| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0e3d6a3426ea020cab047ec6927ff60b |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09J115-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08C19-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D115-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09J11-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D7-63 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D7-63
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08C19-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-22 |
| filingDate |
2012-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2021-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2c07c462ee17c3066383ba730b745732
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9ae06ddf8d2aa3608407101888fdb527
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f554f5741bc3e2ac51bce98789ef8ffb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0592ffaf0549b190a27cddc045a23f31
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_567f28a7abba4ddff2940839b0295d2e |
| publicationDate |
2021-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2841998-C |
| titleOfInvention |
Process for producing brominated butyl rubber |
| abstract |
There is provided a process for the preparation of cements comprising aliphatic mediurn and at least one brominated butyl rubber. First, a butyl rubber is provided where the butyl rubber comprises 5 to 30 wt-% of at least one butyl rubber; 0 to 5 wt-% of water and an aliphatic medium. Then, the butyl rubber or the butyl rubbers contained in the butyl rubber cement are brominated by a continuous process with elemental bromine in the presence of an added aqueous oxidizing agent in order to obtain a heterophasic mixture having a cement and an aqueous phase. The oxidizing agent is an aqueous solution of hydrogen peroxide comprising 20 to 60 wt-% of hydrogen peroxide. Finally, the pH of the aqueous phase is adjusted using a base to 6 to 13, then the cement is separated from the aqueous phase or the heterophasic mixture is separated to obtain the cement and an aqueous phase and the cement is washed with an aqueous mixture. |
| priorityDate |
2011-07-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |