http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S5767603-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cebc9740ef706cde29e885504f274ffa |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-44 |
| filingDate | 1980-10-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e5db8a231b5c0707d49caae6fe4e47b2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_62600ee9ef8e28987c5760988f10709c |
| publicationDate | 1982-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S5767603-A |
| titleOfInvention | Preparation of dried water swelling polymer |
| abstract | PURPOSE: To distill away remaining water from a water swelling polymer at low cost without damaging the shape of a water swelled polymer, by treating a water swelled body of water swelling polymer of poly(meth)acrylic acid monovalent salt type with an amphoteric polyvalent metal salt to carry out chemical dehydration, followed by a specific treatment. n CONSTITUTION: A water swelled body of a water swelling polymer containing wholly or partially a poly(meth)acrylic acid monovalent salt is adjusted to a pH of 7W9 by an acid, and ≥ stoichiometric amount of an amphoteric polyvalent metal salt (e.g., hydrochloride of Zn, etc.) is added to the water swelled body and a monovalent ion of carboxyl group in the polymer is replaced by a polyvalent metal ion to carry out chemical dehydration. An alkali metal hydroxide (e.g., sodium hydroxide, etc.) or ammonium hydroxide in an amount ≥ twice as much as a corresponding amount of the carboxyl group in the replaced polymer is added dropwise to the replaced polymer in a solution containing ≥50wt% water-soluble organic solvent (e.g., acetone, etc.), and the organic solvent together with the remaining water is distilled away by heating, etc. n COPYRIGHT: (C)1982,JPO&Japio |
| priorityDate | 1980-10-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.