Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...
Patent
1982-08-27
1984-01-03
Levin, Stanford M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Treating polymer containing material or treating a solid...
526345, C08F 600, C08F 628
Patent
active
044243405
ABSTRACT:
Vinyl chloride and any other comonomers present in a vinyl chloride polymer are removed by heating the polymer to a temperature between its glass transition temperature and 180.degree. C. by directly condensing steam on to the polymer, maintaining the polymer at this temperature sufficiently long to remove the greater part of the monomer or monomers present in the polymer and then cooling the polymer to below its glass transition temperature by evaporating the steam that has condensed on the polymer.
REFERENCES:
patent: 2068424 (1937-01-01), Mark et al.
patent: 2458636 (1949-01-01), Plambeck
patent: 3052663 (1962-09-01), Bodlaender et al.
patent: 3622553 (1971-11-01), Cines
patent: 3625932 (1971-12-01), Green
patent: 3956249 (1976-05-01), Goodman et al.
Tzschoppe, C. A. 85:193352c, (1976), Ger. Offen. 2,509,937, 9-16-76.
Solvay et Cie, C. A. 80:109076g, (1974), Belg., 793,505, 6-29-73.
Ito et al., C. A. 85:22094r, (1976), Japan, Kokai, 76 26, 988, 3-5-76.
Chem. Eng., (6-5-67), pp. 145-152.
Encyc. Pol. Sci. and Tech., 14, (1971), pp. 339-342.
German Printed Application, Eilers et al., F 11325, ivb/39c, 12-15-55.
Noel et al., C. A. 84:165403f, (1976), Gere. Offen. 2,531,111, 2-26-76.
Arvga et al., C. A. 85:193522H, (1976), Ger. Offen. 2,607,675, 9-2-76.
Coppens Guillaume
Davoine Jean-Claude
Golstein Jean
Levin Stanford M.
Solvay & Cie
LandOfFree
Process for removing residual vinyl chlorine from the polymer 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 removing residual vinyl chlorine from the polymer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for removing residual vinyl chlorine from the polymer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1032541