http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1408920-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_af99df08b153738cd418446a75d09bfc |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-2885 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-65 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-28 |
| filingDate | 1972-10-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1975-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1408920-A |
| titleOfInvention | Rigid polyurethane compoitions |
| abstract | 1408920 Polyurethanes DOW CHEMICAL CO 17 Oct 1972 [21 Oct 1971] 47846/72 Heading C3R A composition which rapidly sets to a solid rigid urethane resin article having an elongation value of less than 100% and a density of at least 1 gram/c.c. on addition of an organo-metal catalyst comprises (A) a polyether polyol which is the adduct of a polyhydric initiator compound having a functionality of 3-8, with a vicinal epoxy compound, the polyol having a hydroxyl equivalent weight of from 60 to 230; (B) an organic polyisocyanate; (C) a liquid monohydroxy halogenated alkane having a boiling point below 150 C. and in which the hydroxyl group is reactive with an isocyanate group. In forming the rigid article components (A) and (B) are present in amounts so as to provide an NCO : OH ratio of 0À8 to 2, component (C) is present in quantities of 0À1-10% wt. of A + B + C; and the organo-metal catalyst is present in quantities of 0À02-5% wt. of A + B + C. Suitable components C are fluorinated, chlorinated and brominated ethanols and propanols. Suitable catalysts include organo metal compounds of Sn, Zn, Pb, Hg, Cd, Bi, Co, Sb and Fe such as stannous octoate, dibutyltin dilaurate, dibutyl tin diacetate, ferric acetyl acetonate, lead octoate, lead oleate, phenylmercuric propionate, cobalt napthenate, lead naphthenate and mixtures thereof. Suitable polyhydric compounds for component (A) include glycerine, trimethylolpropane, pentaerythritol, sorbitol, sucrose and mixtures thereof; and suitable epoxy compounds for (A) include alkylene oxides and substituted alkylene oxides such as ethylene oxide, propylene oxide, butylene oxide, epichloro(or bromo-, or iodo-)hydrin, styrene oxide or mixtures thereof. Suitable polyisocyanates as component (B) include tolylene diisocyanate, xylylene diisocyanate, hexamethylene diisocyanate, diphenylmethane diisocyanate, phenylenediisocyanate, hydrogenated methylene diphenyldiisocyanate, polymethylene polyphenyl isocyanate and mixtures thereof. Optional ingredients include inert fillers such as sand, microballoons, glass fibres, asbestos, aluminium granules, silicon carbide powder, colouring agents such as pigments, e.g. chromic oxide and ferric oxide, dyes, and mixtures thereof. In Examples 1-5 solid rigid polyurethane articles are prepared by mixing a polyether polyol prepared from glycerine and propylene oxide, tolylene diisocyanate, 2-chloro-ethanol, or 1- chloro-2-propanol, and lead octoate and pouring the mixture into a polyethyleneterephthalate tray or polyethylene beaker. In Example 6 the article is prepared from a polyether polyol of propylene oxide and pentaerythritol, xylylene diisocyanate, 2-chloro-ethanol and lead octoate. Uses.-A casting material for bearing surfaces, annular spacers, decorative objects, furniture, gears or other machine components, threaded protective plugs and caps. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2191208-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111518251-A |
| priorityDate | 1971-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 85.