AT344723B - METHOD FOR REDUCING THE BIURET CONTENT OF UREA - Google Patents

METHOD FOR REDUCING THE BIURET CONTENT OF UREA

Info

Publication number: AT344723B
Authority: AT; Austria
Prior art keywords: urea; reducing; biuret content; biuret; content
Prior art date: 1973-05-16

Application number

AT406174A

Other languages

German (de)

Other versions

ATA406174A (en

Original Assignee

Mexico Guanos

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.)

1973-05-16

Filing date

1974-05-16

Publication date

1978-08-10

1973-05-16 Priority claimed from IT2416173A external-priority patent/IT987491B/en

1974-05-16 Application filed by Mexico Guanos filed Critical Mexico Guanos

1977-12-15 Publication of ATA406174A publication Critical patent/ATA406174A/en

1978-08-10 Application granted granted Critical

1978-08-10 Publication of AT344723B publication Critical patent/AT344723B/en

Links

XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title 1
OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 title 1
239000004202 carbamide Substances 0.000 title 1

Classifications

- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
- C07C273/14—Separation; Purification; Stabilisation; Use of additives
- C07C273/16—Separation; Purification

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Phenolic Resins Or Amino Resins (AREA)

AT406174A 1973-05-16 1974-05-16 METHOD FOR REDUCING THE BIURET CONTENT OF UREA AT344723B (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
GB2327273A GB1404098A (en)	1973-05-16	1973-05-16	Process for reducing the biuret content in urea
IT2416173A IT987491B (en)	1973-05-16	1973-05-16	PROCEDURE TO REDUCE THE CONTENT OF BIURET IN THE UREA

Publications (2)

Publication Number	Publication Date
ATA406174A ATA406174A (en)	1977-12-15
AT344723B true AT344723B (en)	1978-08-10

Family

ID=26256424

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AT406174A AT344723B (en)	1973-05-16	1974-05-16	METHOD FOR REDUCING THE BIURET CONTENT OF UREA

Country Status (18)

Country	Link
AR (1)	AR213610A1 (en)
AT (1)	AT344723B (en)
BE (1)	BE815096A (en)
BG (1)	BG21603A3 (en)
BR (1)	BR7403961D0 (en)
CA (1)	CA1019344A (en)
CH (1)	CH617672A5 (en)
CS (1)	CS203001B2 (en)
DD (1)	DD113897A5 (en)
EG (1)	EG11437A (en)
FR (1)	FR2229690B1 (en)
GB (1)	GB1404098A (en)
IN (1)	IN142126B (en)
LU (1)	LU70102A1 (en)
NL (1)	NL7406618A (en)
SE (1)	SE420196B (en)
SU (1)	SU953978A3 (en)
ZA (1)	ZA743136B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4345099A (en) *	1981-08-10	1982-08-17	Union Oil Company Of California	Method of selectively removing biuret from urea and compositions for use therein
DE102004005907B4 (en)	2004-02-05	2006-01-05	Uhde Gmbh	Plant for the production of biuretarmem urea-containing fertilizer granules
RO131559A2 (en) *	2011-11-23	2016-12-30	Farid Alekovich Batullin	Method for preparing crystalline carbamide of high purity
DE102019118702A1 (en)	2019-07-10	2021-01-14	Thyssenkrupp Ag	REDUCING BIURET GENERATION IN UREA PRODUCTION
CN115738359B (en) *	2022-10-20	2025-09-16	江苏可兰素环保科技有限公司	Extraction and purification process of urea particles

1973
- 1973-05-16 GB GB2327273A patent/GB1404098A/en not_active Expired
1974
- 1974-05-13 AR AR253709A patent/AR213610A1/en active
- 1974-05-15 EG EG175/74A patent/EG11437A/en active
- 1974-05-15 BR BR3961/74A patent/BR7403961D0/en unknown
- 1974-05-16 IN IN1069/CAL/1974A patent/IN142126B/en unknown
- 1974-05-16 BE BE144365A patent/BE815096A/en not_active IP Right Cessation
- 1974-05-16 CH CH674574A patent/CH617672A5/en not_active IP Right Cessation
- 1974-05-16 NL NL7406618A patent/NL7406618A/xx active Search and Examination
- 1974-05-16 AT AT406174A patent/AT344723B/en not_active IP Right Cessation
- 1974-05-16 CA CA200,114A patent/CA1019344A/en not_active Expired
- 1974-05-16 LU LU70102A patent/LU70102A1/xx unknown
- 1974-05-16 FR FR7417058A patent/FR2229690B1/fr not_active Expired
- 1974-05-16 SE SE7406519A patent/SE420196B/en not_active IP Right Cessation
- 1974-05-16 SU SU742026956A patent/SU953978A3/en active
- 1974-05-16 DD DD178556A patent/DD113897A5/xx unknown
- 1974-05-16 ZA ZA00743136A patent/ZA743136B/en unknown
- 1974-05-16 BG BG026705A patent/BG21603A3/en unknown
- 1974-05-16 CS CS743519A patent/CS203001B2/en unknown

Also Published As

Publication number	Publication date
EG11437A (en)	1977-08-15
BG21603A3 (en)	1976-07-20
FR2229690A1 (en)	1974-12-13
DE2423890B2 (en)	1976-04-15
ZA743136B (en)	1975-08-27
CA1019344A (en)	1977-10-18
AR213610A1 (en)	1979-02-28
DE2423890A1 (en)	1974-12-12
DD113897A5 (en)	1975-07-05
CS203001B2 (en)	1981-02-27
LU70102A1 (en)	1976-04-13
BR7403961D0 (en)	1974-12-24
SE420196B (en)	1981-09-21
FR2229690B1 (en)	1976-12-24
NL7406618A (en)	1974-11-19
AU6904674A (en)	1975-11-20
ATA406174A (en)	1977-12-15
SU953978A3 (en)	1982-08-23
CH617672A5 (en)	1980-06-13
IN142126B (en)	1977-06-04
GB1404098A (en)	1975-08-28
BE815096A (en)	1974-11-18

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Legal Events

Date	Code	Title	Description
1988-09-15	ELJ	Ceased due to non-payment of the annual fee
2010-03-15	ELJ	Ceased due to non-payment of the annual fee