"Fungal strain used to make 2',4,4""-m-terphenyltriols"
US5049498A · kind A · utility
2Cited by
3References
4Claims
0Family size
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Key dates
| Filing date | Dec 24, 1990 |
| Grant date | Sep 17, 1991 |
| Priority date | — |
| Expiry date | Dec 24, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/913
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A. parasiticus is employed to hydroxylate 2'-hydroxyterphenyl compounds to terphenyltriols, which can be used to form branched polycarbonates. The hydroxylation reaction is enhanced by maintaining a sufficient amount of a carbon source in the culture medium-reaction medium to maintain the ammonium level below 300 ppm. during the bioconversion phase. Employment of a mutant strain of A. parasiticus which was isolated following ultraviolet light mutagenesis to reduce its tendency to produce aflatoxins is preferred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.