| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_af99df08b153738cd418446a75d09bfc |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F12-08 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F12-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00 |
| filingDate |
1977-07-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1979-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1eb71f6772c9acb0b0939c8d9ad4bbc7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3fbc5269a974b7bc7d66c67d3895ae74
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_638755fe0227b1363e7e6e1af9b59778 |
| publicationDate |
1979-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4161573-A |
| titleOfInvention |
Process for making polystyrene |
| abstract |
Disclosed is a method for making polystyrene with M w between about 1,000 and about 50,000 and M w /M n ratio of less than about 8 by cationically polymerizing styrene monomer under substantially isothermal conditions where the conversion of styrene monomer is carried out in 2 or more stages by contacting with a cation generator. The polystyrene product finds utility as plasticizer for high molecular weight polystyrenes, as a binder resin in various coating applications, and as a precursor for further functionalized polystyrene derivatives. For example, a polystyrene of about 13,000 M w and M w /M n of about 4.9 is prepared by contacting styrene monomer with BF 3 in 4 stages between a temperature of about 60° C. and about 80° C. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6433221-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6340420-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6433220-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6218573-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4594391-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6417128-B1 |
| priorityDate |
1976-08-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |