http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110615880-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G12-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09J161-32 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G12-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09J161-32 |
| filingDate | 2019-09-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-09-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-09-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110615880-B |
| titleOfInvention | Epoxy compound and polyol prepolymer modified urea-formaldehyde resin and preparation method thereof |
| abstract | The invention discloses an epoxy compound and polyol prepolymer modified urea-formaldehyde resin and a preparation method thereof. The method firstly adopts a very low F/U feed ratio (less than 1.1), and simultaneously reduces the content of free formaldehyde in the resin by adjusting the pH value, the temperature and the time in the reaction process; and then, by introducing an epoxy compound with a long-chain structure and a polyol prepolymer, the flexibility of the adhesive structure is increased by the long chain, the bonding strength of the resin is improved by the epoxy group with multiple functionality, the storage stability of the urea-formaldehyde resin with low molar ratio is improved by adding a small amount of stabilizer, and the water resistance and the bonding strength of the resin are improved by adding the modifier. The urea-formaldehyde resin prepared by the invention has the advantages of low free formaldehyde content, high bonding strength, good water resistance and the like, and the formaldehyde emission of the artificial board prepared by using the adhesive reaches E 0 The grade standard. |
| priorityDate | 2019-09-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.