Biodegradable and/or compostable compositions of blends of bio-based starch mixed esters and biodegradable and/or compostable polymers and methods of making them are described. The blend may include from about 20% to about 90% of the described starch mixed esters and from about 10% to about 80% of at least one other biodegradable and/or compostable polymer other than the bio-based starch mixed ester.

A method for obtaining an improved plasticized material results from two differentiated steps: an esterification reaction for synthesizing a polycarboxylic acid ester oligomer in the presence of excess polyol and a catalyst, and a second step of gelatinization and plasticization at temperatures above 90? C. involving a starch mixed with water and with the polycarboxylic acid ester oligomer with excess polyol obtained in the previous step, and a coadjuvant. The catalyst used in the esterification reaction is the same as the coadjuvant used in the gelatinization and plasticization reaction. The plasticized material obtained with this method has a higher stability and a lower migration rate than known plasticized materials.

A method for obtaining an improved plasticized material results from two differentiated steps: an esterification reaction for synthesizing a polycarboxylic acid ester oligomer in the presence of excess polyol and a catalyst, and a second step of gelatinization and plasticization at temperatures above 90? C. involving a starch mixed with water and with the polycarboxylic acid ester oligomer with excess polyol obtained in the previous step, and a coadjuvant. The catalyst used in the esterification reaction is the same as the coadjuvant used in the gelatinization and plasticization reaction. The plasticized material obtained with this method has a higher stability and a lower migration rate than known plasticized materials.

New plasticized compositions comprising cellulose acetate The present invention concerns a composition comprising: cellulose acetate, starch acetate, and at least one plasticizer, wherein cellulose acetate is present in an amount of at least 50% by weight with respect to the total weight of cellulose acetate, starch acetate and plasticizer(s), and wherein said at least one plasticizer is present in an amount of at most 18% by weight with respect to the total weight of cellulose acetate, starch acetate and plasticizer(s). The present invention also relates to a process for the manufacture of a plasticized article, to the use of said composition for producing a plasticized article, and to the use of starch acetate to prevent or diminish the exudation of one or more plasticizers from plastic materials containing cellulose acetate and such plasticizer(s), and/or to increase the maximal use temperature in application for a material comprising cellulose acetate.

New plasticized compositions comprising cellulose acetate The present invention concerns a composition comprising: cellulose acetate, starch acetate, and at least one plasticizer, wherein cellulose acetate is present in an amount of at least 50% by weight with respect to the total weight of cellulose acetate, starch acetate and plasticizer(s), and wherein said at least one plasticizer is present in an amount of at most 18% by weight with respect to the total weight of cellulose acetate, starch acetate and plasticizer(s). The present invention also relates to a process for the manufacture of a plasticized article, to the use of said composition for producing a plasticized article, and to the use of starch acetate to prevent or diminish the exudation of one or more plasticizers from plastic materials containing cellulose acetate and such plasticizer(s), and/or to increase the maximal use temperature in application for a material comprising cellulose acetate.

New plasticized compositions comprising cellulose acetate The present invention concerns a composition comprising: cellulose acetate, starch acetate, and at least one plasticizer, wherein cellulose acetate is present in an amount of at least 50% by weight with respect to the total weight of cellulose acetate, starch acetate and plasticizer(s), and wherein said at least one plasticizer is present in an amount of at most 18% by weight with respect to the total weight of cellulose acetate, starch acetate and plasticizer(s). The present invention also relates to a process for the manufacture of a plasticized article, to the use of said composition for producing a plasticized article, and to the use of starch acetate to prevent or diminish the exudation of one or more plasticizers from plastic materials containing cellulose acetate and such plasticizer(s), and/or to increase the maximal use temperature in application for a material comprising cellulose acetate.

Disclosed is a molded article including a modified fibroin and a water resistance-imparting material. The modified fibroin and the water resistance-imparting material may be covalently bonded.

A process for the manufacture of an acylated polymer composition including amylose and/or amylopectin, including a pre-treatment step in the presence of an acid and a hydroxycarboxylic acid, subsequent acylation and, preferably, a post-treatment step with an acid. The products obtained are useful as additives in inks, varnishes, lacquers, coatings, thickeners, adhesives or binders.

A process for the manufacture of an acylated polymer composition including amylose and/or amylopectin, including a pre-treatment step in the presence of an acid and a hydroxycarboxylic acid, subsequent acylation and, preferably, a post-treatment step with an acid. The products obtained are useful as additives in inks, varnishes, lacquers, coatings, thickeners, adhesives or binders.

The present invention provides a water-absorbing resin that is excellent in water absorption performance and is easy to be degraded. The present invention relates to a water-absorbing resin, which is a crosslinked product of a glucose polymer and forms a physical gel upon absorption of water, wherein the glucose polymer is a starch or a partially degraded starch, with an acidic group introduced therein.