Patent · US Expired

Polyamino acid ester copolymers

US5910564A · kind A · utility

154Cited by

7References

10Claims

0Family size

Assignee

Th. Goldschmidt. AG · DE

Inventors

Burghard Gruning · Essen, DE
Harald Rau · Würzburg, DE
Jorg Simpelkamp · Essen, DE
Christian Weitemeyer · Essen, DE

Key dates

Filing date	Dec 6, 1996
Grant date	Jun 8, 1999
Priority date	—
Expiry date	Dec 6, 2016

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC11D3/3719
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Copolymers derived from polyamino acids with at least 75% of the units present selected from the group consisting of structural units having the general formulas (I) and (II) in which the structural elements A are identical or different trifunctional hydrocarbon radicals with 2 or 3 C atoms, wherein the copolymer contains at least three units of formula (I).

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