US3073666A - Alkyl phosphate activators for inorganic peroxide bleaching - Google Patents
Alkyl phosphate activators for inorganic peroxide bleaching Download PDFInfo
- Publication number
- US3073666A US3073666A US112504A US11250461A US3073666A US 3073666 A US3073666 A US 3073666A US 112504 A US112504 A US 112504A US 11250461 A US11250461 A US 11250461A US 3073666 A US3073666 A US 3073666A
- Authority
- US
- United States
- Prior art keywords
- alkyl phosphate
- activators
- bleaching
- inorganic peroxide
- peroxide 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 - Lifetime
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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
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/12—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen combined with specific additives
Definitions
- the present invention relates to an improved process for the treatment of natural and synthetic textile fibers, either as such or in the form of yarns, woven and knitted fabrics or articles produced therefrom, with aqueous baths containing peroxidic compounds and more particularly with such baths containing a novel activating agent.
- peroxidic compounds such as hydrogen peroxide, sodium peroxide, sodium perborate, sodium percarbonate, sodium perphosphate and the like, can be used in washing and bleaching baths for textile fibers of all types.
- peroxidic compounds such as hydrogen peroxide, sodium peroxide, sodium perborate, sodium percarbonate, sodium perphosphate and the like.
- temperatures almost up to boiling are used for such washing or bleaching.
- Such high temperatures for the washing and bleaching baths require considerable heat energy and furthermore are not suited for the ordinary washing machine.
- activators which will permit the washing and bleaching operations to be carried out at lower temperatures while still achieving the desired whitening effect and good spot removal.
- activators for example, are: formamide, amides of unsaturated lower carboxylic acids, organic nitriles, anhydrides of diand polybasic carboxylic acids, as well as anhydrides of unsaturated carboxylic acids.
- pyrophosphoric acid esters of fatty alcohols produce complex compounds with hydrogen peroxide which also can be used as components of bleaching and washing agents.
- Such complex compounds possess especially high stability and release the active oxygen at room temperatures much more slowly than, for example, sodium perborate.
- they also act as stabilizers for sodium peroxide, sodium perborate and other inorganic per salts.
- acylated esters for example, have the following wherein R, for example, can be the allcyl groups, such as ethyl, derived from the phosphoric acid ester and the acetylated alkyl is the acyl group, such as an acetyl group, derived from the acylating agent.
- R for example, can be the allcyl groups, such as ethyl, derived from the phosphoric acid ester and the acetylated alkyl is the acyl group, such as an acetyl group, derived from the acylating agent.
- the acylated esters are produced by known methods and exhibit a very good activating action, sufiicient stability and a pleasant odor.
- the bleaching and washing baths according to the invention which contain peroxidic textile bleaching agents and the activators according to the invention can in addition contain known stabilizers, buffering agents, wetting agents, detergents, protective agents for fibers and optical brighteners.
- the best action according to the invention is obtained in neutral, weakly acidic and Weakly alkaline baths or, in other words, at a pH between about 3 and 11.
- the temperature of the baths preferably is between 60 and C.
- the active oxygen content of such baths preferably is between 0.05 g. and 20 g. per liter.
- :It is important for the action of the activators that they are dissolved directly together with the per compounds or shortly before or after such per compounds in order that coaction is ensured.
- Example 7 A rayon stable fiber woven fabric was boiled in red wine and its white content measured and found to be 31%. The measurement of such white content was with the Zeiss-Elrepho-whiteness degree measurer against white standard 565 and with filter 6. I
Description
smarts Patented Jan. 15, 1953 3,073,666 ALKYL PHQSPHATE ACTIVATORS FOR INORGANIC PERQXIDE BLEACHENG tar! Ditlunar and Elfriede Naujohs, Frankfurt am Main, Germany, assignors to Deutsche Goldund Silber- Scheideanstalt vormals Roessler, Frankfurt am Main,
Germany No Drawing. Filed May 25, 1961, Ser. No. 112,504 Claims priority, application Germany May 27, 1960 Claims. ((Il. 8-41) The present invention relates to an improved process for the treatment of natural and synthetic textile fibers, either as such or in the form of yarns, woven and knitted fabrics or articles produced therefrom, with aqueous baths containing peroxidic compounds and more particularly with such baths containing a novel activating agent.
It is known that peroxidic compounds, such as hydrogen peroxide, sodium peroxide, sodium perborate, sodium percarbonate, sodium perphosphate and the like, can be used in washing and bleaching baths for textile fibers of all types. However, in some instances certain difficulties occur in their use as relatively high temperatures must be employed if the desired bleaching action is to be achieved. As a rule, temperatures almost up to boiling are used for such washing or bleaching. Such high temperatures for the washing and bleaching baths require considerable heat energy and furthermore are not suited for the ordinary washing machine.
For these reasons various so-called activators have been proposed which will permit the washing and bleaching operations to be carried out at lower temperatures while still achieving the desired whitening effect and good spot removal. Examples of such activators, for example, are: formamide, amides of unsaturated lower carboxylic acids, organic nitriles, anhydrides of diand polybasic carboxylic acids, as well as anhydrides of unsaturated carboxylic acids.
It is furthermore known that pyrophosphoric acid esters of fatty alcohols produce complex compounds with hydrogen peroxide which also can be used as components of bleaching and washing agents. Such complex compounds possess especially high stability and release the active oxygen at room temperatures much more slowly than, for example, sodium perborate. In addition, they also act as stabilizers for sodium peroxide, sodium perborate and other inorganic per salts.
According to the invention it was unexpectedly found that the reaction products of acylating agents, such as acetyl chloride with esters of phosphoric acid, are very excellent activators for per compounds.
Such acylated esters, for example, have the following wherein R, for example, can be the allcyl groups, such as ethyl, derived from the phosphoric acid ester and the acetylated alkyl is the acyl group, such as an acetyl group, derived from the acylating agent. The acylated esters are produced by known methods and exhibit a very good activating action, sufiicient stability and a pleasant odor.
It was found that relatively small quantities of the activators according to the invention provide a good activation in aqueous peroxidic baths. For example, quantities between 0.1 to 1.0 mol per mol of active oxygen calculated as H 0 are sufiicient.
The bleaching and washing baths according to the invention which contain peroxidic textile bleaching agents and the activators according to the invention can in addition contain known stabilizers, buffering agents, wetting agents, detergents, protective agents for fibers and optical brighteners. I
The best action according to the invention is obtained in neutral, weakly acidic and Weakly alkaline baths or, in other words, at a pH between about 3 and 11. The temperature of the baths preferably is between 60 and C. The active oxygen content of such baths preferably is between 0.05 g. and 20 g. per liter.
:It is important for the action of the activators that they are dissolved directly together with the per compounds or shortly before or after such per compounds in order that coaction is ensured.
The following example will serve to illustrate the pres- I out invention.
Example 7 A rayon stable fiber woven fabric was boiled in red wine and its white content measured and found to be 31%. The measurement of such white content was with the Zeiss-Elrepho-whiteness degree measurer against white standard 565 and with filter 6. I
This stained fabric was washed for 45 minutes at 60 C. in a quiescent bath of the following composition per liter:
' G. Lauryl sulfate 1.250 Sodium pyrophosphate 0.625 Sodium tripolyphosphate 0.625 Dry water glass 0.350 Sodium perborate 0.600 Diethyl monoacetyl phosphate 0.980
The pH of such bath was 7.5 to 8. was rinsed and dried and then measured as above. tent was 69.4%.
The same stained fabric when treated under the same conditions, except for the omission of the diethyl monoacetyl phosphate, only had a white content of 48.0%.
We claim:
1. In a process for the treatment of fibers with an aqueous bath containing an inorganic peroxidic bleaching agent, the step which comprises incorporating a suflicient amount of an acetylated alkyl phosphate ester in such bath to activate said bleaching agent.
2. The process of claim 1 in which 0.1 to 1.0 mol of phosphate ester are incorporated per mol of active peroxidic oxygen.
3. The process of claim 2 in which said acetylated alkyl phosphate ester is diethyl monoacetyl phosphate.
4. The process of claim 2 in which said acetylated alkyl phosphate ester is monoethyl diacetyl phosphate.
5. The process of claim 2 in which the temperature of the bath is between 60 and 80 C.
The treated fabric again its white content After such treatment its white con- No references cited.
Claims (1)
1. IN A PROCESS FOR THE TREATMENT OF FIBERS WITH AN AQUEOUS BATH CONTAINING AN INORGANIC PEROXIDIC BLEACHING AGENT THE STEP WHICH COMPRISES INCORPORATING A SUFFICIENT AMOUNT OF AN ACETYLATED ALKYL PHOSPHATE ESTER IN SUCH BATH TO ACTIVATE SAID BLEACHING AGENT.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED33445A DE1107632B (en) | 1960-05-27 | 1960-05-27 | Method for treating textiles |
Publications (1)
Publication Number | Publication Date |
---|---|
US3073666A true US3073666A (en) | 1963-01-15 |
Family
ID=7041748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US112504A Expired - Lifetime US3073666A (en) | 1960-05-27 | 1961-05-25 | Alkyl phosphate activators for inorganic peroxide bleaching |
Country Status (4)
Country | Link |
---|---|
US (1) | US3073666A (en) |
DE (1) | DE1107632B (en) |
GB (1) | GB925725A (en) |
NL (2) | NL123976C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3379493A (en) * | 1963-07-06 | 1968-04-23 | Degussa | Activated inorganic bleaches |
US4145305A (en) * | 1976-06-04 | 1979-03-20 | Produits Chimiques Ugine Kuhlmann | Phosphorus activators for percompounds |
US4164394A (en) * | 1978-10-10 | 1979-08-14 | Fmc Corporation | Peroxygen bleaching and compositions therefor |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2831899A1 (en) * | 1978-07-20 | 1980-02-07 | Basf Ag | USE OF ACYLATED PHOSPHORIC OR SULFURIC ACID AS A CLEAR BLEACH ACTIVATOR FOR DETERGENT-RELEASING COMPONENTS CONTAINING ACTIVE OXYGEN |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE403252A (en) * | 1933-07-28 |
-
0
- NL NL264849D patent/NL264849A/xx unknown
- NL NL123976D patent/NL123976C/xx active
-
1960
- 1960-05-27 DE DED33445A patent/DE1107632B/en active Pending
-
1961
- 1961-05-23 GB GB18646/61A patent/GB925725A/en not_active Expired
- 1961-05-25 US US112504A patent/US3073666A/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
None * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3379493A (en) * | 1963-07-06 | 1968-04-23 | Degussa | Activated inorganic bleaches |
US4145305A (en) * | 1976-06-04 | 1979-03-20 | Produits Chimiques Ugine Kuhlmann | Phosphorus activators for percompounds |
US4164394A (en) * | 1978-10-10 | 1979-08-14 | Fmc Corporation | Peroxygen bleaching and compositions therefor |
Also Published As
Publication number | Publication date |
---|---|
NL264849A (en) | |
NL123976C (en) | |
GB925725A (en) | 1963-05-08 |
DE1107632B (en) | 1961-05-31 |
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