Patent ID: 11926729
Assignee: DOW GLOBAL TECHNOLOGIES LLC
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A foam comprising an ionomer, wherein the ionomer comprises a neutralized blend of an ethylene acid copolymer and an aliphatic, mono-functional organic acid, wherein the blend consists of:
from 40 to 95 wt % of the ethylene acid copolymer, based on the total weight of the blend, the ethylene acid copolymer being the polymerized reaction product of:
ethylene, and
from 1 to 25 wt % of monocarboxylic acid, based on the total weight of monomer present in the ethylene acid copolymer; and
from 1 to 40 wt % of softening comonomer, based on the total weight of monomer present in the ethylene acid copolymer;

from 5 to 50 wt % of the aliphatic, mono-functional organic acid, based on the total weight of the blend, wherein the aliphatic, mono-functional organic acid has fewer than 36 carbon atoms; and
from 0 wt. % to 40 wt. % of additives selected from the group consisting of plasticizers, stabilizers, hydrolytic stabilizers, primary and secondary antioxidants, ultraviolet light absorbers, anti-static agents, dyes, pigments coloring agents, inorganic fillers, fire-retardants, lubricants, reinforcing agents, synthetic fiber or pulp, foaming or blowing agents, processing aids, slip additives, antiblock agents, release agents, tackifying resins, and inorganic fillers;
wherein at least 70 mole % of total acid units are neutralized with a cation source comprising (a) a trivalent cation and (b) either a mono- or di-valent cation; and
wherein at least 70 mol. % of the total acid units are neutralized with the trivalent cations.