Methanal eliminating agent, plaster slab with function of eliminating methanal and preparation thereof
A formaldehyde elimination agent and gypsum board technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve problems such as poor effect, limited amount of formaldehyde elimination, high price, etc., and achieve simple and rapid formaldehyde elimination in the production process , Eliminate the effect of good effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0034] (1) Preparation of formaldehyde scavenger:
[0035] 1) Prepare raw materials according to the following weight ratio:
[0036] Distilled water 569kg
[0037] Phosphoric acid (concentration 85%) 80kg
[0038] Citric acid 20kg
[0039] Urea 240kg
[0040] Melamine 30kg
[0044] Polyvinyl alcohol (1799) 6kg
[0045] Acetyl ethyl acetate 0.6kg
[0046] 2) Add all the phosphoric acid, citric acid, urea and melamine in the above raw materials into a reactor filled with 50% of the total amount of distilled water, stir and mix evenly, heat up to 95°C, and react until the pH of the material=6.0- 7.0;
[0047] 3) Keep the temperature at 95°C and add polyvinyl alcohol (1799), stir until completely dissolved;
[0048] 4) Cool down to 50-55°C, add the remaining distilled water and all the ammonium chloride, ammonium sulfate and sodium chloride, and keep warm for 30-40 minutes;
...
Embodiment 2
[0059] (1) Preparation of formaldehyde scavenger:
[0060] 1) Prepare raw materials according to the following weight ratio:
[0061] Deionized water 500kg
[0062] Phosphoric acid (concentration 85%) 20kg
[0063] Formic acid (concentration 85%) 2kg
[0064] Urea 150kg
[0065] Dicyandiamide 50kg
[0066] Ammonium phosphate 10kg
[0067] Ammonium acetate 10kg
[0068] Potassium chloride 10kg
[0069] Polyvinyl alcohol (2099) 20kg
[0070] Acetyl ethyl acetate 5kg
[0071] 2) Add all the phosphoric acid, formic acid, urea and dicyandiamide in the above raw materials into a reactor filled with 50% of the total amount of deionized water, stir and mix evenly, heat up to 90°C, and react to the pH of the material =6.0-7.0;
[0072] 3) Keep the temperature at 90°C and add polyvinyl alcohol, stir until completely dissolved;
[0073] 4) Cool down to 45-50°C, add the remaining deionized water and all ammonium phosphate, ammonium acetate and potassium chloride, and keep warm ...
Embodiment 3
[0084] (1) Preparation of formaldehyde scavenger:
[0085] 1) Prepare raw materials according to the following weight ratio:
[0086] Well water 650kg
[0087] Acetic acid (concentration (95%) 150kg
[0088] Formic acid (concentration 85%) 10kg
[0089] Urea 350kg
[0090] Dicyandiamide 30kg
[0091] Ammonium phosphate 80kg
[0092] Polyvinyl alcohol (1799) 10kg
[0093] Acetyl ethyl acetate 2.5kg
[0094] 2) Add all the acetic acid, formic acid, urea and dicyandiamide in the above raw materials into the reactor equipped with 50% of the total amount of well water, stir and mix evenly, heat up to 105 ° C, and react until the pH of the material = 6.0-7.0;
[0095] 3) Keep the temperature at 105°C and add polyvinyl alcohol, stir until completely dissolved;
[0096] 4) Cool down to 50-55°C, add the remaining well water and all the ammonium phosphate, and keep warm for 30-40 minutes;
[0097] 5) Cool down to below 30°C, add all the acetyl ethyl acetate, stir for 5-10 minu...
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