http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1127799-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_43867d322e887ce7440387bdf2c956b3 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-18 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-16 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-18 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-60 |
| filingDate | 1979-10-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1982-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4fd775c6f647f050698cf213f7937568 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2394289c064d00c7d3a8a7b84e674235 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_200374cc36802340dede3af4ff20db9b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_61230505e4994e3ac42e1874aaea31dc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4d256e4fb9da729a2f90bc7f74dea481 |
| publicationDate | 1982-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1127799-A |
| titleOfInvention | Process for preparing a copolymer |
| abstract | ABSTRACT OF THE DISCLOSURE A process is provided herein for preparing an ethylene-butene-1 copolymer having a melt index ranging from 0 01 to 10 and a density ranging from 0 910 to 0 945 In such process, ethylene and 1 to 30 molt thereof of butene-1 are copolymerized in a substantially solvent-free vapor phase condition and in the presence of a catalyst consisting of a solid substance (namely, one containing a magnesium-containing inorganic solid compound and a titanium compound and/or a vanadium compound) and an organoaluminum compound. The process of this invention provides very easily a medium or low density ethylene polymer which has excellent trans-parency and melts higher and is stronger than conventional low density polyethylenes prepared according to high pressure process. The copoly-mer obtained is superior in transparency and elasticity. It also exhi-bits a very high resistance to impact and to environmental stress crack-ing. Consequently, the copolymer can be formed into films, sheets, hol-low container, electric wires and various other products by means of known methods, e g , extrusion molding, blow molding, injection molding, press forming and vacuum forming, and thus can be used in various appli-cations. Particularly in the field of films, the copolymer is useful be-cause of excellent transparency, anti-blocking property, heat sealing property and flexibility. It is possible to attain an equal or even superior transparency to that of a high pressure process film, and the strength which is a specially important physical property required of a film is much higher than that of a high pressure process polyethylene Besides, a large elongation permits forming of an extremely thin film The crystallinity to relatively high and the heat resistance is good, attordlng an unsticky film of high transparency, for which reason the copolymer is especially suitable for use as a film for packing or agri-cultural use. It is also suited to blow molding because of high trans-parency, stiffness and resistance to environmental stress cracking. |
| priorityDate | 1978-10-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 103.