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OwnerJeong Sun KIM, Su Jin IM +5inventors
InventorsJeong Sun KIM, Su Jin IM, Sung Won LEE, Ki Yup KIM, Do Young KIM, Joo Hyun NAM, Ji Hae PARK
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Provided is a biodegradable polyester polymer comprising a polymerization reaction product of an aliphatic dicarboxylic acid, an C6-30 aromatic dicarboxylic acid, an aliphatic diol, and a branching agent, and wherein the biodegradable polyester polymer has a ratio of z-average molecular weight (Mz) to weight average molecular weight (Mw) (“Mz/Mw”) greater than 2 and an easy-tear film including the same. The biodegradable film has excellent mechanical properties to effectively protect a product inside the packaging but also be easily opened in a controlled manner without excessive force and at the same time, provide an environmentally-friendly alternative to non-degradable plastics.
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A biodegradable film comprising a biodegradable polyester polymer, wherein the biodegradable polyester polymer comprises a polymerization reaction product of an aliphatic dicarboxylic acid, an aromatic dicarboxylic acid, an aliphatic diol, and a branching agent, wherein the biodegradable polyester polymer has a ratio of z-average molecular weight (Mz) to weight average molecular weight (Mw) (“Mz/Mw”) greater than 2, wherein the aromatic dicarboxylic acid is a C6-30 aromatic dicarboxylic acid, and wherein the biodegradable polyester polymer has an Mz of about 250,000 g/mol to about 1,000,000 g/mol.
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Dependencies are inferred from the claim text.