Biologically degradable polymer mixture

Details Biologically degradable polymer mixture Biologically degradable polymer mixture

1997-03-17

1998-12-01

Reddick, Judy M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 18, 524 37, 524 39, 524 40, 524 46, 524 52, 524 41, 525 541, 525 5421, 525 5424, C08L 300

Patent

active

058440232

ABSTRACT:
A biologically degradable polymer mixture is proposed which consists essentially of starch and at least one hydrophobic polymer. The hydrophobic polymer is in this connection at least substantially biologically degradable and thermoplastically processable and the mixture with the starch comprising a polymer phase mediator or a macromolecular dispersing agent so that the starch is present in the mixture as disperse phase with the hydrophobic polymer as continuous phase, and the phase mediator or the dispersing agent is responsible for the molecular coupling of the two phases. As starch there is preferably used thermoplastic starch which has been prepared substantially with the exclusion of water by means of sorbitol or glycerol. The production of the biologically degradable polymer mixture is also carried out substantially with the exclusion of water.

REFERENCES:
patent: 5095054 (1992-03-01), Lay et al.
patent: 5108807 (1992-04-01), Tucker
patent: 5234977 (1993-08-01), Bastioli et al.
patent: 5286770 (1994-02-01), Bastioli et al.

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