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US 11,993,671 B2Granted
Chloroprene/unsaturated nitrile copolymer, chloroprene/unsaturated nitrile copolymer composition and vulcanized molded article
AssigneeDenka Company Limited
InventorsWataru Nishino, Suguru Onuki, Atsunori Kondo, Yuhei Ishigaki, Naoki Kobayashi
Life of this patent
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Abstract
A chloroprene-unsaturated nitrile copolymer having 3 to 20% by mass of a structural unit derived from an unsaturated nitrile monomer, in which the chloroprene-unsaturated nitrile copolymer has a peak at 5.80 to 6.00 ppm in a 1H-NMR spectrum as measured in a deuterochloroform solvent, and a ratio (A/B) of a peak area (A) at 5.80 to 6.00 ppm and a peak area (B) at 4.05 to 6.20 ppm is 0.6/100 to 1.1/100.
Claims17
A chloroprene-unsaturated nitrile copolymer comprising 3 to 20% by mass of a structural unit derived from an unsaturated nitrile monomer, wherein
- the chloroprene-unsaturated nitrile copolymer comprises a peak at 5.80 to 6.00 ppm in a 1H-NMR spectrum as measured in a deuterochloroform solvent, and
- a ratio (A/B) of a peak area (A) at 5.80 to 6.00 ppm and a peak area (B) at 4.05 to 6.20 ppm is 0.6/100 to 1.1/100;
- wherein
- the peak at 5.80 to 6.00 ppm represents a peak derived from vinyl hydrogen atoms of the 1,2-isomer of the chloroprene linking unit in the copolymer, and the peak at 4.05 to 6.20 ppm represents a peak derived from vinyl hydrogen atoms of the chloroprene structural unit in the copolymer.
1 more element
Dependencies are inferred from the claim text.