C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 3/00 (2006.01) C08G 63/02 (2006.01) C08G 63/12 (2006.01) C08L 3/02 (2006.01) C11C 3/04 (2006.01)
Patent
CA 2625240
Thermoplastic polymer compositions comprising starch and articles made therefrom are water stable or may be rendered so. One method of making water stable thermoplastic compositions comprises the steps of mixing destructured starch with polyhydric alcohol and acid, and forming an ester condensation reaction product from at least a portion of the polyhydric alcohol and acid. In some embodiments, a pre-polymer formed from the ester condensation reaction may be provided as a pre-polymer that is mixed with the starch.
L'invention concerne des compositions polymères thermoplastiques comprenant de l'amidon et des articles à base de ces compositions qui sont stables à l'eau ou que l'on peut rendre stables à l'eau. Un procédé de fabrication de compositions thermoplastiques stables à l'eau consiste à mélanger de l'amidon déstructuré avec de l'alcool polyhydrique et de l'acide, et à former un produit de réaction de condensation d'esters à partir d'au moins une partie d'alcool polyhydrique et d'acide. Dans certains modes de réalisation, un pré-polymère formé par la réaction de condensation d'esters peut être fourni en tant que pré-polymère que l'on mélange avec de l'amidon.
Allen William M. Jr.
Knapmeyer James T.
Noda Isao
Satkowski Michael M.
Mbm Intellectual Property Law Llp
The Procter & Gamble Company
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