| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d648658dd620f548c24de39659a5e9e3 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29B9-065
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29B2009-165 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J8-1836
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J8-1818
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29B9-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-88
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-28 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-02 |
| filingDate |
2004-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2011-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f3a20b564d54cde38bdf33ff217bfcc6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_67cb5853af560d2e54b605f66271ec8f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d65fb50c5249bfd12d9ad76cebdee6eb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_df8177f82b9b8ee786b5856f10df0b3c |
| publicationDate |
2011-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-7863405-B2 |
| titleOfInvention |
Removal of residual acetaldehyde from polyester polymer particles |
| abstract |
In one embodiment, there is provided a process comprising introducing polyester polymer particles containing residual acetaldehyde into a vessel at a temperature within a range of 130° C. to 195° C. to form a bed of particles within the vessel, flowing a gas through at least a portion of the particle bed, and withdrawing finished particles from the vessel having a reduced amount of residual acetaldehyde. In this process, it is not necessary to introduce a hot flow of gas at high flow rates otherwise required to heat up cool particles to a temperature sufficient to strip acetaldehyde. Rather, this process provides a benefit in that, if desired, gas introduced into the vessel at low flow rates and low temperatures can nevertheless effectively strip acetaldehyde in a reasonable time because the hot particles quickly heat a the gas to the particle temperature. |
| priorityDate |
2004-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |