http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-804782-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7d6f2a100a799d40b9e1a6c7135b728a |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2800-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2810-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J39-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J41-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-44 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-00 |
| filingDate | 1955-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1b4ab83a836f45e477e834b7c06f5a40 |
| publicationDate | 1958-11-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-804782-A |
| titleOfInvention | Improvements relating to the production of ion-exchange resins |
| abstract | Ion-exchange resins are produced by copolymerizing a compound containing one polymerizable double bond with a cross-linking agent comprising a ketone containing two polymerizable double bonds, each being part of a conjugated system with the carbonyl group, and introducing ion-exchange groups into the cross-linked polymer. The ketone may be divinyl, vinyl isopropenyl or diisopropenyl ketone. The ion-exchange groups may be introduced by an aftertreatment or by polymerizing compounds containing one polymerizable double bond and an ion-exchange group. In examples: (1) an anion-exchange resin is prepared by copolymerizing 91 per cent styrene and 9 per cent divinyl ketone by suspension polymerization, using azo-bis-isobutyronitrile as catalyst, ion-exchange groups then being introduced into the polymer by haloalkylation and amination: (2) a cation-exchange resin is prepared by sulphonating the copolymer prepared in Example (1); (3) a cation-exchange resin is prepared by copolymerizing divinyl ketone and glacial methacrylic acid in the presence of benzoyl peroxide catalyst; (4) an anion-exchange resin is prepared by copolymerizing b -diethylaminoethyl methacrylate and divinyl ketone in the presence of azo-bis-isobutyronitrile catalyst. Specifications 694,778, 774,386 and 748,234 are referred to. The Provisional Specification refers also to Specification 577,707, [Group IV]. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111303360-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111303360-B |
| priorityDate | 1955-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.