GB644451A - Process for the condensation of sulphonic acids - Google Patents
Process for the condensation of sulphonic acidsInfo
- Publication number
- GB644451A GB644451A GB30711/47A GB3071147A GB644451A GB 644451 A GB644451 A GB 644451A GB 30711/47 A GB30711/47 A GB 30711/47A GB 3071147 A GB3071147 A GB 3071147A GB 644451 A GB644451 A GB 644451A
- Authority
- GB
- United Kingdom
- Prior art keywords
- naphthalene
- sulphonic acids
- urea
- sulphonic
- heated
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
- C14C3/18—Chemical tanning by organic agents using polycondensation products or precursors thereof
- C14C3/20—Chemical tanning by organic agents using polycondensation products or precursors thereof sulfonated
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
- C07C309/01—Sulfonic acids
- C07C309/28—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
- C07C309/45—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton
- C07C309/51—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton at least one of the nitrogen atoms being part of any of the groups, X being a hetero atom, Y being any atom
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
Tanning, wetting and emulsifying agents are prepared by condensing aromatic sulphonic acids with a compound which contains in the molecule an active methylol group and an amino group, and which has been made from urea or thiourea and ammonia condensed together with an aldehyde in acid solution. As sulphonic acids are specified b -naphthalene-, propyl-naphthalene-, and lignin-sulphonic acids, and those products prepared from alkyl-naphthalene sulphonic acids having wetting and emulsifying properties. In an example, formalin, and ammonium sulphate are heated together in solution at 70 DEG C., urea is slowly added, and the mixture kept heated for several hours. b -naphthalene sulphonic acid is then added to the resinous product and the mixture heated at 100 DEG C., and then, after cooling, neutralized wholly or partly with ammonia, caustic soda, AR(OH)3, Cr(OH)3, or by buffering. In a modification, a phenolic, urea, or other synthetic resin free of sulphonic groups may be included in the reaction mixture.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU644451X | 1946-02-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB644451A true GB644451A (en) | 1950-10-11 |
Family
ID=10979846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30711/47A Expired GB644451A (en) | 1946-02-05 | 1947-11-19 | Process for the condensation of sulphonic acids |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB644451A (en) |
-
1947
- 1947-11-19 GB GB30711/47A patent/GB644451A/en not_active Expired
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