http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H02151603-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2800-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2810-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-56 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H17-37 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08C19-00 |
| filingDate | 1989-10-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2b6a4cccda53a5982d2d96894ba4c506 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4059904dc02ac195df514bf83db25f00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_610c7a67fd6817751544bfcca02bf61f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3ce6d5860b3268da283fa914ba2165c4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8a73fa4c063c2ae5ee2e566d36d70bee http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2571d880fd1efbe8746de96d7cb2ac28 |
| publicationDate | 1990-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H02151603-A |
| titleOfInvention | Cross-linked water-soluble copolymer, its production, and wet strength paper manufacturing additive containing it |
| abstract | PURPOSE: To improve the wet strengthening effect and storage stability by hydrolyzing acetal group in a copolymer of (meth)acrylamide and acetal group- contained monoethylenic unsaturated monomer followed by condensation. n CONSTITUTION: A copolymer (A) having a K-value of 10-70 is provided by polymerizing (a) a (meth)acrylamide; 50-99 mole % with (b) an acetal group-contained monoethylenic unsaturated monomer of formula I or II (R is H, CH 3 or C 2 H 5 ; X is O or NH; R 1 is a 1-6 C alkylene or arylene; R 2 is a 1-4 C alkyl or 2-4 C alkylene); 50-1 mole %, and (c) another monomer (e.g.; diallyldimethyl ammonium); 0-20 mole % in the presence of a polymerization initiator at 70-100°C so that the acetal group is not hydrolyzed. An acid is then added to the component A to regulate pH to 5 or less, and the mixture is heated to 20-100°C to hydrolyze the acetal group, whereby an aldehyde-contained copolymer (B) is obtained. The component B is regulated to pH 5-11 and condensed at 20-80°C to the highest limit where it is water-soluble, an acid is added until the pH is 3 or less, and the condensation is stopped. n COPYRIGHT: (C)1990,JPO |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2008280653-A |
| priorityDate | 1988-10-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.