http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-900392-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_73ee0bacab5a7576a6a3244747f6ea99 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2110-0008 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2110-0083 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-225 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4009 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-168 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-1875 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-283 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-28 |
| filingDate | 1959-03-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_79191e516fd1a7f657817b5d76a4ef6f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ae49291f09a64c1ffffefae29b635e63 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b4d2a6bc7a83cd129f4e69999b17580a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_79914433e31d62a2d487368c9de8faf3 |
| publicationDate | 1962-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-900392-A |
| titleOfInvention | Improvements in or relating to the manufacture of polyurethanes |
| abstract | An improved process for the manufacture of foamed polyurethanes by the interaction of an organic polyisocyanate, a predominantly secondary hydroxyl-ended polyether containing at least two hydroxyl groups and water, characterized in that interaction is carried out in the presence as catalyst of a basic compound comprising the hydroxide or weak acid salt, said acid having a pK value greater than 4 in water at 25 DEG C., of an alkali metal, alkaline earth metal or of a fully substituted quaternary ammonium, phosphonium or ternary sulphonium radical. Many such catalysts are specified. Specified polyisocyanates are hexamethylene diisocyanate, tolylene diisocyanates, diphenylmethane-4:41-diisocyanate, 3-methyldiphenylmethane-4:41-diisocyanate, m- and p-phenylene diisocyanates, chlorophenylene-2:41-diisocyanate, dicyclohexylmethane diisocyanate, 2:4:6-triisocyanatotoluene and 2:4:41-triisocyanatodiphenyl ether. The process may be continuous or discontinuous and may be effected in the presence of t-amines, non-basic metal catalysts, non-ionic surface-active agents, silicone oils, foam stabilizing agents and fireproofing materials. Neutralizing agents which are neutral at ordinary temperatures but liberate a strong acid at reaction temperatures, e.g. benzene sulphonyl chloride and p-toluene sulphonyl chloride may also be present in the reaction mixture. In the examples, polyurethane foams are made by reacting polypropylene glycol, water and mixtures of tolylene-2:4- and -2:6-diisocyanates in the presence of sodium hydroxide, sodium phenate, sodium methoxide, potassium hydroxide, sodium carbonate, calcium acetate, p-xylylene dipyridinium dichloride and benzyl trimethylammonium hydroxide, many other additives being specified.ALSO:An improved process for the manufacture of foamed polyurethanes by the interaction of an organic polyisocyanate, a predominantly secondary hydroxyl-ended polyether containing at least two hydroxyl groups and water characterized in that interaction is carried out in the presence as catalyst of a basic compound comprising the hydroxide or weak acid salt, said acid having a pK value greater than 4 in water at 25 DEG C. of an alkali metal, alkaline earth metal or of a fully substituted quarternary ammonium phosphonium or ternary sulphonium radical. Many catalysts are specified. Specified polyisocyanates are hexamethylene diisocyanate tolylene diisocyanates, diphenylmethane-4: 41-diisocyanate, 3-methyl-diphenyl methane-4: 41-diisocyanate, m-and p-phenylene diisocyanates, chlorophenylene-2:4-diisocyanate, dicyclohexylmethane diisocyanate, 2: 4: 6-triisocyanato toluene and 2:4: 41 triisocyanatodiphenyl ether. The process may be continuous or discontinuous and may be effected in the presence of t-amines, non-basic metal catalysts, non-ionic surface active agents, silicone oils, foam stabilizing agents and fireproofing agents, silicone oils, foam stabilizing agents and fireproofing materials. Neutralising agents which are neutral at ordinary temperatures but liberate a strong acid at reaction temperatures e.g. benzene sulphonyl-chloride and p-toluene sulphonyl chloride may also be present in the reaction mixture. In examples, polyurethane foams are made by reacting polypropylene glycol, water and mixtures of tolylene-2:4-and-2:6-diisocyanates in the presence of sodium hydroxide, sodium phenate, sodium methoxide, potassium hydroxide, sodium carbonate, calcium acetate, p-xylylene dipyridinium dichloride and benzyl trimethylammonium hydroxide, many other activities being specified. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4242463-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/NL-7706477-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3022093-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4150206-A |
| priorityDate | 1959-03-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 70.