| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7ad7bc6db565b628935054ce3c977a1d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8a21c4e9d9c9a4f0eba3145743a03cae
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7b170d724bcf94bbd6150381521a655a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6b99b9c0cfbbaee90bf68a47f9911eae
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0c2a49fb37a5f1c712fb1072235261cf |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-1376
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2800-20 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-82
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0011
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F6-006 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F293-00 |
| filingDate |
2009-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_81b46ccd1468b3ba1d8f47ec9dad907d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_982bb4b17b5de3637f8505ea40f97ca5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c5ed49b7a368d25b22490e156643f734 |
| publicationDate |
2009-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2009137678-A1 |
| titleOfInvention |
Improved method for making sulfonated block copolymers, method for making membranes from such block copolymers and membrane structures |
| abstract |
The present invention relates to an improved method for making sulfonated block copolymers and to methods for making membranes from such block copolymers. In particular, the present invention relates to an improved method for making sulfonated block copolymers having at least two polymer end blocks that are resistant to sulfonation and at least one polymer interior block that is susceptible to sulfonation where the sulfonation agent is C 2 to C 8 acyl sulfate. In the improved process the residual carboxylic acid formed from the C 2 to C 8 acyl sulfate is converted to C 1 to C 4 alkyl esters by contacting the residual carboxylic acid with at least a 0.9: 1 molar ratio of a C 1 to C 4 alcohol to residual carboxylic acid, resulting in an improved sulfonated block copolymer solution. The present invention further relates to the use of such sulfonated block copolymer solutions to prepare various membranes and other articles. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9394411-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11021559-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10072122-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9365662-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103124767-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10012450-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2012054325-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2015054182-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10208168-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013062728-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8377515-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8377514-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10415900-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9828518-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9127132-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9738814-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2520620-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2520620-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8012539-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9988500-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2011268901-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2011230614-A1 |
| priorityDate |
2008-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |