http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-948373-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_db1177cf8d12af450b60087aa16ddd8f |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2111-00413 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2111-00612 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W30-91 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2111-52 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B28-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B28-14 |
| filingDate | 1961-10-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1964-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-948373-A |
| titleOfInvention | Improvements in and relating to foamed bodies |
| abstract | A method of producing a sound and/or thermal insulating body of cellular gypsum comprises mixing gypsum and water with a reinforcing agent comprising polyvinyl acetate, polyvinyl chloride, resorcinol - formaldehyde resin or phenolic resin, and a foaming agent, introducing a gas into the mixture to form a cell structure therein and then shaping and drying the mixture, the mixture containing such an amount of the reinforcing agent as to allow the walls of the majority of the cells to burst to form a more open cell structure in which the individual cells communicate with each other. Material with some intercommunicating cells is prepared (for sound insulation) by using a small amount of reinforcing agent. With larger amounts closed-cell material (for thermal insulation) is obtained. Paper, fibrous material or textile material, soaked in water or a solution of synthetic resin (to shrink it) can be applied to one or both surfaces of a foamed body or panel of the material. A covering of fibrous material, perforated or unperforated metal or ordinary hard gypsum can also be applied. A foamed body can also be prepared of at least two layers of different hardness, with a higher synthetic resin content (e.g. about 19% by weight) for the harder than that present in the softer (e.g. 9% by weight). Fillers such as asbestos, glass wool or rock wool can be added to the compositions. In an example, a composition of gypsum, melamine resin, polyvinyl acetate and a surface-tension reducing agent is mixed and air is then beaten in. The mixture is poured on to a base paper soaked in aqueous polyvinyl acetate emulsion and a further such paper is applied to the upper surface. The panel, before the paper dries, is transferred to another mould, the lower part of which supports a number of pins for perforating the paper covering. A covering composition of gypsum is then poured in and forced round the panel while the pins penetrate the paper. When the gypsum has crystallized the gypsum coated panel is then heated in oven at 50-60 DEG C. Specification 799,072 is referred to. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1088800-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1088800-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/AU-2007209000-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101374644-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/AU-2011244993-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2007086041-A1 |
| priorityDate | 1960-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.