| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2110-0025
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2375-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2375-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2203-182
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2203-14 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-141
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4829
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4883
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-5021
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4804
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-482
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4018
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-7843
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-3206
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-6611 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G101-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-78 |
| filingDate |
2019-04-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2021-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2021-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CN-110054752-B |
| titleOfInvention |
Low-density rigid polyurethane foam and preparation method thereof |
| abstract |
The invention discloses a low-density hard polyurethane foam, which is prepared by respectively premixing a component A and a component B, mixing the components together and foaming the mixture; wherein, the component A comprises the following components in parts by weight: (1) 100 parts of composite polyol; (2) 5-15 parts of cyclopentane; (3) 1.5-6 parts of an amine catalyst; (4) 1-5 parts of a silicon surfactant; (5) 0.8-2.5 parts of water; the combination B comprises: (1) 1-10 parts of butane; (2) 120-220 parts of isocyanate; the raw materials are based on 100 parts of composite polyol. The preparation method comprises the following steps: (1) preparing a component A; (2) preparing a component B; (3) and (3) injecting the component A and the component B into a closed mould, fully reacting, and demoulding to obtain the hard polyurethane foam. The technology is environment-friendly and has excellent performance, and the low-density rigid polyurethane foam and the preparation method thereof. |
| priorityDate |
2019-04-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |