US 12,084,526 B2
Vinyl alcohol polymer and method for producing vinyl alcohol polymer
Yohei Nishimura, Ibaraki (JP); Junichi Niino, Nagaokakyo (JP); Yasunari Kusaka, Osaka (JP); Nami Nakajima, Osaka (JP); and Hidehiro Yamaguchi, Nobeoka (JP)
Assigned to SEKISUI CHEMICAL CO., LTD., Osaka (JP); and Sekisui Specialty Chemicals America, LLC, Pasadena, TX (US)
Appl. No. 17/417,589
Filed by SEKISUI CHEMICAL CO., LTD., Osaka (JP); and Sekisui Specialty Chemicals America, LLC, Dallas, TX (US)
PCT Filed Dec. 26, 2019, PCT No. PCT/JP2019/051248
§ 371(c)(1), (2) Date Jun. 23, 2021,
PCT Pub. No. WO2020/138341, PCT Pub. Date Jul. 2, 2020.
Claims priority of provisional application 62/785,385, filed on Dec. 27, 2018.
Prior Publication US 2022/0056169 A1, Feb. 24, 2022
Int. Cl. C08F 16/06 (2006.01); C08F 2/18 (2006.01); C08F 2/20 (2006.01); C08F 8/06 (2006.01); C08F 14/06 (2006.01)
CPC C08F 16/06 (2013.01) [C08F 2/18 (2013.01); C08F 2/20 (2013.01); C08F 8/06 (2013.01); C08F 14/06 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A vinyl alcohol-based polymer, having a value defined by the following integral value (e) of 0.8 to 20 in the case when a sum of the following integral value (a) to (e) is 100 in a 1H-NMR spectrum
(a) integral value of peak confirmed at 5.70 to 5.96 ppm
(b) integral value of peak confirmed at 5.97 to 6.63 ppm
(c) integral value of peak confirmed at 6.64 to 7.55 ppm
(d) integral value of peak confirmed at 7.56 to 7.81 ppm
(e) integral value of peak confirmed at 7.82 to 8.04 ppm.