abstract |
The Mooney viscosity and green strength of ethylene-vinyl acetate (EVA) copolymer gum stock is improved by the addition thereto of a suitable elastomer such as: high viscosity ethylene propylene rubber (EPR); nitrile rubber; polychloroprene; polyacrylate rubber; polyurethane; chlorinated polyethylene; polyester; ethylene-propylene diene monomer (EPDM) terpolymer; and other elastomers such as ethylene-methyl acrylate, ethylene butyl acrylate and acrylonitrile types. |