrylic monomers, but not vinyl acetate, vinyl chloride-vinyl acetate copolymer, cellulose nitrate, vinyl chloride, polyamide, polyvinyl formal, polyvinyl butyral, Inoxy resin, polyester resin, and crosslinkable phenol resin, epoxy resin and the like.
  • acrylic materials are the most suitable in that they can easily change the glass sizing transition point of the anti-condensation material of the present invention, and have good compatibility. is there.
  • a flame retardant an antioxidant, an ultraviolet absorber, a colorant, an inorganic filler, an organic filler, metal particles, etc.
  • a flame retardant such as a halogen-based or phosphorus-based flame retardant to a base used for building materials in order to prevent the building from spreading.
  • an anti-condensation agent to materials utilizing the hydration reaction of cement such as concrete and mortar, and such a platform will only prevent condensation and improve the mechanical strength of concrete and mortar. This is suitable because it can be used as a wall material.
  • fungicide in order to strengthen the anti-fungal property, it is also preferable to add a fungicide, a deodorant, an antibacterial agent and the like.
  • fungicide include isophthalate, pyridine, chlorine, organic thio, organic arsenic, silver, copper and other metal ion-containing substances.
  • the amount of the fungicide, deodorant, antibacterial and the like can be reduced as much as possible. There is also an advantage that safety is improved.
  • a composite with a heat-sensitive superabsorbent polymer such as poly (N-vinylisobutylamide) and a gas-permeable base material.
  • a heat-sensitive superabsorbent polymer such as poly (N-vinylisobutylamide)
  • a gas-permeable base material such as poly (N-vinylisobutylamide)
  • the air-permeable material specifically, a method conforming to the JISL-109B method, preferably having an air permeability of 10 seconds or less, more preferably an air permeability of ⁇ seconds or less Sex.
  • the air permeability is less than or equal to 0 seconds, there is rapid air circulation, and when the air permeability is 1 second or less, the air circulation is better, which is suitable for the present invention.
  • the air-permeable base material a sheet-like fibrous base material is preferable from the viewpoints of handleability, ease of compounding, and the like, and examples thereof include woven fabric, nonwoven fabric, paper, and knitted fabric. In particular, nonwoven fabrics made from various fibers are the most suitable in terms of strength and the like.
  • a hydrophilic fiber As a constituent material of the air-permeable base material, a hydrophilic fiber, a hydrophobic fiber or an intermediate thereof can be used.
  • a hydrophilic fiber poly (N-vinyl isobutylamide) or the like can be used.
  • the heat-sensitive water-absorbing polymer has higher adhesion than the water-absorbing polymer.
  • the use of a hydrophobic fiber has the advantage that the risk of deterioration in insulation and the like is reduced.
  • hydrophilic fiber wood pulp, cotton, wool, rayon, acetate, vinylon, and the like are preferable
  • hydrophobic fiber polyester, acrylic, nylon, polyethylene, polypropylene, polyvinyl chloride, and the like are used. And the like, and for these purposes, these mixed textiles are used.
  • the method of compounding the air-permeable base material with the heat-sensitive superabsorbent polymer is not particularly limited. For example, printing, spraying, and impregnation of the heat-sensitive superabsorbent polymer on the air-permeable base material It is also preferable to laminate the coating, the coating, or the both in the form of a film. Further, it is preferable that the polymer or monomer thus adhered is dried or polymerized by a known means. This is because the adhesion between the air-permeable base material and the heat-sensitive superabsorbent polymer is improved.
  • polymerize using heat, light, electron beam, ultraviolet ray and the like, and it is also preferable to add a polymerization initiator and other additives such as a polymerization accelerator, if necessary. This is because polymers with a controlled molecular weight are available.
  • the composite ratio of the air-permeable base material and the heat-sensitive superabsorbent polymer will be described. That is, in the dew condensation preventing material of the present invention, it is preferable that the heat-sensitive superabsorbent polymer is compounded into 100 to 500 parts by weight with respect to 100 parts by weight of the permeable base material. . If the amount of the heat-sensitive superabsorbent polymer is less than 10 parts by weight, the water absorption of the anti-condensation inhibitor may decrease or become non-uniform, while if it exceeds 500 parts by weight, handleability may increase. This is because there is a possibility that the air permeability may decrease. BRIEF DESCRIPTION OF THE FIGURES
  • FIG. 1 is a drawing showing the time response characteristics of the thermal sensitivity of NVIB polymer.
  • FIG. 2 is a drawing showing a change in light transmittance with respect to a change in the temperature of NVIB polymer.
  • FIG. 3 is a diagram showing a change in light transmittance of the NVIB-NVA co-support body with respect to a temperature change.
  • FIG. 4 is a drawing showing a change in the degree of gel swelling of the crosslinked product of NVIB-NVA copolymer with a change in temperature.
  • NVIB polymer was synthesized by the following synthesis method.
  • the light transmittance When the light transmittance is 0%, it indicates that no water is present in the polymer. On the other hand, when the light transmittance is 100%, the maximum amount of water that can be contained in the polymer is indicated. Indicates that is present.
  • NV IB aqueous solution using a polypropylene nonwoven fabric as a breathable substrate. After immersion, the mixture was squeezed with a transient roller so that an appropriate amount of aqueous solution remained on the substrate. Then, it was dried in an oven at 120 ° C. for 1 hour to obtain a desired dew condensation preventing sheet (100 parts by weight of a breathable base material, 50 parts by weight of NV IB).
  • the sheet was allowed to stand in an oven at 10 ° C., 90% RH and 5 hours, and an experiment for confirming dew condensation was performed using the sheet.
  • dew condensation water was sufficiently absorbed, and no water droplets were observed on the sheet surface, and it was confirmed that the sheet sufficiently functions as a dew condensation prevention sheet.
  • the temperature around the sheet was raised to 25 ° C., and the sheet was allowed to stand for 1 hour.
  • a recovery experiment was performed to observe the appearance of the sheet. As a result, it was confirmed that the state returned to the initial state before the dew condensation experiment with the release of water.
  • the same experiment was repeated 10 times, and it was confirmed that dew water was absorbed and released with good reproducibility.
  • N-vinylacetamide (NVA) was obtained by the following method.
  • NHCOCH, NHCOCH Next, from the NVIB monomer and the NVA monomer Solution polymerization was carried out using azobisisobutyronitrile (AI BN) as a platform initiator to obtain a NV ⁇ B-NVA copolymer.
  • AI BN azobisisobutyronitrile
  • the weight ratios of the charged NVIB monomer and NVA monomer were changed to 80/20 (Example 2), 60/40 (Example 3), and 50/50 (Example 4), and they were co-mounted.
  • Example 2 A heat sensitivity test was performed in the same manner as in Example 1, and the heat sensitivity of the NVIB-NVA co-support body was confirmed. In addition, as shown in FIG. 3, there was a tendency that the point at which the light transmittance changed was lower as the weight ratio of NVIB was larger.
  • Example 1 As in Example 1, a dew condensation prevention confirmation experiment and a recovery experiment were performed. However, a temperature condition of 50 ° C. was used in the recovery experiment. As a result, it was confirmed that all the samples sufficiently absorbed dew condensation water, exhibited excellent dew condensation prevention properties, had excellent water release at high temperatures, and exhibited reproducibility with good reproducibility.
  • N-methylenebisacrylamide (BisA) (5 parts by weight) prepared in Example 1, azobisisobutyro was used as a polymerization initiator.
  • AIBN nitrile
  • a cross-linked body of the NV IB stack was solution-polymerized (Example 5).
  • NV IB monomer 80 parts by weight synthesized in Example 1
  • NVA monomer (20 parts by weight) synthesized in Example 2
  • N.N-methylenebisacrylamide B is A
  • a solution of a crosslinked product of NVIB-NVA copolymer was prepared using azopisoisobutyronitrile (AIBN) as a polymerization initiator (Example 6).
  • AIBN azopisoisobutyronitrile
  • a heat sensitivity test was conducted in the same manner as in Example 1 to confirm the heat sensitivity of the crosslinked polymer of each of the NV IB stack and the NV IB-NVA copolymer. However, in this example, the heat sensitivity was confirmed by elevating the temperature in the oven by 5 ° C. and examining the gel expansion degree (fold) and the volume change.
  • the crosslinked product of the NVIB-NVA copolymer (80/20 parts by weight) has a large change in water absorption around 50 ° C., resulting in heat sensitivity. You can see that.
  • Example 1 As in Example 1, a dew condensation prevention confirmation experiment and a recovery experiment were performed. However, the crosslinked polymer of the NVIB polymer and the NVIB_NVA copolymer is coated by a printing method to prevent dew condensation (100 parts by weight of the breathable base material, 50 parts by weight of the crosslinked body). I got In the recovery experiment, a temperature condition of 50 ° C was used.
  • water can be absorbed in the range of 5 to several hundred times, and excellent dew condensation prevention effect is obtained.Even if water is absorbed, water is released when the temperature rises, and long-term use is possible. It has become possible to provide a dew condensation preventing material that is highly durable and durable.
  • anti-condensation material can be provided as a composite material with a wallpaper or a breathable base material, and can provide a material that has improved handleability and functionality and that effectively prevents dew condensation on the inner wall of a building or the like. became.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Building Environments (AREA)

Abstract

L'invention concerne un matériau pour empêcher d'une manière efficace la condensation de la buée, par exemple, sur la surface du mur interne d'une construction. Ce matériau est, par exemple, placé entre le mur interne et le mur externe, ou il est utilisé sous la forme d'un composite avec du papier de tapisserie, ou un matériau de base perméable aux gaz. Ce matériau anti-condensation contient un polymère thermosensible absorbant fortement l'eau, et qui absorbe et libère l'humidité d'une manière réversible et dépendante des fluctuations de la température. Le polymère est un polymère du N-vinylisobutyramide ou de ses dérivés.
PCT/JP1996/001634 1995-06-16 1996-06-14 Materiau pour empecher la condensation de la buee WO1997000301A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP15012995A JPH093439A (ja) 1995-06-16 1995-06-16 結露防止材料
JP7/150129 1995-06-16

Publications (1)

Publication Number Publication Date
WO1997000301A1 true WO1997000301A1 (fr) 1997-01-03

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PCT/JP1996/001634 WO1997000301A1 (fr) 1995-06-16 1996-06-14 Materiau pour empecher la condensation de la buee

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JP (1) JPH093439A (fr)
WO (1) WO1997000301A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6197765B1 (en) 1999-06-08 2001-03-06 Pnina Vardi Use of diazoxide for the treatment of metabolic syndrome and diabetes complications
WO2001053428A1 (fr) * 2000-01-17 2001-07-26 Nihon Parkerizing Co., Ltd. Agent d'hydrophilisation, fluide d'hydrophilisation et procede d'hydrophilisation
WO2001053427A1 (fr) * 2000-01-17 2001-07-26 Nihon Parkerizing Co., Ltd. Agent de traitement conferant des qualites hydrophiles et une resistance a la corrosion, et fluide et procede d'hydrophilisation
CN112047854A (zh) * 2020-10-20 2020-12-08 中国科学院长春应用化学研究所 一种n-乙烯基烷基酰胺的制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62282633A (ja) * 1986-02-05 1987-12-08 Kyoritsu Yuki Co Ltd 高吸水性樹脂乳化物及びその製造方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62282633A (ja) * 1986-02-05 1987-12-08 Kyoritsu Yuki Co Ltd 高吸水性樹脂乳化物及びその製造方法

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6197765B1 (en) 1999-06-08 2001-03-06 Pnina Vardi Use of diazoxide for the treatment of metabolic syndrome and diabetes complications
WO2001053428A1 (fr) * 2000-01-17 2001-07-26 Nihon Parkerizing Co., Ltd. Agent d'hydrophilisation, fluide d'hydrophilisation et procede d'hydrophilisation
WO2001053427A1 (fr) * 2000-01-17 2001-07-26 Nihon Parkerizing Co., Ltd. Agent de traitement conferant des qualites hydrophiles et une resistance a la corrosion, et fluide et procede d'hydrophilisation
US6987143B2 (en) 2000-01-17 2006-01-17 Henkel Kommanditgesellschaft Auf Aktien Hydrophilizing agent, hydrophilizing fluid, and method of hydrophilizing
CN112047854A (zh) * 2020-10-20 2020-12-08 中国科学院长春应用化学研究所 一种n-乙烯基烷基酰胺的制备方法
CN112047854B (zh) * 2020-10-20 2021-07-02 中国科学院长春应用化学研究所 一种n-乙烯基烷基酰胺的制备方法

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Publication number Publication date
JPH093439A (ja) 1997-01-07

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