http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-734783-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3b43a9873f4b98896475e2454c53b416 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-12 |
| filingDate | 1952-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b5409a918e1546a1740ec7679b411761 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6d94c2f7beb7962374afa894c7525de0 |
| publicationDate | 1955-08-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-734783-A |
| titleOfInvention | New neutral orthophosphate esters |
| abstract | Plasticizers for polyvinyl chloride comprise compounds of the general formula <FORM:0734783/IV (a)/1> where R1 and R2, which may be alike or different each represents a chlorinated or unchlorinated phenyl, cresyl, xylyl or alkyl-phenyl radical, the last-mentioned having at least one branched side chain and containing a total of from 4 to 9 carbon atoms in the side-chain or chains, R3 and R4 each represent alkyl radicals, one of which may be substituted by a carbalkoxy or alkoxy group, R3 and R4 together (including any substituent) containing from 3 to 20 carbon atoms. The preparation of such compounds, and in particular those in which R1 and R2 represent the phenyl radical and the group <FORM:0734783/IV (a)/2> is derived from octon-2-ol, 1-n-butoxy-propane-2-ol, methyl isobutyl carbinol, and methyl ricinoleate are described (see Group IV (b)). Specifications 734,764, 734,765 and 734,768 [Group IV (b)], are referred to.ALSO:The invention comprises neutral orthophosphate esters of the general formula <FORM:0734783/IV (b)/1> where R1 and R2, which may be alike or different, each represents a chlorinated or unchlorinated phenyl, cresyl, xylyl or alkylphenyl radical, the last-mentioned having at least one branched side-chain and containing a total of from 4 to 9 carbon atoms in the sidechain or chains, R3 and R4 represent alkyl radicals, one of which may be substituted by a carbalkoxy or alkoxy group, R3 and R4 together (including any substituent) containing from 3 to 20 carbon atoms. Such esters are obtained by adding a di-substituted phosphoryl chloride of the formula <FORM:0734783/IV (b)/2> progressively in proportion as it is used up in the reaction to a refluxing mixture of a hydrocarbon solvent and one equivalent of a substituted or unsubstituted secondary alcohol of the general formula R3.CH(OH).R4 or to one equivalent of the alcohol heated alone in vacuo to a temperature not exceeding 100 DEG C., in the presence of a catalytic quantity of a tertiary amine or its hydrogen chloride salt. In examples there are reacted together in the above manner in the presence of pyridine (1) octan-2-ol and diphenyl phosphoryl chloride to give di-phenyl 1-methylheptyl phosphate. In a comparison experiment the amine is omitted; (2) 1-n-butoxy-propane-2-ol (obtained by condensing normal butanol with propylene oxide in the presence of acid catalysts) and diphenyl phosphoryl chloride; (3) methyl isobutyl carbinol and diphenyl phosphoryl chloride; (4) methyl ricinoleate and diphenyl phosphoryl chloride. The products can be used as plasticizers for polyvinyl chloride. Specifications 734,764, 734,765 and 734,768 are referred to. |
| priorityDate | 1952-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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