http://rdf.ncbi.nlm.nih.gov/pubchem/patent/TW-200846387-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a12dc638de2dca2519315103d177f5e9 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F261-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F263-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F265-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F283-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F283-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-91 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-06 |
| filingDate | 2007-05-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_55ff4ae951684f5847ba9b4b761e8613 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_67501ece5f15edbd2595e93f77641fec |
| publicationDate | 2008-12-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | TW-200846387-A |
| titleOfInvention | Method of improving thermal stability of the poly-3-hydroxybutyrates (PHB) |
| abstract | The thermal stability of the poly-3-hydroxybutyrates (PHB) was improved by grafting maleic anhydride onto the PHB. It was obtained that the purified PHB had a better thermal stability, a faster crystallization rater, and a higher melting temperature than the pristine PHB. The MA was effectively grafted on the PHB by solution grafting, melt grafting, and mechanical grafting methods. The degree of MA grafted was increased with increasing the amounts of the initiator and MA. The thermal stability of the PHB was significantly enhanced by the MA grafted because the degradation reaction was blocked by the steric hindrance of the grafted MA. Additionally, a faster crystallization rate and a higher melting temperature were obtained from the MA grafted PHB. Nonetheless, the residual MA and initiator could lead to the early degradation of PHB. The PHB grafted with the mechanical grafting methods had the best thermal stability than those prepared by other two methods. The solution and melt grafting methods deteriorate the thermal resistance of the reacted PHB while the mechanical grafting method improves the thermal stability and increases the crystallization rate and melting temperature of the grafted PHB. A grafting amount as low as 0. 07 wt.% MA can result in a significant improvement of the heat resistance of PHB. |
| priorityDate | 2007-05-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.