C - Chemistry – Metallurgy – 12 – P
Patent
C - Chemistry, Metallurgy
12
P
195/138, 195/59
C12P 1/00 (2006.01) A01G 13/02 (2006.01) C08J 5/18 (2006.01) C08K 5/00 (2006.01) C08L 23/04 (2006.01) C08L 101/00 (2006.01)
Patent
CA 2027063
ABSTRACT OF THE DISCLOSURE A biologically degradable film is prepared consisting of a synthetic polymer and a biologically degradable polymer. The biologically degradable polymer is divided into small particles by means of enzymes produced by microbes in the form of spores, which enzymes split and release small molecules from the surface of the biopolymer particles. After achieving desired particle size, an emulsion is formed with vegetable oil and particles coated with enzyme protein become coated with vegetable oil, which at the same time interrupts the degradation of the biopolymer particles by the enzyme. The coated particles with the oil is separated from the suspension to remove small molecules after which the particles are redried and then pulverized. The final film is prepared in a film extruder in which the biopolymer is mixed with the synthetic polymer and possibly with other additives that are generally used in forming polymer films. The invention also relates to the films produced by the method, which films contain microbes in the form of spores.
Biodata Oy
Sim & Mcburney
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