Copolymer and preparation method of copolymer
AssigneeLG Chem, Ltd.
InventorsHyungil PARK, Minsung PARK, Sai Bom PARK, Seongjin KWON, Donggyun KANG, Hun PARK
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Abstract
The present disclosure relates to a copolymer having excellent mechanical properties together with environmental affinity and biodegradability, and also having excellent adhesive properties at low temperatures, and a preparation method of the copolymer.
Claims15
A copolymer comprising a repeating unit represented by the following Chemical Formula 1, a repeating unit represented by the following Chemical Formula 2, and a repeating unit represented by the following Chemical Formula 3,
- wherein the repeating unit represented by the Chemical Formula 2 is contained in an amount of 20 moles or more and 200 moles or less relative to 1 mole of the repeating unit represented by the Chemical Formula 1:
- wherein in the Chemical Formula 1,
- L1 is a substituted or unsubstituted alkylene group having 3 or less carbon atoms, and
- n is an integer of 5 or more,
- in the Chemical Formula 2,
- L2 is a substituted or unsubstituted alkylene group having 2 or more carbon atoms, and
- in the Chemical Formula 3,
- L3 is a substituted or unsubstituted alkylene group having 1 or more carbon atoms or arylene group having 1 or more carbon atoms.
A method for preparing a copolymer, the method comprising subjecting a monomer represented by the following Chemical Formula 7 to ring-opening polymerization in the presence of a compound represented by the following Chemical Formula 6 to prepare a prepolymer;
- and
- reacting the prepolymer with a monomer represented by the following Chemical Formula 8 to prepare the copolymer,
- wherein the compound represented by Chemical Formula 7 is contained in an amount of 20 moles or more and 200 moles or less relative to 1 mole of the compound represented by the Chemical Formula 6:
- wherein in the Chemical Formula 6,
- L1 is a substituted or unsubstituted alkylene group having 3 or less carbon atoms, and
- n is an integer of 5 or more,
- wherein in the Chemical Formula 7,
- L2 is a substituted or unsubstituted alkylene group having 2 or more carbon atoms,
- wherein in the Chemical Formula 8,
- L3 is a substituted or unsubstituted alkylene group having 1 or more carbon atoms or arylene having 1 or more carbon atoms.
Dependencies are inferred from the claim text.