Method for preparing filling leather fatliquoring agent
A leather fatliquor and filling technology, which is applied in the field of polymer fatliquor preparation, can solve the problems of unsuitability for producing waterproof leather, insufficient leather softness and oily feeling, and inability to absorb leather fibers.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0045] The preparation method of filling leather fatliquoring agent comprises the following steps:
[0046] (1) Mix component A, component B, component C and initiator according to the weight ratio of 100:8~48:0~16:0.2~5 at normal temperature, stir evenly, and then raise the temperature to 80℃~160℃ , under the action of an initiator, component A, component B and component C undergo a copolymerization reaction, and the reaction time is 3.0 to 5 hours;
[0047] (2) Add alkali to the polymer after the copolymerization reaction, the alkali and the polymer undergo a neutralization reaction at a temperature of 25°C to 60°C, and neutralize the polymer to a pH value of 6.0 to 8.5, when the pH value Continue constant temperature neutralization for 0.5 to 3.0 hours when the end point is reached.
[0048] (6) Mixing the neutralized polymer and natural phospholipid at 25°C-50°C, the weight ratio of the polymer to the natural phospholipid is 60-100:0-40.
Embodiment 1
[0051] Add 100g of corn oil, 0.2g of benzoyl peroxide, and 24g of maleic anhydride into a three-neck flask equipped with a stirrer, heat to 80°C and stir for 40 minutes at a constant temperature, then continue to raise the temperature to 120°C and stir for 3 hours at a constant temperature. Remove the unreacted monomer in vacuum, lower the temperature to 35°C, add 40% sodium hydroxide aqueous solution for neutralization, keep the system temperature not exceeding 60°C and stir for 45min until the pH of the polymer system is 7.5-8.5. . Then add 50g of natural phospholipids, and keep the temperature of the system not exceeding 50°C and stir for 60min to obtain the final product. The product is brown-yellow viscous liquid.
[0052] The product obtained in Example 1 is used to fatliquify yellow cowhide wet blue leather with a thickness of 1.2 mm. Before adding the fatliquoring agent, the pH value of the leather is neutralized to 5.5, and the liquid ratio is adjusted to be 150%, an...
Embodiment 2
[0054] Add 80g of soybean oil, 20g of oleic acid, 3.5g of ammonium persulfate, 20g of acrylic acid and 8g of methyl methacrylate into a three-neck flask equipped with a stirrer, heat it to 80°C and stir at a constant temperature for 60min, then continue to raise the temperature to 130°C ℃, stirring at constant temperature for 3h. Vacuum remove unreacted monomers, lower the temperature to 35°C, add ammonia water for neutralization, keep the system temperature not exceeding 60°C and stir for 45min until the pH of the polymer system is 7.5-8.2. Then add 40 g of natural phospholipids and stir for 60 min while keeping the system temperature not exceeding 50° C. to obtain the final product. The product is brown-yellow viscous liquid.
PUM
Property | Measurement | Unit |
---|---|---|
decomposition temperature | aaaaa | aaaaa |
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