Patent
Method for preparing high fluffiness down by multiple treatments with metal salts
| العنوان: | Method for preparing high fluffiness down by multiple treatments with metal salts |
|---|---|
| Patent Number: | 10760,209 |
| تاريخ النشر: | September 01, 2020 |
| Appl. No: | 16/805781 |
| Application Filed: | March 01, 2020 |
| مستخلص: | A method for preparing a high fluffiness down by multiple treatments with metal salts includes: degreasing a down sample with a degreasing agent; washing the down sample with water; oxidizing the down sample with an oxidizing agent; washing the down sample with water; conducting a first crosslinking treatment with basic zirconium sulfate; washing the down sample with water; conducting a second crosslinking treatment with basic aluminum sulfate; washing the down sample with water; and drying the down sample to obtain the high fluffiness down. |
| Inventors: | Qiang, Taotao (Xi'an, CN); Pu, Yadong (Xi'an, CN); Zhang, Qi (Xi'an, CN) |
| Assignees: | SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY (Xi'an, CN) |
| Claim: | 1. A method for preparing a high fluffiness down by multiple treatments with metal salts consisting of the following steps in a sequential order: degreasing a down sample with a degreasing agent; washing the down sample with water; oxidizing the down sample with an oxidizing agent; washing the down sample with water; conducting a first crosslinking treatment with basic zirconium sulfate; washing the down sample with water; conducting a second crosslinking treatment with basic aluminum sulfate; washing the down sample with water; and drying the down sample to obtain the high fluffiness down, wherein degreasing the down sample with the degreasing agent is performed by: adding the down sample to water in a weight ratio of the down sample to water being 1:40-50; adding the degreasing agent to the down sample and water in a ratio of the degreasing agent to water being 1-2 g:1 L; and conducting the degreasing at 40 to 45° C. for 60 to 70 min, wherein oxidizing the down sample with the oxidizing agent is performed by: adding the down sample to water in a weight ratio of the down sample and water being 1:30-35; adding the oxidizing agent to the down sample and water in a ratio of the oxidizing agent to water being 0.8-1 g:1 L; and conducing the oxidization at 25 to 30° C. for 30 to 40 min, wherein conducting the first crosslinking treatment with basic zirconium sulfate is performed by: adding the down sample to water in a weight ratio of the down sample to water being 1:25-30 to obtain a first mixture system; adding a first organic acid to the first mixture system to pH of 3-3.5; adding basic zirconium sulfate in portions in a ratio of basic zirconium sulfate to water being 2-4 g:1 L; and conducting the first crosslinking treatment at 30 to 50° C. for 30 to 90 min, and wherein conducting the second crosslinking treatment with basic aluminum sulfate is performed by: adding the down sample to water in a weight ratio of the down sample to water being 1:25-30 to obtain a second mixture system; adding a second organic acid to the second mixture system to pH of 3.5-4.5; adding basic aluminum sulfate in portions in a ratio of basic zirconium sulfate to water being 1-2 g:1 L; and conducting the first crosslinking treatment at 30 to 50° C. for 90-120 min. |
| Claim: | 2. The method of claim 1 , wherein the degreasing agent is a cationic surfactant, an anionic surfactant, a nonionic surfactant, a mixture of the cationic surfactant and the nonionic surfactant, or a mixture of the anionic surfactant and the nonionic surfactant. |
| Claim: | 3. The method of claim 1 , wherein the oxidizing agent is hydrogen peroxide or sodium hypochlorite. |
| Claim: | 4. The method of claim 1 , wherein the first organic acid is fruit acid, acetic acid, or lactic acid. |
| Claim: | 5. The method of claim 1 , wherein the second organic acid is oxalic acid, acetic acid or lactic acid. |
| Patent References Cited: | 2886399 May 1959 Pasternak 5073304 December 1991 Yamazaki 2003/0075289 April 2003 Stoltz 105002740 October 2015 |
| Primary Examiner: | Khan, Amina S |
| رقم الانضمام: | edspgr.10760209 |
| قاعدة البيانات: | USPTO Patent Grants |
| الوصف غير متاح. |