http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1015035-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8efbae6056f7ee0275c50b0f1e7243be |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-225 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-168 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-222 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-22 |
| filingDate | 1963-02-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1965-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1015035-A |
| titleOfInvention | An improved process for preparing foamed polyurethanes |
| abstract | Polyurethane foam is prepared by reacting an organic polyisocyanate with an organic compound having more than one active hydrogen atoms, and water in the presence of a compound of formula Sn(OCOR)2 or R1aSnXb, where R and R1 are hydrocarbon groups, X is chloride, ester, mercapto, hydroxyl or mercapto-ester, and a and b are integers of total 4, and as blowing catalyst a carboxylic acid salt of ammonia, an alkylamine, an alkali metal or an alkaline earth metal. Specified salts are ammonium, including quaternary alkyl ammonium, Li, Na, K, Mg, Ca, Sr, and Ba salts of acids of formula R111 (COOH)n, where n = 1, 2 or 3 and may be derived from the following acids: benzoic, naphthoic, phenylacetic, cinnamic, toluic, methyl toluic, naphthenic, acetic, propionic, butyric, caproic, caprylic, capric, stearic, oleic, and tall oil fatty acids. The reaction may be a single stage in which all the reactants are mixed at room or elevated temperature. Alternatively the catalysts and water may be added to a reaction product of the other reactants containing excess polyisocyanate. A trimethyl-end block dimethylsiloxane may also be present. The compound having more than one active hydrogen atoms may have a molecular weight of at least 500. Specified compounds are polyesters, optionally iso-cyanate modified, polyethylene glycols, polypropylene glycols, polyisocyanate modified polyesteramides, polymercaptans, polyamines, polyisocyanate modified polyalkylene glycols and glycerides of castor oil, hydrogenated castor oil or blown natural oils. The percentage of water may be 0.5-10. There may be 0.005-4.95% of blowing catalyst and 0.01-5 times as much tin compound. R and R1 may be Me, Et, Prn, Pri, Bun, Bui, But, amyl, hexyl, 2-ethylhexyl, heptyl; octyl, nonyl, decyl, undecyl, oleyl, o-, m- and p-tolyl, naphthyl, cyclohexyl or benzyl and X = chloride, laurate, 2-ethylhexoate, mercaptide, lauryl mercaptide or isooctylthio-glycolate. They may be used with or without N-ethylmorpholine. The product may be used for cushions and insulation. In the examples a glycerine centred polypropylene oxide was reacted with a tolylene-2,4 and 2,6-diisocyanate mixture in the presence of trimethyl end-blocked dimethyl polysiloxane, demineralized water, a gelation catalyst and a soap. In Examples (1-10) the gelation catalyst was stannous 2-ethyloctoate and the soap was (1) calcium stearate (2) magnesium stearate (3) barium stearate (4) lithium stearate (5) sodium stearate (6) ammonium tallate (7) potassium oleate (8) strontium 2-ethylhexoate (9) calcium naphthenate (10) ammonium stearate. In other examples the polyalkylene polyol was replaced by a polyester of adipic acid and (11) the gelation catalyst was dibutyltin di-2-ethylhexoate and the soap was a barium stearate/calcium stearate mixture. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4296174-A |
| priorityDate | 1962-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 81.