Nucleating agents for polyhydroxyalkanoates and other thermoplastic polyesters and methods for their production and use
US5973100A · kind A · utility
19Cited by
6References
106Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 24, 1998 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Jul 24, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/5317
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A nucleant system for polyhydroxyalkanoates and other thermoplastic polyesters comprises a class of organophosphorous compounds having at least two phosphonic acid moieties. The compounds can be used to effectively increase polymer crystallization rates and result in desirable properties in polymer-derived articles of manufacture, particularly when used in combination with effective nucleating agent solvents, organic metal salts, inorganic metal oxides, metal hydroxides or metal carbonates, and/or weak organic bases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.