EP 0323732 A2 19890712 - Cellulosic fibre - and chitosan-based composite material and a method for the preparation thereof.
Title (en)
Cellulosic fibre - and chitosan-based composite material and a method for the preparation thereof.
Title (de)
Zusammengesetztes Material aus Cellulosefasern und Chitosan und Verfahren zu seiner Herstellung.
Title (fr)
Matière composite à base de fibres cellulosiques et de chitosane et son procédé de préparation.
Publication
Application
Priority
JP 158888 A 19880106
Abstract (en)
The composite material of the invention is a sheet of cellulose fibres impregnated with chitosan of at least 40% deacetylation and further impregnated with a higher fatty acid such as stearic acid by treatment with an organic solution thereof. The composite sheet of the invention differs from conventional paper and films of plastic resins in having a high strength even in a wet condition and still is biodegradable, for example, in wet soils so that no problems of environmental pollution are caused by the waste thereof left in the environment. Therefore, the composite sheet of the invention is useful as a wrapping material for foods, a sheet material for agricultural use and other temporary or seasonal uses.
IPC 1-7
IPC 8 full level
D06M 15/03 (2006.01); D06M 13/02 (2006.01); D06M 13/184 (2006.01); D06M 13/188 (2006.01); D21H 17/14 (2006.01); D21H 17/24 (2006.01); D21H 17/53 (2006.01); D21H 19/10 (2006.01); D21H 23/02 (2006.01); D21H 27/00 (2006.01); D21H 27/10 (2006.01); D06M 101/00 (2006.01); D06M 101/02 (2006.01); D06M 101/06 (2006.01); D06M 101/08 (2006.01)
CPC (source: EP)
D21H 17/14 (2013.01); D21H 17/24 (2013.01); D21H 17/53 (2013.01); D21H 23/02 (2013.01); D21H 27/10 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0323732 A2 19890712; EP 0323732 A3 19910403; EP 0323732 B1 19920722; AT E78535 T1 19920815; CA 1330916 C 19940726; DE 3873061 D1 19920827; DE 3873061 T2 19921203; JP H026689 A 19900110
DOCDB simple family (application)
EP 88312124 A 19881221; AT 88312124 T 19881221; CA 587447 A 19890103; DE 3873061 T 19881221; JP 23759988 A 19880921