US 12,454,610 B2
Vinyl acetate-ethylene copolymer emulsion and method for the production thereof
Yong-Hae Choi, Seongnam-si (KR); DaeKyu Kang, Seongnam-si (KR); and Jong-Bok Kim, Seongnam-si (KR)
Assigned to Wacker Chemie AG, Munich (DE)
Appl. No. 17/613,798
Filed by Wacker Chemie AG, Munich (DE)
PCT Filed May 23, 2019, PCT No. PCT/EP2019/063331
§ 371(c)(1), (2) Date Nov. 23, 2021,
PCT Pub. No. WO2020/233815, PCT Pub. Date Nov. 26, 2020.
Prior Publication US 2022/0227986 A1, Jul. 21, 2022
Int. Cl. C08L 31/04 (2006.01)
CPC C08L 31/04 (2013.01) 18 Claims
OG exemplary drawing
 
1. A copolymer emulsion, comprising:
a vinyl acetate-ethylene copolymer emulsion prepared by using a redox initiator;
wherein the redox initiator comprises a salt of at least one metal selected from the group consisting of silver (Ag), platinum (Pt), copper (Cu), mercury (Hg), zinc (Zn), tin (Sn), lead (Pb), bismuth (Bi), cadmium (Cd), and chromium (Cr);
wherein the vinyl acetate-ethylene copolymer emulsion further comprises an oligomer of a monocarboxylic acid selected from the group consisting of C1-C14 aliphatic monocarboxylic acid and C6-C14 aromatic monocarboxylic acid; and
wherein the oligomer of the monocarboxylic acid is present in an amount of 0.15 to 0.4 parts by weight based on 100 parts by weight of the vinyl acetate-ethylene copolymers.