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US 10,370,503 B2Granted
Modified poly(alkylene carbonate) composition
AssigneeNorner IP AS
InventorsCarlos Barreto Soler, Rodney W. Rychwalski, Siw Bodil Fredriksen
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Abstract
A process for the manufacture of a modified poly(alkylene carbonate) comprising compounding i) at least one poly(alkylene carbonate) and at least one modifying agent having at least three carboxylic acid groups, or ii) at least one carboxylic acid group and at least one anhydride group, or iii) at least two anhydride groups, at a temperature of 120 to 240° C.
Claims18
A composition comprising a poly(alkylene carbonate) having a Mn of 20,000 g/mol or more which has been modified by compounding the poly(alkylene carbonate) with a modifying agent, wherein the modifying agent has:
- i) at least three carboxylic acid groups, ii) at least one carboxylic acid group and at least one anhydride group, or iii) at least two anhydride groups;
- and wherein said composition further comprises a particulate filler selected from the group consisting of carbon black, carbon nanotubes, cellulose, layered or tube like aluminosilicates, layered double hydroxides, metal oxides, boron nitride, mica, polyhedral oligomeric silsesquioxane, silica, calcium carbonate, talc, and graphitic fillers.
Dependencies are inferred from the claim text.