| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F285-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F291-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F36-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F20-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F20-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F12-08 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F36-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F12-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F285-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F291-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L57-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-00 |
| filingDate |
1997-09-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3f51c97bc3d22f883abe56bfbe15159b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9a433f9d2b9b4f8d870dc523e2efd781
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_055a6c2896606d5f2a78cf757f24e45b |
| publicationDate |
1999-03-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DE-19738081-A1 |
| titleOfInvention |
Process for the production of particulate polymers using a stable N-oxyl radical |
| abstract |
The invention relates to a method for producing particulate polymers P by radically initiated aqueous emulsion polymerization, wherein at least one ethylenically unsaturated monomer is emulsified by means of a dispersing agent in an aqueous medium and polymerized by means of a radical polymerization initiator in the presence of a stable N-oxyl radical so that an aqueous polymer dispersion is obtained. According to the inventive method: a) a peroxide, a hydroperoxide and/or an azoic compound are used as a radical polymerization initiator, whose molar solubility at 25 DEG C and 1 bar in water is greater than or the same as the corresponding molar solubility of tert-butyl hydroperoxide in water and whose decomposition temperature in a polymerization medium is < 100 DEG C; b) the radically initiated aqueous emulsion polymerization is carried out at a temperature above 100 DEG C; c) the radically initiated aqueous emulsion polymerization is conducted at pressures higher than the vapor pressure of the polymerization mixture contained in the polymerization tank, and d) the aqueous polymer dispersion is used to obtain the particulate polymer P by totally or partially separating the aqueous medium by distillation or by further processing the aqueous polymer dispersion as obtained. |
| priorityDate |
1997-09-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |