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OwnerSoon Hyeok HONG, Kyungmin CHOIinventors
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The present invention relates to a method for producing a chemically recyclable polyvinyl alcohol copolymer through ring-opening metathesis polymerization of cyclohexene derivatives, wherein the ring strain energy of cyclohexene monomers is increased using trans-fused cyclic carbonate groups to perform ring-opening metathesis polymerization (ROMP) while efficiently controlling same to produce a polyvinyl alcohol copolymer with a well-defined structure of 1,2-diol per six carbon atoms and exhibiting high hydrolytic stability, excellent oxygen protective properties, and processability. In addition, the polyvinyl alcohol copolymer can be chemically recycled into 1,2-diol containing cyclohexene through the ring-closing metathesis of the polyvinyl alcohol polymer, and useful compounds, including industrially useful α,ω-dialdehyde compounds, can be produced by chemically cleaving 1,2-diol groups.
A method of preparing a polyvinyl alcohol copolymer, comprising:
A method of preparing a polyvinyl alcohol copolymer, comprising:
A polyvinylalcohol copolymer, represented by Formula 4 or Formula 5:
A method for recycling a cyclohexene monomer, comprising:
A method of producing a useful organic material, comprising performing a diol oxidation reaction of a polyvinyl alcohol copolymer of Formula 5 to obtain a carboxylic acid of Formula 7, an aldehyde of Formula 8, or an alcohol of Formula 9:
Dependencies are inferred from the claim text.