GB593111A - Improvements in and relating to the manufacture of resinous condensation products - Google Patents
Improvements in and relating to the manufacture of resinous condensation productsInfo
- Publication number
- GB593111A GB593111A GB1443445A GB1443445A GB593111A GB 593111 A GB593111 A GB 593111A GB 1443445 A GB1443445 A GB 1443445A GB 1443445 A GB1443445 A GB 1443445A GB 593111 A GB593111 A GB 593111A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- urea
- formalin
- minutes
- boiling
- 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
- 239000007859 condensation product Substances 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 24
- 238000009835 boiling Methods 0.000 abstract 18
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract 15
- 239000004202 carbamide Substances 0.000 abstract 12
- LSNNMFCWUKXFEE-UHFFFAOYSA-N sulfonic acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 abstract 5
- LSNNMFCWUKXFEE-UHFFFAOYSA-M bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 abstract 4
- 239000003795 chemical substances by application Substances 0.000 abstract 4
- 238000009833 condensation Methods 0.000 abstract 4
- 230000005494 condensation Effects 0.000 abstract 4
- HRZFUMHJMZEROT-UHFFFAOYSA-L 7681-57-4 Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 abstract 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Tris Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 abstract 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 239000004296 sodium metabisulphite Substances 0.000 abstract 3
- 235000010262 sodium metabisulphite Nutrition 0.000 abstract 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 230000002378 acidificating Effects 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 2
- YMRKWTHZKSAVSR-UHFFFAOYSA-N hydrogen sulfite;tris(2-hydroxyethyl)azanium Chemical compound OS(O)=O.OCCN(CCO)CCO YMRKWTHZKSAVSR-UHFFFAOYSA-N 0.000 abstract 2
- 230000001264 neutralization Effects 0.000 abstract 2
- 239000000047 product Substances 0.000 abstract 2
- 239000001117 sulphuric acid Substances 0.000 abstract 2
- 235000011149 sulphuric acid Nutrition 0.000 abstract 2
- BIGPRXCJEDHCLP-UHFFFAOYSA-N Ammonium bisulfate Chemical class [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 abstract 1
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 abstract 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Natural products OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 235000019270 ammonium chloride Nutrition 0.000 abstract 1
- 150000003863 ammonium salts Chemical class 0.000 abstract 1
- 230000005591 charge neutralization Effects 0.000 abstract 1
- 239000003153 chemical reaction reagent Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000010790 dilution Methods 0.000 abstract 1
- WBZKQQHYRPRKNJ-UHFFFAOYSA-L disulfite Chemical compound [O-]S(=O)S([O-])(=O)=O WBZKQQHYRPRKNJ-UHFFFAOYSA-L 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000008098 formaldehyde solution Substances 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- QDHHCQZDFGDHMP-UHFFFAOYSA-N monochloramine Chemical compound ClN QDHHCQZDFGDHMP-UHFFFAOYSA-N 0.000 abstract 1
- 238000006386 neutralization reaction Methods 0.000 abstract 1
- 235000006408 oxalic acid Nutrition 0.000 abstract 1
- 150000002913 oxalic acids Chemical class 0.000 abstract 1
- 239000012262 resinous product Substances 0.000 abstract 1
- 235000011121 sodium hydroxide Nutrition 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/40—Chemically modified polycondensates
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/47—Condensation polymers of aldehydes or ketones
- D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
- D21H17/50—Acyclic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
Abstract
Resinous products for imparting wet strength to paper (see Group VIII) are prepared by condensing together urea, formaldehyde, not less than 10 per cent of the weight of the urea of an organic or inorganic bisulphite or metabisulphite, and an acidic condensation agent sufficient to bring the pH substantially below 4, the formaldehyde solution being initially boiled with the urea and/or bisulphite, or with the bisulphite and acidic condensation agent, followed by the addition of the remaining reagents while boiling. 1.5 to 3 mols., preferably 2 mols. of formaldehyde may be used per mol. of urea. Suitable condensation agents are sulphuric, sulphamic, sulphurous, hydrochloric, mono-, di-, or trichloracetic, phosphoric or pyrophosphoric or oxalic acids, alkali or ammonium bisulphates or normal ammonium salts, e.g. ammonium chloride which liberates acid with formaldehyde. The product is stabilized by neutralization by alkali or dilution with water, alcohol or formalin, and the neutralized solution may be evaporated to dryness. In examples: (1) formalin (of pH 7), urea and sodium metabisulphite are boiled together at pH 9.2 for 30 minutes, sulphuric acid added to give a pH 2.5, and the mixture boiled one hour, neutralized and cooled; (2) formalin, triethanolamine bisulphite (prepared in solution) and urea are boiled for half an hour, sulphuric acid added to give a pH 3, boiling continued a further hour and the solution neutralized and cooled; (3) SO2 (condensation agent) is passed into a solution of sodium metabisulphite to give a pH 2.5, and urea solution added to the boiling solution and boiled 15 minutes; (4) urea solution acidified with sulphurous acid is added to a boiling solution of triethanolamine in formalin with excess SO2 to give a pH below 2, over 30 minutes and boiled a further 15 minutes; (5) a solution of urea and sodium metabisulphite acidified with sulphurous acid to pH 3.5 is added over 45 minutes to a boiling solution of formalin and sulphurous acid at pH 2 and boiled a further 15 minutes; (6) a solution containing urea, triethonolamine bisulphite, and excess sulphurous acid (pH below 2) is fed into a boiling solution of acidified formalin and boiling continued; (7) SO2 gas is delivered into a boiling solution of urea and triethanolamine in formalin to give a pH 2 and boiling continued a further 30 minutes; (8) urea and neutral formalin are boiled for 30 minutes, a solution of triethanolamine bisulphite fed in, followed by a solution of sulphurous acid, and boiling continued for a further 40 minutes. In all the examples, the product was neutralised before cooling, caustic soda being used in examples 1-6, and triethanolamine in examples 7 and 8. The solutions of examples 1, 3, 5, 8 were used directly and those of examples 2, 4, 6, 7 were diluted with 3 volumes of formalin. Specifications 537,813 and 595,366 (as open to inspection under Sect. 91) are referred to.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB593111A true GB593111A (en) | 1947-10-08 |
Family
ID=1730730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1443445A Expired GB593111A (en) | 1945-06-07 | Improvements in and relating to the manufacture of resinous condensation products |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB593111A (en) |
-
1945
- 1945-06-07 GB GB1443445A patent/GB593111A/en not_active Expired
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