Green strength promoters for EPDM/EPM compositions

Details Green strength promoters for EPDM/EPM compositions Green strength promoters for EPDM/EPM compositions

1994-03-10

1995-04-18

Hoke, Veronica P.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

428147, 428148, 524437, C08K 338

Patent

active

054079896

ABSTRACT:
EPM and/or EPDM compositions exhibiting superior green strength as compared to conventional EPM/EPDM compositions are attained by adding, along with the rubber curing agents and various conventional additives as desired, colemanite and/or alumina trihydrate. Colemanite, alumina trihydrate or a mixture of the two have unexpectedly been found to enhance the green strength of EPM/EPDM compositions prior to vulcanization. The green strength promoters of this invention utilized in EPM/EPDM rubber compositions allows for faster mixing (shorter mixing cycles) and improved processing rates, such as faster calender throughput rates, to be achieved.

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Kunstoffe (German Plastics) 67 (1977) pp. 34-38--English Translation.
Great Lakes Mineral Co. Al.sub.2 O.sub.3.3H.sub.2 O brochure (1977).
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