http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1599281-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b9911abdd3631214895cc6dae252f9f4 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2103-408 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B24-2676 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B24-163 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B24-2688 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B24-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K23-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K23-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B24-2641 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B24-2647 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B28-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K23-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B28-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B24-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B24-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B24-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K23-00 |
| filingDate | 2004-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d1eeef0d5a3ed1821bb6abf4e10f7635 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_591e74431f92e855908563d87f07b7af http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7527518a60c41b36670967ba6078145d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_473a4f5ae63383262869facff4bea22d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a97d99737b2d44fed6fb87eecb0716fc |
| publicationDate | 2005-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1599281-A2 |
| titleOfInvention | Use of a polymer dispersant as a fluidising agent for hydraulic binder compositions and preparation method thereof |
| abstract | The invention relates to a polycarboxylate-type polymer dispersant comprising at least one copolymer which is obtained from a composition of monomers containing, in moles: A) 40 to 95 % of at least one unsaturated carboxylic monomer; B) 5 to 60 % of at least one acrylic or methacrylic ester monomer containing a polyether chain; and C) 0 to 20 % of at least a third monomer which is selected from acrylic ester or methacrylic ester or acrylamide or a derivative of acrylamide or aromatic vinyl monomer or the sulphonated derivative thereof. According to the invention, the copolymer has a controlled molecular mass distribution and can be obtained using a method comprising the following steps: i) polymerisation in aqueous solution at a temperature varying between 70 and 95 °C with a priming and transfer system comprising D) an oxidising agent and E) a reducing agent which is selected from metabisulphite salts, preferably sodium or potassium metabisulphite, the monomer/reducer molar ratio not exceeding 50; ii) semi-continuous addition of the oxidant and the monomer mixture over a time of between 1 and 4 hours; and (iii) introduction of the reducer which can be introduced as a starter before the addition of the oxidant and the monomers, semi-continuously and mixed with the monomers, or semi-continuously but supplied separately from the monomers and the oxidant. The invention also relates to a specific preparation method and to the uses thereof as a fluidising agent in mineral hydraulic binder compositions or as a dispersant agent in pigment pastes or aqueous polymer dispersions. |
| priorityDate | 2003-03-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 91.