Polyamide thermoplastic elastomer obtained by blending
AssigneeCopolymer Rubber & Chemical Corporation
InventorErrol J. Olivier
Life of this patent
Estimating the term…
Abstract
Novel thermoplastic elastomer compositions, made by dispersing a polyolefin elastomer phase containing functionalized EPM or EPDM in a polyamide resin followed by cross-linking of the elastomer phase, are described. The cross-linked phase exists as discreet particles, providing an overall blend which remains thermoplastic. The resulting blend may be used in the fabrication of elastomeric goods without the need for a separate vulcanization step after the desired object is formed.
Claims13
A polyamide thermoplastic elastomer blend having improved tensile strength and elongation properties comprising (a) 40-90 percent by weight of a EPM or EPDM rubber which has been modified by having grafted thereto an epoxy component having the formula:
- ##STR3## in which R' is an organic compound having an epoxide functionality and R is selected from the group consisting of hydrogen, an alkyl, aralkyl, cyclic or aromatic group, and (b) 60-10 percent by weight of a polyamide resin in which said rubber is dispersed, said rubber having been cross-linked after dispersion in said polyamide resin by a cross-linking agent selected from the group consisting of peroxides, metal stearates, metal oxides, phenolic resin and sulfur.
A method of producing polyamide elastomer blends having improved tensile strength and elongation properties comprising the steps of dispersing from 40-90 percent by weight of an EPM or EPDM rubber which has been chemically modified by having grafted thereto an epoxy component having the formula:
- ##STR4## in which R' is an organic compound having an epoxide functionality and R is selected from the group consisting of hydrogen, an alkyl, aralkyl, cyclic or aromatic group, into 60-10 percent by weight of a polyamide resin and cross-linking said rubber after dispersion by means of a cross-linking agent selected from the group consisting of peroxides, metal stearates, metal oxides, phenolic resin and sulfur.
Dependencies are inferred from the claim text.