PROCESS AND SYSTEM FOR PRODUCTION OF POLYPROPIOLACTONE
First Claim
Patent Images
1. A method for producing polypropiolactone (PPL), comprising:
- providing feedstock streams of ethylene oxide (EO) and carbon monoxide, wherein the feedstock streams are optionally combined;
directing the feedstock streams to a first reaction zone;
contacting the feedstock streams with a carbonylation catalyst in the presence of a carbonylation solvent in the first reaction zone to convert at least a portion of the EO to a beta propiolactone (BPL) product stream, wherein the BPL product stream comprises BPL, carbonylation catalyst, and carbonylation solvent;
separating at least a portion of carbonylation catalyst from the BPL product stream to produce a carbonylation catalyst recycling stream and a processed BPL product stream, wherein the processed BPL product stream comprises BPL and carbonylation solvent;
directing the processed BPL product stream to a carbonylation solvent removal zone;
removing at least a portion of the carbonylation solvent from the processed BPL product stream to produce a polymerization feed stream, wherein the polymerization feed stream comprises BPL;
directing the polymerization feed stream to a second reaction zone; and
contacting BPL in the polymerization feed stream with a polymerization catalyst in the second reaction zone to produce PPL.
3 Assignments
0 Petitions
Accused Products
Abstract
Provided are integrated processes for the conversion of ethylene oxide to polypropiolactone. Systems for the production of polypropiolactone are also provided.
36 Citations
20 Claims
-
1. A method for producing polypropiolactone (PPL), comprising:
-
providing feedstock streams of ethylene oxide (EO) and carbon monoxide, wherein the feedstock streams are optionally combined; directing the feedstock streams to a first reaction zone; contacting the feedstock streams with a carbonylation catalyst in the presence of a carbonylation solvent in the first reaction zone to convert at least a portion of the EO to a beta propiolactone (BPL) product stream, wherein the BPL product stream comprises BPL, carbonylation catalyst, and carbonylation solvent; separating at least a portion of carbonylation catalyst from the BPL product stream to produce a carbonylation catalyst recycling stream and a processed BPL product stream, wherein the processed BPL product stream comprises BPL and carbonylation solvent; directing the processed BPL product stream to a carbonylation solvent removal zone; removing at least a portion of the carbonylation solvent from the processed BPL product stream to produce a polymerization feed stream, wherein the polymerization feed stream comprises BPL; directing the polymerization feed stream to a second reaction zone; and contacting BPL in the polymerization feed stream with a polymerization catalyst in the second reaction zone to produce PPL. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A system for converting ethylene oxide to polypropiolactone (PPL), comprising:
-
an ethylene oxide source; a carbon monoxide source; a carbonylation catalyst source; a carbonylation solvent source; a polymerization catalyst source; a first reaction zone configured to receive ethylene oxide from the ethylene oxide source, carbon monoxide from the carbon monoxide source, carbonylation catalyst from the carbonylation catalyst source, and carbonylation solvent from the carbonylation solvent source, and to output a beta propiolactone (BPL) product stream from contacting the ethylene oxide and the carbon monoxide with the carbonylation catalyst in the presence of the carbonylation solvent in the first reaction zone, wherein the BPL product stream comprises carbonylation solvent and BPL; a solvent removal unit configured to remove at least a portion of the carbonylation solvent from the BPL product stream; and a second reaction zone configured to receive the BPL product stream from the solvent removal unit, and polymerization catalyst from the polymerization catalyst source, and to output a PPL product stream from contacting the BPL product stream with the polymerization catalyst in the second reaction zone, wherein the PPL product stream comprises PPL. - View Dependent Claims (20)
-
Specification