Biodegradable polymer

Details Biodegradable polymer Biodegradable polymer

2007-03-01

2009-02-24

Eashoo, Mark (Department: 1796)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

Reexamination Certificate

active

07495044

ABSTRACT:
A biodegradable polymer is disclosed having the composition g) from 8 to 80% by weight of a starch modified to include an hydroxyalkyl C2-6group or modified by reaction with an anhydride of a dicarboxylic acid, preferably hydroxypropylated high amylose starch, a) from 0 to 87.9% of starch, b) from 4 to 11% by weight of a water soluble polymer selected from polyvinylacetate, polyvinyl alcohol and copolymers of ethylene and vinylalcohol which have a melting point compatible with the molten stat of the starch components, c) from 0 to 20% by weight of a polyol plasticiser, preferably glycerol, d) from 0.1 to 1.5% by weight of a C12-22fatty acid or salt, preferably stearic acid and, e) 0 to 12% added water. The polymers are suitable as biodegradable rigid sheet or flexible film materials for use in packaging foodstuffs.

REFERENCES:
patent: 3033853 (1962-05-01), Klug
patent: 3949145 (1976-04-01), Otey et al.
patent: 4125495 (1978-11-01), Griffin
patent: 4863655 (1989-09-01), Lacourse et al.
patent: 5314754 (1994-05-01), Knight
patent: 5316578 (1994-05-01), Buehler et al.
patent: 5322866 (1994-06-01), Mayer et al.
patent: 5362777 (1994-11-01), Tomka et al.
patent: 5374304 (1994-12-01), Frische et al.
patent: 5393804 (1995-02-01), George et al.
patent: 5436078 (1995-07-01), Buhler et al.
patent: 5444107 (1995-08-01), Ajioka et al.
patent: 5449708 (1995-09-01), Schiltz
patent: 5462983 (1995-10-01), Bloembergen et al.
patent: 5552461 (1996-09-01), Redd et al.
patent: 5569692 (1996-10-01), Bastioli et al.
patent: 5691403 (1997-11-01), Shitaohzono et al.
patent: 5760118 (1998-06-01), Sinclair et al.
patent: 5821286 (1998-10-01), Xu et al.
patent: 5852114 (1998-12-01), Loomis et al.
patent: 5869647 (1999-02-01), Narayan et al.
patent: 5874486 (1999-02-01), Bastioli et al.
patent: 6200404 (2001-03-01), Andersen et al.
patent: 6235815 (2001-05-01), Loercks et al.
patent: 6284838 (2001-09-01), Silbiger
patent: 6369215 (2002-04-01), Peltonen et al.
patent: 6387991 (2002-05-01), Hayes
patent: 8-245836 (1996-09-01), None
patent: 8-325447 (1996-12-01), None
patent: 10-087846 (1998-04-01), None
patent: 10-173341 (1998-06-01), None
patent: WO 92/16583 (1992-10-01), None
patent: WO 9403543 (1994-02-01), None
patent: WO-98-31523 (1998-07-01), None
Equistar, SARA Title III annual Notification; Dec. 6, 2002; Material Safety Data Sheet Ultrathene UE 65467; Section 9; Physical and Chemical Properties, Water Solubility, (p. 4 of 7).
Eval Resin Material Safety Data Sheet; Nov. 17, 2000; Section VI; Physical Data, Solubility in Water.
Hawley's Condensed Chemical Dictionary, Thirteenth Edition Revised by Richard J. Lewis, sr., John Wiley & Sons, Inc., New York, 1997, pp. 487 and 1046.

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