Patent · US Expired

Propylene ureas and process for their preparation

US6348594B2 · kind B2 · utility

0Cited by

2References

6Claims

0Family size

Assignee

Dainippon Ink and Chemicals, Inc. · JP

Inventors

Kai-Uwe Gaudl · Wantage, US
Artur Lachowicz · Berlin, DE
Gerwald Grahe · Berlin, DE

Key dates

Filing date	Jul 30, 1999
Grant date	Feb 19, 2002
Priority date	—
Expiry date	Jul 30, 2019

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD06M15/423
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Urea derivatives of formula 1 for the hardening of hydroxyl group-containing polymers, wherein each of R1-R7 is a hydrogen atom or a linear or branched C1-C4-alkyl group, preferably methyl, ethyl, n-propyl, isopropyl, n-butyl or isobutyl, R1-R7 being identical or different, and R8 is a linear or branched C1-C6-alkyl group, preferably methyl, ethyl, n-propyl, isopropyl, n-butyl or isobutyl. The compounds 1 are prepared by reacting a compound 2 wherein R9 is a member selected from the group consisting of —CHO, —CH(OH)—OR8 and —CH(OH)2 with a urea derivative 3 optionally followed by etherification of the reaction product with an alcohol X—OH, wherein X is a linear or branched C1-C4-alkyl group.

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