BE360735A - - Google Patents

Info

Publication number

BE360735A

BE360735A BE360735DA BE360735A BE 360735 A BE360735 A BE 360735A BE 360735D A BE360735D A BE 360735DA BE 360735 A BE360735 A BE 360735A

Authority

BE

Belgium

Prior art keywords

urea

formaldehyde

solution

acid

process according

Prior art date

Links

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• WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 103
• XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 98
• 239000004202 carbamide Substances 0.000 claims description 52
• 238000006243 chemical reaction Methods 0.000 claims description 17
• 239000002253 acid Substances 0.000 claims description 15
• 239000000047 product Substances 0.000 claims description 14
• 239000007859 condensation product Substances 0.000 claims description 13
• 238000000034 method Methods 0.000 claims description 13
• 230000007935 neutral effect Effects 0.000 claims description 10
• WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 5
• 238000004519 manufacturing process Methods 0.000 claims description 4
• 238000010306 acid treatment Methods 0.000 claims description 3
• 239000008098 formaldehyde solution Substances 0.000 claims description 3
• 230000007423 decrease Effects 0.000 claims description 2
• 150000001299 aldehydes Chemical class 0.000 claims 1
• 239000000470 constituent Substances 0.000 claims 1
• 239000000243 solution Substances 0.000 description 41
• BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 22
• MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 18
• 238000009835 boiling Methods 0.000 description 16
• HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
• 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 11
• 235000019253 formic acid Nutrition 0.000 description 11
• QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
• QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
• 235000006408 oxalic acid Nutrition 0.000 description 6
• 239000006188 syrup Substances 0.000 description 6
• 235000020357 syrup Nutrition 0.000 description 6
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
• 230000002378 acidificating effect Effects 0.000 description 5
• 238000009833 condensation Methods 0.000 description 5
• 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 5
• 239000011521 glass Substances 0.000 description 5
• 239000007795 chemical reaction product Substances 0.000 description 4
• 230000005494 condensation Effects 0.000 description 4
• 230000015572 biosynthetic process Effects 0.000 description 3
• 239000012670 alkaline solution Substances 0.000 description 2
• 230000001627 detrimental effect Effects 0.000 description 2
• 239000000463 material Substances 0.000 description 2
• 239000000203 mixture Substances 0.000 description 2
• UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
• LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
• 239000003929 acidic solution Substances 0.000 description 1
• 238000005266 casting Methods 0.000 description 1
• 238000010586 diagram Methods 0.000 description 1
• 239000012153 distilled water Substances 0.000 description 1
• 230000000694 effects Effects 0.000 description 1
• 238000001704 evaporation Methods 0.000 description 1
• 230000002349 favourable effect Effects 0.000 description 1
• 239000012634 fragment Substances 0.000 description 1
• 239000011147 inorganic material Substances 0.000 description 1
• 239000011368 organic material Substances 0.000 description 1
• 238000003756 stirring Methods 0.000 description 1
• 238000010792 warming Methods 0.000 description 1