| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cebc9740ef706cde29e885504f274ffa |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2323-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2333-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-36 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L33-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-262
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0027
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L23-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-261
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-76 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L23-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L33-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 |
| filingDate |
1990-07-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1991-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_74db94c0bbbd142e3b9947e73c2c17a4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8c4f9d1c21ef1e4f2c533a42aea20056
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a92c1b47157136b96a3657167048db6b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_91c333310e3f3414199416c24a3cddec
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a44b230bf299a345706d656b79d8519e |
| publicationDate |
1991-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-5057218-A |
| titleOfInvention |
Porous membrane and production process thereof |
| abstract |
Disclosed is a porous membrane comprising (1) a hydrophilic copolymer X composed principally of (poly)alkylene glycol mono(meth)acrylate units A and ethylene units B and (2) a polyolefin Y, the (poly)alkylene glycol mono(meth)acrylate units A being of the formula ##STR1## where R 1 and R 2 independently represent hydrogen or methyl, and n has a value in the range of 1 to 9. This porous membrane has permanent hydrophilicy suitable for the treatment of water-based liquids and can be produced by an industrially advantageous process. This process comprises melt-forming a blend of (1) a hydrophilic copolymer X composed principally of (poly)alkylene glycol mono(meth)acrylate units A and ethylene units B and (2) a polyolefin Y; heat-treating the melt-formed product in a vacuum or an inert gas medium at a temperature not higher than the melting point of polyolefin Y for a period of an hour or more; and stretching the heat-treated, melt-formed product to make it porous. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009127186-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2017165893-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6083393-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8602221-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005058823-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8075818-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5677360-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6039872-A |
| priorityDate |
1989-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |