Abstract: This invention relates to injection moldable type elastomeric compositions having improved physical and rheological properties. The compositions used for elastomeric articles include a styrene-ethylene/butylene-styrene block copolymer or compounds thereof, a neutralized sulfonated EPDM terpolymer and a non-polar process oil; and optionally a polypropylene thermoplastic resin.These blend compositions can be readily processed due to their superior rheological properties on conventional plastic fabrication equipment, especially on low pressure injection molding equipment into elastomeric articles having excellent physical properties and desirable rubbery characteristics.

Abstract: This invention relates to improved front and rear fascia of a motor vehicle having improved flexibility, wherein the improved elastomeric composition used in forming the fascia includes a neutralized sulfonated elastomeric polymer, a polyolefinic thermoplastic resin and a preferential plasticizer. The formed fascia has an elastomeric-rich inner core which is composed of a blend of the neutralized sulfonated elastomeric polymer being plasticized with a preferential plasticizer and a polyolefinic thermoplastic resin, and a thermoplastic-rich outer shell which is composed of a thermoplastic blend of a major portion of the polyolefinic thermoplastic resin and a minor portion of the neutralized sulfonated elastomeric polymer being plasticized with a preferential plasticizer.

Abstract: An injection-moldable, peroxide crosslinkable elastomeric composition comprises a mixture of a crystalline interpolymer comprising ethylene and propylene; a low density polyethylene; one or more multifunctional vinylic or allylic monomers; a medium to high structure form of carbon; and an organic peroxide.The composition is particularly useful for the fabrication of injection molded structures which are required to flex on impact and return to their original shape when the distorting force is released. Typical structures are automotive fender extensions, grilles and front and rear fascia.

Abstract: This invention relates to injection moldable and extrusion type elastomeric compositions having a viscosity at 200.degree. C. at 0.73 sec.sup.-1 of less than about 8.times.10.sup.5 poises. The compositions used for elastomeric articles include 100 parts of a neutralized sulfonated EPDM terpolymer; less than about 200 parts per hundred of a paraffinic, low polarity process oil; about 25 to about 200 parts per hundred of an amorphous silica filler treated or untreated; and a preferential plasticizer at about less than 50 parts per hundred based on 100 parts of the sulfonated elastomeric polymer. The composition may also include a crystalline polyolefinic thermoplastic at less than about 100 parts per hundred by weight per 100 parts of sulfonated polymer.