Formaldehyde catching agent, preparation method thereof and application thereof in formaldehyde removal
A formaldehyde scavenger, methyl technology, applied in fiber types, textiles and papermaking, fiber treatment, etc., to achieve the effect of low production cost, high formaldehyde elimination efficiency, and high affinity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0068] The amount of each raw material used in the preparation of the formaldehyde scavenger in this embodiment is as shown in Table 1, Example 1.
[0069] 1. Preparation of formaldehyde scavenger
[0070] Add various raw materials in the feeding stage to the reactor, the pH value is 4, and the temperature is raised to 85°C. After all the raw materials are completely dissolved, 10wt% ammonium persulfate aqueous solution is started to be added dropwise, and the temperature is maintained at 85-90°C during this process. After hours of dripping, continue to incubate at 90° C. for 4 hours. After the heat preservation is completed, cool down to 0-5°C with ice water, add the required sodium hypochlorite and sodium hydroxide, and react for 5 hours to obtain the formaldehyde scavenger.
[0071] The formaldehyde scavenger prepared in this example is a cross-linked polymer, and its structural units are shown in formula I, formula II, formula III and formula IV,
[0072]
[0073] In ...
Embodiment 2
[0082] The amount of each raw material used in the preparation of the formaldehyde scavenger in this embodiment is as shown in Table 1, Example 2.
[0083] 1. Preparation of formaldehyde scavenger
[0084] Add various raw materials in the feeding stage to the reactor, the pH value is 4, and the temperature is raised to 75°C. After all the raw materials are completely dissolved, 20wt% ammonium persulfate aqueous solution is started to be added dropwise, and the temperature is maintained at 75-80°C during this process. After 1 hour of dripping, continue to incubate at 80° C. for 4 hours. After the heat preservation is completed, cool down to 5-10°C with ice water, add the required sodium hypochlorite and sodium hydroxide, and react for 6 hours to obtain the formaldehyde scavenger.
[0085] The formaldehyde scavenger prepared in this example is a cross-linked polymer, and its structural units are shown in formula I, formula II, formula III and formula IV,
[0086]
[0087] I...
Embodiment 3
[0096] The amount of each raw material used in the preparation of the formaldehyde scavenger in this embodiment is as shown in Table 1, Example 3.
[0097] 1. Preparation of formaldehyde scavenger
[0098] Add various raw materials in the feeding stage to the reactor, the pH value is 4.5, and the temperature is raised to 65°C. After all the raw materials are completely dissolved, 30wt% ammonium persulfate aqueous solution is started to be added dropwise. During this process, the temperature is kept at 65-70°C. After 1 hour of dripping, continue to incubate at 70° C. for 5 hours. After the heat preservation is completed, cool down to 5-10°C with ice water, add the required sodium hypochlorite and sodium hydroxide, and react for 8 hours to obtain the formaldehyde scavenger.
[0099] The formaldehyde scavenger prepared in this example is a cross-linked polymer, and its structural units are shown in formula I, formula II, formula III and formula IV,
[0100]
[0101] In formu...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com