Biodegradable plastic composition, a molded article thereof...

Details Biodegradable plastic composition, a molded article thereof... Biodegradable plastic composition, a molded article thereof...

2005-01-25

2005-01-25

Tarazano, D. Lawrence (Department: 1773)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S195000, C524S323000

Reexamination Certificate

active

06846860

ABSTRACT:
A biodegradable plastic composition enabling to stably adjust biodegradation rate, improve hydrolysis resistance and heat resistance, and retain transparency, molded articles thereof and a method for controlling biodegradation rate of the biodegradable plastic. In more detail, a biodegradable plastic composition, characterized in that said composition is made by compounding 100 parts by weight of a biodegradable plastic (A), in particular, an aliphatic type polyester with 0.01 to 5 parts by weight of a carbodiimide compound (B) and 0.01 to 3 parts by weight of an antioxidant (C), in particular, a hindered phenol type antioxidant with a molecular weight of not less than 400 alone or mixed antioxidants of said hindered phenol type antioxidant and a phosphite type antioxidant, a molded article thereof and a method for controlling biodegradation rate of the biodegradable plastic.

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