http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1828303-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1f8713f6ace083308920724981592661 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2314-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2205-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2205-025 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2205-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2023-42 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L23-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L23-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L23-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L23-10 |
| filingDate | 2005-12-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2009-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a36df836dac439d0c3810927823c39da http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6c1cdd4d49dd671ea3d8601c23d2407f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1ce0806b96c8de0b8dbc369dedd40f37 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8b2be0ea41792af29602c234c6a266d6 |
| publicationDate | 2009-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1828303-B1 |
| titleOfInvention | Heterogeneous polymer blends and molded articles therefrom |
| abstract | This invention relates to a molded article comprising a heterogeneous blend comprising: 1) from 60 to 99 weight percent of one or more semi-crystalline polymers (based upon the weight of the semi-crystalline and semi-amorphous polymers), each semi-crystalline polymer comprising propylene and from 0 to 5 weight alpha-olefin comonomer (based upon the weight of the polymer), said semicrystalline polymers each having a melting point between 100 and 170°C and a melt flow rate of 200 dg/min or less; and 2) from 1 to 40 weight % of one or more semi-amorphous polymers (based upon the weight of the semi-crystalline and semi-amorphous polymers), each semi-amorphous polymer comprising propylene and from 10 to 25 weight % of one or more C2 and/or C4 to C 10 alpha-olefin comonomers, said semi-amorphous polymers each having : a) a heat of fusion of 4 to 70 J/g; and b) a melt flow rate of 0.1 to 200 dg/min; and c) an intermolecular compositional distribution as determined by thermal fractionation in hexane such that 85% by weight or more of the polymer is isolated as one or two adjacent, soluble fractions with the balance of the polymer in immediately preceding or succeeding fractions; and wherein each of these fractions has a wt% comonomer content with a difference of no greater than 20 wt% relative to the average wt% comonomer content of the copolymer; and d) an Mw/Mn of 1.5 to 4, and e) a propylene triad tacticity, as measured by 13C NMR, of 75% or greater; where the blend has : i) a melt flow rate of 0.5 to 200 dg/min; and ii) less than 5 weight % filler, based upon the weight of the polymers and the filler; and iii) a permanent set of greater than 65%; and iv) a haze of 20% or less on a 1 mm injection molded chip; and the molded part has : a) a thickness of 250 µm to 10mm; and b) a notched Izod impact strength at 23°C of 80 J/m or more; and c) a notched Izod impact strength at 0°C of 27 J/m or more; and d) a 1% secant flexural modulus of 1035 MPa or lower; and e) an ultimate elongation where greater than 50°,/0 of 5 test specimens suffer no break through extension to 1000%; and f) a resistance to stress whitening of Hunter color ΔL of 15 or lower. |
| priorityDate | 2004-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 297.