Patent · US Active

Ethylene urea displaying lasting powder flow

US8303872B2 · kind B2 · utility

3Cited by

10References

6Claims

0Family size

Assignee

BASF SE

Inventors

Henry Szafranski · Mannheim, DE
Stefanie Werland · Mannheim, DE
Peter Raatz · Ludwigshafen, DE
Joachim Simon · Grevenbroich, DE

Key dates

Filing date	Dec 10, 2008
Grant date	Nov 6, 2012
Priority date	—
Expiry date	Jul 16, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2982
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for preparing ethylene urea in solid form, in which a water-comprising product melt of ethylene urea is cooled on a breaking-up apparatus and the water content of the solid obtained is from 5 to 15% by weight. Furthermore, the invention relates to ethylene urea as solid prepared by a process according to the invention, wherein the water content of the solid is from 5 to 15% by weight and the solid displays lasting powder flow.

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