http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102584582-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c8b1638d0d7a67c2cfa1f884bdd094ae |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-48 |
| filingDate | 2012-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b4704b89f0be19cbf44d3d461f103d5f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5a1051f01f1ad02b962e667ba44d601d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_baff817a177d4a6813aadbbc4c29aa6a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_35047f5e783936d6efaa3e4aa2766add http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a8242162ce22e13dfd0b9552e7211925 |
| publicationDate | 2013-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102584582-B |
| titleOfInvention | Preparing technology of hydroxyethyl acrylate |
| abstract | The invention relates to a preparing technology of hydroxyethyl acrylate, which comprises the following steps of: sucking acrylic acid, a catalyst, a polymerization inhibitor and water by vacuuming, wherein the vacuum degree is kept in the range from -0.99 Mpa to -0.75 Mpa after the sucking is finished; filling nitrogen, wherein the volume ratio of oxygen to nitrogen is 0.01%-0.25%; dropwise adding ethylene oxide under the condition that the mixture is heated to 80-85 DEG C, wherein the pressure is ensured to be less than or equal to 60 KPa through controlling the dropping speed of ethylene oxide, the mole ratio of ethylene oxide to acrylic acid is (1.02-1.06):1, and the reaction temperature is controlled to be 90-100 DEG C through the cooling of cooling water; stopping the cooling water for natural temperature rising after the dropwise adding is finished, and sampling and detecting after the temperature decreases, wherein the addition reaction is regarded to be finished if the mass percentage is less than 0.5%; removing light components such as ethylene oxide, water and acrylic acid under absolute vacuum condition after the addition reaction is finished, transferring an intermediate product into an intermediate kettle, adding 0.5-5 per mill of water in mass percentage and distilling at reduced pressure to obtain hydroxyethyl acrylate. The product obtained by the method provided by the invention has high hydroxyethyl acrylate content and low impurity content. |
| priorityDate | 2012-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 67.