CA2261634A1 - Method for the preparation of melamine - Google Patents

Method for the preparation of melamine

Info

Publication number
CA2261634A1
CA2261634A1 CA002261634A CA2261634A CA2261634A1 CA 2261634 A1 CA2261634 A1 CA 2261634A1 CA 002261634 A CA002261634 A CA 002261634A CA 2261634 A CA2261634 A CA 2261634A CA 2261634 A1 CA2261634 A1 CA 2261634A1
Authority
CA
Canada
Prior art keywords
melamine
melt
vessel
preparation
cooling vessel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002261634A
Other languages
French (fr)
Other versions
CA2261634C (en
Inventor
Julius Gerardus Theodorus Van Wijck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DSM IP Assets BV
Original Assignee
Dsm N.V.
Julius Gerardus Theodorus Van Wijck
Dsm Ip Assets B.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from NL1003709A external-priority patent/NL1003709C2/en
Application filed by Dsm N.V., Julius Gerardus Theodorus Van Wijck, Dsm Ip Assets B.V. filed Critical Dsm N.V.
Publication of CA2261634A1 publication Critical patent/CA2261634A1/en
Application granted granted Critical
Publication of CA2261634C publication Critical patent/CA2261634C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Phenolic Resins Or Amino Resins (AREA)

Abstract

The invention relates to a high-pressure process for producing melamine from urea in which highly pure melamine is obtained by transferring melamine melt leaving a melamine reactor to a cooling vessel where the melamine melt is cooled to a temperature of between 1°C and 30°C above the melting point of melamine after which the liquid melamine can be transferred to a second cooling vessel in which vessel the melamine melt is further cooled using cold ammonia by which solid melamine is obtained.
CA002261634A 1996-07-30 1997-07-21 Method for the preparation of melamine Expired - Fee Related CA2261634C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1003709A NL1003709C2 (en) 1996-07-30 1996-07-30 Process for preparing melamine.
NL1003709 1996-07-30
PCT/NL1997/000431 WO1998004533A1 (en) 1996-07-30 1997-07-21 Method for the preparation of melamine

Publications (2)

Publication Number Publication Date
CA2261634A1 true CA2261634A1 (en) 1998-02-05
CA2261634C CA2261634C (en) 2006-04-04

Family

ID=36143397

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002261634A Expired - Fee Related CA2261634C (en) 1996-07-30 1997-07-21 Method for the preparation of melamine

Country Status (1)

Country Link
CA (1) CA2261634C (en)

Also Published As

Publication number Publication date
CA2261634C (en) 2006-04-04

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed