Composition and use thereof

Abstract

A biodegradable composition containing no nitrogen or phosphorus, and the use thereof. The composition comprises the following components: a polymer containing a repeating unit derived from α-hydroxyacrylic acid, or a salt thereof (e.g., a sodium salt, a potassium salt); a dispersant containing a repeating unit derived from ethylenically unsaturated carboxylic acid, or a salt thereof (e.g., a sodium salt, a potassium salt); and an optional base and an optional chelating agent. The composition contains no phosphorus, nitrogen, or other components that are likely to result in the eutrophication of a water body, and various components therein can all be biodegraded, and are friendly to the environment. Moreover, the composition does not contain any silicate component, thereby avoiding reduction in the production efficiency due to the problem of scaling. In addition, the composition has an effective stabilizing effect on hydrogen peroxide for bleached pulp and fabrics containing cellulose.

Description

Compositions and uses thereof TECHNICAL FIELD

[0001] The present invention relates to the field of bleaching stabilizers, and in particular to biodegradable compositions free of nitrogen and phosphorus and uses thereof. BACKGROUND

[0002] Hydrogen Peroxide (H2O2), commonly known as double oxygen water, is a common and relatively mild oxidizing bleaching agent. It is widely used in bleaching pulp and natural fiber fabrics, etc. due to its environmental friendliness and its non-harmfulness to human body and environment. However, the fibers of these materials usually contain transition metal ions, which will additionally increase the consumption of hydrogen peroxide. Therefore, when bleaching the above-mentioned materials with hydrogen peroxide, a bleaching stabilizer is usually added to prevent the metal ions from catalyzing the decomposition of hydrogen peroxide.

[0003] At present, there are three generations of bleaching stabilizer products on the market.

[0004] The first generation product is sodium silicate (Na2SiO3). It is inexpensive, but sodium silicate belongs to silicate, which has a fouling problem. It is easy to precipitate into the inside of the fiber, causing the fabric to feel rough, and also to precipitate in the inside of the machine and pipeline, forming a silicon scale that is difficult to wash out.

[0005] The second generation product is a phosphorus-based bleaching stabilizer. However, it can cause water eutrophication on the one hand, and calcium phosphate (Ca3(PO4)2) fouling problem on the other hand when it is used at a high dose.

[0006] The third generation product is a phosphorus-free bleaching stabilizer. Such products do not contain phosphorus or have a low phosphorus content, which will not cause water eutrophication due to excessive phosphorus discharge. At the same time, since they do not contain silicate, they will not cause fouling problems. However, there are some amino carboxylic acid chelating agents (such as EDTA and DTPA) in them, which are difficult to be biodegraded, and due to their nitrogen content, excessive nitrogen discharge will also cause water eutrophication problems. In addition, they are relatively expensive and are not cost-effective under harsh conditions.

[0007] In addition, the stabilizing effect of existing products on hydrogen peroxide needs to be further improved.

[0008] Therefore, there is an urgent need in the art for an environmentally friendly, biodegradable, and good stabilizing effect on hydrogen peroxide composition. SUMMARY

[0009] The present invention provides a composition. In one embodiment, the composition of the present invention can be used as a hydrogen peroxide stabilizer. In one embodiment, the composition of the present invention is free of phosphorous or nitrogen, is environmentally friendly, and is biodegradable, and has a good stabilizing effect on hydrogen peroxide. The present invention also provides the use of the composition for stabilizing hydrogen peroxide used for bleaching pulp and cellulose-containing fabrics.

[0010] In one aspect, the present invention provides a composition comprising: a polymer, a dispersant, optionally a base, and optionally a chelating agent.

[0011] In one embodiment, the polymer is a polymer containing repeating units derived from alpha hydroxy acrylic acid or a salt thereof (e.g., sodium salt, potassium salt). In one embodiment, the polymer is a homopolymer, a copolymer, or a combination thereof.

[0012] In one embodiment, the dispersant is a dispersant containing repeating units derived from ethylenically unsaturated carboxylic acid or a salt thereof (e.g., sodium salt, potassium salt). In one embodiment, the dispersant is a homopolymer, a copolymer, or a combination thereof.

[0013] In one embodiment, the polymer containing repeating units derived from alpha hydroxy acrylic acid comprises the following repeating unit (e.g., a polymer having the following structural formula):

[0014] wherein R 1 , and R 2 are each, at each occurrence thereof, independently selected from H, unsubstituted C1-C6 alkyl, substituted C1-C6 alkyl, unsubstituted C2-C6 alkenyl, substituted C2-C6 alkenyl, unsubstituted C2-C6 alkynyl, or substituted C2-C6 alkynyl, wherein the substituents are selected from carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, amino, mono- or di-C1-C6 alkylamino, nitro, thiol, C1-C6 haloalkyl, C2-C6 alkenyl, or C2-C6 alkynyl, wherein the substituents are preferably carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, thiol, C2-C6 alkenyl, or C2-C6 alkynyl, and the substituents are most preferably carboxyl or hydroxyl,

[0015] M, at each occurrence thereof, is independently selected from H, an alkali metal ion (e.g., Na + , K + ), or an ammonium ion (NH4 + ), preferably H or an alkali metal ion (e.g., Na + , K + ).

[0016] In an embodiment, the polymer containing repeating units derived from an alpha hydroxy acrylic acid comprises the following repeating unit (e.g., a polymer having the following structural formula):

[0017] M 1 , at each occurrence thereof, is independently selected from H, an alkali metal ion (e.g., Na + , K + ), or an ammonium ion (NH4 + ), preferably H or an alkali metal ion (e.g., Na + , K + ).

[0018] In an embodiment, the polymer containing repeating units derived from an alpha hydroxy acrylic acid comprises the following repeating unit (e.g., a polymer having the following structural formula):

[0019] In an embodiment, the polymer containing repeating units derived from an alpha hydroxy acrylic acid comprises the following repeating unit (e.g., a polymer having the following structural formula):

[0020] M 2 , and M 3 , at each occurrence thereof, is independently selected from H, an alkali metal ion (e.g., Na + , K + ), or an ammonium ion (NH4 + ), preferably H or an alkali metal ion (e.g., Na + , K + ).

[0021] In an embodiment, the polymer containing repeating units derived from an alpha hydroxy acrylic acid comprises poly alpha hydroxy acrylic acid and / or a salt thereof (e.g., a sodium salt, a potassium salt); most preferably, the polymer containing repeating units derived from an alpha hydroxy acrylic acid comprises poly alpha hydroxy acrylic acid salt (e.g., a sodium salt, a potassium salt).

[0022] In an embodiment, the dispersant containing repeating units derived from an ethylenically unsaturated carboxylic acid comprises the following repeating unit (e.g., a dispersant having the following structural formula):

[0023] wherein R 3 , R 4 , and R 5each occurrence thereof is independently selected from H, unsubstituted C1-C6alkyl, substituted C1-C6alkyl, unsubstituted C2-C6alkenyl, substituted C2-C6alkenyl, unsubstituted C2-C6alkynyl, or substituted C2-C6alkynyl, wherein the substituents are selected from carboxyl, hydroxyl, C3-C6cycloalkyl, C1-C6alkoxy, amino, mono- or di-C1-C6alkylamino, nitro, thiol, C1-C6haloalkyl, C2-C6alkenyl, or C2-C6alkynyl, wherein the substituents are preferably carboxyl, hydroxyl, C3-C6cycloalkyl, C1-C6alkoxy, thiol, C2-C6alkenyl, or C2-C6alkynyl, and the substituents are most preferably carboxyl or hydroxyl,

[0024] M 4 each occurrence thereof is independently selected from H, an alkali metal ion (e.g., Na + , K + ), or an ammonium ion (NH4 + ), preferably H or an alkali metal ion (e.g., Na + , K + ).

[0025] In one embodiment, the dispersant containing repeating units derived from an ethylenically unsaturated carboxylic acid comprises the following repeating unit (e.g., a dispersant having the following structural formula):

[0026] wherein M 5 each occurrence thereof is independently selected from H, an alkali metal ion (e.g., Na + , K + ), or an ammonium ion (NH4 + ), preferably H or an alkali metal ion (e.g., Na + , K + ).

[0027] In one embodiment, the dispersant containing repeating units derived from an ethylenically unsaturated carboxylic acid comprises the following repeating unit (e.g., a dispersant having the following structural formula):

[0028] wherein M 6 and M 7 each occurrence thereof is independently selected from H, an alkali metal ion (e.g., Na + , K + ), or an ammonium ion (NH4 + ), preferably H or an alkali metal ion (e.g., Na + , K + ).

[0029] In one embodiment, the dispersant containing repeating units derived from an ethylenically unsaturated carboxylic acid comprises the following repeating unit (e.g., a dispersant having the following structural formula):

[0030] wherein R 6 , and R 7 are each, at each occurrence, independently selected from H, unsubstituted C1-C6 alkyl, substituted C1-C6 alkyl, unsubstituted C2-C6 alkenyl, substituted C2-C6 alkenyl, unsubstituted C2-C6 alkynyl, or substituted C2-C6 alkynyl, wherein the substituents are selected from carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, amino, mono- or di-C1-C6 alkylamino, nitro, thiol, C1-C6 haloalkyl, C2-C6 alkenyl, or C2-C6 alkynyl, with the substituents preferably carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, thiol, C2-C6 alkenyl, or C2-C6 alkynyl, and the substituents most preferably carboxyl or hydroxyl.

[0031] In one embodiment, the dispersant containing repeating units derived from an ethylenically unsaturated carboxylic acid comprises the following repeating unit (e.g., a dispersant having the following structural formula):

[0032] wherein R 8 , R 9 are each, at each occurrence, independently selected from H, unsubstituted C1-C6 alkyl, substituted C1-C6 alkyl, unsubstituted C2-C6 alkenyl, substituted C2-C6 alkenyl, unsubstituted C2-C6 alkynyl, or substituted C2-C6 alkynyl, wherein the substituents are selected from carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, amino, mono- or di-C1-C6 alkylamino, nitro, thiol, C1-C6 haloalkyl, C2-C6 alkenyl, or C2-C6 alkynyl, with the substituents preferably carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, thiol, C2-C6 alkenyl, or C2-C6 alkynyl, and the substituents most preferably carboxyl or hydroxyl,

[0033] M 8 and M 9 are each, at each occurrence, independently selected from H, an alkali metal ion (e.g., Na + , K + ), or an ammonium ion (NH4 + ), with H or an alkali metal ion (e.g., Na + , K + ) being preferred.

[0034] In one embodiment, the dispersant derived from a repeating unit of an ethylenically unsaturated carboxylic acid has the following structural formula:

[0035] wherein R 3 , R 4 , and R 5 are each, at each occurrence, independently selected from H, unsubstituted C1-C6 alkyl, substituted C1-C6 alkyl, unsubstituted C2-C6 alkenyl, substituted C2-C6 alkenyl, unsubstituted C2-C6 alkynyl, or substituted C2-C6 alkynyl, wherein the substituents are selected from carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, amino, mono- or di-C1-C6 alkylamino, nitro, thiol, C1-C6 haloalkyl, C2-C6 alkenyl, or C2-C6 alkynyl, wherein the substituents are preferably carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, thiol, C2-C6 alkenyl, or C2-C6 alkynyl, and the substituents are most preferably carboxyl or hydroxyl,

[0036] M 4 is, at each occurrence, independently selected from H, an alkali metal ion (e.g., Na + , K + ), or an ammonium ion (NH4 + ), preferably H or an alkali metal ion (e.g., Na + , K + ),

[0037] M 6 and M 7 are each, at each occurrence, independently selected from H, an alkali metal ion (e.g., Na + , K + ), or an ammonium ion (NH4 + ), preferably H or an alkali metal ion (e.g., Na + , K + ,

[0038] The ratio of a and b suggests a molar ratio, which is 1 : (0.1-10), e.g., 1 :0.1, 1 :0.2, 1 :0.3, 1 :0.4, 1 :0.5, 1 :0.6, 1 :0.7, 1 :0.8, 1 :0.9, 1 :1, 1 :2, 1 :3, 1 :4, 1 :5, 1 :6, 1 :7, 1 :8, 1 :9, 1 :10, or a sub-range consisting of any values in these ranges, preferably 1 : (0.5-2),

[0039] represents a direct or indirect connection.

[0040] In one embodiment, the dispersant derived from repeating units of an ethylenically unsaturated carboxylic acid has the following structural formula:

[0041] M 5 , at each occurrence, is independently selected from H, an alkali metal ion (e.g., Na + , K + ), or an ammonium ion (NH4 + ), preferably H or an alkali metal ion (e.g., Na + , K + ),

[0042] M 6 , and M 7 , at each occurrence, is independently selected from H, an alkali metal ion (e.g., Na + , K + ), or an ammonium ion (NH4 + ), preferably H or an alkali metal ion (e.g., Na + , K + ),

[0043] The ratio of c and d indicates the molar ratio, which is 1 : (0.1-10), for example, 1 :0.1, 1 :0.2, 1 :0.3, 1 :0.4, 1 :0.5, 1 :0.6, 1 :0.7, 1 :0.8, 1 :0.9, 1 :1, 1 :2, 1 :3, 1 :4, 1 :5, 1 :6, 1 :7, 1 :8, 1 :9, 1 :10, or a sub-range consisting of any values in these ranges, preferably 1 :(0.5-2),

[0044] represents a direct or indirect connection.

[0045] In one embodiment, the dispersant derived from repeating units of an ethylenically unsaturated carboxylic acid has the following structural formula:

[0046] wherein R 3 , R 4 , and R 5Each of the following, in each occurrence, is independently selected from H, unsubstituted C1-C6 alkyl, substituted C1-C6 alkyl, unsubstituted C2-C6 alkenyl, substituted C2-C6 alkenyl, unsubstituted C2-C6 ynyl, or substituted C2-C6 ynyl, wherein the substituent is selected from carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, amino, mono- or di-C1-C6 alkylamino, nitro, thiol, C1-C6 haloalkyl, C2-C6 alkenyl, or C2-C6 ynyl, wherein the substituent is preferably carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, thiol, C2-C6 alkenyl, or C2-C6 ynyl, and the most preferred substituent is carboxyl or hydroxyl.

[0047] M 4 Each time it appears, it is independently selected from H, alkali metal ions (e.g., Na). + K + ), or ammonium ions (NH4+) 4+ H or alkali metal ions (e.g., Na) are preferred. + K + ),

[0048] R 8 R 9 Each of the following, in each occurrence, is independently selected from H, unsubstituted C1-C6 alkyl, substituted C1-C6 alkyl, unsubstituted C2-C6 alkenyl, substituted C2-C6 alkenyl, unsubstituted C2-C6 ynyl, or substituted C2-C6 ynyl, wherein the substituent is selected from carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, amino, mono- or di-C1-C6 alkylamino, nitro, thiol, C1-C6 haloalkyl, C2-C6 alkenyl, or C2-C6 ynyl, wherein the substituent is preferably carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, thiol, C2-C6 alkenyl, or C2-C6 ynyl, and the most preferred substituent is carboxyl or hydroxyl.

[0049] M 8 and M 9 Each of these, in each occurrence, is independently selected from H, alkali metal ions (e.g., Na+). + K + ), or ammonium ions (NH4+) 4+ H or alkali metal ions (e.g., Na) are preferred. + K + ),

[0050] The ratio of e and f indicates the molar ratio, which is 1 : (0.1-10), for example, 1 :0.1, 1 :0.2, 1 :0.3, 1 :0.4, 1 :0.5, 1 :0.6, 1 :0.7, 1 :0.8, 1 :0.9, 1 :1, 1 :2, 1 :3, 1 :4, 1 :5, 1 :6, 1 :7, 1 :8, 1 :9, 1 :10, or a sub-range consisting of any values within these ranges, preferably 1 : (0.5-2);

[0051] represents a direct or indirect connection.

[0052] In one embodiment, the dispersant derived from ethylenically unsaturated carboxylic acid has the following structural formula:

[0053] M 6 and M 7 are each, independently at each occurrence, selected from H, an alkali metal ion (e.g., Na + , K + ), or an ammonium ion (NH4 + ), preferably H or an alkali metal ion (e.g., Na + , K + ); and / or

[0054] R 8 , R 9 are each, independently at each occurrence, selected from H, unsubstituted C1-C6 alkyl, substituted C1-C6 alkyl, unsubstituted C2-C6 alkenyl, substituted C2-C6 alkenyl, unsubstituted C2-C6 alkynyl, or substituted C2-C6 alkynyl, wherein the substituents are selected from carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, amino, mono- or di-C1-C6 alkylamino, nitro, thiol, C1-C6 haloalkyl, C2-C6 alkenyl, or C2-C6 alkynyl, wherein the substituents are preferably carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, thiol, C2-C6 alkenyl, or C2-C6 alkynyl, and the substituents are most preferably carboxyl or hydroxyl,

[0055] M 8 and M 9 are each, independently at each occurrence, selected from H, an alkali metal ion (e.g., Na + , K + ), or an ammonium ion (NH4 + ), preferably H or an alkali metal ion (e.g., Na + , K +

[0056] ​The ratio of g and h indicates the molar ratio, which is 1 : (0.1-10), for example, 1 :0.1, 1 :0.2, 1 :0.3, 1 :0.4, 1 :0.5, 1 :0.6, 1 :0.7, 1 :0.8, 1 :0.9, 1 :1, 1 :2, 1 :3, 1 :4, 1 :5, 1 :6, 1 :7, 1 :8, 1 :9, 1 :10, or a sub-range consisting of any values within these ranges, preferably 1 : (0.5-2),

[0057] represents a direct or indirect connection;

[0058] In an embodiment, the dispersant derived from repeat units of an ethylenically unsaturated carboxylic acid comprises one or more selected from repeat units derived from acrylic acid, repeat units derived from maleic acid, and / or repeat units derived from itaconic acid. In an embodiment, the dispersant derived from repeat units of an ethylenically unsaturated carboxylic acid comprises repeat units derived from acrylic acid. In an embodiment, the dispersant derived from repeat units of an ethylenically unsaturated carboxylic acid comprises repeat units derived from maleic acid. In an embodiment, the dispersant derived from repeat units of an ethylenically unsaturated carboxylic acid comprises repeat units derived from itaconic acid.

[0059] In an embodiment, the dispersant derived from repeat units of an ethylenically unsaturated carboxylic acid comprises poly(acrylic acid-maleic acid) and / or salts thereof. The dispersant derived from repeat units of an ethylenically unsaturated carboxylic acid comprises poly(acrylic acid-itaconic acid) and / or salts thereof. The dispersant derived from repeat units of an ethylenically unsaturated carboxylic acid comprises poly(maleic acid-itaconic acid) and / or salts thereof.

[0060] In an embodiment, the composition described herein comprises:

[0061] a polymer containing repeat units derived from alpha hydroxy acrylic acid or a salt (e.g., sodium salt, potassium salt) thereof;

[0062] a dispersant containing repeat units derived from an ethylenically unsaturated carboxylic acid or a salt (e.g., sodium salt, potassium salt) thereof;

[0063] optionally an alkali, and

[0064] optionally a chelating agent.

[0065] In one embodiment, the weight average molecular weight of the polymer or salt thereof (e.g., sodium salt, potassium salt) containing repeating units derived from alpha hydroxy acrylic acid is 10,000 to 200,000, for example, 10,000, 15,000, 20,000, 25,000, 30,000, 35,000, 40,000, 45,000, 50,000, 60,000, 65,000, 70,000, 75,000, 80,000, 85,000, 90,000, 95,000, 100,000, 110,000, 120,000, 130,000, 140,000, 150,000, 160,000, 170,000, 180,000, 190,000, or 200,000, or a sub-range consisting of any of these ranges, preferably 40,000 to 100,000, most preferably 40,000 to 80,000.

[0066] In one embodiment, the weight average molecular weight of the dispersant or salt thereof (e.g., sodium salt, potassium salt) containing repeating units derived from ethylenically unsaturated carboxylic acid is 10,000 to 200,000, for example, 10,000, 15,000, 20,000, 25,000, 30,000, 35,000, 40,000, 45,000, 50,000, 60,000, 65,000, 70,000, 75,000, 80,000, 85,000, 90,000, 95,000, 100,000, 110,000, 120,000, 130,000, 140,000, 150,000, 160,000, 170,000, 180,000, 190,000, or 200,000, or a sub-range consisting of any of these ranges, preferably 40,000 to 100,000, most preferably 40,000 to 80,000.

[0067] In one embodiment, the polymer containing repeating units derived from alpha hydroxy acrylic acid comprises poly alpha hydroxy acrylic lactone, poly alpha hydroxy acrylic acid, and / or a salt thereof (e.g., sodium salt, potassium salt). Preferably, the polymer containing repeating units derived from alpha hydroxy acrylic acid comprises poly alpha hydroxy acrylic acid, and / or a salt thereof (e.g., sodium salt, potassium salt). Most preferably, the polymer containing repeating units derived from alpha hydroxy acrylic acid comprises poly alpha hydroxy acrylic acid salt (e.g., sodium salt, potassium salt).

[0068] In one embodiment, the dispersant comprises an anionic dispersant, a cationic dispersant, a nonionic dispersant, an amphoteric dispersant, an electro-neutral dispersant, or a high molecular weight dispersant.

[0069] In one embodiment, the dispersant is an anionic dispersant, a cationic dispersant, a nonionic dispersant, an amphoteric dispersant, an electro-neutral dispersant, or a high molecular weight dispersant.

[0070] In an embodiment, the dispersant comprises a high molecular dispersant. Preferably, the high molecular dispersant comprises a homopolymer and / or a copolymer thereof with acrylic acid, maleic acid, and itaconic acid as monomers, for example, a homopolymer with acrylic acid as a monomer, a homopolymer with maleic acid as a monomer, a homopolymer with itaconic acid as a monomer, a copolymer with acrylic acid and maleic acid as monomers, a copolymer with acrylic acid and itaconic acid as monomers, a copolymer with maleic acid and itaconic acid as monomers, and / or a copolymer with acrylic acid, maleic acid, and itaconic acid as monomers. Most preferably, the high molecular dispersant comprises poly(acrylic acid-co-maleic acid) and / or a salt thereof.

[0071] In an embodiment, the base comprises, for example, calcium hydroxide (Ca(OH)2), lithium hydroxide (LiOH), ammonium hydroxide (NH4OH), sodium hydroxide (NaOH), or potassium hydroxide (KOH), preferably sodium hydroxide (NaOH) or potassium hydroxide (KOH), most preferably sodium hydroxide (NaOH).

[0072] In an embodiment, the base comprises a solution of a base, for example, a solution of calcium hydroxide, a solution of lithium hydroxide, a solution of ammonium hydroxide, a solution of sodium hydroxide, or a solution of potassium hydroxide. In a more specific embodiment, the concentration of the solution of a base is 1-50 wt.%, for example, can be 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 35, 40, 45, or 50 wt.%, or a sub-range consisting of any of these ranges.

[0073] In an embodiment, the chelating agent comprises, for example, a (poly)hydroxycarboxylic acid-based chelating agent.

[0074] In an embodiment, the (poly)hydroxycarboxylic acid-based chelating agent comprises one or more components selected from the group consisting of citric acid (CA), hydroxycitric acid (HCA), gluconic acid, glucoheptonic acid, tartaric acid, or a salt thereof (for example, a sodium salt or a potassium salt, for example, sodium citrate, sodium hydroxycitrate, sodium gluconate, sodium glucoheptonate, sodium tartrate, potassium citrate, potassium hydroxycitrate, potassium gluconate, potassium glucoheptonate, or potassium tartrate).

[0075] In an embodiment, the composition further comprises one or more soluble magnesium salts and / or soluble tin salts, for example, magnesium chloride (MgCl2), magnesium sulfate (MgSO4), stannous chloride (SnCl2), stannic chloride (SnCl4), stannous sulfate (SnSO4), or stannic sulfate (Sn(SO4)2), and the like.

[0076] In an embodiment, the composition further comprises one or more magnesium salts and / or tin salts, for example, magnesium chloride (MgCl2), magnesium sulfate (MgSO4), stannous chloride (SnCl2), stannic chloride (SnCl4), stannous sulfate (SnSO4), or stannic sulfate (Sn(SO4)2), and the like.

[0077] In an embodiment, the composition further comprises a solvent, for example, water, for example, distilled water, for example, double distilled water.

[0078] In an embodiment, the composition is free of any of the following ingredients: silicate, nitrogen-containing ingredient, and / or phosphorus-containing ingredient.

[0079] In a preferred embodiment, the composition comprises the following ingredients:

[0080] a polymer or salt (e.g., sodium salt, potassium salt) thereof containing repeating units derived from alpha hydroxy acrylic acid;

[0081] a dispersant or salt (e.g., sodium salt, potassium salt) thereof containing repeating units derived from ethylenically unsaturated carboxylic acid;

[0082] a polyhydroxy carboxylic acid chelating agent;

[0083] a soluble magnesium salt or a soluble tin salt; and

[0084] an optional solvent.

[0085] In a preferred embodiment, the composition comprises the following ingredients:

[0086] poly alpha hydroxy acrylic acid and / or a salt (e.g., sodium salt, potassium salt) thereof;

[0087] poly(acrylic acid-maleic acid) and / or a salt thereof;

[0088] sodium hydroxide;

[0089] citric acid and / or a citrate salt;

[0090] magnesium sulfate; and

[0091] an optional water.

[0092] In an embodiment, the composition comprises 7-9 parts by mass of a polymer containing repeating units derived from alpha hydroxy acrylic acid or a salt (e.g., sodium salt, potassium salt) thereof, for example, 7.00, 7.05, 7.10, 7.15, 7.20, 7.25, 7.30, 7.35, 7.40, 7.45, 7.50, 7.55, 7.60, 7.65, 7.70, 7.75, 7.80, 7.85, 7.90, 7.95, 8.00, 8.05, 8.10, 8.15, 8.20, 8.25, 8.30, 8.35, 8.40, 8.45, 8.50, 8.55, 8.60, 8.65, 8.70, 8.75, 8.80, 8.85, 8.90, 8.95, or 9.00 parts, or a sub-range consisting of any of these ranges. Preferably, the composition comprises 7.5-8.5 parts by mass of a polymer containing repeating units derived from alpha hydroxy acrylic acid or a salt (e.g., sodium salt, potassium salt) thereof.

[0093] In a preferred embodiment, the composition comprises 7-9 parts by mass of poly alpha hydroxy acrylic acid and / or a salt (e.g., sodium salt, potassium salt) thereof, for example, 7.00, 7.05, 7.10, 7.15, 7.20, 7.25, 7.30, 7.35, 7.40, 7.45, 7.50, 7.55, 7.60, 7.65, 7.70, 7.75, 7.80, 7.85, 7.90, 7.95, 8.00, 8.05, 8.10, 8.15, 8.20, 8.25, 8.30, 8.35, 8.40, 8.45, 8.50, 8.55, 8.60, 8.65, 8.70, 8.75, 8.80, 8.85, 8.90, 8.95, or 9.00 parts, or a sub-range consisting of any of these ranges. Preferably, the composition comprises 7.5-8.5 parts by mass of poly alpha hydroxy acrylic acid and / or a salt (e.g., sodium salt, potassium salt) thereof.

[0094] In an embodiment, the composition comprises 13 to 20 parts by mass of a dispersant containing repeating units derived from an ethylenically unsaturated carboxylic acid or a salt (e.g., sodium salt, potassium salt) thereof, for example, 13.00, 13.10, 13.20, 13.30, 13.40, 13.50, 13.60, 13.70, 13.80, 13.90, 14.00, 14.10, 14.20, 14.30, 14.40, 14.50, 14.60, 14.70, 14.80, 14.90, 15.00, 15.10, 15.20, 15.30, 15.40, 15.50, 15.60, 15.70, 15.80, 15.90, 16.00, 16.10, 16.20, 16.30, 16.40, 16.50, 16.60, 16.70, 16.80, 16.90, 17.00, 17.10, 17.20, 17.30, 17.40, 17.50, 17.60, 17.70, 17.80, 17.90, 18.00, 18.10, 18.20, 18.30, 18.40, 18.50, 18.60, 18.70, 18.80, 18.90, 19.00, 19.10, 19.20, 19.30, 19.40, 19.50, 19.60, 19.70, 19.80, 19.90, or 20 parts, or a sub-range consisting of any of these ranges. Preferably, the composition comprises 14 to 19 parts by mass of a dispersant containing repeating units derived from an ethylenically unsaturated carboxylic acid or a salt (e.g., sodium salt, potassium salt) thereof.

[0095] In a preferred embodiment, the composition comprises 13-20 parts by mass of a homopolymer and / or a copolymer thereof (preferably poly(acrylic acid-maleic acid) and / or a salt thereof) having acrylic acid, maleic acid and / or itaconic acid as a monomer, for example, 13.00, 13.10, 13.20, 13.30, 13.40, 13.50, 13.60, 13.70, 13.80, 13.90, 14.00, 14.10, 14.20, 14.30, 14.40, 14.50, 14.60, 14.70, 14.80, 14.90, 15.00, 15.10, 15.20, 15.30, 15.40, 15.50, 15.60, 15.70, 15.80, 15.90, 16.00, 16.10, 16.20, 16.30, 16.40, 16.50, 16.60, 16.70, 16.80, 16.90, 17.00, 17.10, 17.20, 17.30, 17.40, 17.50, 17.60, 17.70, 17.80, 17.90, 18.00, 18.10, 18.20, 18.30, 18.40, 18.50, 18.60, 18.70, 18.80, 18.90, 19.00, 19.10, 19.20, 19.30, 19.40, 19.50, 19.60, 19.70, 19.80, 19.90, or 20 parts, or a sub-range consisting of any of these ranges. Preferably, the composition comprises 14-19 parts by mass of a homopolymer and / or a copolymer thereof (preferably poly(acrylic acid-maleic acid) and / or a salt thereof) having acrylic acid, maleic acid and / or itaconic acid as a monomer.

[0096] In an embodiment, the composition comprises 1-5 parts by mass of a base, for example, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, or 5.0 parts, or a sub-range consisting of any of these ranges. Preferably, the composition comprises 2-4 parts by mass of a base. In an embodiment, the parts by mass of the base is calculated on the basis of the effective ingredient of the base. When the base is a solution of a certain concentration, it can be converted into the amount of the effective ingredient thereof in advance.

[0097] In a preferred embodiment, the composition comprises sodium hydroxide in a mass fraction of 0.4-4 parts, for example, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, or 4.0 parts, or a sub-range consisting of any range of values therein. Preferably, the composition comprises sodium hydroxide in a mass fraction of 0.8-1.6 parts.

[0098] In a preferred embodiment, the composition comprises potassium hydroxide in a mass fraction of 0.4-4 parts, for example, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, or 4.0 parts, or a sub-range consisting of any range of values therein. Preferably, the composition comprises potassium hydroxide in a mass fraction of 0.8-1.6 parts.

[0099] In a preferred embodiment, the composition comprises 40 wt.% sodium hydroxide in a mass fraction of 2.5-12.5 parts, for example, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0, 10.5, 11.0, 11.5, 12.0, or 12.5 parts, or a sub-range consisting of any range of values therein. Preferably, the composition comprises 40 wt.% sodium hydroxide in a mass fraction of 5-10 parts.

[0100] In an embodiment, the composition comprises a chelating agent (preferably a (poly)hydroxy carboxylic acid-based chelating agent) in a mass fraction of 1-5 parts, for example, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, or 5.0 parts, or a sub-range consisting of any range of values therein. Preferably, the composition comprises a chelating agent (preferably a (poly)hydroxy carboxylic acid-based chelating agent) in a mass fraction of 2-4 parts.

[0101] In a preferred embodiment, the composition comprises 1-5 parts by mass of citric acid and / or citrate salt, for example, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, or 5.0 parts, or a sub-range consisting of any of these ranges. Preferably, the composition comprises 2-4 parts by mass of citric acid and / or citrate salt.

[0102] In an embodiment, the composition comprises 1-10 parts by mass of soluble magnesium salt and / or soluble tin salt, for example, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, or 10.0 parts, or a sub-range consisting of any of these ranges. Preferably, the composition comprises 2-8 parts by mass of soluble magnesium salt and / or soluble tin salt.

[0103] In a preferred embodiment, the composition comprises 1-5 parts by mass of soluble magnesium salt, for example, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, or 5.0 parts, or a sub-range consisting of any of these ranges. Preferably, the composition comprises 2-4 parts by mass of soluble magnesium salt.

[0104] In a preferred embodiment, the composition comprises magnesium sulfate in a mass fraction of 1-5 parts, for example, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, or 5.0 parts, or a sub-range consisting of any range of values therein. Preferably, the composition comprises magnesium sulfate in a mass fraction of 2-4 parts.

[0105] In an embodiment, the composition comprises solvent in a mass fraction of 50-80 parts, for example, 50, 50.5, 51, 51.5, 52, 52.5, 53, 53.5, 54, 54.5, 55, 55.5, 56, 56.5, 57, 57.5, 58, 58.5, 59, 59.5, 60, 60.5, 61, 61.5, 62, 62.5, 63, 63.5, 64, 64.5, 65, 65.5, 66, 66.5, 67, 67.5, 68, 68.5, 69, 69.5, 70, 70.5, 71, 71.5, 72, 72.5, 73, 73.5, 74, 74.5, 75, 75.5, 76, 76.5, 77, 77.5, 78, 78.5, 79, 79.5, or 80 parts, or a sub-range consisting of any range of values therein.

[0106] In a preferred embodiment, the composition comprises the following ingredients:

[0107] a polymer comprising repeating units derived from alpha hydroxy acrylic acid in a mass fraction of 7-9 parts;

[0108] a dispersant in a mass fraction of 13-20 parts;

[0109] sodium or potassium hydroxide in a mass fraction of 1-5 parts;

[0110] a (poly)hydroxy carboxylic acid chelating agent in a mass fraction of 1-5 parts;

[0111] a soluble magnesium salt and / or a soluble tin salt in a mass fraction of 1-10 parts; and

[0112] an optional solvent in a mass fraction of 50-80 parts.

[0113] In a preferred embodiment, the composition comprises the following ingredients:

[0114] poly alpha hydroxy acrylic acid and / or a salt thereof in a mass fraction of 7.5-8.5 parts.

[0115] 14-19 parts by weight of poly(acrylic acid-maleic acid) and / or its salts;

[0116] Sodium hydroxide in 2-4 parts by weight;

[0117] Citric acid and / or citrate in parts by weight of 2-4;

[0118] Magnesium sulfate in parts by weight of 2-4; and

[0119] An optional solvent in parts by weight of 50-80.

[0120] In another aspect, the present invention provides the use of compositions for stabilizing hydrogen peroxide used in bleaching pulp and fabrics.

[0121] In one embodiment, the pulp may be high-yield pulp (HYP).

[0122] In one embodiment, the fabric may contain various fibers, such as cellulose fibers (e.g., viscose and lyocell fibers), cotton, linen fibers, wool, silk, etc.

[0123] In one embodiment, the fabric may be pure cellulose fiber, pure cotton fabric, pure linen fabric, pure silk fabric or pure wool fabric, or a blended fabric containing cellulose fiber (e.g., viscose fiber and lyocell fiber), cotton, linen fiber, wool and / or silk, etc.

[0124] In this invention, the various components (except solvents) in the composition can be in the form of hydrates, solutions (referring to solutions of the specific component), etc., but their mass fractions are all based on their effective components.

[0125] In this invention, when the composition contains no solvent at all (but a specific component may still contain solvent) or contains a insufficient amount of solvent (but a specific component may still contain solvent, or all components may be in the same solvent), it may be in the form of a stock formulation or a stock solution; when the composition contains a sufficient amount of solvent and all components are in that solvent, the composition is in the form of a working solution. That is, the compositions of this invention may be provided in the form of a stock formulation, a stock solution, or a working solution.

[0126] In this invention, the various organic compounds and their derivatives include their various isomers.

[0127] Unless otherwise specified, percentages, proportions, ratios, contents or parts mentioned in this invention are by weight.

[0128] In this invention, each value can be an approximate value after rounding.

[0129] The composition of the present application does not contain phosphorus, nitrogen and other components that can cause water eutrophication, and all the components can be biodegraded, which is environmentally friendly. At the same time, it does not contain any silicate components, and will not reduce production efficiency due to fouling problems. In addition, the composition has a good stabilizing effect on hydrogen peroxide used for bleaching pulp and cellulose-containing fabrics. BRIEF DESCRIPTION OF DRAWINGS

[0130] Figure 1 shows the comparison of the performance of Examples 1-3 for stabilizing hydrogen peroxide when used for pulp bleaching.

[0131] Figure 2 shows the results of Examples 1 and Comparative Examples 4-10 for the rapid hydrogen peroxide stability test. DETAILED DESCRIPTION

[0132] In order to better understand the present application, the following further illustrates the content of the present application in combination with the examples, which are illustrative and not limiting to the present application. The experimental operations in the following examples are conventional operations unless otherwise specified, and the reagents and materials can be obtained from commercial channels unless otherwise specified.

[0133] Test Example 1: Pulp Bleaching Performance Evaluation

[0134] Examples 1-3 were prepared according to the formulations in the following table.

[0135] Table 1: Comparison of components of Examples 1-3 (g / g)

[0136] The prepared Examples 1-3 were used to evaluate the pulp bleaching performance, and the specific operation was as follows:

[0137] In this test, hydrogen peroxide solution, bleaching alkali and bleaching stabilizer of Examples 1-3 were added to the pulp, wherein the amount of hydrogen peroxide was 30 kg·t -1 absolutely dry pulp (absolutely dry pulp means 100 wt.% pulp, the amount of hydrogen peroxide was calculated based on 100 wt.% of hydrogen peroxide), the amount of bleaching alkali was 10 kg·t -1 absolutely dry pulp (the amount of bleaching alkali was calculated based on 100 wt.% of alkali), the amount of bleaching stabilizer (Example 1, 2 or 3) was 1.0 kg·t -1 (absolutely dry pulp).

[0138] Firstly, 4 portions of raw pulp, each corresponding to 20 g of absolute dry pulp, were preheated in a plastic bag in a water bath at 90°C. Each portion was added with the aforementioned amount of hydrogen peroxide solution and caustic soda (and water was added so that the pulp concentration was diluted to 20 wt.%), and in addition, 3 of the 4 portions were added with one of the bleaching stabilizers of Examples 1-3, respectively. After the pulp was mixed evenly, the plastic bag was sealed and placed in a constant temperature water bath at 90°C for bleaching. After bleaching for 90 minutes, the residual liquid was squeezed out, and the residual hydrogen peroxide and the pH value of the residual liquid were measured. After the pulp was washed, the pH value was adjusted to 4-5, and the pulp was sheeted in a Buchner funnel. After air-drying, the whiteness of the pulp was measured. The specific test results are shown in Figure 1.

[0139] It can be seen that the pulp treated by Examples 1-3 has a higher residual hydrogen peroxide content, and the pulp treated by Examples 1-2 also has a higher whiteness; among them, the pulp treated by Example 1 has the highest whiteness, and the residual hydrogen peroxide is also close to the highest. This shows that when the pulp is bleached by the present application, it plays a good function of stabilizing the hydrogen peroxide bleaching performance.

[0140] Test Example 2: Rapid hydrogen peroxide stability test

[0141] The above prepared Examples 1 and the following Comparative Examples 4-10 were used for this test.

[0142] Table 2: Specific information of Comparative Examples 4-10

[0143] The specific test process is as follows:

[0144] In this test process, the total mass of the aqueous hydrogen peroxide solution was fixed at 200 g, and the concentrations of Fe 2+ and Mn 2+ in the solution were 2 mg·L -1 , the concentration of the hydrogen peroxide stabilizer was 140 mg·L -1 (active component), and the concentration of hydrogen peroxide was 3 g·L -1 .

[0145] In a conical flask, the required amount of deionized water, a certain amount of Fe 2+ ((NH4)2Fe(SO4)2) and Mn 2+ (MnSO4), hydrogen peroxide stabilizer, 0.3 mL of 10% NaOH solution, and 30% hydrogen peroxide 1.8 mL were added in sequence. After sealing, it was placed in a water bath at 50°C for constant temperature for 90 min, and 5 mL of sample was taken at 5, 15, 30, 60, 90 min to measure the concentration of residual hydrogen peroxide. The specific test results are shown in Table 3 and Figure 2.

[0146] Table 3: Rapid hydrogen peroxide stability test

[0147] From the experimental results of Table 3 and Figure 2, it can be seen that the hydrogen peroxide concentration in Example 1 is always at the highest concentration level compared to other samples. From 0-60 minutes, the hydrogen peroxide concentration in Example 1 does not change, and after 90 minutes, the hydrogen peroxide loss in Example 1 is also small. This test result can also demonstrate that the present application can play a better function of stabilizing hydrogen peroxide.

Claims

1. A composition comprising the following components: Polymers containing repeating units derived from α-hydroxyacrylic acid or salts thereof (e.g., sodium salts, potassium salts); Dispersants containing repeating units derived from olefinic unsaturated carboxylic acids or their salts (e.g., sodium salts, potassium salts); Optional base and Optional chelating agent.

2. The composition of claim 1, wherein, The polymer containing repeating units derived from α-hydroxyacrylic acid comprises the following repeating units: Among them, R 1 and R 2 Each of the following, in each occurrence, is independently selected from H, unsubstituted C1-C6 alkyl, substituted C1-C6 alkyl, unsubstituted C2-C6 alkenyl, substituted C2-C6 alkenyl, unsubstituted C2-C6 ynyl, or substituted C2-C6 ynyl, wherein the substituent is selected from carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, amino, mono- or di-C1-C6 alkylamino, nitro, thiol, C1-C6 haloalkyl, C2-C6 alkenyl, or C2-C6 ynyl, wherein the substituent is preferably carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, thiol, C2-C6 alkenyl, or C2-C6 ynyl, and the most preferred substituent is carboxyl or hydroxyl. M, in each occurrence, is independently selected from H, alkali metal ions (e.g., Na), + K + ), or ammonium ions (NH4+) + ); and / or M 1 Each time it appears, it is independently selected from H, alkali metal ions (e.g., Na). + K + ), or ammonium ions (NH4+) + H or alkali metal ions (e.g., Na) are preferred. + K + ); and / or and / or M 2 and M 3 Each of these, in each occurrence, is independently selected from H, alkali metal ions (e.g., Na+). + K + ), or ammonium ions (NH4+) + H or alkali metal ions (e.g., Na) are preferred. + K + ); Preferably, the polymer containing repeating units derived from α-hydroxyacrylic acid comprises polyα-hydroxyacrylic acid and / or its salts (e.g., sodium salts, potassium salts); most preferably, the polymer containing repeating units derived from α-hydroxyacrylic acid comprises polyα-hydroxyacrylic acid salts (e.g., sodium salts, potassium salts).

3. The composition as claimed in any of the preceding claims, wherein, Dispersants containing repeating units derived from olefinic unsaturated carboxylic acids include the following repeating units: Among them, R 3 R 4 and R 5 Each of the following, in each occurrence, is independently selected from H, unsubstituted C1-C6 alkyl, substituted C1-C6 alkyl, unsubstituted C2-C6 alkenyl, substituted C2-C6 alkenyl, unsubstituted C2-C6 ynyl, or substituted C2-C6 ynyl, wherein the substituent is selected from carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, amino, mono- or di-C1-C6 alkylamino, nitro, thiol, C1-C6 haloalkyl, C2-C6 alkenyl, or C2-C6 ynyl, wherein the substituent is preferably carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, thiol, C2-C6 alkenyl, or C2-C6 ynyl, and the most preferred substituent is carboxyl or hydroxyl. M 4 Each time it appears, it is independently selected from H, alkali metal ions (e.g., Na). + K + ), or ammonium ions (NH4+) + H or alkali metal ions (e.g., Na) are preferred. + K + ); and / or Among them, M 5 Each time it appears, it is independently selected from H, alkali metal ions (e.g., Na). + K + ), or ammonium ions (NH4+) + H or alkali metal ions (e.g., Na) are preferred. + K + ); and / or Among them, M 6 and M 7 Each of these, in each occurrence, is independently selected from H, alkali metal ions (e.g., Na+). + K + ), or ammonium ions (NH4+) + H or alkali metal ions (e.g., Na) are preferred. + K + ); and / or Among them, R 6 and R 7 Each of the following, in each occurrence, is independently selected from H, unsubstituted C1-C6 alkyl, substituted C1-C6 alkyl, unsubstituted C2-C6 alkenyl, substituted C2-C6 alkenyl, unsubstituted C2-C6 ynyl, or substituted C2-C6 ynyl, wherein the substituent is selected from carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, amino, mono- or di-C1-C6 alkylamino, nitro, thiol, C1-C6 haloalkyl, C2-C6 alkenyl, or C2-C6 ynyl, wherein the substituent is preferably carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, thiol, C2-C6 alkenyl, or C2-C6 ynyl, and the most preferred substituent is carboxyl or hydroxyl; and / or Among them, R 8 R 9 Each of the following, in each occurrence, is independently selected from H, unsubstituted C1-C6 alkyl, substituted C1-C6 alkyl, unsubstituted C2-C6 alkenyl, substituted C2-C6 alkenyl, unsubstituted C2-C6 ynyl, or substituted C2-C6 ynyl, wherein the substituent is selected from carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, amino, mono- or di-C1-C6 alkylamino, nitro, thiol, C1-C6 haloalkyl, C2-C6 alkenyl, or C2-C6 ynyl, wherein the substituent is preferably carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, thiol, C2-C6 alkenyl, or C2-C6 ynyl, and the most preferred substituent is carboxyl or hydroxyl. M 8 and M 9 Each of these, in each occurrence, is independently selected from H, alkali metal ions (e.g., Na+). + K + ), or ammonium ions (NH4+) + H or alkali metal ions (e.g., Na) are preferred. + K + ); Preferably, the dispersant containing repeating units derived from olefinic unsaturated carboxylic acids has the following structural formula: Among them, R 3 R 4 and R 5 Each of the following, in each occurrence, is independently selected from H, unsubstituted C1-C6 alkyl, substituted C1-C6 alkyl, unsubstituted C2-C6 alkenyl, substituted C2-C6 alkenyl, unsubstituted C2-C6 ynyl, or substituted C2-C6 ynyl, wherein the substituent is selected from carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, amino, mono- or di-C1-C6 alkylamino, nitro, thiol, C1-C6 haloalkyl, C2-C6 alkenyl, or C2-C6 ynyl, wherein the substituent is preferably carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, thiol, C2-C6 alkenyl, or C2-C6 ynyl, and the most preferred substituent is carboxyl or hydroxyl. M 4 Each time it appears, it is independently selected from H, alkali metal ions (e.g., Na). + K + ), or ammonium ions (NH4+) + H or alkali metal ions (e.g., Na) are preferred. + K + ), M 6 and M 7 Each of these, in each occurrence, is independently selected from H, alkali metal ions (e.g., Na+). + K + ), or ammonium ions (NH4+) + H or alkali metal ions (e.g., Na) are preferred. + K + ), The molar ratio of a to b is 1:(0.1-10), preferably 1:(0.5-2). Indicates a direct or indirect connection; and / or M 5 Each time it appears, it is independently selected from H, alkali metal ions (e.g., Na). + K + ), or ammonium ions (NH4+) + H or alkali metal ions (e.g., Na) are preferred. + K + ), M 6 and M 7 Each of these, in each occurrence, is independently selected from H, alkali metal ions (e.g., Na+). + K + ), or ammonium ions (NH4+) + H or alkali metal ions (e.g., Na) are preferred. + K + ), The molar ratio of c to d is 1:(0.1-10), preferably 1:(0.5-2). Indicates a direct or indirect connection; and / or Among them, R 3 R 4 and R 5 Each of the following, in each occurrence, is independently selected from H, unsubstituted C1-C6 alkyl, substituted C1-C6 alkyl, unsubstituted C2-C6 alkenyl, substituted C2-C6 alkenyl, unsubstituted C2-C6 ynyl, or substituted C2-C6 ynyl, wherein the substituent is selected from carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, amino, mono- or di-C1-C6 alkylamino, nitro, thiol, C1-C6 haloalkyl, C2-C6 alkenyl, or C2-C6 ynyl, wherein the substituent is preferably carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, thiol, C2-C6 alkenyl, or C2-C6 ynyl, and the most preferred substituent is carboxyl or hydroxyl. M 4 Each time it appears, it is independently selected from H, alkali metal ions (e.g., Na). + K + ), or ammonium ions (NH4+) + H or alkali metal ions (e.g., Na) are preferred. + K + ), R 8 R 9 Each of the following, in each occurrence, is independently selected from H, unsubstituted C1-C6 alkyl, substituted C1-C6 alkyl, unsubstituted C2-C6 alkenyl, substituted C2-C6 alkenyl, unsubstituted C2-C6 ynyl, or substituted C2-C6 ynyl, wherein the substituent is selected from carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, amino, mono- or di-C1-C6 alkylamino, nitro, thiol, C1-C6 haloalkyl, C2-C6 alkenyl, or C2-C6 ynyl, wherein the substituent is preferably carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, thiol, C2-C6 alkenyl, or C2-C6 ynyl, and the most preferred substituent is carboxyl or hydroxyl. M 8 and M 9 Each of these, in each occurrence, is independently selected from H, alkali metal ions (e.g., Na+). + K + ), or ammonium ions (NH4+) + H or alkali metal ions (e.g., Na) are preferred. + K + ), The molar ratio of e to f is 1:(0.1-10), preferably 1:(0.5-2); Indicates a direct or indirect connection; and / or M 6 and M 7 Each of these, in each occurrence, is independently selected from H, alkali metal ions (e.g., Na+). + K + ), or ammonium ions (NH4+) + H or alkali metal ions (e.g., Na) are preferred. + K + ); and / or R 8 R 9 Each of the following, in each occurrence, is independently selected from H, unsubstituted C1-C6 alkyl, substituted C1-C6 alkyl, unsubstituted C2-C6 alkenyl, substituted C2-C6 alkenyl, unsubstituted C2-C6 ynyl, or substituted C2-C6 ynyl, wherein the substituent is selected from carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, amino, mono- or di-C1-C6 alkylamino, nitro, thiol, C1-C6 haloalkyl, C2-C6 alkenyl, or C2-C6 ynyl, wherein the substituent is preferably carboxyl, hydroxyl, C3-C6 cycloalkyl, C1-C6 alkoxy, thiol, C2-C6 alkenyl, or C2-C6 ynyl, and the most preferred substituent is carboxyl or hydroxyl. M 8 and M 9 Each of these, in each occurrence, is independently selected from H, alkali metal ions (e.g., Na+). + K + ), or ammonium ions (NH4+) + H or alkali metal ions (e.g., Na) are preferred. + K + ) The molar ratio of g to h is 1:(0.1-10), preferably 1:(0.5-2). Indicates a direct or indirect connection; More preferably, the dispersant derived from the repeating unit of an olefinic unsaturated carboxylic acid comprises one or more repeating units selected from acrylic acid, maleic acid, and / or itaconic acid. Most preferably, the dispersant containing repeating units derived from olefinic unsaturated carboxylic acids includes poly(acrylic acid-maleic acid) and / or its salts.

4. The composition as claimed in any of the preceding claims, wherein, The alkali includes calcium hydroxide, lithium hydroxide, ammonium hydroxide, sodium hydroxide, or potassium hydroxide, preferably sodium hydroxide or potassium hydroxide, and most preferably sodium hydroxide.

5. The composition as claimed in any of the preceding claims, wherein, The alkali includes a solution of alkali with a concentration of 1-50 wt.%, such as calcium hydroxide solution, lithium hydroxide solution, ammonium hydroxide solution, sodium hydroxide solution or potassium hydroxide solution, preferably a 40 wt.% sodium hydroxide solution.

6. The composition as claimed in any of the preceding claims, wherein, The chelating agent comprises a (poly)hydroxycarboxylic acid chelating agent, such as citric acid (CA), hydroxycitric acid (HCA), gluconic acid, glucoheponic acid, tartaric acid or salts thereof; more preferably, the (poly)hydroxycarboxylic acid chelating agent comprises citric acid and / or citrate.

7. The composition as claimed in any of the preceding claims, wherein, The composition further comprises one or more soluble magnesium salts and / or soluble tin salts, such as magnesium chloride (MgCl2), magnesium sulfate (MgSO4), stannous chloride (SnCl2), stannous chloride (SnCl4), stannous sulfate (SnSO4) or tin sulfate (Sn(SO4)2), preferably magnesium sulfate (MgSO4).

8. The composition as claimed in any of the preceding claims, wherein, The composition further comprises a solvent, such as water, such as distilled water, such as double-distilled water.

9. The composition as claimed in any of the preceding claims, wherein, The composition comprises 7-9 parts by mass of a polymer containing repeating units derived from α-hydroxyacrylic acid; preferably, the composition comprises 7.5-8.5 parts by mass of a polymer containing repeating units derived from α-hydroxyacrylic acid.

10. The composition as claimed in any of the preceding claims, wherein, The composition contains 13-20 parts by mass of a dispersant comprising repeating units derived from olefinic unsaturated carboxylic acids; preferably, the composition contains 14-19 parts by mass of a dispersant comprising repeating units derived from olefinic unsaturated carboxylic acids.

11. The composition as claimed in any of the preceding claims, wherein, The composition contains 1-5 parts by mass of alkali (if present); preferably, the composition contains 2-4 parts by mass of alkali.

12. The composition as claimed in any of the preceding claims, wherein, The composition contains 1-5 parts by weight of a chelating agent (if present); preferably, the composition contains 2-4 parts by weight of a chelating agent.

13. The composition as claimed in any of the preceding claims, wherein, The composition contains 1-10 parts by mass of soluble magnesium salt and / or soluble tin salt (if present); preferably, the composition contains 1-8 parts by mass of soluble magnesium salt and / or soluble tin salt; more preferably, the composition contains 1-5 parts by mass of soluble magnesium salt; and most preferably, the composition contains 2-4 parts by mass of soluble magnesium salt.

14. The composition as claimed in any of the preceding claims, wherein, The composition contains 50-80 parts by mass of solvent (if present).

15. Use of the composition according to any one of claims 1-14 for stabilizing hydrogen peroxide used in bleaching pulp and fabrics.

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