http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1200959-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d2051317369a779747701bc0ebe411a4 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J29-28 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J9-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J29-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-00 |
| filingDate | 1968-11-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f2d45f3f7b3d7e1ab3878fc4f3c7bd21 |
| publicationDate | 1970-08-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1200959-A |
| titleOfInvention | Method for metallizing phosphor screens |
| abstract | 1,200,959. Luminescent screens. RCA CORPORATION. 4 Nov., 1968 [26 Dec., 1967], No. 52227/68. Heading H1D. In a process for depositing an aluminium coating on a luminescent screen by first applying an aqueous emulsion consisting essentially of an acrylate copolymer on which the aluminium is evaporated and which is subsequently volatilized by baking, the emulsion includes one or more of the following additives: (a) a neutralizing agent to adjust the pH to a range of 4-8 to improve wetting and reduce the tendency of phosphor particles to hydrolyse. Ammonium hydroxide works well in a pH range of 6À8-7À5 especially on europiumactivated yttrium or gadolinium oxide phosphors, and sodium or potassium hydroxide or morpholine are suitable alternatives. (b) a boric acid complex of polyvinyl alcohol, preferably in an amount of 0À2-1% by weight of the acrylate solids in the emulsion, to reduce blistering of the film over bare glass areas during baking. (c) colloidal silica, preferably 1-10% by weight of the acrylate solids and in a particle size of about 15 millimicrons. (d) soluble silicate, such as sodium, potassium or lithium silicate, preferably 1-2% by weight: this and/or the colloidal silica improves adherence of the metal to the glass. The basic emulsion may include 5-15% by weight of combinations of alkyl acrylates, alkyl methacrylates, acrylic acid, and methacrylic acid, and may include a plasticizer such as dibutyl phthalate, butyl glycolate, methyl phthalate, tri-butoxyethyl phosphate, or ethyl glycolate in an amount up to 10% of the weight of acrylate copolymer. The fluorescent screen may be a colour screen for a television display tube of the multi-dot, multi-line or penetration type. |
| priorityDate | 1967-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 57.