Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1997-07-07
1999-10-05
Teskin, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
5263292, 526347, 528499, 528502R, 528502D, C08F23610, C08F 622
Patent
active
059626143
ABSTRACT:
A process for finishing latex to form a dry resin and the resulting product. The process includes coagulating a latex of a thermoplastic polymer at a temperature at or just above the agglomeration temperature of the resin, dewatering the resin slurry to form a resin cake, drying the resin cake using extrusion technology to form a resin melt and solidifying the resin melt to form the resin. Preferred processes of the invention also include finishing the resin, such as by pelletizing and/or grinding it. More preferred processes of the invention include collecting and neutralizing the aqueous liquid byproducts from the dewatering and drying steps of the process. One embodiment of the invention includes utilizing water to solidify the resin melt, pelletizing the resin and drying the pellets. Most preferred processes of the invention include recycling any aqueous liquid byproducts of the solidifying and/or pellet drying steps, and recycling dried resin that is outside of the specification back into the resin cake drying step. Dried resins of the invention can have a moisture of not greater than 1.0% by weight and a residuals concentration of not greater than 500 ppm.
REFERENCES:
patent: 3891609 (1975-06-01), Wolfe et al.
patent: 4005249 (1977-01-01), Peterson et al.
patent: 4508592 (1985-04-01), Kowalski
patent: 4910850 (1990-03-01), Sugimori et al.
patent: 4972035 (1990-11-01), Suga et al.
patent: 5247034 (1993-09-01), Mate et al.
Burroway Gary Lee
Lewis Lance Walter
Mate Robert Donald
Ullemeyer John Charles
Hendricks Bruce J.
Teskin Fred
The Goodyear Tire & Rubber Company
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