http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0687158-A
Outgoing Links
Predicate | Object |
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assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ad2cd796f8c4dcb425ddcc68707d3444 |
classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29K25-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29L7-00 |
classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C55-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 |
filingDate | 1992-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_23509d8fa73434e9132302edb2727ceb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_75169bdd42220e74b25d121a768d1eeb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d0c3127678b0463942a07a8a395c5dce http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_26c7e7de6f012a963c67f83bbc60bc7c |
publicationDate | 1994-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber | JP-H0687158-A |
titleOfInvention | Method for producing syndiotactic polystyrene biaxially stretched film |
abstract | (57) [Summary] [Object] The present invention relates to a method for producing a biaxially stretched syndiotactic polystyrene film, and more specifically, a syndiotactic polystyrene excellent in heat resistance, mechanical properties, thickness uniformity, and flatness. The present invention relates to a method for producing a biaxially stretched film with high productivity. [Structure] A syndiotactic step including a stretching step of stretching an unstretched sheet of a syndiotactic polystyrene-based polymer in a longitudinal direction and then a transverse direction, and a heat-setting treatment step of performing tension heat setting in a tenter after this stretching step. In the method for producing a tic polystyrene biaxially stretched film, the stretching in the longitudinal direction is performed in a temperature range of 10 ° C. or more higher than the glass transition temperature of an unstretched sheet to a temperature of cold crystallization temperature or less, and transverse stretching is performed in two or more. A method for producing a syndiotactic polystyrene biaxially stretched film, which is carried out in a temperature zone, and the temperature of the final zone of transverse stretching is in the temperature range of 70 ° C. lower than the maximum temperature of heat setting to the maximum temperature. |
isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H08323877-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9617004-A1 |
priorityDate | 1992-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 52.