http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1388348-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_19563fe2f95886f37991424a6bef6761 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-143 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2367-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2367-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W30-62 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-88 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J11-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J11-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-88 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J11-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J11-04 |
| filingDate | 1973-11-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1975-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1388348-A |
| titleOfInvention | Treating polyester for shaping into articles |
| abstract | 1388348 Treating polyesters HORIZONS RESEARCH Inc 14 Nov 1973 52917/73 Heading C3R Clean polyethylene terephthalate is treated by maintaining small pieces thereof under a 0À001- 10 mm. vacuum, and/or under an inert gas, for 4-60 hours at 200-235 C. The gas, e.g. N 2 , Ar, or He, may be at reduced pressure, or it may be a stream of gas at atmospheric pressure. The pieces may be flakes 2-7 mil. thick, of major dimension, e.g. <1 in., and may be made from film 0À1-15 mil thick; a powder, e.g. of particle size as small as 0À001 in.; thin strands; or pellets having at least one dimension ## inch. The polyester may be scrap, e.g. X-ray film, or unused polyester; it may be extruded and pelletized before the heat treatment. Ethylene glycol may be added to the pieces before the heat-treatment. A liquid or solid additive, e.g. 0À05-4% wt. of talc, TiO 2 , Al 2 O 3 , 0À05-0À5% benzophenone, or 0À1-1% C black, may be added to the treated polyester. The polyester may be such that when moulded under heat and pressure before treatment, tensile strength and elongation are respectively <8000 p.s.i. and 0%, and when similarly moulded after treatment, the respective values are >10,000 p.s.i.and >100%. The material may be drawn at 160 C. to a filament which is heat-set at 120 C. or it can be extruded into rods, tubes, and sheets; or it can be injection or compression moulded, preferably immediately after heat treatment. The heat treatment may be performed in a furnace having a stirrer or in a rotating furnace. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2393088-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CH-669559-A5 |
| priorityDate | 1972-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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Total number of triples: 24.