Powder, compositions thereof, processes for making the same, and articles made therefrom
US8530581B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2012 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Nov 16, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Provided herein is a powder comprising at least one of: (a) a propylene-based elastomer comprising, based on the total weight of said propylene-based elastomer, (i) at least about 60 wt % of propylene-derived units, (ii) about 5 wt % to about 35 wt % of units derived from at least one of ethylene and a C4-C10 alpha-olefin, and said propylene-based elastomer having a heat of fusion, as determined by DSC, of about 75 J/g or less; and (b) a polyolefin-based elastomer having a Shore A hardness, as determined by ISO 868, of less than 95; wherein the powder has an average particle size of from about 30 μm to about 850 μm. The powder is useful for rotational molding and for making articles having unique combination of elasticity, flexibility, and toughness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.