Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...
Patent
1996-06-13
1997-12-16
Weber, Thomas R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Treating polymer containing material or treating a solid...
528502C, C08F 622
Patent
active
056986661
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: 4910850 (1990-03-01), Sugimori et al.
Burroway Gary Lee
Lewis Lance Walter
Mate Robert Donald
Ullemeyer John Charles
Hendricks Bruce J.
The Goodyear Tire & Rubber Company
Weber Thomas R.
LandOfFree
Process for finishing a resin from an emulsion polymerized latex does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for finishing a resin from an emulsion polymerized latex, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for finishing a resin from an emulsion polymerized latex will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-207336