High solids low volatile organic compounds content ethylene propylene diene terpolymer formulation

A low volatile organic compounds (VOC) content ethylene propylene diene terpolymer formulation with a solids content of at least 60 percent solids by volume of the total formulation and a volatile organic compounds content less than 450 grams per liter, comprising:

• a. an ethylene propylene diene terpolymer component comprising:
• (i) a first portion of ethylene propylene diene terpolymer (EPDM), wherein the ethylene propylene diene terpolymer (EPDM) is 50 weight percent to 99 weight percent of a total amount of the ethylene propylene diene terpolymer (EPDM) used in the high solids low volatile organic compounds durable curable waterproof liquid rubber formulation, and
• (ii) a first portion of solvent wherein the first portion of solvent is 33 weight percent to 67 weight percent of a total amount of solvent used in the high solids low volatile organic compounds durable curable waterproof liquid rubber formulation;
• (iii) a second portion of ethylene propylene diene terpolymer (EPDM), wherein the second portion of ethylene propylene diene terpolymer (EPDM) is 0.1 weight percent to 50 weight percent of the total amount of ethylene propylene diene terpolymer (EPDM) in the high solids low volatile organic compounds durable curable waterproof liquid rubber formulation;
• (iv) a second portion of solvent, wherein the second portion of solvent is 33 weight percent to 67 weight percent of the total amount of solvent in the high solids low volatile organic compounds durable curable waterproof liquid rubber formulation;
• (v) 0.01 weight percent to 10 weight percent of a co-agent, wherein the weight percent of the co-agent is based on a total weight of the high solids low volatile organic compounds durable curable waterproof liquid rubber formulation and, wherein the co-agent comprises at least one of:
• an acrylate, a triallyl cyanurate, a polybutadiene, and a phenylenedimaleimide;
• and
• (vi) 0.1 weight percent to 15 weight percent of a peroxide, wherein the weight percent of the peroxide is based on a total weight of the high solids low volatile organic compounds durable curable waterproof liquid rubber formulation, and wherein the peroxide comprises at least one of:
• a peroxyketal, a peroxyester, a dialkyl peroxide, a peroxy carbonate, and an azo initiator;
• b. a catalyst component comprising:
• (i) 0.1 weight percent to 10 weight percent of a metal drier based on the total weight of the high solids low volatile organic compounds durable curable waterproof liquid rubber formulation, and wherein the metal drier comprises at least one of:
• a metal carboxylate, and a metal alkoxide;
• and
• (ii) 1.0 weight percent to 5 weight percent of a solvent based on the total weight of the of the solvent in the high solids low volatile organic compounds durable curable waterproof liquid rubber formulation, and wherein the solvent comprises at least one of:
• an aliphatic solvent, an aromatic solvent, and a plant-based solvent;
• and
• the ethylene propylene diene terpolymer component and catalyst component forming a blend, with a weight ratio from 250:1 to 10:1 of the ethylene propylene diene terpolymer component to the catalyst component, and wherein the blend is adapted to cure on a substrate without addition of another curative, producing a low volatile organic compounds (VOC) content ethylene propylene diene terpolymer formulation with a solids content of at least 60 percent solids by volume of the total formulation and a volatile organic compounds content less than 450 grams per liter with a tensile strength greater than 250 psi, an elongation greater than 50 percent, and a Shore A hardness from 40 to 70.