US 12,441,914 B2
Aqueous emulsion and adhesive using same
Yoriko Imaoka, Kurashiki (JP); Keisuke Morikawa, Houston, TX (US); and Tatsuya Tanida, Frankfurt am Main (DE)
Assigned to KURARAY CO., LTD., Kurashiki (JP)
Appl. No. 17/601,232
Filed by KURARAY CO., LTD., Kurashiki (JP)
PCT Filed Apr. 2, 2020, PCT No. PCT/JP2020/015138
§ 371(c)(1), (2) Date Oct. 4, 2021,
PCT Pub. No. WO2020/204120, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 2019-072599 (JP), filed on Apr. 5, 2019.
Prior Publication US 2022/0177733 A1, Jun. 9, 2022
Int. Cl. C09J 4/06 (2006.01); C09J 11/06 (2006.01); C09J 11/08 (2006.01); C09J 129/04 (2006.01)
CPC C09J 4/06 (2013.01) [C09J 11/06 (2013.01); C09J 11/08 (2013.01); C09J 129/04 (2013.01)] 19 Claims
 
1. An aqueous emulsion, comprising:
an ethylene-vinyl alcohol copolymer (A) as a dispersant; and
a polymer (B) comprising an ethylenically unsaturated monomer unit as a dispersoid,
wherein the ethylene-vinyl alcohol copolymer (A) has an ethylene unit content in a range of from 1 to less than 20 mol %, and
wherein the ethylene-vinyl alcohol copolymer (A) has a crystallinity in water at 30° C. (Cw (30° C.)) and a crystallinity in water at 70° C. (Cw (70° C.)) as determined by pulse NMR satisfying formula (I)

OG Complex Work Unit Math