Method for discontinuous purification of crude acrylic acid...

Details Method for discontinuous purification of crude acrylic acid... Method for discontinuous purification of crude acrylic acid...

2007-12-11

2007-12-11

Puttlitz, Karl (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

Reexamination Certificate

active

10275859

ABSTRACT:
Crude acrylic acid is purified batchwise by crystallization by a process which comprises at least one purification stage and at least one stripping stage and in which at least the first stripping stage is carried out in a different crystallizer from the first purification stage.

REFERENCES:
patent: 4882430 (1989-11-01), Neubauer et al.
patent: 5817865 (1998-10-01), Machhammer et al.
patent: 5831124 (1998-11-01), Machhammer et al.
patent: 6541665 (2003-04-01), Bastiaensen et al.
patent: 2003/0018214 (2003-01-01), Decker et al.
patent: 43 08 087 (1994-09-01), None
patent: 195 08 558 (1996-09-01), None
patent: 196 00 955 (1997-07-01), None
patent: 198 29 477 (2000-01-01), None
patent: 0 373 728 (1990-06-01), None
patent: 0 257 565 (1991-01-01), None
patent: 0 293 224 (1992-09-01), None
patent: 0 616 998 (1996-05-01), None
U.S. Appl. No. 09/719,572, filed Jan. 2, 2001, Allowed.
U.S. Appl. No. 10/275,859, filed Nov. 12, 2002, Pending.

Affiliated with

Also associated with

Rating

Method for discontinuous purification of crude acrylic acid... 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 discontinuous purification of crude acrylic acid..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for discontinuous purification of crude acrylic acid... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3826608