# US 10,370,503 B2 · Modified poly(alkylene carbonate) composition > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,370,503 B2 - Document ID: US10370503B2 - Status: Granted - Kind: B2 - Application number: 14/760,356 - Filed: 2014-01-10 - Published: 2015-12-17 - Granted: 2019-08-06 - Earliest claimed: 2013-01-11 - Assignees: Norner IP AS - Applicants: Norner IP AS - Inventors: Carlos Barreto Soler; Rodney W. Rychwalski; Siw Bodil Fredriksen - Web page: https://patentgrep.com/patent/US10370503B2 ## CPC - C08J 3/24: Crosslinking, e.g. vulcanising, of macromolecules (mechanical aspects B29C35/00; crosslinking agents C08K) - C08G 64/42: Chemical after-treatment - C08K 3/04: Carbon - C08K 3/041: {Carbon nanotubes} - C08K 3/042: {Graphene or derivatives, e.g. graphene oxides} - C08K 3/26: Carbonates; Bicarbonates - C08K 3/346: {Clay} - C08K 9/04: Ingredients treated with organic substances {(treated with macromolecular compounds C08K9/08)} - C08K 2003/265: {Calcium, strontium or barium carbonate} - C08K 2201/011: Nanostructured additives - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) ## 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. ## Claims ### Claim 1 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. ### Claim 2 (depends on 1) The composition as claimed in claim 1, wherein the modifying agent comprises two anhydride units. ### Claim 3 (depends on 1) The composition as claimed in claim 1, wherein the modifying agent is present in an amount of from 0.05 to 5 wt % relative to the amount of poly(alkylene carbonate) and modifying agent present in total. ### Claim 4 (depends on 1) The composition as claimed in claim 1, wherein the poly(alkylene carbonate) is formed from the copolymerization of an epoxide and carbon dioxide. ### Claim 5 (depends on 1) The composition as claimed in claim 1, wherein the filler is present in an amount of from 0.05 to 70 wt % relative to the total amount of filler and modified poly(alkylene carbonate). ### Claim 6 (depends on 1) The composition as claimed in claim 1, wherein the poly(alkylene carbonate) has an Mw of 5,000 D or more. ### Claim 7 (depends on 1) The composition of claim 1 further comprising a second polymer. ### Claim 8 (depends on 7) The composition as claimed in claim 7, wherein the second polymer is a fluoroelastomer. ### Claim 9 (depends on 1) The composition as claimed in claim 1, wherein the modifying agent comprises pyromellitic dianhydride or benzophenone-3,3′,4,4′-tetracarboxylic dianhydride. ### Claim 10 (depends on 1) The composition as claimed in claim 1, wherein the poly(alkylene carbonate) is formed from the copolymerization of propylene oxide, ethylene oxide, cyclohexene oxide, or mixtures thereof and carbon dioxide. ### Claim 11 (depends on 1) The composition as claimed in claim 1, wherein the filler comprises a multiwalled nanotube, a graphitic filler, calcium carbonate, a montmorillonite nanoclay, a magnesium oxide, a zinc oxide, a zirconium oxide, or a polyhedral oligomeric silsesquioxane. ### Claim 12 (depends on 7) The composition as claimed in claim 7, wherein the second polymer is a polyolefin, polylactic acid, starch, or polyhydroxy acid. ### Claim 13 (depends on 1) The composition as claimed in claim 1 further comprising a plasticizer. ### Claim 14 (depends on 1) The composition as claimed in claim 1 further comprising a second poly(alkylene carbonate) that is different than the first poly(alkylene carbonate). ### Claim 15 (depends on 1) The composition as claimed in claim 1, wherein the filler is a multiwalled nanotube. ### Claim 16 (depends on 1) The composition as claimed in claim 1, wherein the filler is calcium carbonate. ### Claim 17 (depends on 1) The composition as claimed in claim 1, wherein the composition is electrically conductive. ### Claim 18 (depends on 1) An article comprising the composition as claimed in claim 1, wherein the article is a film, molded article, extrusion coated article, foamed article or laminate.