Granular composite additive for polyolefin, process for producing the same, and polyolefin composition containing the same
US6787067B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2002 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Sep 10, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/175
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a multi-component granular additive for polyolefins which has a strength and a function which enable the additive to be dust-free and be of components-in-granule type. It comprises 10 parts by mass of a nucleating agent comprising an alkali metal salt or hydroxyaluminum salt of an aromatic monocarboxlylic acid or comprising an alkali metal salt or hydroxyaluminum salt of an acid aromatic phosphoric ester compound, 1 to 50 parts by mass of a phenolic antioxidant, 5 to 50 parts by mass of polyproylene, and 0 to 500 parts by mass of one or more optional additive components other than the nucleating agent and the phenolic antioxidant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.