http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2019017631-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e643df164d408263905077a4d3016558 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A63B37-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A63B41-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K3-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K3-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L21-00 |
| filingDate | 2017-07-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e52e7a9b811c6d657ca156bb7e9680e9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_962be66d21b18b17105969d73be2bdd7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_763e95f92bd1701930a0ee9074a1e179 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8b210ab3a7d3527108f9886067dae40f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d33dd8a0cc97902b38929e8f16986bd7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a75817360b04217dcd7412002c1423fc |
| publicationDate | 2019-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2019017631-A |
| titleOfInvention | Rubber material for tennis ball and tennis ball |
| abstract | To provide a tennis ball rubber material and a tennis ball capable of reducing gas leakage without deteriorating resilience performance. The tennis ball rubber material has a flatness DL of 50 or more, which is obtained by dividing the base rubber and its average particle diameter D 50 (μm) by its average thickness T (μm). Containing certain fillers. This rubber material has a gas permeability coefficient GPS (cm 3 · cm / cm 2 / sec / cmHg), a loss tangent tan δS at 20 ° C., and a rubber material obtained by replacing this filler with kaolin clay having a flatness DL of 20. The gas permeability coefficient GPL (cm 3 · cm / cm 2 / sec / cmHg) and the loss tangent tan δL at 20 ° C. are expressed by equation (1): GPL / GPS ≧ 1.02 and equation (2): | tan δL-tan δS | ≦ 0.03 is satisfied. The tennis ball 2 includes a core 4 made of this rubber material, a felt portion 6 that covers the core 4, and a seam portion 8. [Selection] Figure 1 |
| priorityDate | 2017-07-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 60.