Process for water-insolubilization of molded pullulan

Details Process for water-insolubilization of molded pullulan Process for water-insolubilization of molded pullulan

C - Chemistry, Metallurgy

09

K

6/99

C09K 3/00 (2006.01) C08B 37/00 (2006.01) C08J 7/12 (2006.01)

Patent

CA 1042609

ABSTRACT OF THE DISCLOSURE A molded pullulan can he water-insolubilized while retaining its excellent properties such as transparency, toughness, low gas permeability and non-pollution-causing property by treatment with, as the combination of a cross- linking agent with a catalyst, wherein the said combination comprises at least one of the combinations of (1) formaldehyde with zinc chloride, (2) glyoxal with magnesium chloride, and (3) gaseous formaldehyde or glyoxal with hydrogen chloride gas or sulfurous acid gas, the crosslinking agent being used in an amount of 1 to 300 parts by weight per 100 parts by weight of the molded pullulan, and the catalyst being used in an amount of 0.001 to 5 parts by weight per 100 parts by weight of the formaldehyde or glyoxal.

220963

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