http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1118142-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_867508b0f6fae6187f22b47923d5c212 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F6-005 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F14-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F6-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F6-06 |
| filingDate | 1975-06-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1982-02-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_51309fe9fc6225b04e8afcc648111f11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ea7f71302f6a4d1e1f4820781b1da6e9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f3d41c8e44aac8a17b59de70205bbba9 |
| publicationDate | 1982-02-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1118142-A |
| titleOfInvention | Manufacture of polyvinyl chloride of low vinyl chloride monomer content by treatment of wet polyvinyl chloride |
| abstract | ABSTRACT The invention relates to a process whereby vinyl chloride monomer (VCM) is removed from the wet cake produced during or after centrifuging or otherwise dewatering in the suspension process for producing poly (vinyl chloride) (PVC). Steam is passed through the wet cake, thereby removing VCM from the resin. As a result the PVC has less VCM associated therewith, for example, ten parts per million (weight/weight), or even as low as not to be detected by gas chromatography with a sensitivity of analyzing 0.1 ppm VCM. "Wet cake" is meant to include PVC homopolymers and copolymers containing from 1 to 50% (wt./wt.) of water and having particle sizes in the range of about 1 to 500 microns in diameter. The preferred embodiment is in-process application of steam to the wet cake so that the VCM may be condensed, com-pressed, or otherwise captured. Also included is the treatment of the resin after a drying step to obtain PVC of low VCM content. Better VCM removal is obtained than with conventional methods where a slurry or latex of high VCM content is processed. |
| priorityDate | 1974-06-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.