http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-739116-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cab52e15e149d28af8f65d84a58daeca |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K3-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K3-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L83-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L83-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-70 |
| filingDate | 1953-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1955-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-739116-A |
| titleOfInvention | Improvements in or relating to silicone rubbers |
| abstract | A mixture convertible by heat to the solid elastic state comprises (a) an organopolysiloxane of the formula RnSiO 4-n/2 , wherein each R is a methyl or phenyl radical, n has an average value of 1.95 to 2.05, and at least 50 per cent of the R radicals are methyl; (b) a silica filler; (c) a vulcanizing agent, and (d) at least 0.5 part by weight per 100 parts of the polysiloxane of a metallic zirconate salt, a zirconium silicate, or a metal fluorozirconate. Ingredients specified: fillers-diatomaceous earth, silica aerogels, fumed silicas and xerogels, preferably having a pore volume of at least 3 ccs. per gram and a heat of wetting in hexamethyldisiloxane of 0.1 to 1.8 calories per cc. of pore volume, and minor amounts of ZnO, TiO2 and Fe2O3; vulcanizing agents-t.-butyl perbenzoate, and benzoyl, benzoyl acetyl, dinaphthyl, benzoyl lauroyl and halogenated or nitrated benzoyl peroxides; zirconium compounds-barium, cadmium, calcium, strontium and magnesium zirconates; zirconium, zinc zirconium, barium zirconium, calcium zirconium and magnesium zirconium silicates; and sodium, potassium, lithium, caesium and calcium fluorozirconates. The silicas are preferably used in amount of 20 to 80 parts (by weight), the vulcanizing agents in amount of 1 to 10 parts and the zirconium compounds in amount of 0.5 to 40 parts per 100 parts of the siloxane. Dimethyl polysiloxane and copolymers of dimethylsiloxane and phenylmethylsiloxane or diphenylsiloxane are used in the examples. |
| priorityDate | 1952-10-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 50.