| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2325-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S264-09
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2203-06 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C44-3461
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-22 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C44-34 |
| filingDate |
1999-03-19^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2003-10-08^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9e3bbaa3cc880bb8f945d43b5434b92a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c9e6d303cfcfc806efb17c8cb5bcada5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f335609a3b2729834d102c36682179c2 |
| publicationDate |
2003-10-08^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-1082384-B1 |
| titleOfInvention |
Water expanded polystyrene particles |
| abstract |
The invention relates to a process for the preparation of expanded polystyrene particles in which polystyrene beads containing water as the sole expanding agent are expanded. The process involves the following stages:A) the polystyrene beads are pre-expanded at temperatures above 100° C.,B) the pre-expanded particles are dried in dry air at temperatures between 20° and 95° C. over a period of from 1 to 10 hours,C) the dried expanded particles are further expanded with steam at temperatures ranging from 100° to 140° C., andD) the stages b and c are repeated as often as is necessary to achieve the desired bulk density. |
| priorityDate |
1998-03-24^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |