Polymer devolatilization

Details Polymer devolatilization Polymer devolatilization

1996-07-23

1999-01-19

Teskin, Fred

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

Synthetic resins

Treating polymer containing material or treating a solid...

528481, 528483, 528498, 528502C, 528503, 159 471, 159DIG4, 159DIG16, C08F 610

Patent

active

058614745

ABSTRACT:
A process has been invented for removing contaminants (including solvent) from a flowing polymer, the process, in one aspect, including dissolving a sparingly soluble stripping agent into a flowing polymer, the sparingly soluble stripping agent stripping contaminants from the flowing polymer creating a mixture of contaminants and sparingly soluble stripping agent, which flows out from the flowing polymer, and separating the mixture from the polymer. In one aspect, recyclable sparingly soluble stripping agent is recovered and re-used.

REFERENCES:
patent: 3373148 (1968-03-01), Mackie et al.
patent: 3683511 (1972-08-01), Johnson et al.
patent: 3738409 (1973-06-01), Skidmore
patent: 3799235 (1974-03-01), Moosavian et al.
patent: 3917507 (1975-11-01), Skidmore
patent: 3920624 (1975-11-01), Humkey et al.
patent: 3931130 (1976-01-01), Beining
patent: 3963558 (1976-06-01), Skidmore
patent: 3987235 (1976-10-01), Fujimoto
patent: 4094942 (1978-06-01), Nakai et al.
patent: 4195169 (1980-03-01), Priddy
patent: 4258158 (1981-03-01), Pfeiffer
patent: 4372758 (1983-02-01), Bobst et al
patent: 4501885 (1985-02-01), Sherk et al.
patent: 4578455 (1986-03-01), Pipper et al.
patent: 4686279 (1987-08-01), Nagtzaam et al.
patent: 4703105 (1987-10-01), Allada
patent: 4842743 (1989-06-01), Yoshida et al.
patent: 4906329 (1990-03-01), Tominari et al.
patent: 4921678 (1990-05-01), Raufast
patent: 4952672 (1990-08-01), Moore et al.
patent: 5071950 (1991-12-01), Borho et al.
patent: 5080845 (1992-01-01), Herrmann et al.
patent: 5084134 (1992-01-01), Mattiussi et al.
patent: 5407974 (1995-04-01), Dallmeyer
patent: 5453158 (1995-09-01), Cummings et al.
"Polymer Devolatilization," Todd, 32 Annual Tech. Conf., SPE, 1974, pp. 472-475.
"Advances In Devolatilizing Extrusin Techniques," 31st Annual Tech. Conf., SPE, 1973, pp. 263-268.
"Slit Devolatilization of Polymers," Maffetone et al, AI Ch E Journal, May 91, vol. 37, No. 5, pp. 724-734.
"Polymer Melt Devolatilization: On Equipment Designs Equations," Biesenberger, Advances In Polymer Technology, vol. 7, No. 3, 1987, pp. 267-278.
"Sulzer SMX Mixers For The Plastics Production Industry," Gebruder Sulzer Aktiengesellschaft, Mar. 1993.
"Advances In Static Mixing Technology," CEP, Jul. 1986, p. 48.
"Devolatilization of Polymers," Ed. Biesenberger, Hansen Publishers, 1983, pp. 3-31, 35-50.
"Solubilities of Ethylene and Other Organic Solutes in Liquid, Low-Density Polyethylene in the Region 124.degree. to 300.degree. C," Maloney et al, AI Ch E Journal, vol. 22, No. 1, 1976, pp. 74-82.
"Solubility of Nitrogen and Ethylene In Molten Low-Density Polyethylene to 69 Atmospheres," Cheng et al, Journal of Polymer Science, vol. 16, 1978, pp. 319-333.
"Thermodynamics of Gas Solubilities in Molten Polymers," Liu et al, Journal of Applied Polymer Science, vol. 24, 1979 pp. 725-733.
Int'l Search Report, PCT/US97/12288, filed Sep. 7, 1997, counterpart of this case U.S. 08/685,314 and coowned therewith.
"Advances In Static Mixing Technology," Chemical Engineering Progress, Jul. 1986, pp. 42-48.

Affiliated with

Also associated with

Rating

Polymer devolatilization does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polymer devolatilization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymer devolatilization will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1247450