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CN-121990938-A - Composite forms of tetraacetylethylene diamine

CN121990938ACN 121990938 ACN121990938 ACN 121990938ACN-121990938-A

Abstract

The present invention relates to a complex form of tetraacetylethylene diamine (TAED) and a process for its preparation. The complex forms may include new crystalline forms. The invention also relates to the crystalline form itself. The invention also relates to compositions comprising these forms of tetraacetylethylene diamine.

Inventors

  • Mohammed Jacob
  • Samela Jacob

Assignees

  • 一星解决方案有限公司

Dates

Publication Date
20260508
Application Date
20210908
Priority Date
20200908

Claims (13)

  1. 1. A crystalline form of TAED (form III) characterized by having an XRPD pattern with only two peaks at 2Θ 9.1746 ± 0.2 and 18.1788 ± 0.2 when the crystalline form is dispersed in a DES solvent (DES), an Ionic Liquid (IL), and wherein the XRPD is measured using Cu radiation with a K α2 /K α1 ratio of 0.5.
  2. 2. The crystalline form of claim 1, wherein the crystalline form has an XRPD pattern substantially as shown in figure 2.
  3. 3. A composition comprising the crystalline form of TAED of claim 1 or claim 2.
  4. 4. The composition of claim 3, wherein the composition further comprises a bleach.
  5. 5. The composition of claim 4, wherein the bleaching agent is a metal percarbonate.
  6. 6. The composition of claim 5, wherein the bleaching agent is sodium percarbonate or potassium percarbonate.
  7. 7. The composition of any one of claims 3 to 6, wherein the composition further comprises at least one surfactant or wetting agent.
  8. 8. The composition according to any one of claims 3 to 7, wherein the composition further comprises at least one additive selected from the group consisting of a pH adjuster, a chelating agent, a stabilizer, a diluent, a glidant, a binder, an effervescent, a disintegrant, and a coating agent.
  9. 9. The composition of any one of claims 3 to 8, wherein the composition further comprises an ionic component selected from DES and ionic liquids.
  10. 10. The composition according to any one of claims 3 to 9, wherein the composition is a solid composition.
  11. 11. The composition of claim 10, wherein the composition is a powder composition.
  12. 12. The composition of any one of claims 3 to 11, wherein the composition is a detergent composition.
  13. 13. The composition according to any one of claims 3 to 11, wherein the composition is a bleaching composition.

Description

Composite forms of tetraacetylethylene diamine The application is a divisional application of an application patent application with the application number 202180061607.9 and the application date 2021, 9 and 8, and the application name of a 'compound form of tetraacetylethylene diamine'. Technical Field The present invention relates to a complex form of tetraacetylethylene diamine (TAED) and a process for its preparation. The complex forms may include new crystalline forms. The invention also relates to the crystalline form itself. The invention also relates to compositions comprising these forms of tetraacetylethylene diamine. Background Tetraacetylethylene diamine (TAED; IUPAC name: N, N' -ethylene bis (diacetamide)); (CAS registry No. 10543-57-4) is a known bleach activator, primarily for use in laundry and dish solid detergents or additives. TAED is known in two crystalline forms, form I and form II. Form I has very low solubility in water (0.2 g/l at 20 ℃) and low dissolution rate. It is an object of certain embodiments of the invention to provide stable forms of TAED, such as stable crystalline forms. It is an object of certain embodiments of the invention to provide forms of TAED that are more stable than other forms, such as crystalline forms. It is an object of certain embodiments of the invention to provide forms (e.g., crystalline forms) of TAED that are more soluble than other forms (e.g., other crystalline forms). Certain embodiments of the present invention meet some or all of the above objectives. Disclosure of Invention In a first aspect of the invention, there is provided a complex form of tetraacetylethylene diamine (TAED), comprising TAED and an ionic component, wherein the ionic component is selected from the group consisting of Deep Eutectic Solvents (DES), ionic Liquids (IL) or mixtures thereof. The solubility of TAED in the composite form of the invention at 20 ℃ is typically greater than or equal to about 2g/L (calculated as the mass of TAED present in the composite). The solubility of commercially available TAED is typically about 200mg/L. Similarly, the solubility of TAED in the present complex forms is generally much higher (about 4 g/L) than in the commercially available forms at 20 ℃ in the presence of a bleaching agent such as sodium percarbonate. Thus, the complex forms of the present invention are capable of producing high concentrations of peracetic acid in water when contacted with a suitable bleaching agent. The composite form may be a gel. In this embodiment, the TAED will be the solid component of the gel and the ionic component will be the liquid component of the gel. TAED may be dispersed in a liquid composed of ionic components. The composite form may be a solid. TAEDs may be encapsulated in a solid of ionic components. TAED may be mixed with the ionic component. The complex form may include a surfactant. The surfactant may be a solid surfactant. Typically, the complex form comprising the solid surfactant will be a solid. The solid surfactant may be mixed with TAED and the ionic component. When present, the surfactant may be present in an amount of from 10% w/w to 80% w/w of the total weight of the compounded form. TAED in the complex may be in crystalline form III. The composite form may be characterized in that the form is obtainable (e.g. obtained) by: Heating the TAED and Deep Eutectic Solvent (DES) forming component, DES solvent (DES), ionic Liquid (IL) or mixtures thereof to a temperature of greater than or equal to 150 ℃; The mixture is cooled to form a composite form. The molar ratio of TAED to ionic component may be in the range of 3:1 to 1:3. The molar ratio of TAED to ionic component may be in the range of 2:1 to 1:2. The molar ratio of TAED to ionic component may be about 1:1. TAED may be present in a total weight greater than 10% of the sum of TAED and ionic component weights. TAED may be present in a total weight greater than 25% of the sum of TAED and ionic component weights. TAED may be present in a total weight greater than 50% of the sum of TAED and ionic component weights. TAEDs may be present in a total weight of less than 95% of the sum of TAEDs and ionic components by weight. TAEDs may be present in a total weight of less than 90% of the sum of TAEDs and ionic components by weight. TAEDs may be present in a total weight of less than 80% of the sum of the weight of TAEDs and ionic components. In a second aspect of the invention, there is provided a crystalline form of TAED, which crystalline form is form III. The complex form of the TAED of the first aspect may be the crystalline form of the second aspect. Like the complex form of the first aspect, the solubility and dissolution rate of TAED form III at 20 ℃ is significantly higher than that of commercially available TAED. Thus, TAED form III of the present invention is capable of producing high concentrations of peracetic acid in water when contacted with a suitable bleach. The crystalline form (