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Title:
COLD-STORAGE MATERIAL WITH EXCELLENT SHAPE STABILITY AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2000/052112
Kind Code:
A1
Abstract:
A cold-storage material with excellent shape stability which is obtained by freezing a composition comprising: 100 parts by weight of a highly water-absorbing resin in which water has been absorbed in an amount of 40 to 150 times by weight the amount of the highly water-absorbing resin on a dry basis; and at least 25 parts by weight of an aqueous polyvinyl alcohol solution having a concentration of 10 wt.% or higher. The process comprises causing a highly water-absorbing resin to absorb water in an amount of 40 to 150 times by weight the amount of the highly water-absorbing resin on a dry basis, separately preparing an aqueous polyvinyl alcohol solution having a concentration of 10 wt.% or higher, subsequently mixing the water-absorbing resin containing water absorbed therein with the aqueous solution to produce a composition for a cold-storage material, and then freezing the resultant composition.

Inventors:
WATANABE KATSUYOSHI (JP)
SATO SEIO (JP)
Application Number:
PCT/JP2000/001445
Publication Date:
September 08, 2000
Filing Date:
March 10, 2000
Export Citation:
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Assignee:
TOYO EIZAI KK (JP)
WATANABE KATSUYOSHI (JP)
SATO SEIO (JP)
International Classes:
C09K5/06; (IPC1-7): C09K5/14
Foreign References:
JPH07124461A1995-05-16
JPH05239449A1993-09-17
JPH04100887A1992-04-02
JPH0489887A1992-03-24
JPH02252788A1990-10-11
JPH01270867A1989-10-30
JPH02132643U1990-11-05
JPH0586361A1993-04-06
JPH0280489A1990-03-20
Attorney, Agent or Firm:
Kotani, Etsuji (Nakanoshima 2-chome Kita-ku Osaka-shi, Osaka, JP)
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