http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1255444-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a1507e3c6d035da9deb322b6840809ce |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F212-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F212-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-00 |
| filingDate | 1986-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1989-06-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_93455083881fba7a07e941844fd0231a |
| publicationDate | 1989-06-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1255444-A |
| titleOfInvention | Method for production of copolymer of vinyl cyanide compound an aromatic vinyl compound |
| abstract | ABSTRACT OF THE DISCLOSURE A method for producing by the suspension polymerization a copolymer of vinyl cyanide compound and aromatic vinyl compound having excellent transparency, hence uniform composition, and a content of the vinyl cyanide compound in a range of from 50 to 85% by weight, the method comprising steps of: (a) carrying out initial charging of the total quantity of the vinyl cyanide compound and a partial quantity of the aromatic vinyl compound at a compositional ratio, wherein the content of the vinyl cyanide compound in the resulting copolymer attains an intended ratio within a range of from 50 to 85% by weight; (b) initiating the copolymerization reaction by adding a polymerization initiator to the initially charged reaction system, after the reaction system is elevated to a temperature corresponding to a decomposition half-life T of the polymerization initiator to be represented by the following equation (I) and calculated as t=0: (I) where t denotes an elapsed time (in minutes) after initiation of the copolymerization reaction as counted from the instant, at which the polymerization initiator is added to the reaction system and continuous feeding of the aromatic vinyl compound is commenced, as the starting point; to represents an arbitrary time (in minute) which is longer by two minutes or more than the time for the continuous feeding of the aromatic vinyl compound; and T is the decomposition half-life (in minute) of the polymerization initiator to be used, and (c) carrying out the copolymerization reaction, while immediately and continuously feeding remainder of the aromatic vinyl compound to the reaction system after comm-encement of the copolymerization reaction, and elevating the tem-perature of the reaction system along a temperature (.theta.) corres-ponding to the decomposition half-life T of the polymerization initiator to be represented by the said equation (I). |
| priorityDate | 1985-06-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 42.