JPH01230689A - Persistent coolant - Google Patents
Persistent coolantInfo
- Publication number
- JPH01230689A JPH01230689A JP5782788A JP5782788A JPH01230689A JP H01230689 A JPH01230689 A JP H01230689A JP 5782788 A JP5782788 A JP 5782788A JP 5782788 A JP5782788 A JP 5782788A JP H01230689 A JPH01230689 A JP H01230689A
- Authority
- JP
- Japan
- Prior art keywords
- water
- substance
- coolant
- dissolved
- endothermic reaction
- 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.)
- Pending
Links
- 239000002826 coolant Substances 0.000 title claims abstract description 24
- 230000002085 persistent effect Effects 0.000 title abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000126 substance Substances 0.000 claims abstract description 20
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 12
- 239000011707 mineral Substances 0.000 claims abstract description 12
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000004202 carbamide Substances 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 9
- 239000000454 talc Substances 0.000 claims abstract description 8
- 229910052623 talc Inorganic materials 0.000 claims abstract description 8
- 229920003169 water-soluble polymer Polymers 0.000 claims abstract description 8
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229920000098 polyolefin Polymers 0.000 claims abstract description 7
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims abstract description 6
- 235000010755 mineral Nutrition 0.000 claims description 11
- 238000010828 elution Methods 0.000 claims description 8
- 239000010419 fine particle Substances 0.000 claims description 7
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 7
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 6
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 6
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- -1 polyethylene Polymers 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 3
- 235000019270 ammonium chloride Nutrition 0.000 claims description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 3
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 3
- LNEUSAPFBRDCPM-UHFFFAOYSA-N carbamimidoylazanium;sulfamate Chemical compound NC(N)=N.NS(O)(=O)=O LNEUSAPFBRDCPM-UHFFFAOYSA-N 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- 235000011181 potassium carbonates Nutrition 0.000 claims description 3
- 239000001103 potassium chloride Substances 0.000 claims description 3
- 235000011164 potassium chloride Nutrition 0.000 claims description 3
- 239000004323 potassium nitrate Substances 0.000 claims description 3
- 235000010333 potassium nitrate Nutrition 0.000 claims description 3
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 3
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 3
- 235000011151 potassium sulphates Nutrition 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 235000017550 sodium carbonate Nutrition 0.000 claims description 3
- 239000004317 sodium nitrate Substances 0.000 claims description 3
- 235000010344 sodium nitrate Nutrition 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 15
- 238000000576 coating method Methods 0.000 abstract description 14
- 239000011248 coating agent Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 10
- 238000004090 dissolution Methods 0.000 abstract description 5
- 229920001684 low density polyethylene Polymers 0.000 abstract description 4
- 239000004702 low-density polyethylene Substances 0.000 abstract description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract description 2
- 239000005977 Ethylene Substances 0.000 abstract description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 abstract description 2
- 229920001577 copolymer Polymers 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 239000002904 solvent Substances 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229950011008 tetrachloroethylene Drugs 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 235000019688 fish Nutrition 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 235000015243 ice cream Nutrition 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、持続型冷却剤に関する。更に詳しくは本発明
は、冷却装置、氷を使用することなく、アイスクリーム
類、魚類、飲料、食品等を戸外での消費や一時的冷却や
、保存のための冷却する手段としての持続型冷却剤に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a persistent refrigerant. More specifically, the present invention provides continuous cooling as a means for cooling ice creams, fish, beverages, foods, etc. for outdoor consumption, temporary cooling, or preservation without using a cooling device or ice. This is related to drugs.
［従来技術及びその問題点］
硝酸アンモニウムと水、或いは尿素と水を混合させると
、これらの間に吸熱反応が生じる。この冷却作用を利用
する冷却剤が使用されている。[Prior art and its problems] When ammonium nitrate and water or urea and water are mixed, an endothermic reaction occurs between them. Coolants are used that utilize this cooling effect.
しかしながら、この種のいわゆる寒剤では、該剤と水と
の混合後２〜３分で最大温度降下を示して冷却作用を示
すが、その低温持続時間が短い。However, although this type of so-called cryogen exhibits a cooling effect by exhibiting a maximum temperature drop within 2 to 3 minutes after mixing the agent with water, the duration of the low temperature is short.
この理由は、冷却剤成分である硝酸アンモニウム、尿素
などが水との混合により全部が直ちに溶解し一度に吸熱
反応が進行するためである。The reason for this is that all of the coolant components, such as ammonium nitrate and urea, are immediately dissolved when mixed with water, and an endothermic reaction proceeds at once.
［発明が解決しようとする問題点］
本発明は、上記従来の問題点を解決するものであり、そ
の目的とする所は木に対する溶解速度を自在に制御する
こによって、吸熱速度を制御し、低温状態を長時間に亙
り保持しようとするものである。[Problems to be Solved by the Invention] The present invention solves the above-mentioned conventional problems, and its purpose is to freely control the rate of dissolution into wood, thereby controlling the rate of endothermic absorption, The purpose is to maintain a low temperature state for a long period of time.
［問題点を解決するための手段］ 本発明は、下記（１）〜（５）の構成を有する。[Means for solving problems] The present invention has the following configurations (1) to (5).
（１）水に溶解することにより吸熱反応を生じる物質と
、前記物質の表面に設けられた溶出制御膜とからなる持
続型冷却剤。(1) A continuous cooling agent comprising a substance that causes an endothermic reaction when dissolved in water and an elution control film provided on the surface of the substance.
（２）溶出制御膜がポリオレフィンおよび水不溶性鉱物
質微粒子からなり、必要に応じてこれにエチレン酢酸ビ
ニル共重合体又は水溶性ポリマーを添加した組成物から
なる前記第（１）項記載の冷却剤。(2) The coolant according to the above item (1), wherein the elution control film is composed of a polyolefin and water-insoluble mineral fine particles, and optionally an ethylene-vinyl acetate copolymer or a water-soluble polymer is added thereto. .
（３゛）ポリオレフィンがポリエチレンからなり、水溶
性ポリマーがポリエチレンオキサイドからなり水不溶性
鉱物質微粒子がタルクからなる前記第（２）項記載の冷
却剤。(3) The coolant according to item (2) above, wherein the polyolefin is made of polyethylene, the water-soluble polymer is made of polyethylene oxide, and the water-insoluble mineral fine particles are made of talc.
（４）水不溶性鉱物質微粒子の配合量か組成物重量の５
０〜９５％である前記第（２）項記載の冷却剤。(4) Amount of water-insoluble mineral fine particles or 5% of the composition weight
The coolant according to item (2) above, which has a content of 0 to 95%.
（５）水に溶解するこにより、吸熱反応を生じる物質が
尿素、硝酸アンモニウム、塩化アンモニウム、硫酸アン
モニウム、炭酸ナトリウム、硝酸ナトリウム、硫酸ナト
リウム、硝酸カリウム、塩化カリウム、炭酸カリウム、
硫酸カリウム、スルファミン酸グアニジンから選ばれた
一以上の物質である前記第（１）項記載の冷却剤。(5) Substances that cause an endothermic reaction when dissolved in water include urea, ammonium nitrate, ammonium chloride, ammonium sulfate, sodium carbonate, sodium nitrate, sodium sulfate, potassium nitrate, potassium chloride, potassium carbonate,
The coolant according to item (1) above, which is one or more substances selected from potassium sulfate and guanidine sulfamate.
本発明は、水との混合によって吸熱反応を示す化学物質
の表面を被覆し、この被覆材によって水透過性の制御を
行い被覆された物質が水に溶解する速度を制御し、これ
によって持続型冷却剤を得るものである。被覆される化
学物質は水に溶解して吸熱反応を生じるもので、被覆操
作を行う上で２〜５ｍｍの粒状物が好ましい、か−る物
質すなわち化合物として、尿素、硝酸アンモニウム、塩
化アンモニウム、硫酸アンモニウム、炭酸ナトリウム、
硝酸ナトリウム、硫酸ナトリウム、硝酸カリウム、塩化
カリウム、炭酸カリウム、硫酸カリウム、スルファミン
酸グアニジン等が使用できる。The present invention coats the surface of a chemical substance that exhibits an endothermic reaction when mixed with water, controls water permeability with this coating material, controls the rate at which the coated substance dissolves in water, and thereby provides a sustainable This is where you get the coolant. The chemical substance to be coated is one that causes an endothermic reaction when dissolved in water, and particles of 2 to 5 mm are preferable for carrying out the coating operation. Examples of such substances or compounds include urea, ammonium nitrate, ammonium chloride, ammonium sulfate, sodium carbonate,
Sodium nitrate, sodium sulfate, potassium nitrate, potassium chloride, potassium carbonate, potassium sulfate, guanidine sulfamate, etc. can be used.
被覆材としては、ａ、ポリオレフィン系樹脂、ｂ、エチ
レン−酢酸ビニル共重合体、Ｃ１水溶性高分子、および
ｄ、水不溶性の鉱物質粒子が使用できる。中でａおよび
ｄは、必須被膜成分である。低、中および高密度ポリエ
チレン、ポリプロピレン、エチレン−プロピレン共重合
体等が好ましい樹脂としてあげられる。最も好ましいも
のは低密度ポリエチレンである。As the coating material, a, polyolefin resin, b, ethylene-vinyl acetate copolymer, C1 water-soluble polymer, and d, water-insoluble mineral particles can be used. Among them, a and d are essential coating components. Preferred resins include low, medium and high density polyethylene, polypropylene, ethylene-propylene copolymers and the like. Most preferred is low density polyethylene.
エチレン−酢酸ビニル共重合体とはエチレンと酢酸ビニ
ールの共重合体であり重合法、重合度に制約はなく、市
販のものを適宜使用することができる。好ましいものは
高圧重合法によって得られたものである。The ethylene-vinyl acetate copolymer is a copolymer of ethylene and vinyl acetate, and there are no restrictions on the polymerization method or degree of polymerization, and commercially available products can be used as appropriate. Preferred are those obtained by high pressure polymerization.
水不溶性の鉱物質微粒子はタルク、金属酸化物、珪酸質
粉体ガラス、アルカリ土類金属の炭酸塩、硫酸塩等が例
示され、本発明ではこれら一種もしくは二種以上を併用
して用いるものである。Examples of water-insoluble mineral fine particles include talc, metal oxides, silicate powder glass, carbonates and sulfates of alkaline earth metals, and in the present invention, one or more of these may be used in combination. be.
最も好ましいものはタルクである。該粉体の粒度は１０
０ ＪＬ以以下室しくは２０終以下である。Most preferred is talc. The particle size of the powder is 10
0 JL or below, or 20 or below.
本発明に使用する水溶性ポリマーとしてはポリエチレン
オキサイド、ポリアクリルアマイド、ポリエチレンオキ
サイド−ポリアクリルアマイド共重合体、セルロース、
及びその誘導体を挙げることができる。好ましいものは
ポリエチレンオキサイドである。Water-soluble polymers used in the present invention include polyethylene oxide, polyacrylamide, polyethylene oxide-polyacrylamide copolymer, cellulose,
and derivatives thereof. Preferred is polyethylene oxide.
上述の樹脂成分と水不溶性鉱物質微粒子を溶媒に溶解分
散させた後この溶解分散液を、水に溶解して吸熱を生じ
る物質の表面にスプレーしただちに乾燥させ溶出制御膜
をその表面に形成させる。After dissolving and dispersing the above-mentioned resin component and water-insoluble mineral fine particles in a solvent, this dissolved dispersion liquid is sprayed onto the surface of a substance that dissolves in water and generates heat absorption, and is immediately dried to form an elution control film on the surface. .
以下その冷却剤を得る方法について説明する。The method for obtaining the coolant will be explained below.
第１図は本試験で用いた被覆するための噴流層被覆装置
である０図中１は噴流層ケーシング、２は粒状冷却剤投
入口、３は排気口、４はスプレーノズル、６は溶液ポン
プ、７は排出口、８はガス加熱器、９はオリフィス部、
ｌＯはブロワ−１１１は溶解分散液タン、１２は粒状冷
却剤である。予じめ加熱した一定量の熱風を噴流層ケー
シング内に吹き込み、被覆されるべき物質を２より投入
し、噴流層を形成させた後、６のポンプにて、被覆され
るべき溶解分散液を４のスプレーノズルにてスプレーし
、被覆されるべき物質の表面にコーティングを行い、噴
流用熱風によって、溶剤を瞬間的に乾燥させ、溶出制御
膜を形成する。Figure 1 shows the spouted bed coating equipment used in this test. In the figure, 1 is the spouted bed casing, 2 is the granular coolant inlet, 3 is the exhaust port, 4 is the spray nozzle, and 6 is the solution pump. , 7 is a discharge port, 8 is a gas heater, 9 is an orifice part,
1O is a blower, 111 is a dissolved dispersion tank, and 12 is a granular coolant. A certain amount of preheated hot air is blown into the spouted bed casing, the material to be coated is introduced from 2 to form a spouted bed, and then the dissolved dispersion to be coated is pumped through the pump at 6. The solvent is sprayed using the spray nozzle No. 4 to coat the surface of the substance to be coated, and the solvent is instantaneously dried by a jet of hot air to form an elution control film.
［本発明による作用］
本発明に係る溶出制御膜は、被覆するポリオレフィン、
ポリエチレン−酢酸ビニル共重合体、水溶液ポリマー、
水不溶性鉱物質の組成比を変える賽によって、同一被膜
量であっても、制御膜の水通過特性が変り、吸熱性物質
の水溶解速度を自由に変える事ができ、この事によって
冷却持続時間を自由に変えることができる。[Action according to the present invention] The elution control membrane according to the present invention includes a coating polyolefin,
polyethylene-vinyl acetate copolymer, aqueous solution polymer,
By changing the composition ratio of water-insoluble minerals, the water passing characteristics of the control membrane can be changed even with the same amount of coating, and the water dissolution rate of endothermic substances can be freely changed, thereby increasing the cooling duration. can be changed freely.
又、勿論、制御膜の厚さを変える事によっても冷却持続
時間を変えることができる。Of course, the cooling duration can also be varied by varying the thickness of the control membrane.
長時間冷却剤を得るときは、制御膜を構成する樹脂対水
不溶性鉱物質の比を大きくするか又は樹脂部の内ポリオ
レフィンの量をポリエチレン−酢酸ビニル共重合体、水
溶性ポリマーに対し多くする。When obtaining a long-term coolant, increase the ratio of resin to water-insoluble minerals constituting the control membrane, or increase the amount of polyolefin in the resin part relative to polyethylene-vinyl acetate copolymer or water-soluble polymer. .
反対に短時間形持続冷却剤を得るときは、前述の逆を行
う。Conversely, to obtain a short-acting sustained coolant, the above procedure is reversed.
実施例１〜７
タルク（平均粒子径６ＪＬ 最大粒径５０ｐ富士タルク
■製）７００部
ポリエチレン（メルトインデックス？−Ｏｇ／１０分低
密度ポリエチレン旭化成■製）１５０部ポリエチレンオ
キサイド（アルコックスＳＰ。Examples 1 to 7 Talc (average particle size 6JL, maximum particle size 50p manufactured by Fuji Talc) 700 parts polyethylene (melt index?-Og/10 minutes low density polyethylene manufactured by Asahi Kasei ■) 150 parts polyethylene oxide (Alcox SP).
明成化学■製）１５０部
を溶媒テトラクロルエチレン９０００部と混合し攪拌昇
温しく１１５℃）樹脂を溶解させ、タルクが沈降しない
様に分散被覆液を調製する。(manufactured by Meisei Kagaku ■) is mixed with 9000 parts of tetrachloroethylene as a solvent, and the mixture is stirred and heated to 115° C.) to dissolve the resin, and a dispersion coating solution is prepared so that the talc does not precipitate.
第１図の装置に於いて１に粒状尿素（粒径２〜４ ■）
９０００部を２より投入し、８でガス加熱器によって
あらかじめ、昇温された（約１２０℃）のガスを送入す
ることによって噴流層を形成する。ポンプ６を運転し、
スプレーノズル４より被覆液を噴霧し、該噴流層中の尿
素粒子表面のコーティングを行う、前記被覆液中の溶媒
テトラクロルエチレンは噴流中に蒸発し、尿素表面に制
御被膜を形成する。同様の手法を用いて被覆材組成の異
ったものについて、被覆率を変えて、被覆処理を行った
。In the apparatus shown in Figure 1, granular urea (particle size 2 to 4 ■) is added to 1.
9,000 parts were added at step 2, and at step 8, a spouted bed was formed by feeding gas whose temperature had been raised in advance (approximately 120° C.) using a gas heater. operate pump 6,
The coating liquid is sprayed from the spray nozzle 4 to coat the surfaces of the urea particles in the spouted layer. The solvent tetrachlorethylene in the coating liquid is evaporated in the jet to form a control film on the urea surface. Using the same method, coatings with different coating material compositions were coated with different coverage rates.
第１表
註、エチレン−酢酸ビニル共重合体仁井デュポン ＥＶ
Ａ ３６０ ）第１表にて作成した冷却剤について２５
℃水中での尿素溶出速度を測定した（第２図、第３図）
。Note to Table 1: Ethylene-vinyl acetate copolymer Nii DuPont EV
A 360) Regarding the coolant prepared in Table 1 25
The urea dissolution rate in ℃ water was measured (Figures 2 and 3).
.
第１表に作成した冷却剤についてその冷却効果を測定し
た（第４図） 、 １１１定法は２５°Ｃの恒温空気中
に樹脂袋（１０ｃｍＸ １０ｃｍ）をつるし、これに試
料（２００ｇ）及び２５℃の水（１２０ｍＪ１ ）を入
れ、樹脂袋内部の水温を測定した。第４図からも判る様
に表面を被覆していないものは初期冷却効果はあるが、
持続性がない事が判る。The cooling effect of the coolants prepared in Table 1 was measured (Figure 4). In the 111 standard method, a resin bag (10 cm x 10 cm) was suspended in air at a constant temperature of 25°C, and a sample (200 g) and a sample (200 g) were placed in the air at 25°C. of water (120 mJ1) was poured into the bag, and the water temperature inside the resin bag was measured. As can be seen from Figure 4, those with uncoated surfaces have an initial cooling effect, but
It turns out that it is not sustainable.
実施例８
実施例１〜３で作成したＮｏｔ 、 Ｎｏ２ 、 Ｎｏ
３各５０ｇと被覆していない硝安各５０ｇを加え、冷却
効果を測定した。（第５図）第５図から判る様に被覆し
、ていない冷却剤と被覆冷却材を混合することによって
、長時間に亙って冷却効果を維持することができる。Example 8 Not, No2, No created in Examples 1 to 3
3 and 50 g each of uncoated ammonium nitrate were added to measure the cooling effect. (FIG. 5) As can be seen from FIG. 5, by mixing the coated and uncoated coolant with the coated coolant, the cooling effect can be maintained for a long time.
測定法は実施例１〜７の場合に同じである。The measurement method is the same for Examples 1-7.
（効果）
本発明によるときは、水に溶解して吸熱を生じる物質と
前記物質表面に設けられた溶出制御膜の作用によって冷
却効果を自在にコントロールすることができる。(Effects) According to the present invention, the cooling effect can be freely controlled by the action of a substance that absorbs heat when dissolved in water and an elution control film provided on the surface of the substance.
第１図は、本発明の実施例で使用した装置の説明図であ
る。
第２〜５図は、本発明の詳細な説明するための溶出率−
経過時間又は温度−経過時間曲線である。
以 上FIG. 1 is an explanatory diagram of an apparatus used in an embodiment of the present invention. Figures 2 to 5 show dissolution rates for detailed explanation of the present invention.
It is an elapsed time or temperature-elapsed time curve. that's all
Claims (5)
、前記物質の表面に設けられた溶出制御膜とからなる持
続型冷却剤。(1) A continuous cooling agent comprising a substance that causes an endothermic reaction when dissolved in water and an elution control film provided on the surface of the substance.
質微粒子からなり、必要に応じてこれにエチレン酢酸ビ
ニル共重合体又は水溶性ポリマーを添加した組成物から
なる特許請求の範囲第（１）項記載の冷却剤。(2) Claim (1) in which the elution control membrane is composed of a polyolefin and water-insoluble mineral fine particles, and optionally an ethylene-vinyl acetate copolymer or a water-soluble polymer is added thereto. coolant.
ポリマーがポリエチレンオキサイドからなり水不溶性鉱
物質微粒子がタルクからなる特許請求の範囲第（２）項
記載の冷却剤。(3) The coolant according to claim (2), wherein the polyolefin is made of polyethylene, the water-soluble polymer is made of polyethylene oxide, and the water-insoluble mineral particles are made of talc.
０〜９５％である特許請求の範囲第（２）項記載の冷却
剤。(4) The amount of water-insoluble mineral fine particles is 5% of the weight of the composition.
The coolant according to claim (2), which has a content of 0 to 95%.
が尿素、硝酸アンモニウム、塩化アンモニウム、硫酸ア
ンモニウム、炭酸ナトリウム、硝酸ナトリウム、硫酸ナ
トリウム、硝酸カリウム、塩化カリウム、炭酸カリウム
、硫酸カリウム、スルファミン酸グアニジンから選ばれ
た一以上の物質である特許請求の範囲第（１）項記載の
冷却剤。(5) The substance that causes an endothermic reaction when dissolved in water is selected from urea, ammonium nitrate, ammonium chloride, ammonium sulfate, sodium carbonate, sodium nitrate, sodium sulfate, potassium nitrate, potassium chloride, potassium carbonate, potassium sulfate, and guanidine sulfamate. A coolant according to claim 1, which is one or more substances containing:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5782788A JPH01230689A (en) | 1988-03-11 | 1988-03-11 | Persistent coolant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5782788A JPH01230689A (en) | 1988-03-11 | 1988-03-11 | Persistent coolant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01230689A true JPH01230689A (en) | 1989-09-14 |
Family
ID=13066759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5782788A Pending JPH01230689A (en) | 1988-03-11 | 1988-03-11 | Persistent coolant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01230689A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03230072A (en) * | 1990-02-01 | 1991-10-14 | Shinji Ito | Cooling sheet |
| US5261241A (en) * | 1991-02-08 | 1993-11-16 | Japan Pionics Co., Ltd. | Refrigerant |
| US5431022A (en) * | 1993-10-05 | 1995-07-11 | Kabushiki Kaisha Nichiwa | Cooling bag |
| WO2001039704A1 (en) * | 1999-11-30 | 2001-06-07 | The Procter & Gamble Company | Cooling pad |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58187482A (en) * | 1982-04-27 | 1983-11-01 | Kashiwa Kagaku Kogyo:Kk | Portable cooling agent |
| JPS603040A (en) * | 1983-06-17 | 1985-01-09 | Matsushita Electric Ind Co Ltd | Data storing method |
| JPS6153214A (en) * | 1983-08-16 | 1986-03-17 | ザ ウエルカム フアウンデ−シヨン リミテツド | Novel composition |
| JPS63259365A (en) * | 1987-04-13 | 1988-10-26 | ト−ヨ−カネツ株式会社 | Cooling method controlling endothermic reaction |
-
1988
- 1988-03-11 JP JP5782788A patent/JPH01230689A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58187482A (en) * | 1982-04-27 | 1983-11-01 | Kashiwa Kagaku Kogyo:Kk | Portable cooling agent |
| JPS603040A (en) * | 1983-06-17 | 1985-01-09 | Matsushita Electric Ind Co Ltd | Data storing method |
| JPS6153214A (en) * | 1983-08-16 | 1986-03-17 | ザ ウエルカム フアウンデ−シヨン リミテツド | Novel composition |
| JPS63259365A (en) * | 1987-04-13 | 1988-10-26 | ト−ヨ−カネツ株式会社 | Cooling method controlling endothermic reaction |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03230072A (en) * | 1990-02-01 | 1991-10-14 | Shinji Ito | Cooling sheet |
| US5261241A (en) * | 1991-02-08 | 1993-11-16 | Japan Pionics Co., Ltd. | Refrigerant |
| US5431022A (en) * | 1993-10-05 | 1995-07-11 | Kabushiki Kaisha Nichiwa | Cooling bag |
| WO2001039704A1 (en) * | 1999-11-30 | 2001-06-07 | The Procter & Gamble Company | Cooling pad |
| WO2001039705A1 (en) * | 1999-11-30 | 2001-06-07 | The Procter & Gample Company | Cooling pad |
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