Scratch resistant polypropylene
US8183312B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2010 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | May 18, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2555/40
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are scratch resistant polypropylene molded parts comprising a) a polypropylene substrate and incorporated therein a combination of b) an alpha, beta-unsaturated carboxylic reagent functionalized olefin polymer or copolymer, c) a primary or secondary fatty acid amide and d) a nucleating agent selected from the group consisting of sodium benzoate, 2,2′-methylene-bis(4,6-di-tert-butylphenyl)phosphate, zinc glycerolate, calcium salt of 1,2-dicarboxylic acid cyclohexane and sodium salt of 1,2-dicarboxylic acid norbornane. Also disclosed is a method for providing scratch resistance to a polypropylene molded part by incorporating said additives. The polypropylene substrate is for instance polypropylene homopolymer or thermoplastic polyolefin (TPO). Component b) is for instance maleated polypropylene or the reaction product of an alpha-olefin and maleic anhydride. The fatty acid amide is for instance stearyl erucamide or oleyl palmitamide. The molded parts are suitable for automotive parts. The molded parts also advantageously contain a filler, for example talc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.