Carbon black containing EPDM compositions and process for producing same
US5700845A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1994 |
| Grant date | Dec 23, 1997 |
| Priority date | — |
| Expiry date | Oct 3, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2323/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.