PRODUCTION OF SPHERICAL WATER-CONTAINING GEL

Japanese Patent JP3763904

B2

PROBLEM TO BE SOLVED: To obtain the subject gel which shows a good inhabitation of microorganisms, increased durability and is useful as a support for waste water treatment by spheroidizing liquid drops of a specific mixed aqueous solution and actualizing the drops.
SOLUTION: Liquid drops containing (A) polyvinyl alcohol and (B) a water-soluble alginate salt are brought into contact with an aqueous solution containing (C) an aldehyde and (D) an acid to make the liquid drops spherical and simultaneously effect actualization. For example, in the component A, the average polymerization degree is set to ≥1,000, the saponification degree is set to ≤95mol%, and the concentration is set to 1-40wt.%. As the component B, sodium alginate is used in a concentration 1-10wt.%, glyoxal is used as the component C and hydrochloric acid or the like is used as the component D.

WO/2020/196186	MODIFIED VINYL ACETAL RESIN FOR LAMINATED GLASS INTERLAYER FILM
JPH0699499	[Title of Invention] A method for purifying water-soluble polyvinyl acetal.

Hiroaki Fujii
Yasuhiro Baba
Kamata Satomi
Keiko Oka

JP28961296A

April 05, 2006

October 31, 1996

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KURARAY CO.,LTD.

C08F8/28; C08L29/04; C08F16/06; C08L5/04; (IPC1-7): C08F16/06; C08F8/28

JP7041516A
JP8116974A

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