Thermoplastic and polymer foams and method of preparation...

Details Thermoplastic and polymer foams and method of preparation... Thermoplastic and polymer foams and method of preparation...

2005-05-18

2009-12-29

Woodward, Ana L (Department: 1796)

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

Synthetic resins

Cellular products or processes of preparing a cellular...

C521S050000, C521S080000, C521S081000, C521S082000, C521S084100, C521S091000, C521S097000, C521S109100, C521S122000, C521S130000, C521S134000, C521S138000, C523S128000, C524S445000, C524S449000, C525S054240, C527S300000, C527S305000, C527S315000

Reexamination Certificate

active

07638560

ABSTRACT:
A foamed starch-polyester graft copolymer and chemically modified starch-polyester graft copolymer composition comprising a chemically modified starch or chemically modified starch-nanoclay product is described. The composition can be produced continuously in a twin-screw co-rotating extruder in the presence of a blowing agent. The foams are biodegradable.

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