Flexible thermoplastic polyolefin elastomers for buffering transmission elements in a telecommunications cable
US6215931A · kind A · utility
155Cited by
15References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1999 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Jan 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/44384
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A telecommunications cable element having a transmission element disposed in a buffer tube made from thermoplastic polyolefin elastomeric buffer material is disclosed. The polyolefin elastomeric buffer material has a modulus of elasticity below about 500 MPa at room temperature and a modulus of elasticity below about 1500 MPa at -40.degree. C. Preferentially, the thermoplastic polyolefin elastomer material forming the buffer tube has an elongation to break below about 500% and a Melt Flow Index above about 3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.