GB898305A - Improvements in bleaching compositions - Google Patents
Improvements in bleaching compositionsInfo
- Publication number
- GB898305A GB898305A GB18414/59A GB1841459A GB898305A GB 898305 A GB898305 A GB 898305A GB 18414/59 A GB18414/59 A GB 18414/59A GB 1841459 A GB1841459 A GB 1841459A GB 898305 A GB898305 A GB 898305A
- Authority
- GB
- United Kingdom
- Prior art keywords
- weight
- polyamine
- nitrate
- chlorite
- bleaching
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detergent Compositions (AREA)
Abstract
At least one polyamine of the formula NH2(CH2CHR.NH)nH in which R is hydrogen or a methyl group and n is 1-4 is added to an aqueous bleaching bath containing a water-soluble metal chlorite, and having a pH of 2-7, in an amount sufficient to prevent the evolution of chlorine dioxide from the bath but insufficient to destroy the bleaching power of the chlorite. Alkali or alkaline-earth metal chlorites, e.g. sodium, lithium, potassium and calcium chlorites, are preferably used and the concentration, in the case of sodium chlorite is preferably 0.1 to 20 grams per litre. The polyamines, which may be in the form of their hydrochloride or phosphate salts, may be used at concentrations within the range of 10 to 500 parts per million by weight in a bleaching bath containing about 1,000 to 2,000 parts per million by weight of sodium chlorite or p equivalent amounts of other water-soluble metal chlorites. The bath may also contain buffers, e.g. Na2HPO4, NaH2PO4, polyphosphates, NH4HF2, sodium acetate and acetic acid, to maintain a constant pH, wetting agents, e.g. the salts of acylalkyl taurides, up to 0.50 moles of ammonium nitrate or alkali or alkaline-earth metal nitrate per mole of chlorite, to reduce corrosion of stainless apparatus, and 5 to 50 parts per million by weight, based on the solution of a chelating agent, e.g. ethylene diamine tetra-acetic acid, hydroxyethyl-ethylene diamine triacetic acid, imino diacetic acid, nitrilo-triacetic acid and symmetrical ethylene diamine diacetic acid and their salts, and citric, maleic, lactic and tartaric acids and salts of citric and tartaric acids, to minimize the action of iron and other metal ions, e.g. nickel and cobalt, in engendering the formation of chlorine dioxide. The polyamine may be added to the bleaching bath as an aqueous concentrate containing the polyamine and an alkali or alkalineearth metal nitrate, a suitable concentrate having the composition: nitrate 20%-32% by weight, polyamine 5%-12% by weight and chelating agent 3%-10% by weight, the balance being water. Alternatively, the polyamine may be added to the bleaching bath as a solid composition containing the polyamine, preferably in the form of a hydrochloride or phosphate, an alkali-metal nitrate and a buffering agent, a suitable solid composition being: nitrate 30%-55% by weight, buffer 25%-50% by weight, polyamine (or salt) 8%-12% by weight and chelating agent 3%-20% by weight. The bleaching of cotton, polyacrylonitrile and polyethylene terephthalate fibres is described. U.S.A. Specifications 2,358,866 and 2,526,839 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US741216A US2988514A (en) | 1958-06-11 | 1958-06-11 | Bleaching composition and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB898305A true GB898305A (en) | 1962-06-06 |
Family
ID=24979824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18414/59A Expired GB898305A (en) | 1958-06-11 | 1959-05-29 | Improvements in bleaching compositions |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2988514A (en) |
| BE (1) | BE578918A (en) |
| DE (1) | DE1209095B (en) |
| FR (1) | FR1228602A (en) |
| GB (1) | GB898305A (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3539445A (en) * | 1967-08-04 | 1970-11-10 | Ray I Thomas | Reduction of iron content in bleaching fibrous cellulose |
| US4084747A (en) * | 1976-03-26 | 1978-04-18 | Howard Alliger | Germ killing composition and method |
| USRE31779E (en) * | 1976-03-26 | 1984-12-25 | Alcide Corporation | Germ-killing composition and method |
| US4238282A (en) * | 1979-07-23 | 1980-12-09 | Nalco Chemical Company | Chemical treatments in bleaching stages which increase pulp brightness |
| US4690772A (en) * | 1985-06-03 | 1987-09-01 | National Medical Care | Sterilant compositions |
| US4740212A (en) * | 1985-11-25 | 1988-04-26 | Quantum Technologies, Inc. | Process and composition for bleaching cellulosic material with hypochlorous acid |
| US4963287A (en) * | 1987-05-26 | 1990-10-16 | The Drackett Company | Aqueous alkali metal halogenite compositions |
| US4880556A (en) * | 1987-05-26 | 1989-11-14 | The Drackett Company | Aqueous alkali metal halogenite compositions containing a colorant |
| US4898681A (en) * | 1988-08-31 | 1990-02-06 | Burton Charles D | Hypochlorite distinfectant stabilized with calcium chelant |
| EP1725271B1 (en) | 2004-03-05 | 2011-05-11 | Gen-Probe Incorporated | Method for deactivating nucleic acids |
| US20050276867A1 (en) * | 2004-06-09 | 2005-12-15 | Allergan, Inc. | Stabilized compositions comprising a therapeutically active agent and an oxidizing preservative |
| CN100439573C (en) * | 2005-11-25 | 2008-12-03 | 中国科学院化学研究所 | Stabilizer for use in sodium chlorite degumming and bleaching of flax and its preparation method and application |
| CN101631742B (en) | 2007-03-15 | 2012-05-23 | 大幸药品株式会社 | Stabilized compositions for chlorine dioxide |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA507997A (en) * | 1954-12-07 | H. Thompson William | Inhibition of corrosion in steam systems | |
| US1748494A (en) * | 1929-05-02 | 1930-02-25 | Vanderbilt Co R T | Pickling and cleaning of metals |
| GB549240A (en) * | 1941-05-10 | 1942-11-12 | William Baird | Pulverulent cleansing preparations |
| FR912469A (en) * | 1942-04-08 | 1946-08-09 | Rhodiaceta | Process for bleaching products based on superpolyamides |
| US2499987A (en) * | 1945-12-18 | 1950-03-07 | Harris Res Lab | Process for imparting shrink resistance to wool |
| FR959544A (en) * | 1947-02-01 | 1950-03-31 | ||
| NL74491C (en) * | 1949-12-27 | |||
| US2740689A (en) * | 1952-04-26 | 1956-04-03 | Fmc Corp | Peroxide bleaching with polyphosphates and alkali salt of edtaa |
| US2836566A (en) * | 1954-01-27 | 1958-05-27 | Detrex Chem Ind | Cleaning composition and method |
| US2739882A (en) * | 1954-02-25 | 1956-03-27 | Raytheon Mfg Co | Surface treatment of germanium |
| 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 |
| US2850461A (en) * | 1955-12-16 | 1958-09-02 | Universal Oil Prod Co | Solvent compositions containing anti-corrosion agents |
-
0
- BE BE578918D patent/BE578918A/xx unknown
-
1958
- 1958-06-11 US US741216A patent/US2988514A/en not_active Expired - Lifetime
-
1959
- 1959-05-29 GB GB18414/59A patent/GB898305A/en not_active Expired
- 1959-06-09 FR FR796982A patent/FR1228602A/en not_active Expired
- 1959-06-10 DE DES63399A patent/DE1209095B/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR1228602A (en) | 1960-08-31 |
| US2988514A (en) | 1961-06-13 |
| BE578918A (en) | |
| DE1209095B (en) | 1966-01-20 |
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