Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...
Reexamination Certificate
2009-05-29
2010-12-28
Boykin, Terressa M (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Treating polymer containing material or treating a solid...
C523S334000, C523S335000, C524S495000
Reexamination Certificate
active
07858735
ABSTRACT:
In the production of elastomers the product obtained from the polymerization process is often in the form of a slurry. Described herein are an apparatus and a process for “finishing” the elastomer, i.e., dewatering and drying the elastomer. The process comprises the steps of obtaining a slurry comprising water and elastomer; passing the slurry through a first dewatering device to produce a wet elastomer crumb, wherein the first dewatering device comprises two dewatering extruders in parallel; passing the wet elastomer crumb through a second dewatering device; and then passing the wet elastomer crumb through a drying device to produce a dried elastomer crumb.
REFERENCES:
patent: 2371722 (1945-03-01), Wanderer
patent: 3240746 (1966-03-01), Davis
patent: 3591928 (1971-07-01), Nara
patent: 3834440 (1974-09-01), McCracken
patent: 4185057 (1980-01-01), Loetterle et al.
patent: 4304054 (1981-12-01), Nauck
patent: 4776269 (1988-10-01), Coggins et al.
patent: 5041249 (1991-08-01), Yeh
patent: 5042169 (1991-08-01), Vero
patent: 5070624 (1991-12-01), Vero et al.
patent: 5085815 (1992-02-01), Yeh et al.
patent: 5708132 (1998-01-01), Grimm
patent: 5729911 (1998-03-01), Kelleher et al.
patent: 6517335 (2003-02-01), Long et al.
patent: 1 579 106 (1970-01-01), None
patent: 2224269 (1974-10-01), None
patent: 1 590 532 (1982-06-01), None
Broussard, III Oscar K.
Swoboda Jean-Paul
Wang Yu Feng
Yeh Richard C.
Boykin Terressa M
ExxonMobil Chemical Patents Inc.
Krawczyk Nancy T.
Schmidt Jennifer A.
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