http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-574247-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_73ee0bacab5a7576a6a3244747f6ea99 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-06 |
| filingDate | 1944-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1945-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-574247-A |
| titleOfInvention | Improved plasticised polyvinyl alcohol compositions |
| abstract | Incorporating in polyvinyl alcohol, under substantially anhydrous conditions, a solid polymer of formaldehyde as a plasticising agent. The polyvinyl alcohol may have any saponification number up to 500. Specified polymers are the polyoxymethylenes, trioxymethylene, trioxane, and paraformaldehyde. Known plasticisers such as polyglycols, triethylene glycol, sugar, acetamide, ethanol acetamide, ethanol formamide, thiocyanates, sulphamides, glycerol and glycerol esters may also be present. The solid polymer may be incorporated by mechanically mixing the two powders, or by milling the polyvinyl alcohol and adding the solid polymer during the milling operation, or the polymer may be added during the preparation of the polyvinyl alcohol. Dyes, fillers and insolubilising agents may be added. The compositions are suitable for use in the preparation of articles such as gaskets by moulding, extrusion or other fabrication methods. A table giving the properties of mixtures of polyvinyl alcohol and one or both of glycerol and paraformaldehyde is given. Specification 401,653 is referred to. |
| priorityDate | 1943-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.