EPDM compositions and process for producing same

Details EPDM compositions and process for producing same EPDM compositions and process for producing same

1997-08-15

1998-09-01

Cooney, Jr., John M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

4272071, 4274071, 427413, 524496, 521121, 521125, 521128, 521130, 521131, 521133, 521150, C08G 1814, C08K 304

Patent

active

058012095

ABSTRACT:
Disclosed are foamable EPDM compositions comprising EPDM, a carbon black having a CTAB of about 50 to 60 m2/g and DBP of 90 to 115 cc/100 g and a blowing agent which are advantageous for use in applications where UHF microwave curing is utilized and for replacing foamable EPDM compositions incorporating similar amounts of conventional blends of carbon blacks. Also disclosed are foamed, cured EPDM compositions comprising: EPDM and a carbon black having a CTAB of about 50 to 60 m2/g and DBP of 90 to 115 cc/100 g which have advantageously lower sponge density and lower sponge compression set than EPDM compositions incorporating similar amounts of conventional low reinforcing carbon blacks. Further disclosed is a process for producing the foamed, cured EPDM compositions of the present invention. Additionally disclosed is use of the foamed, cured EPDM compositions of the present invention as weatherstripping.

REFERENCES:
patent: 5262471 (1993-11-01), Akao
patent: 5700845 (1997-12-01), Chung et al.
International Search Report from European Patent Office mailed Jan. 22, 1996, in PCT/US95/11640 (based on U.S. Appln. Serial No. 08/317,208).

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