Compositions comprising linear polyhydroxyalkanoates and biodegradable aromatic/aliphatic polyesters are disclosed, as well as methods for using same, and articles made therefrom.
대표청구항▼
1. A composition comprising: a blend comprising biologically-produced poly-3-hydroxybutyrate, poly(3-hydroxybutyrate)-co-poly(4-hydroxybutyrate) with a 10-13% 4-hydroxybutyrate content, and poly(3-hydroxybutyrate)-co-poly(4-hydroxybutyrate) with a 26-35% 4-hydroxybutyrate content;a biodegradable aro
1. A composition comprising: a blend comprising biologically-produced poly-3-hydroxybutyrate, poly(3-hydroxybutyrate)-co-poly(4-hydroxybutyrate) with a 10-13% 4-hydroxybutyrate content, and poly(3-hydroxybutyrate)-co-poly(4-hydroxybutyrate) with a 26-35% 4-hydroxybutyrate content;a biodegradable aromatic/aliphatic polyester; anda nucleating agent, wherein the composition is a blend, wherein the biodegradable aromatic/aliphatic polyester is a co polymer of: i) at least one aliphatic dicarboxylic acid; and/orii) at least one aromatic dicarboxylic acid; andiii) a dihydroxy compound. 2. The composition of claim 1, wherein the aliphatic dicarboxylic acid is selected from succinic acid, glutaric acid, dimethyl glutaric acid, adipic acid, sebacic acid or azelaic acid; wherein the aromatic dicarboxylic acid is selected from terephthalic acid or naphthalene dicarboxylic acid; and wherein the dihydroxy compound is selected from C2-C6 alkanediols and C5-C10 cycloalkanediols ethylene glycol, propylene glycol, 1,4-butanediol, 1,6 hexanediol, or 1,4 cyclohexanedimethanol. 3. The composition of claim 1, wherein the biodegradable aromatic/aliphatic polyester is selected from: polybutylene adipate terephthalate,polyethylene adipate terephthalate,polybutylene succinate terephthalate, andpolyethylene succinate terephthalate. 4. The composition of claim 1, wherein the composition comprises at least two aromatic/aliphatic polyesters. 5. The composition of claim 1, wherein from 5 to 95 percent by weight of the total polymer components of the composition is the biodegradable aromatic/aliphatic polyester or wherein from 10 to 50 percent by weight of the total polymer components of the composition is the biodegradable aromatic/aliphatic polyester. 6. The composition of claim 1, wherein from 5 to 95 percent by weight of the composition is the blend of two or more biologically-produced polyhydroxyalkanoate copolymers. 7. The composition of claim 1, wherein the biodegradable aromatic/aliphatic polyester is branched. 8. The composition of claim 1, wherein from 50 to 90 percent by weight of the total polymer components of the composition is the blend of two or more linear biologically-produced polyhydroxyalkanoate copolymers. 9. The composition of claim 1, wherein the nucleating agent is selected from cyanuric acid, carbon black, mica talc, silica, boron nitride, clay, calcium carbonate, synthesized silicic acid or a salt thereof, a metal salt of organophosphates and a kaolin aluminum hydroxy diphosphate or the nucleating agent has a chemical formula selected from the group consisting of and combinations thereof, wherein each R1 is independently H, NR2R2, OR2, SR2, SOR2, SO2R2, CN, COR2, CO2R2, CONR2R2, NO2, F, Cl, Br, or I; and each R2 is independently H or C1-C6 alkyl. 10. The composition of claim 1, wherein the blend of at least two or more linear biologically-produced polyhydroxyalkanoate copolymers comprises about 36% poly(3-hydroxybutyrate), blended with about 24% (poly(3-hydroxybutyrate-co-11%-poly(4-hydroxybutyrate), and about 40% (poly(3-hydroxybutyrate-co-28%-poly(4-hydroxybutyrate). 11. The composition of claim 1, wherein the poly-3-hydroxybutyrate-co-4-hydroxybutyrate comprises a 10% 4-hydroxybutyrate content, an 11% 4-hydroxybutyrate content, a 12% 4-hydroxybutyrate content, or a 13% 4-hydroxybutyrate content. 12. A method of forming a polymer resin pellet comprising: melting the composition of claim 1 under suitable conditions and forming a polymer resin pellet. 13. An article comprising the composition of claim 1, wherein the article is in the form of a film. 14. A blown film comprising: a blend comprising biologically-produced poly-3-hydroxybutyrate, poly(3-hydroxybutyrate)-co-poly(4-hydroxybutyrate) with a 10-13% 4-hydroxybutyrate content, and poly(3-hydroxybutyrate)-co-poly(4-hydroxybutyrate) with a 26-35% 4-hydroxybutyrate content;a biodegradable aromatic/aliphatic polyester; anda nucleating agent, wherein the composition is a blend, wherein the biodegradable aromatic/aliphatic polyester is a co polymer of: i) at least one aliphatic dicarboxylic acid; and/orii) at least one aromatic dicarboxylic acid; andiii) a dihydroxy compound. 15. The blown film of claim 14, wherein the aliphatic dicarboxylic acid is selected from succinic acid, glutaric acid, dimethyl glutaric acid, adipic acid, sebacic acid or azelaic acid; wherein the aromatic dicarboxylic acid is selected from terephthalic acid or naphthalene dicarboxylic acid; and wherein the dihydroxy compound is selected from C2-C6 alkanediols and C5-C10 cycloalkanediols ethylene glycol, propylene glycol, 1,4-butanediol, 1,6 hexanediol, or 1,4 cyclohexanedimethanol. 16. The blown film of claim 14, wherein the biodegradable aromatic/aliphatic polyester is selected from: polybutylene adipate terephthalate,polyethylene adipate terephthalate,polybutylene succinate terephthalate, andpolyethylene succinate terephthalate.
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