NL1008571C2 - Kristallijn melamine. - Google Patents
Kristallijn melamine. Download PDFInfo
- Publication number
- NL1008571C2 NL1008571C2 NL1008571A NL1008571A NL1008571C2 NL 1008571 C2 NL1008571 C2 NL 1008571C2 NL 1008571 A NL1008571 A NL 1008571A NL 1008571 A NL1008571 A NL 1008571A NL 1008571 C2 NL1008571 C2 NL 1008571C2
- Authority
- NL
- Netherlands
- Prior art keywords
- melamine
- powder
- multicrystalline
- melamine powder
- ammonia
- Prior art date
Links
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 title claims abstract description 178
- 229920000877 Melamine resin Polymers 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 claims abstract description 23
- 241001550224 Apha Species 0.000 claims abstract description 16
- YZEZMSPGIPTEBA-UHFFFAOYSA-N 2-n-(4,6-diamino-1,3,5-triazin-2-yl)-1,3,5-triazine-2,4,6-triamine Chemical compound NC1=NC(N)=NC(NC=2N=C(N)N=C(N)N=2)=N1 YZEZMSPGIPTEBA-UHFFFAOYSA-N 0.000 claims abstract description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 118
- 238000001816 cooling Methods 0.000 claims description 48
- 229910021529 ammonia Inorganic materials 0.000 claims description 46
- 239000000843 powder Substances 0.000 claims description 30
- 238000005507 spraying Methods 0.000 claims description 13
- 239000002826 coolant Substances 0.000 claims description 12
- 238000001704 evaporation Methods 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 4
- 238000004040 coloring Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 claims description 2
- 238000007710 freezing Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims 1
- 238000007711 solidification Methods 0.000 claims 1
- 238000004383 yellowing Methods 0.000 claims 1
- 238000004090 dissolution Methods 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 5
- 239000002904 solvent Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 36
- 239000000047 product Substances 0.000 description 30
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 23
- 239000004202 carbamide Substances 0.000 description 23
- 239000007789 gas Substances 0.000 description 22
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 229910002092 carbon dioxide Inorganic materials 0.000 description 9
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- 239000012482 calibration solution Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- YSRVJVDFHZYRPA-UHFFFAOYSA-N melem Chemical compound NC1=NC(N23)=NC(N)=NC2=NC(N)=NC3=N1 YSRVJVDFHZYRPA-UHFFFAOYSA-N 0.000 description 4
- 238000005201 scrubbing Methods 0.000 description 4
- 239000001393 triammonium citrate Substances 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000002835 absorbance Methods 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000004438 BET method Methods 0.000 description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000004247 glycine and its sodium salt Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 150000007974 melamines Chemical class 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- JZLWSRCQCPAUDP-UHFFFAOYSA-N 1,3,5-triazine-2,4,6-triamine;urea Chemical compound NC(N)=O.NC1=NC(N)=NC(N)=N1 JZLWSRCQCPAUDP-UHFFFAOYSA-N 0.000 description 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 235000011299 Brassica oleracea var botrytis Nutrition 0.000 description 1
- 240000003259 Brassica oleracea var. botrytis Species 0.000 description 1
- 229910021580 Cobalt(II) chloride Inorganic materials 0.000 description 1
- 241000219112 Cucumis Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 1
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- YSKUZVBSHIWEFK-UHFFFAOYSA-N ammelide Chemical compound NC1=NC(O)=NC(O)=N1 YSKUZVBSHIWEFK-UHFFFAOYSA-N 0.000 description 1
- MASBWURJQFFLOO-UHFFFAOYSA-N ammeline Chemical compound NC1=NC(N)=NC(O)=N1 MASBWURJQFFLOO-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000008098 formaldehyde solution Substances 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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
- C07D251/62—Purification of melamine
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Recrystallisation Techniques (AREA)
- Phenolic Resins Or Amino Resins (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Fertilizers (AREA)
- Photoreceptors In Electrophotography (AREA)
- Cold Cathode And The Manufacture (AREA)
- Paper (AREA)
Priority Applications (23)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1008571A NL1008571C2 (nl) | 1998-03-12 | 1998-03-12 | Kristallijn melamine. |
| TW088103410A TW526185B (en) | 1998-03-12 | 1999-03-05 | Crystalline melamine |
| GB9905419A GB2335191B (en) | 1998-03-12 | 1999-03-09 | Crystalline Melamine |
| AU28619/99A AU748368B2 (en) | 1998-03-12 | 1999-03-10 | Crystalline melamine |
| CA002323431A CA2323431C (en) | 1998-03-12 | 1999-03-10 | Crystalline melamine |
| AT99909417T ATE268326T1 (de) | 1998-03-12 | 1999-03-10 | Kristallines melamin |
| EP04076569A EP1479672A1 (en) | 1998-03-12 | 1999-03-10 | Crystalline melamine |
| ES99909417T ES2222687T3 (es) | 1998-03-12 | 1999-03-10 | Melamina cristalina. |
| PL342738A PL197256B1 (pl) | 1998-03-12 | 1999-03-10 | Wielokrystaliczny proszek melaminowy oraz sposób jego wytwarzania |
| IDW20001750A ID25646A (id) | 1998-03-12 | 1999-03-10 | Melamin kristalin |
| CNB998039012A CN1149203C (zh) | 1998-03-12 | 1999-03-10 | 晶态蜜胺 |
| EP99909417A EP1073646B1 (en) | 1998-03-12 | 1999-03-10 | Crystalline melamine |
| RU2000125687/04A RU2232756C2 (ru) | 1998-03-12 | 1999-03-10 | Кристаллический меламин |
| KR1020007009816A KR100553074B1 (ko) | 1998-03-12 | 1999-03-10 | 결정질 멜라민 |
| JP2000535632A JP2002506064A (ja) | 1998-03-12 | 1999-03-10 | 結晶質メラミン |
| PCT/NL1999/000130 WO1999046251A1 (en) | 1998-03-12 | 1999-03-10 | Crystalline melamine |
| DE69917768T DE69917768T2 (de) | 1998-03-12 | 1999-03-10 | Kristallines melamin |
| EG24399A EG22546A (en) | 1998-03-12 | 1999-03-11 | Crystalline melamine |
| AT0043499A AT500514B1 (de) | 1998-03-12 | 1999-03-11 | Kristallines melamin |
| DE19910909A DE19910909B4 (de) | 1998-03-12 | 1999-03-11 | Kristallines Melamin |
| US09/266,809 US6166204A (en) | 1998-03-12 | 1999-03-12 | Crystalline melamine |
| SA99191211A SA99191211B1 (ar) | 1998-03-12 | 1999-03-21 | ميلامين بلوري |
| NO20004508A NO316678B1 (no) | 1998-03-12 | 2000-09-08 | Krystallinsk melamin |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1008571A NL1008571C2 (nl) | 1998-03-12 | 1998-03-12 | Kristallijn melamine. |
| NL1008571 | 1998-03-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL1008571C2 true NL1008571C2 (nl) | 1999-07-28 |
Family
ID=19766729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL1008571A NL1008571C2 (nl) | 1998-03-12 | 1998-03-12 | Kristallijn melamine. |
Country Status (20)
| Country | Link |
|---|---|
| US (1) | US6166204A (enExample) |
| EP (2) | EP1073646B1 (enExample) |
| JP (1) | JP2002506064A (enExample) |
| KR (1) | KR100553074B1 (enExample) |
| CN (1) | CN1149203C (enExample) |
| AT (2) | ATE268326T1 (enExample) |
| AU (1) | AU748368B2 (enExample) |
| CA (1) | CA2323431C (enExample) |
| DE (2) | DE69917768T2 (enExample) |
| EG (1) | EG22546A (enExample) |
| ES (1) | ES2222687T3 (enExample) |
| GB (1) | GB2335191B (enExample) |
| ID (1) | ID25646A (enExample) |
| NL (1) | NL1008571C2 (enExample) |
| NO (1) | NO316678B1 (enExample) |
| PL (1) | PL197256B1 (enExample) |
| RU (1) | RU2232756C2 (enExample) |
| SA (1) | SA99191211B1 (enExample) |
| TW (1) | TW526185B (enExample) |
| WO (1) | WO1999046251A1 (enExample) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1013456C2 (nl) * | 1999-11-02 | 2001-05-03 | Dsm Nv | Kristallijn melamine en de toepassing in aminoformaldehydeharsen. |
| SE523775C2 (sv) * | 2002-03-19 | 2004-05-18 | Kawasaki Steel Co | Förfarande för beläggning av pulver i en fluidiserad bädd |
| NL1022764C2 (nl) * | 2003-02-24 | 2004-08-26 | Dsm Nv | Natte quench. |
| US7404875B2 (en) | 2004-04-28 | 2008-07-29 | Georgia-Pacific Consumer Products Lp | Modified creping adhesive composition and method of use thereof |
| KR101882043B1 (ko) * | 2011-03-28 | 2018-07-25 | 디에스엠 아이피 어셋츠 비.브이. | 멜라민 축합 생성물의 제조 방법 |
| CN109529397B (zh) * | 2018-12-28 | 2024-07-02 | 四川金象赛瑞化工股份有限公司 | 一种凝华结晶设备及结晶方法 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4565867A (en) * | 1984-01-05 | 1986-01-21 | Melamine Chemicals, Inc. | Anhydrous high-pressure melamine synthesis |
| WO1996023778A1 (de) * | 1995-02-03 | 1996-08-08 | Agrolinz Melamin Gmbh | Verfahren zur reinigung von melamin |
| EP0747366A2 (en) * | 1995-06-07 | 1996-12-11 | Melamine Chemicals, Inc. | Melamine of improved purity produced by high-pressure, non-catalytic process |
| EP0808836A1 (en) * | 1996-05-14 | 1997-11-26 | Dsm N.V. | Method for the preparation of melamine |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3681274A (en) * | 1970-07-23 | 1972-08-01 | Us Plywood Champ Papers Inc | Ammonical fluorides for formaldehyde resin systems |
| US4473119A (en) * | 1983-04-14 | 1984-09-25 | Marathon Oil Company | Process for selectively plugging subterranean formations with a melamine resin |
| DE3546893C3 (de) * | 1984-01-05 | 1998-01-29 | Melamine Chemicals Inc | Wasserfreie Hochdruck-Melamin-Synthese |
| IE57911B1 (en) * | 1984-01-05 | 1993-05-19 | Melamine Chemicals Inc | Production of melamine |
| FI96028C (fi) * | 1993-07-01 | 1996-04-25 | Kemira Oy | Menetelmä melamiinin valmistamiseksi |
| IT1261841B (it) * | 1993-08-23 | 1996-06-03 | Conser Spa | Procedimento per la produzione di melammina ad alta purezza. |
| AT402294B (de) * | 1994-12-23 | 1997-03-25 | Agrolinz Melamin Gmbh | Verfahren zur herstellung von hochreinem melamin |
| AT402295B (de) * | 1994-12-23 | 1997-03-25 | Agrolinz Melamin Gmbh | Verfahren zur reinigung von melamin |
| AT403579B (de) * | 1995-12-07 | 1998-03-25 | Agrolinz Melamin Gmbh | Verfahren zur herstellung von hochreinem melamin |
| NL1003328C2 (nl) * | 1996-06-13 | 1997-12-17 | Dsm Nv | Werkwijze voor het bereiden van melamine. |
| US6375788B1 (en) * | 1996-07-16 | 2002-04-23 | Premark Rwp Holdings, Inc. | Method of coating melamine resin on laminating paper |
| NL1003709C2 (nl) * | 1996-07-30 | 1998-02-05 | Dsm Nv | Werkwijze voor het bereiden van melamine. |
| EP1604985A3 (en) * | 1997-06-02 | 2007-08-08 | DSM IP Assets B.V. | Crystalline melamine |
-
1998
- 1998-03-12 NL NL1008571A patent/NL1008571C2/nl not_active IP Right Cessation
-
1999
- 1999-03-05 TW TW088103410A patent/TW526185B/zh not_active IP Right Cessation
- 1999-03-09 GB GB9905419A patent/GB2335191B/en not_active Expired - Fee Related
- 1999-03-10 CN CNB998039012A patent/CN1149203C/zh not_active Expired - Fee Related
- 1999-03-10 AT AT99909417T patent/ATE268326T1/de active
- 1999-03-10 EP EP99909417A patent/EP1073646B1/en not_active Revoked
- 1999-03-10 KR KR1020007009816A patent/KR100553074B1/ko not_active Expired - Fee Related
- 1999-03-10 WO PCT/NL1999/000130 patent/WO1999046251A1/en not_active Ceased
- 1999-03-10 EP EP04076569A patent/EP1479672A1/en not_active Withdrawn
- 1999-03-10 ID IDW20001750A patent/ID25646A/id unknown
- 1999-03-10 DE DE69917768T patent/DE69917768T2/de not_active Expired - Lifetime
- 1999-03-10 RU RU2000125687/04A patent/RU2232756C2/ru not_active IP Right Cessation
- 1999-03-10 ES ES99909417T patent/ES2222687T3/es not_active Expired - Lifetime
- 1999-03-10 PL PL342738A patent/PL197256B1/pl unknown
- 1999-03-10 AU AU28619/99A patent/AU748368B2/en not_active Ceased
- 1999-03-10 JP JP2000535632A patent/JP2002506064A/ja active Pending
- 1999-03-10 CA CA002323431A patent/CA2323431C/en not_active Expired - Fee Related
- 1999-03-11 DE DE19910909A patent/DE19910909B4/de not_active Expired - Fee Related
- 1999-03-11 AT AT0043499A patent/AT500514B1/de not_active IP Right Cessation
- 1999-03-11 EG EG24399A patent/EG22546A/xx active
- 1999-03-12 US US09/266,809 patent/US6166204A/en not_active Expired - Lifetime
- 1999-03-21 SA SA99191211A patent/SA99191211B1/ar unknown
-
2000
- 2000-09-08 NO NO20004508A patent/NO316678B1/no not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4565867A (en) * | 1984-01-05 | 1986-01-21 | Melamine Chemicals, Inc. | Anhydrous high-pressure melamine synthesis |
| WO1996023778A1 (de) * | 1995-02-03 | 1996-08-08 | Agrolinz Melamin Gmbh | Verfahren zur reinigung von melamin |
| EP0747366A2 (en) * | 1995-06-07 | 1996-12-11 | Melamine Chemicals, Inc. | Melamine of improved purity produced by high-pressure, non-catalytic process |
| EP0808836A1 (en) * | 1996-05-14 | 1997-11-26 | Dsm N.V. | Method for the preparation of melamine |
Also Published As
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NL1008571C2 (nl) | Kristallijn melamine. | |
| AU731077B2 (en) | Crystalline melamine | |
| CN1130353C (zh) | 制备蜜胺的方法 | |
| NL1006191C2 (nl) | Kristallijn melamine. | |
| EA007456B1 (ru) | Кристаллический меламин и его применение в аминоформальдегидных смолах | |
| MXPA00008894A (en) | Crystalline melamine | |
| JP2002502416A (ja) | メラミンの製造法 | |
| NL1018936C2 (nl) | Werkwijze voor het verkrijgen van kristallijn melamine uit een melaminesmelt. | |
| MXPA99011121A (en) | Crystalline melamine | |
| EA003336B1 (ru) | Способ получения меламина | |
| US6274731B1 (en) | Method for preparing melamine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| SD | Assignments of patents |
Owner name: DSM IP ASSETS B.V. Effective date: 20050915 |
|
| TD | Modifications of names of proprietors of patents |
Owner name: KONINKLIJKE DSM N.V. Effective date: 20050915 |
|
| SD | Assignments of patents |
Effective date: 20111208 |
|
| V1 | Lapsed because of non-payment of the annual fee |
Effective date: 20121001 |