http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-612023-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0235f5aeeff44e5b1733138b721f5c06 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C44-06 |
| filingDate | 1946-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1948-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-612023-A |
| titleOfInvention | Improvements in methods of making cellular thermoplastic sheet material and to receptacles made therefrom |
| abstract | A cellular thermoplastic sheet material is made by forming a composition comprising synthetic rubber, a hard thermoplastic resin, a vulcanizing agent and a chemical blowing agent, sheeting the composition, plying several of the sheets together and pressing the sheets under heat. The sheet material may be moulded and drawn to any desired shape. The thermoplastic resins used may be cyclicized rubbers, or cyclicized balata, Marbon S, Isolac or Plioform. The rubber used may be natural such as guayule, balata or gutta percha, a synthetic such as Buna S, Buna N, (Buna is a Registered Trade Mark), Hycar OR-15, Neoprene or Butyl. Curatives or accelerators may be added. A typical composition comprises:-Marbon S, Hycar OR-15, Guayule, Zinc Oxide, Agerite (antioxidant), Altax (accelerator) (Registered Trade Mark), sulphur, Unicel (nitrogen-liberating agent). The rubber, resin and sulphur are thoroughly mixed at a temperature sufficient to soften the resin. The gas producing agent is then added and the material calendered into a sheet. Several of these sheets are superposed with the grain of the different sheets extending to an angle to each other and pressed between heated platens to bond the sheets together and activate the blowing agent. |
| priorityDate | 1944-06-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.