BE452415A - - Google Patents

Info

Publication number

BE452415A

BE452415A BE452415DA BE452415A BE 452415 A BE452415 A BE 452415A BE 452415D A BE452415D A BE 452415DA BE 452415 A BE452415 A BE 452415A

Authority

BE

Belgium

Prior art keywords

formaldehyde

products

condensation

brown

sulphurous

Prior art date

Links

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• WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 39
• 239000000047 product Substances 0.000 claims description 9
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
• 150000003839 salts Chemical class 0.000 claims description 8
• 238000000034 method Methods 0.000 claims description 6
• 239000007859 condensation product Substances 0.000 claims description 5
• 238000009833 condensation Methods 0.000 claims 1
• 230000005494 condensation Effects 0.000 claims 1
• 238000002360 preparation method Methods 0.000 claims 1
• 229920001864 tannin Polymers 0.000 description 9
• 239000001648 tannin Substances 0.000 description 9
• 235000018553 tannin Nutrition 0.000 description 9
• QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 5
• 239000002253 acid Substances 0.000 description 5
• 239000000203 mixture Substances 0.000 description 5
• 239000010985 leather Substances 0.000 description 4
• GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 4
• 239000007788 liquid Substances 0.000 description 3
• WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 3
• 230000020477 pH reduction Effects 0.000 description 3
• LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical class OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
• 229960000583 acetic acid Drugs 0.000 description 2
• 150000007513 acids Chemical class 0.000 description 2
• 229940101006 anhydrous sodium sulfite Drugs 0.000 description 2
• YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 2
• BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
• 150000002989 phenols Chemical class 0.000 description 2
• 238000010992 reflux Methods 0.000 description 2
• 239000000243 solution Substances 0.000 description 2
• 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
• 101100366988 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) stu-1 gene Proteins 0.000 description 1
• -1 aliphatic aldehydes Chemical class 0.000 description 1
• 239000012670 alkaline solution Substances 0.000 description 1
• 230000015572 biosynthetic process Effects 0.000 description 1
• 238000009835 boiling Methods 0.000 description 1
• 238000004040 coloring Methods 0.000 description 1
• 238000002845 discoloration Methods 0.000 description 1
• 235000019253 formic acid Nutrition 0.000 description 1
• 239000012362 glacial acetic acid Substances 0.000 description 1
• 238000010438 heat treatment Methods 0.000 description 1
• 230000009191 jumping Effects 0.000 description 1
• 239000002932 luster Substances 0.000 description 1
• 235000008001 rakum palm Nutrition 0.000 description 1
• 235000013311 vegetables Nutrition 0.000 description 1