| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bc26531bacdedd746f7e0b6c998962c5 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F110-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-022
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-06 |
| filingDate |
2021-07-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d928b88eac546a8f04bd472960229644
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_90d21fc148373a3c9c3d77354c3bf290
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9f674ba28853aa7bf22b24981af11bc8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac96dc18b964ac222a754fb7d035a30c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2e84da9165f8e52de2d59f6b17b9149a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d794ddae02a950c07263b93acfbaf075 |
| publicationDate |
2022-01-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2022025076-A1 |
| titleOfInvention |
Polymerization Catalyst System and Process to Produce Highly Reactive Polyisobutylene |
| abstract |
The present invention provides a method for producing highly reactive polyisobutylene by liquid phase polymerization of isobutylene or isobutylene containing feed stock, wherein at least 70 mole % of polymer chains in the polyisobutylene have exo olefin end groups. Further, the present invention provides a catalyst composition for polymerization, comprising of a Lewis acid complexed with at least two Lewis bases selected from sterically hindered ether and linear dialkyl ether; or a Lewis base complexed with at least two Lewis acids selected from aluminium halides mixture. The present invention additionally provides that Lewis acid with Lewis bases mixture or Lewis base with Lewis acids mixture constituting the catalyst show synergistic effect resulting in high isobutylene conversion and production of polyisobutylene having high exo olefin content, while maintaining desired molecular weight range of 250-10000 Dalton. |
| priorityDate |
2020-07-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |