Olefin block copolymer and sheet-shaped molded body
US9035006B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2012 |
| Grant date | May 19, 2015 |
| Priority date | — |
| Expiry date | Apr 1, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2323/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present description relates to an olefin block copolymer preferably useful to form nonslip pads due to excellences in elasticity and heat resistance, and a sheet-shaped molded body comprising the olefin block copolymer The olefin block copolymer includes a plurality of blocks or segments, each of which includes an ethylene or propylene repeating unit and an α-olefin repeating unit at different weight fractions. The olefin block copolymer satisfies a defined relationship when a load of 5 to 10 kg is applied to a sheet-shaped molded body of the block copolymer for 12 hours or longer at a temperature of 60° C. or higher, and then removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.