BR8002684A - Processo para a preparacao de melanina - Google Patents

Processo para a preparacao de melanina

Info

Publication number
BR8002684A
BR8002684A BR8002684A BR8002684A BR8002684A BR 8002684 A BR8002684 A BR 8002684A BR 8002684 A BR8002684 A BR 8002684A BR 8002684 A BR8002684 A BR 8002684A BR 8002684 A BR8002684 A BR 8002684A
Authority
BR
Brazil
Prior art keywords
melanin
preparation
Prior art date
Application number
BR8002684A
Other languages
English (en)
Portuguese (pt)
Inventor
Hardeveld R Van
Original Assignee
Stamicarbon
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26645525&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR8002684(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from NL7903473A external-priority patent/NL7903473A/nl
Priority claimed from NL7907368A external-priority patent/NL7907368A/nl
Application filed by Stamicarbon filed Critical Stamicarbon
Publication of BR8002684A publication Critical patent/BR8002684A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
    • C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
    • C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
    • C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
    • C07D251/40—Nitrogen atoms
    • C07D251/54—Three nitrogen atoms
    • C07D251/56—Preparation of melamine
    • C07D251/60—Preparation of melamine from urea or from carbon dioxide and ammonia

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)
  • Cosmetics (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
BR8002684A 1979-05-03 1980-04-30 Processo para a preparacao de melanina BR8002684A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7903473A NL7903473A (nl) 1979-05-03 1979-05-03 Werkwijze voor het bereiden van melamine.
NL7907368A NL7907368A (nl) 1979-10-04 1979-10-04 Werkwijze voor het bereiden van melamine.

Publications (1)

Publication Number Publication Date
BR8002684A true BR8002684A (pt) 1980-12-16

Family

ID=26645525

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8002684A BR8002684A (pt) 1979-05-03 1980-04-30 Processo para a preparacao de melanina

Country Status (11)

Country Link
EP (1) EP0018696B1 (en:Method)
BR (1) BR8002684A (en:Method)
CA (1) CA1128516A (en:Method)
CS (1) CS216533B2 (en:Method)
DE (1) DE3060796D1 (en:Method)
ES (1) ES491104A0 (en:Method)
HU (1) HU184277B (en:Method)
IN (1) IN153310B (en:Method)
NO (1) NO801284L (en:Method)
PL (1) PL126936B1 (en:Method)
YU (1) YU117780A (en:Method)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5514796A (en) * 1995-06-07 1996-05-07 Melamine Chemicals, Inc. Melamine of improved purity produced by high-pressure, non-catalytic process
NL1012467C2 (nl) * 1999-06-29 2001-01-02 Dsm Nv Werkwijze voor het afscheiden van melamine uit melaminehoudende gasmengels.
NL1012466C2 (nl) * 1999-06-29 2001-01-02 Dsm Nv Werkwijze voor de bereiding van melamine uit ureum.
AU763504B2 (en) * 1999-07-27 2003-07-24 Agrolinz Melamin Gmbh Process for preparing melamine
DE102008032425B4 (de) * 2008-07-10 2015-07-30 Air Liquide Global E&C Solutions Germany Gmbh Verfahren und Anlage zur Herstellung von Melamin
CN105503758B (zh) * 2016-01-18 2019-05-14 尹明大 一种三聚氰胺生产系统和工艺

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1670286A1 (de) * 1967-11-11 1971-01-28 Basf Ag Verfahren zur Aufarbeitung der bei der Melaminsynthese anfallenden Abgase

Also Published As

Publication number Publication date
HU184277B (en) 1984-07-30
EP0018696B1 (en) 1982-09-01
EP0018696A1 (en) 1980-11-12
PL126936B1 (en) 1983-09-30
PL223964A1 (en:Method) 1981-02-13
ES8101056A1 (es) 1980-12-01
DE3060796D1 (en) 1982-10-28
CS216533B2 (en) 1982-11-26
NO801284L (no) 1980-11-04
IN153310B (en:Method) 1984-06-30
YU117780A (en) 1982-10-31
CA1128516A (en) 1982-07-27
ES491104A0 (es) 1980-12-01

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