US2335576A - Treatment of casein fibers - Google Patents
Treatment of casein fibers Download PDFInfo
- Publication number
- US2335576A US2335576A US270203A US27020339A US2335576A US 2335576 A US2335576 A US 2335576A US 270203 A US270203 A US 270203A US 27020339 A US27020339 A US 27020339A US 2335576 A US2335576 A US 2335576A
- Authority
- US
- United States
- Prior art keywords
- treatment
- fibers
- casein
- washing
- ammonia
- 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 - Lifetime
Links
- 239000000835 fiber Substances 0.000 title description 19
- 239000005018 casein Substances 0.000 title description 9
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 title description 9
- 235000021240 caseins Nutrition 0.000 title description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- 238000005406 washing Methods 0.000 description 9
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 238000005188 flotation Methods 0.000 description 6
- 235000011121 sodium hydroxide Nutrition 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000003513 alkali Substances 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 235000010755 mineral Nutrition 0.000 description 3
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- CEQFOVLGLXCDCX-WUKNDPDISA-N methyl red Chemical compound C1=CC(N(C)C)=CC=C1\N=N\C1=CC=CC=C1C(O)=O CEQFOVLGLXCDCX-WUKNDPDISA-N 0.000 description 1
- 150000007530 organic bases Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F4/00—Monocomponent artificial filaments or the like of proteins; Manufacture thereof
Definitions
- Casein fibers even when they have been hardened with an aldehyde have a certain tendency to stick together and felt owing to their great softness; this tendency creates difflculty in the wet treatment processes which come between the hardening operation and the drying.
- the washing liquor used in practice should have a hydrogen ion concentration (pH) in presence of'the casein fiber of between 4.5 and 11.5.
- the fibers adhere strongly to one another or indeed are in part strongly felted together. After the flotation process which may occur in vats or flotation troughs there follows a short washing with water and the usual soaping. After the washing the fibers may be subjected to a short acid treatment with dilute acetic acid or lactic acid.
- Example 1.-5-'7 kilos of casein fiber are separated by centrifuging from the main quantity of the hardening bath, then washed with about 200 liters of permutite-water, again centrifuged and finally floated with 200 liters of water to which 700-800 cc. of ammonia.- of 22 per cent strength have been added.
- the proportion of ammonia is determined by the residual acidity of the washed fiber.
- the pH-value is 6.5-11.0.
- the liquor should contain as far as possible not more than 0.05-0.23 per cent of ammonia. 0.05-,0.1 per cent of formaldehyde is added, to avoid any damage to the fibers.
- the floated fiber is then washed in about 100 liters of permutitewater and treated as usual with dilute acetic acid. soaped and dried.
- Example 3.-5.'7 kilos of casein fiber are washed as described in Example 1 and floated with 200 liters of dilute caustic soda lye.
- the additionpf sodium hydroxide amounts to about 250 cc. of caustic soda lye of 14.5 per cent strength.
- the further treatment resembles that described in Example 1.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Paper (AREA)
- Detergent Compositions (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2335576X | 1938-05-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2335576A true US2335576A (en) | 1943-11-30 |
Family
ID=7994941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US270203A Expired - Lifetime US2335576A (en) | 1938-05-05 | 1939-04-26 | Treatment of casein fibers |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2335576A (enrdf_load_stackoverflow) |
| BE (1) | BE433308A (enrdf_load_stackoverflow) |
| FR (1) | FR851753A (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2506252A (en) * | 1944-09-06 | 1950-05-02 | Ici Ltd | Process of increasing the strength of insolubilized artificial protein filaments |
-
0
- BE BE433308D patent/BE433308A/xx unknown
-
1939
- 1939-03-17 FR FR851753D patent/FR851753A/fr not_active Expired
- 1939-04-26 US US270203A patent/US2335576A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2506252A (en) * | 1944-09-06 | 1950-05-02 | Ici Ltd | Process of increasing the strength of insolubilized artificial protein filaments |
Also Published As
| Publication number | Publication date |
|---|---|
| FR851753A (fr) | 1940-01-15 |
| BE433308A (enrdf_load_stackoverflow) |
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