Method for obtaining a polymer in a solution

Details Method for obtaining a polymer in a solution Method for obtaining a polymer in a solution

2004-07-14

2010-12-07

Choi, Ling-Siu (Department: 1796)

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

Synthetic resins

Process of treating scrap or waste product containing solid...

C521S040000, C521S045000, C521S046000, C528S480000, C528S500000, C528S50200C, C528S503000

Reexamination Certificate

active

07846986

ABSTRACT:
Process for recovering at least one polymer in solution in a solvent by precipitation by means of a non-solvent introduced gradually into the solution to form the precipitation medium, whereby:in the course of the introduction of the non-solvent into the precipitation medium, there is first a phase separation (into a continuous phase rich in solvent, in which the polymer is dissolved, and into a disperse phase, consisting of droplets rich in non-solvent) and then there is a phase inversion (the continuous phase then becoming the phase rich in non-solvent, and the disperse phase becoming the phase rich in solvent containing the dissolved polymer)the non-solvent is initially introduced into the precipitation medium in liquid form only and in a quantity (Q′) which is not zero but is less than the quantity (Q) required to bring about the phase inversion, and is subsequently introduced into the precipitation medium at least partly in vapour form.

REFERENCES:
patent: 3772262 (1973-11-01), Clementi
patent: 3933574 (1976-01-01), Zinoviev et al.
patent: 4038219 (1977-07-01), Boehm et al.
patent: 4071479 (1978-01-01), Broyde et al.
patent: 4146499 (1979-03-01), Rosano
patent: 4472291 (1984-09-01), Rosano
patent: 4668768 (1987-05-01), Mendiratta et al.
patent: 6172125 (2001-01-01), Vandenhende et al.
patent: 6235298 (2001-05-01), Naser et al.
patent: 6989404 (2006-01-01), Yamamoto et al.
patent: 7569658 (2009-08-01), Vandenhende et al.
patent: 2003/0119925 (2003-06-01), Vandenhende et al.
patent: 2005/0010027 (2005-01-01), Vandenhende et al.
patent: 2005/0077640 (2005-04-01), Fassiau et al.
patent: 2006/0194913 (2006-08-01), Pleska et al.
patent: 2008/0047671 (2008-02-01), Vandenhende
patent: 2009/0124715 (2009-05-01), Vandenhende
patent: 2009/0149619 (2009-06-01), Fassiau et al.
patent: 2009/0203868 (2009-08-01), Fassiau et al.
patent: 644230 (1995-03-01), None
patent: 0 945 481 (1999-09-01), None
patent: 1 291 382 (2003-03-01), None
patent: 2.078.683 (1971-11-01), None
patent: 2337164 (1977-07-01), None
patent: WO 0066087 (2000-11-01), None
patent: WO-01/23463 (2001-04-01), None
patent: WO-01/70865 (2001-09-01), None
patent: WO-2005/017010 (2005-02-01), None
Van Krevelen, D. W., Properties of Polymers, 1990 Edition, pp. 200-202.
Polymer Handbook, J. Brandrup and E. H. Immergut, Editors, 2nd Edition, pp. IV-337 to IV-359.
U.S. Appl. No. 12/063,710, filed Aug. 17, 2006, Fassiau et al.
U.S. Appl. No. 12/677,906, filed Sep. 18, 2008, Leppers et al.

Affiliated with

Also associated with

Rating

Method for obtaining a polymer in a solution does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for obtaining a polymer in a solution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for obtaining a polymer in a solution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4206092