Patent · US Expired

Process for preparation of hydantoin esters through a masked polyisocyanate-carbodiimide route

US4517353A · kind A · utility

4Cited by

6References

9Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Wilfried Zecher · Leverkusen, DE
Rudolf Merten · Leverkusen, DE
Willi Dunwald · Leverkusen, DE

Key dates

Filing date	Dec 6, 1983
Grant date	May 14, 1985
Priority date	—
Expiry date	Dec 6, 2003

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G73/0616
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

This invention relates to a process for the preparation of compounds containing at least one hydantoin ring in the molecule from carbodiimides having acylurea end groups and .alpha.,.beta.-unsaturated carboxylic acid derivatives and to their further reaction with carboxylic acids containing at least one other reactive group.

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