US3050359A - Hexamethylene tetramine activated chlorite bleach - Google Patents
Hexamethylene tetramine activated chlorite bleach Download PDFInfo
- Publication number
- US3050359A US3050359A US2340A US234060A US3050359A US 3050359 A US3050359 A US 3050359A US 2340 A US2340 A US 2340A US 234060 A US234060 A US 234060A US 3050359 A US3050359 A US 3050359A
- Authority
- US
- United States
- Prior art keywords
- chlorite
- bleaching
- hexamethylene tetramine
- bleach
- activated
- 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
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylene tetramine Natural products C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 title claims description 21
- 235000010299 hexamethylene tetramine Nutrition 0.000 title claims description 11
- 239000004312 hexamethylene tetramine Substances 0.000 title claims description 11
- 229960004011 methenamine Drugs 0.000 title claims description 11
- 239000007844 bleaching agent Substances 0.000 title description 8
- -1 Hexamethylene tetramine activated chlorite Chemical class 0.000 title description 4
- 238000004061 bleaching Methods 0.000 claims description 21
- 229910001919 chlorite Inorganic materials 0.000 claims description 18
- 229910052619 chlorite group Inorganic materials 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 11
- 229910052783 alkali metal Inorganic materials 0.000 claims description 4
- 150000001340 alkali metals Chemical class 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- QBWCMBCROVPCKQ-UHFFFAOYSA-M chlorite Chemical compound [O-]Cl=O QBWCMBCROVPCKQ-UHFFFAOYSA-M 0.000 claims 3
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical class OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 17
- 239000000243 solution Substances 0.000 description 17
- 239000004744 fabric Substances 0.000 description 12
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 6
- 229920000742 Cotton Polymers 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000004155 Chlorine dioxide Substances 0.000 description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 3
- 235000019398 chlorine dioxide Nutrition 0.000 description 3
- 150000002191 fatty alcohols Chemical class 0.000 description 3
- 229920000151 polyglycol Polymers 0.000 description 3
- 239000010695 polyglycol Substances 0.000 description 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 3
- 239000000080 wetting agent Substances 0.000 description 3
- 241000219422 Urtica Species 0.000 description 2
- 235000009108 Urtica dioica Nutrition 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 241001674048 Phthiraptera Species 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- UKLNMMHNWFDKNT-UHFFFAOYSA-M sodium chlorite Chemical compound [Na+].[O-]Cl=O UKLNMMHNWFDKNT-UHFFFAOYSA-M 0.000 description 1
- 229960002218 sodium chlorite Drugs 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/20—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen
- D06L4/22—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents
- D06L4/24—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents using chlorites or chlorine dioxide
- D06L4/26—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents using chlorites or chlorine dioxide combined with specific additives
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/20—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen
- D06L4/22—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents
- D06L4/24—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents using chlorites or chlorine dioxide
Definitions
- the present invention relates to an improved activated chlorite bleach which is especially suited for bleaching cellulosic materials.
- aqueous solutions of alkali metal and alkaline earth metal chlorites can be used for bleaching various materials, especially cotton and cotton goods.
- such solutions are activated by the addition of acids.
- Such activation has the disadvantage that the activated solutions liberate chlorine dioxide even when cold.
- the chlorine dioxide liberated is not only very unpleasant physiologically but also is very corrosive.
- Various other substances have also been suggested for the activation of chlorite bleaching solutions.
- aqueous chlorite bleaching solutions can be activated in an excellent manner with hexamethylene tetramine.
- Chlorite bleaching solutions to which hexamethylene tetramine has been added do not develop chlorine dioxide when cold and they only cause bleaching at elevated temperatures, especially at temperatures of 50 C. and over, preferably between 50 and 100 C., in the presence of the goods to be bleached, especially cellulose containing goods.
- the quantity of hexamethylene tetramine employed is 0.1 to 0.5 mol per mol of chlorite.
- the bleaching solutions contain preferably 0.5 to 50 g. of the chlorite per liter solution.
- the commonly used chlorite is the sodium chlorite.
- the chlorites of potassium, magnesium or calcium are used.
- Example 1 A desized cotton nettle cloth was impregnated with an aqueous bleaching solution containing 12 g. NaClO 1.2 g. hexamethylene tetramine and 1 g. of a wetting agent polyglycol ether of a fatty alcohol per liter and then held for three hours in a closed vessel at 78 C.
- the pH of the bleaching solution originally was 9.2 and was 4.6 after completion of the bleach.
- the grade of whiteness of the cloth increased from 60.3% to 85.6%.
- the cloth Upon completion of the bleach the cloth only contained 0.1 part by weight of unused chlorite per 100 parts by weight of cloth.
- Example 2 A desized coarse cotton nettle cloth containing seed shells was impregnated with an aqueous solution containing 16 g. NaClO 1 g. hexamethylene tetramine and l g. of a wetting agent polyglycol ether of a fatty alcohol per liter and then held for two hours at 93 C. in a closed vessel.
- the pH of the bleaching solution originally was 9.2 and was 4.6 after completion of the bleach.
- the grade of whiteness of the cloth increased from 55.5% to 84.6%.
- the cloth Upon completion of the bleach the cloth only contained 0.2 part by weight of unused chlorite per parts by weight of cloth.
- Example 3 A cotton cord fabric was impregnated with an aqueous solution containing 14.4 g. NaClO 1.4 g. hexamethylene tetramine and 1 g. of a wetting agent polyglycol ether of a fatty alcohol per liter and then held for three hours at 78 C. in a closed vessel.
- the pH of the bleaching solution originally was 9.2 and was 4.3 after completion of the bleach.
- the grade of whiteness of the back side of the fabric increased from 48.8% to 78.1%.
- the fabric Upon completion of the bleach the fabric only contained 0.12 part by weight of unused chlorite per 100 parts by weight of the fabric.
- a process for bleaching cellulosic materials comprising introducing cellulosic materials into an alkaline aqueous chlorite bleaching solution containing an activating amount of hexamethylene tetramine and bleaching said materials in such solution at 50 to 100 C.
- a process for bleaching cellulosic materials comprising introducing cellulosic materials into an alkaline aqueous chlorite bleaching solution containing a chlorite selected from the group consisting of alkali metal and alkaline earth metal chlorites, said solution containing 0.01 to 0.5 mol of hexamethylene tetramine per mol of chlorite and bleaching said materials in such solution at 50 to 100 C.
- a chlorite selected from the group consisting of alkali metal and alkaline earth metal chlorites
- a bleaching solution consisting essentially of an alkaline aqueous solution of a chlorite selected from the group consisting of alkali metal and alkaline earth metal chlorites, and 0.01 to 0.5 mol of hexamethylene tetramine per mol of chlorite.
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Detergent Compositions (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED29791A DE1085491B (de) | 1959-01-17 | 1959-01-17 | Verfahren zum Bleichen von Textilgut mittels waessriger Loesungen von Alkali- oder Erdalkalichloriten |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3050359A true US3050359A (en) | 1962-08-21 |
Family
ID=7040229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US2340A Expired - Lifetime US3050359A (en) | 1959-01-17 | 1960-01-14 | Hexamethylene tetramine activated chlorite bleach |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3050359A (en(2012)) |
| BE (1) | BE586581A (en(2012)) |
| CH (1) | CH370045A (en(2012)) |
| DE (1) | DE1085491B (en(2012)) |
| FR (1) | FR1242167A (en(2012)) |
| GB (1) | GB912062A (en(2012)) |
| NL (1) | NL109027C (en(2012)) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1719168A (en) * | 1927-01-11 | 1929-07-02 | Vanderbilt Co R T | Pickling of metals, etc. |
| US2153416A (en) * | 1936-05-22 | 1939-04-04 | Hatters Fur Exchange Inc | Treatment of animal and vegetable fibers |
| US2194956A (en) * | 1939-01-10 | 1940-03-26 | Mathieson Alkali Works Inc | Bleaching pulp |
| US2430674A (en) * | 1943-01-11 | 1947-11-11 | Mathieson Alkali Works Inc | Method of bleaching |
| US2810717A (en) * | 1955-02-07 | 1957-10-22 | Hercules Powder Co Ltd | Chlorite bleaching in the presence of a nitrogen compound employed as a corrosion inhibitor |
-
0
- NL NL109027D patent/NL109027C/xx active
- BE BE586581D patent/BE586581A/xx unknown
-
1959
- 1959-01-17 DE DED29791A patent/DE1085491B/de active Pending
- 1959-12-09 FR FR812497A patent/FR1242167A/fr not_active Expired
- 1959-12-28 CH CH8241059A patent/CH370045A/de unknown
-
1960
- 1960-01-14 GB GB1436/60A patent/GB912062A/en not_active Expired
- 1960-01-14 US US2340A patent/US3050359A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1719168A (en) * | 1927-01-11 | 1929-07-02 | Vanderbilt Co R T | Pickling of metals, etc. |
| US2153416A (en) * | 1936-05-22 | 1939-04-04 | Hatters Fur Exchange Inc | Treatment of animal and vegetable fibers |
| US2194956A (en) * | 1939-01-10 | 1940-03-26 | Mathieson Alkali Works Inc | Bleaching pulp |
| US2430674A (en) * | 1943-01-11 | 1947-11-11 | Mathieson Alkali Works Inc | Method of bleaching |
| US2810717A (en) * | 1955-02-07 | 1957-10-22 | Hercules Powder Co Ltd | Chlorite bleaching in the presence of a nitrogen compound employed as a corrosion inhibitor |
Also Published As
| Publication number | Publication date |
|---|---|
| BE586581A (en(2012)) | 1900-01-01 |
| NL109027C (en(2012)) | 1900-01-01 |
| CH8241059A4 (en(2012)) | 1963-03-15 |
| GB912062A (en) | 1962-12-05 |
| DE1085491B (de) | 1960-07-21 |
| CH370045A (de) | 1963-08-15 |
| FR1242167A (fr) | 1960-09-23 |
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