| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_21dcc349bcd3f447c9422edb1059d355 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C11-0007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C11-0042
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08H6-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C3-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08H7-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08H3-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C11-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07G1-00 |
| filingDate |
1986-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1990-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c9c825fdd8ef5fde1362c6c4c35726d8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4264d8b47b6179d458a8f843d1ddf859
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8af7f659bf306cddb9bf99df05930bca
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c67639f88cc5deb8e69beaeb1b201488 |
| publicationDate |
1990-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-1267648-A |
| titleOfInvention |
Process for lignin recovery |
| abstract |
ABSTRACT OF THE DISCLOSURE Lignin is precipitated in high yields and at high rates from a black liquor produced by pulping wood at high temperatures and pressures with an aqueous lower aliphatic alcohol solvent. The lignin is precipitated by diluting the black liquor with water and an acid to form a solution with a pH of less than about 3, an alcohol content of less than about 30% by volume and a tempera-ture of less than about 60°C. The precipitated lignin, when subsequently dried, is in the form of a powder which requires little or no crushing to convert it into a fine uniform size suitable for use without further significant processing. |
| priorityDate |
1985-11-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |