US 12,435,186 B2
Aqueous dispersions and methods for production
Cecil Coutinho, Wilmington, DE (US); Kate Lusvardi, Chadds Ford, PA (US); and Frank Driessen, Vliermaalroot (BE)
Assigned to Solenis Technologies, L.P., Wilmington, DE (US)
Filed by SOLENIS TECHNOLOGIES, L.P., Wilmington, DE (US)
Filed on Dec. 16, 2021, as Appl. No. 17/644,578.
Prior Publication US 2023/0192967 A1, Jun. 22, 2023
Int. Cl. C08J 3/05 (2006.01); C08J 3/18 (2006.01); C08K 5/00 (2006.01); C08K 5/05 (2006.01)
CPC C08J 3/05 (2013.01) [C08J 3/18 (2013.01); C08K 5/0016 (2013.01); C08K 5/05 (2013.01); C08J 2333/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for producing a high molecular weight ethylene (meth)acrylic acid (EAA) dispersion, the method comprising:
mixing an ethylene/(meth)acrylic acid (EAA) copolymer having a mass flow index (MFI) of no greater than 300 g/10 min at 190° C. and 2.16 kg, a plasticizer, and a base in dry solid form at a temperature of at least about 100° C. to form a molten phase in which the EAA copolymer is solvated by the plasticizer and in which the EAA copolymer is relaxed by the base, wherein the base, the plasticizer, and the EAA copolymer define a volume;
limiting an amount of water in the volume to at most 0.1% by weight when forming the molten phase; and
mixing water with the molten phase at least until the molten phase disperses into the water to form the high molecular weight EAA dispersion.