Metal carboxylate salt nucleating or clarifying agent compounds and related polymer compositions and methods
US7566797B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2006 |
| Grant date | Jul 28, 2009 |
| Priority date | — |
| Expiry date | Apr 14, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2602/42
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Nucleating agent compounds are used in polymers, such as polypropylene, to improve both the properties and processing characteristics of the polymer. Some nucleating agents may be used also as clarifiers to reduce the visual haze in finished polymeric articles, thereby increasing clarity of finished polymeric articles. Compounds of a carboxylate salt which employ a combination of an amide group and a metal cation salt perform well as nucleating agents, and provide substantial clarity benefits in a polymer. Other compounds of the invention may employ metal carboxylate salts in combination with an ester group. In other embodiments of the invention a dimer of such compounds may be employed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.