Invention Grant
US07824565B2 Urea composition having reduced compressibility, cake formation and dust formation, and process for its preparation
有权
具有降低的压缩性，饼形成和粉尘形成的尿素组合物及其制备方法
- Patent Title: Urea composition having reduced compressibility, cake formation and dust formation, and process for its preparation
- Patent Title (中): 具有降低的压缩性，饼形成和粉尘形成的尿素组合物及其制备方法
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Application No.: US11795258Application Date: 2006-01-16
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Publication No.: US07824565B2Publication Date: 2010-11-02
- Inventor: Ruud van Belzen , Luc Vanmarcke , Erik Bijpost , John van der Hoeven
- Applicant: Ruud van Belzen , Luc Vanmarcke , Erik Bijpost , John van der Hoeven
- Applicant Address: NO Oslo
- Assignee: Yara International ASA
- Current Assignee: Yara International ASA
- Current Assignee Address: NO Oslo
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: NL1028019 20050114; NL1028198 20050204
- International Application: PCT/NL2006/000023 WO 20060116
- International Announcement: WO2006/091077 WO 20060831
- Main IPC: C05C9/00
- IPC: C05C9/00 ; B01D9/02 ; C08K5/29
Abstract:
Colorfast urea composition having reduced compressibility, cake formation and tendency of re-crystallization of the urea granulate, wherein the granulate further contains at least two different biodegradable polymers, of which at least one polymer is preferably a polyalkenyl amine compound. The other polymer is preferably polyaspartic acid or polyvinyl alcohol. The invention further relates to a process for the preparation of such a urea composition.
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