http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-779783-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_805883408c251b3b421ba4bcfb2c0eb7 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G8-26 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G8-26 |
| filingDate | 1954-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1957-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-779783-A |
| titleOfInvention | Process for the manufacture of liquid reaction products from vinyl esters and aldehydes |
| abstract | A composition comprises 100 parts of polyvinyl chloride with 60 parts of a low polymer acetalized vinyl ester produced by heating under reflux vinyl acetate and butyraldehyde in the presence of a peroxide which is readily decomposable into volatile constituents, the mol. ratio of vinyl acetate to butyraldehyde in the polymer being 4 : 1 (see Group IV (b)).ALSO:Liquid addition products are produced by heating under reflux 1 part of a vinyl ester with 2-9 parts of an aldehyde in the presence of a peroxide which is easily decomposable into readily volatile constituents at the reaction temperature, e.g. diacetyl peroxide, hydrogen peroxide, vinyl acetate peroxide or di-(t-butyl) peroxide. The reaction products may be split up by distillation in vacuo into a volatile component consisting of a 1 : 1 addition product of the aldehyde and vinyl ester, and a non-volatile component consisting of low polymer, acetalized vinyl esters. Suitable vinyl esters are the acetate, propionate, butyrate, benzoate and diethylacetic acid ester. Any aldehyde may be used, saturated aliphatic aldehydes being preferred. The peroxide catalysts are used in proportions of 5-10 per cent based on the weight of the vinyl ester. By hydrolysis followed by dehydration or by splitting off a carboxylic acid from the volatile addition products they are converted to vinyl alkyl ketones and their polymers. The non-volatile components may be used as plasticizers for synthetic resins, e.g. polyvinylchloride (see Group IV (a)). In examples, (1) vinylacetate, butyraldehyde and a solution of diacetyl peroxide in ether or dibutyl phthalate are heated under reflux, and after removing excess butyraldehyde by distillation, the product is distilled under vacuum and the nonvolatile residue is purified by repeated reprecipitation and corresponds to a polymer of 4 mols. of vinyl acetate and 1 mol. of butyraldehyde; (2) in a similar process, the volatile component obtained by vacuum distillation corresponds to a 1 : 1 addition product of vinyl acetate and butyraldehyde; (3) diethylacetic acid vinyl ester and butyraldehyde are reacted together as in (1), freed from butyraldehyde by distillation and then distilled under vacuum giving a non-volatile component and a volatile 1 : 1 addition product which on hydrolysis yields diethylacetic acid. |
| priorityDate | 1953-03-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.