Patent · US Expired

1,1,2-Tris-(o/p-hydroxyphenyl)-1-phenyl-ethanes

US4048200A · kind A · utility

6Cited by

5References

4Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Erhard Tresper · Krefeld, DE
Dieter Neuray · Krefeld, DE
Dieter Freitag · Krefeld, DE

Key dates

Filing date	Feb 24, 1976
Grant date	Sep 13, 1977
Priority date	—
Expiry date	Feb 24, 1996

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C205/20
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

New [1,1,2-tris-(o/p-hydroxyphenyl)-1-phenyl-ethanes] and their preparation by reacting acetophenone derivatives with phenol at temperatures between -20.degree. and 200.degree. C.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.