http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1109771-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e42e2f38a84e1167f8c90fa8886f08d2 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L3-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L5-00 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D129-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L61-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L29-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B27-00 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L3-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L5-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B32B27-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L61-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D129-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L29-04 |
| filingDate | 1967-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1968-04-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1109771-A |
| titleOfInvention | Insoluble films based on polyvinyl alcohol and process for the preparation thereof |
| abstract | An aqueous film-forming composition contains as the three film-forming ingredients (a) polyvinyl alcohol, (b) starch or dextrin, and (c) a water-soluble polymerizable reaction product of formaldehyde with urea, an amine or a phenol, together with a plasticizer and a polymerization catalyst for the reaction product, e.g. ammonium chloride, sulphate or nitrate. The composition may also contain sodium or potassium tetraborate and the plasticizer may be a glycol, polyethylene or polypropylene glycol, sorbitol, xylitol or glycerol. A dye, emulsifier or gelling agent may also be present. In Example 1, a film is prepared by dissolving potato dextrin and sodium tetraborate in water brought up to 80 DEG C. under vacuum and adding successively this solution and glycerol to a solution of high molecular weight completely hydrolysed polyvinyl alcohol at 90-95 DEG C. Aqueous dimethylolurea and ammonium chloride are added, agitation and a temperature of 90 DEG C. are maintained for one hour, and the mass is cast into a film. Examples 3 and 4 are similar, while Example 5 uses polyvinyl alcohol of medium molecular weight and Example 6 varying quantities of sodium tetraborate. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2227245-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2227245-B |
| priorityDate | 1966-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 58.