Compositions: coating or plastic – Coating or plastic compositions – Carbohydrate or derivative containing
Reexamination Certificate
2006-12-26
2006-12-26
Brunsman, David M. (Department: 1755)
Compositions: coating or plastic
Coating or plastic compositions
Carbohydrate or derivative containing
C106S207500, C536S048000
Reexamination Certificate
active
07153354
ABSTRACT:
A chemically modified plasticized starch (CMPS) is prepared by reacting starch with an organic dibasic acid or an anhydride of the acid in the presence of a plasticizer using optional free radical initiators, and optionally with the incorporation of nano clays in the reactive extrusion process. The starch is thermoplastic and has a lower viscosity than the traditional thermoplastic starch. The CMPS is useful in preparing starch polymer compositions which are at least partially biodegradable.
REFERENCES:
patent: 3732207 (1973-05-01), Kovats
patent: 4011392 (1977-03-01), Rudolph et al.
patent: 4231803 (1980-11-01), Bovier et al.
patent: 2003/0141637 (2003-07-01), Kesselmans et al.
Balakrishnan Sunder
Dubois Philippe
Nabar Yogaraj
Narayan Raamani
Raquez Jean-Marie
Board of Trustees of Michigan State University
Brunsman David M.
McLeod Ian C.
Merritt Steven E.
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