Method for producing polyamide by coordinated anionic ring-opening polymerization, and polyamide produced thereby
AssigneeHanwha Chemical Corporation
InventorsHye Yeon Lee, Dae Hak Kim, Seung Hoe Do, Jin Seo Lee, Kyung Ho Kwon, Kyoung Won Yim, Do Kyoung Kim
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Abstract
The present invention relates to a method for producing a polyamide by coordinated anionic ring-opening polymerization and a polyamide produced thereby, wherein metal alkoxide as an initiator and metal hydride as a catalyst are added to enable polymerization having a narrow molecular weight distribution and uniform molecular weight within a short polymerization reaction time at a low temperature, without a separate vacuum process, as compared with an existing polymerization method.
Claims12
A method for producing a polyamide from a lactam by a coordinated anionic ring-opening polymerization reaction, comprising subjecting a reaction mixture comprising
- the lactam, and
- based on arts by weight of the lactam in its entirety, 0.01 parts by weight to 20 parts by weight of a metal alkoxide as an initiator, 0.01 parts by weight to 20 parts by weight of a metal hydride as a catalyst, and 0.002 parts by weight to 20 parts weight of carbon dioxide (CO2) as an activator,
- to a coordinated anionic ring-opening polymerization reaction.
Dependencies are inferred from the claim text.