Deprotection with molten salt

Details Deprotection with molten salt Deprotection with molten salt

1996-05-16

1997-09-02

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

525272, 525314, 5253329, 5253331, 5253332, 5253333, 5253335, 525338, 525340, 525344, 525367, 528487, C08F 446, C08F 800

Patent

active

056632509

ABSTRACT:
Protected functional initiator initiated elastomer solutions are deprotected and optionally ionic impurities removed by contact with a molten component such as sodium bisulphate monohydrate. This allows deprotection and removal of metal contaminants such as the initiator or residue from hydrogenation catalysts without the introduction of significant amounts of additional water which cause emulsion formation. In accordance with this invention, better metal removal is achieved and the process of metal removal operates more smoothly because of the absence of emulsion formation. Separation of the molten component containing the extracted metal contaminants can easily be carried out by simple liquid-liquid phase separation on either a continuous or batch basis.

REFERENCES:
patent: Re27145 (1971-06-01), Jones
patent: 2999891 (1961-09-01), Gleason et al.
patent: 3600463 (1971-08-01), Hagemeyer, Jr. et al.
patent: 3700633 (1972-10-01), Wald et al.
patent: 3803113 (1974-04-01), Gluntz et al.
patent: 4156075 (1979-05-01), Holliday et al.
patent: 4191628 (1980-03-01), McDowell
patent: 4417029 (1983-11-01), Milkovich
patent: 4518753 (1985-05-01), Richards et al.
patent: 4528364 (1985-07-01), Prier
patent: 4677231 (1987-06-01), Aoshima et al.
patent: 4753991 (1988-06-01), Bronstert
patent: 4855509 (1989-08-01), Dave et al.
patent: 5104972 (1992-04-01), Madgavkar et al.
patent: 5177297 (1993-01-01), Gibler
patent: 5212285 (1993-05-01), Diaz et al.
patent: 5220100 (1993-06-01), Massie et al.
patent: 5288849 (1994-02-01), Garcin et al.
patent: 5331058 (1994-07-01), Shepherd et al.
patent: 5376745 (1994-12-01), Handlin, Jr. et al.
patent: 5416168 (1995-05-01), Willis et al.

Affiliated with

Also associated with

Rating

Deprotection with molten salt does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-309013