JPS57190072A - Production of low-temperature insulation gel - Google Patents
Production of low-temperature insulation gelInfo
- Publication number
- JPS57190072A JPS57190072A JP7393881A JP7393881A JPS57190072A JP S57190072 A JPS57190072 A JP S57190072A JP 7393881 A JP7393881 A JP 7393881A JP 7393881 A JP7393881 A JP 7393881A JP S57190072 A JPS57190072 A JP S57190072A
- Authority
- JP
- Japan
- Prior art keywords
- water
- gel
- low
- temperature insulation
- casted
- 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
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
PURPOSE: An aqueous solution of specific polyvinyl alcohol is casted in a vessel, frozen into a form and the formed product is dried in vacuum without melting until the water content reaches a specific level to produce the gel for low-temperature insulation with high elasticity and high mechanical strength.
CONSTITUTION: A polyvinyl alcohol of more than 95mol% saponification degree and more than 1,500 viscosity-average polymerization degree is dissolved in water, preferably in 7W15wt% concentration, casted into a vessel of an appropriate shape, frozen at a temperature lower than -6°C, preferably at -20W -55°C. The formed product is dried in vacuum without melting until the dehydration exceeds 5%, then when necessary, it is dipped in water to adjust the water content to 70W95% based on the wet product to give the objective gel. The hydrated gel is brought into contact with a water-soluble inorganic salt such as aqueous magnesium chloride or a water-soluble organic compound such as ethylene glycol to give a non-crosslinkable gel for low-temperature insulation.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7393881A JPS57190072A (en) | 1981-05-16 | 1981-05-16 | Production of low-temperature insulation gel |
| EP82104258A EP0070986B1 (en) | 1981-05-16 | 1982-05-14 | Process for the preparation of gel for use as cooling medium |
| DE8282104258T DE3278911D1 (en) | 1981-05-16 | 1982-05-14 | Process for the preparation of gel for use as cooling medium |
| US07/088,473 US4925603A (en) | 1981-05-16 | 1987-08-19 | Process for the preparation of gel for use as cooling medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7393881A JPS57190072A (en) | 1981-05-16 | 1981-05-16 | Production of low-temperature insulation gel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57190072A true JPS57190072A (en) | 1982-11-22 |
Family
ID=13532552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7393881A Pending JPS57190072A (en) | 1981-05-16 | 1981-05-16 | Production of low-temperature insulation gel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57190072A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4774957A (en) * | 1985-04-26 | 1988-10-04 | Kabushiki Kaisha Toshiba | Material for diagnosis by nuclear magnetic resonance imaging |
| JPH0286606A (en) * | 1988-09-22 | 1990-03-27 | Biomaterial Universe Kk | Production of polyvinyl alcohol hydrogel |
| US7674852B2 (en) | 2004-08-25 | 2010-03-09 | Innogel Ag | Polyvinyl alcohol gels, especially in situ gelling gels |
| CN105802588A (en) * | 2016-04-14 | 2016-07-27 | 成都嘉宝祥生物科技有限公司 | Cold accumulation agent used for medical cold compress physiotherapy and preparation method thereof |
-
1981
- 1981-05-16 JP JP7393881A patent/JPS57190072A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4774957A (en) * | 1985-04-26 | 1988-10-04 | Kabushiki Kaisha Toshiba | Material for diagnosis by nuclear magnetic resonance imaging |
| JPH0286606A (en) * | 1988-09-22 | 1990-03-27 | Biomaterial Universe Kk | Production of polyvinyl alcohol hydrogel |
| US7674852B2 (en) | 2004-08-25 | 2010-03-09 | Innogel Ag | Polyvinyl alcohol gels, especially in situ gelling gels |
| CN105802588A (en) * | 2016-04-14 | 2016-07-27 | 成都嘉宝祥生物科技有限公司 | Cold accumulation agent used for medical cold compress physiotherapy and preparation method thereof |
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