http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H09309967-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_132721b781afede2175d04e894580568 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29K23-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29K105-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29L7-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C47-00 |
| filingDate | 1996-09-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9c2e5db1004e398f0567400c69323256 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7735b74acc9d3a39c9fae33fd805be8c |
| publicationDate | 1997-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H09309967-A |
| titleOfInvention | Method for producing polypropylene-based resin foam |
| abstract | (57) [Abstract] An uncrosslinked polypropylene-based resin has a high closed cell ratio from a low expansion ratio to a high expansion ratio because the foaming temperature range during extrusion foaming is narrow. It was not easy to obtain a good foam. SOLUTION: The following approximate expression (1) of an angular frequency: ω (rad / sec.) And a storage elastic modulus: G '(dyn / cm 2 ) given by dynamic viscoelasticity measurement of a resin at 230 ° C. In the relation shown in, 0 <α ≦ 1.00, 3.65 ≦ β ≦ An uncrosslinked polypropylene resin having a dynamic viscoelastic behavior of 4.50 is melt-kneaded with a foaming agent in an extruder at high temperature and high pressure, and then extruded and foamed under a lower pressure in the extruder through a die attached to the tip of the extruder. To obtain a polypropylene resin foam. ## EQU00001 ## logG '=. Alpha..log.omega. +. Beta .... (1) (where .alpha. And .beta. Are the slopes and intercepts between the two points of logG' corresponding to log.omega. =-1 and log.omega. = 0. .) |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2011046103-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2001179805-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-WO2011046103-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-5770634-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2002128934-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8552116-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102574948-A |
| priorityDate | 1995-11-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 56.