Polyolefin composition with high filler loading capacity
US7737206B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 18, 2005 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Apr 8, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are highly filled thermoplastic olefin compositions and, in particular, thermoplastic olefin compositions that comprise propylene/alpha-olefin copolymers and a high level of organic or inorganic filler. Specifically, the description addresses a filled polymer composition comprising: (a) a first polymer component comprising propylene copolymer having a heat of fusion<about 75 J/g and a triad tacticity of from about 50% to about 99%, the first polymer component having a melt flow rate at 230° C.≦about 800 g/10 min.; and (b) at least about 15% by weight of a filler, based on the total weight of the filled composition. Such compositions are useful as sound barriers, flame retardant compositions, roofing membranes, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.