Elastomeric compositions

Details Elastomeric compositions Elastomeric compositions

1977-11-29

1979-10-02

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 336AQ, 260 336PQ, 260 4233, 260 4247, 260DIG31, C08L 9100

Patent

active

041698207

ABSTRACT:
This invention relates to extrusion and injection moldable type elastomeric compositions having a viscosity at 200.degree. C. at 0.73 sec.sup.-1 of about 8.times.10.sup.4 to about 8.times.10.sup.5 poises. The compositions used for elastomeric articles include 100 parts of a neutralized sulfonated EPDM terpolymer; about 25 to about 150 parts per hundred of a non-polar process oil; about 50 to about 300 parts per hundred of a filler; and a preferential plasticizer at about 0 to about 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.
These blend compositions can be readily processed due to their superior rheological properties on conventional plastic fabrication equipment into elastomeric articles having excellent physical properties and desirable rubbery characteristics.

REFERENCES:
patent: 3642728 (1972-02-01), Canter
patent: 3847854 (1974-11-01), Canter et al.
patent: 3974241 (1976-08-01), Lundberg et al.
patent: 4014831 (1977-03-01), Bock et al.

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