Aliphatic polycarbonate-polyurethane composition and aliphatic polycarbonate-polyurethane resin

1. A polymer composition comprising:

a crosslinked aliphatic polycarbonate having a weight average molecular weight of 30,000 to 250,000 g/mol and produced by reacting carbon dioxide with one or more epoxide compounds; and

a polyurethane penetrated into the crosslinked aliphatic polycarbonate to form an interpenetrating polymer network structure.

2. The polymer composition of claim 1 , wherein the aliphatic polycarbonate is polypropylene carbonate or polyethylene carbonate.

3. The polymer composition of claim 1 , further comprising any one selected from the group consisting of an epoxy compound and an acryl compound, or a mixture thereof.

4. The polymer composition of claim 3 , wherein

the epoxy compound is at least one selected from the group consisting of a glycidyl ether-based, a glycidyl ester-based, a glycidyl amine-based, a linear aliphatic, and cycloaliphatic compounds, and

the acryl compound is at least one selected from the group consisting of methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, heptyl acrylate, 2-ethyl hexyl acrylate, octyl acrylate, methyl methacrylate, ethyl methacrylate, decyl methacrylate, and 2-ethyl butyl methacrylate.

5. A molded article using the polymer composition of claim 1 .

6. The molded article of claim 5 , wherein it is selected from the group consisting of artificial leather, a film, expandable foam and sheet.

7. A method of producing a polymer composition, the method comprising:

reacting a polycarbonate polyol having a weight average molecular weight of 200 to 30,000 g/mol with an isocyanate compound to form a urethane prepolymer;

mixing the urethane prepolymer with an aliphatic polycarbonate having a weight average molecular weight of 30,000 to 250,000 g/mol and a curing agent to form a mixture; and

curing the mixture to form a polymer composition having an interpenetrating polymer network (IPN) structure in which a polyurethane derived from the urethane prepolymer is penetrated into a crosslinked aliphatic polycarbonate derived from the aliphatic polycarbonate.

8. The method of claim 7 , wherein the aliphatic polycarbonate is produced by reacting carbon dioxide with one or more epoxide compounds.

9. The method of claim 8 , wherein the isocyanate compound is at least one selected from the group consisting of 2,4-trilene diisocyanate, 2,6-trilene diisocyanate, hydrogenated trilene diisocyanate, 1,3-xylene diisocyanate, 1,4-xylene diisocyanate, diphenyl methane-4,4-diisocyanate, 1,3-bisisocyanate methyl cyclohexane, tetramethyl xylene diisocyanate, 1,5-naphthalene diisocyanate, 2,2,4-trimethyl hexamethylene diisocyanate, 2,4,4-trimethyl hexamethylene diisocyanate, and triphenylmethane triisocyanate.

10. The method of claim 7 , wherein the curing agent is at least one selected from the group consisting of an isocyanate-based, a melamine-based, an amine-based, an acid anhydride-based, an imidazole-based, and a mercaptan-based compound.

11. The method of claim 8 , wherein the epoxide compounds are selected from the group consisting of (C2-C20)alkylene oxide and (C8-C20)styrene oxide.

12. The method of claim 11 , wherein the epoxide is substituted with halogen, (C1-C20)alkyloxy, (C6-C20)aryloxy, or (C6-C20)aryl(C1-C20)alkyl(aralkyl)oxy.