http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1282200-C
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ccec611885a43d3e5d7f50d185ff5b69 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L15-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L15-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L15-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F26-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-56 |
| filingDate | 1987-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1991-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8f8dce68f5fea802154e218b67fde231 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_133ba7a50f2cdcb5e8d5e5a4d85ab919 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5260ae48ebfeafefb4b96571263ef4e1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f03de0730e63cb3997453513bf7576d7 |
| publicationDate | 1991-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1282200-C |
| titleOfInvention | Batchwise preparation of crosslinked, finely divided polymers |
| abstract | Abstract of the Disclosure: Crosslinked, finely divided, water-absorbing polymers are prepared in a batchwise pro-cess by copolymerization of 100 parts by weight of a monomer mixture of acrylic acid or methacrylic acid, each of which is neutralized with from 0 to 100 mol% of an alkali metal or ammonium base, or acrylamide, methacryl-amide or N-vinylpyrrolidone with, as a crosslinking agent, from 0.01 to 5 parts by weight of a monomer con-taining two or more ethylenically unsaturated double bonds in 20-80% by weight aqueous solution in the pre-sence of an initiator in a multistage procedure in a batchwise mixing apparatus with constant thorough mixing in all stages, in the first stage the aqueous monomer solution being copolymerized at from 45 to 95°C and under from 0.1 to 0.8 bar with removal of some of the water by distillation, in the second stage the copolymerization being completed at from 100 to 170°C under a pressure of up to 8 bar, and in the third stage the water content of the resulting finely divided copolymer being decreased to 0.5-10% by weight under reduced pressure. |
| priorityDate | 1986-03-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 129.