High yield recycle process for lactide

Details High yield recycle process for lactide High yield recycle process for lactide

1991-10-22

1992-08-04

Raymond, Richard L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

562580, 562589, C07D31912, C07C 5148, C07C 5908

Patent

active

051360578

ABSTRACT:
Processes are described for recovering lactic acid from impure lactide and the residue produced in the depolymerization of polylactic acid to lactide. Lactic acid is recovered from the impure lactide by a dual solvent extraction process and, from the polylactic acid residue by hydrolysis. The lactic acid recovered from the impure lactide and the depolymerization residue is recycled to provide for a high yield lactide process.

REFERENCES:
patent: 1095205 (1914-05-01), Gruter et al.
patent: 2668162 (1954-02-01), Lowe
patent: 2703316 (1955-03-01), Schneider
patent: 3878284 (1975-04-01), Schmitt et al.
patent: 4033938 (1977-07-01), Augurt et al.
patent: 4727163 (1988-02-01), Bellis
patent: 4797468 (1989-01-01), De Vries
patent: 4800219 (1989-01-01), Murdoch et al.
patent: 4835293 (1989-05-01), Bhatia
patent: 4895681 (1990-01-01), Herrmann et al.
patent: 4966982 (1990-10-01), Ono et al.
patent: 4983745 (1991-01-01), Muller et al.
patent: 4990222 (1991-02-01), Aigner et al.

Affiliated with

Also associated with

Rating

High yield recycle process for lactide does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High yield recycle process for lactide, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High yield recycle process for lactide will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-779557