http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-642453-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b3ec41365be7e229ee1b7b21f124a90c |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-353 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C271-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-205 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C271-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-353 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-205 |
| filingDate | 1948-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1950-09-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-642453-A |
| titleOfInvention | A process for the manufacture of urethanes |
| abstract | Simple urethanes of formul <FORM:0642453/IV (a)/1> and <FORM:0642453/IV (a)/2> and their esters with, e.g. oleic acid, their ethers with alcohols or dimethylolurea, and the products obtained when the various hydroxy groups of the dimethylolurea ethers are esterified with e.g. oil fatty acids, are used in the preparation of resinous products by replacing the whole or part of the phenol in a phenolformaldehyde type resin, or the polyhydric alcohol in an alkyd resin. The urethanes and derivatives may also be reacted with rosin and alkylolamines, with or without glycerol, to give "ester gum" resins. The Specification as open to inspection under Sect. 91 comprises also the following examples of the preparation of resinous products and paint emulsions: the simple acyclic and the cyclic urethanes are esterified with oleic acid, phthalic anhydride, succinic acid and maleic anhydride; the cyclic urethane is esterified with rosin; the cyclic urethane is condensed with p - tert. - butylphenol di - alcohol; the cyclic urethane is etherified with dimethylolurea and then reacted with octyl alcohol or castor oil; the oleic acid esterified simple cyclic and acyclic urethanes are used to emulsify a resin phase of glycerol phthalate, soya glyceride, pine oil and cobalt driers with an aqueous phase of muriatic casein (treated with ammonia) and phenol. This subject-matter does not appear in the Specification as accepted.ALSO:A urethane of formula CH2OH.C.Me(NHCOOEt).CH2OH is prepared by heating 2-amino-2-methyl-1 : 3-propanediol with diethyl carbonate. A cyclic urethane of formula <FORM:0642453/IV (b)/1> is prepared from the above urethane by the continuation of heat until cyclization occurs with elimination of ethanol. The simple urethane and the cyclic urethane may be esterified by organic acids, e.g. oleic acid, or they may be etherified with dimethylolurea. The etherified dimethylolurea may itself be etherified with ROH (where R is alkyl, aryl or heterocyclic) or it may be reacted with organic acids, e.g. oil fatty acids, which may esterify a methylol group attached to either the urea or the urethane part of the molecule. Examples are given of the preparation of the simple acyclic and of the cyclic urethane. The Specification as open to inspection under Sect. 91 comprises also examples of the esterification of the acyclic and cyclic urethanes with oleic acid to give viscous, partly crystalline products, and refers to the preparation of p-tert.-butylphenol dialcohol from p-tert.- butylphenol and formaldehyde. This subject-matter does not appear in the Specification as accepted. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9943720-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9942494-A1 |
| priorityDate | 1939-04-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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