Preparation method of high-solid-content aqueous polyurethane for leather
A water-based, polyurethane technology, used in textiles and paper making, etc., can solve the problems of mechanical properties (tensile strength, elongation at break and modulus, poor oxidation resistance of toluene diisocyanate, poor coating performance, etc.) Excellent performance, increased solid content, good film-forming properties
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0027] Example 1: Under the operating conditions of the comparative example, 0.4kg of poly(neopentyl glycol adipate) was used to replace part of polyethylene adipate (the sum of OH moles was the same as that of the comparative example), and HDI replaced half of the IPDI (NCO moles), the prepolymerization reaction time is 3h, and the other conditions are the same as the comparative example. Finally, a white translucent blue emulsion with a solid content of 50% is obtained.
Example Embodiment
[0028] Example 2: Under the operating conditions of the comparative example, 1.0kg, polytetrahydrofurandiol and 0.255kg polyethylene glycol (M=1000) were used to replace polyethylene adipate. The prepolymerization reaction time was 2.5h, and the neutralization The degree is 90%, and other conditions are the same as the comparative example. Finally, a white translucent blue emulsion with a solid content of 52% is obtained.
Example Embodiment
[0029] Example 3: Under the operating conditions of the comparative example, 0.5 kg of polytetrahydrofuran glycol was used to replace part of the polyethylene adipate (the sum of OH moles was the same as the comparative example), and IPDI was added according to R=1.3 for prepolymerization reaction time It was 2.5h, and other conditions were the same as the comparative example. Finally, a white translucent blue emulsion with a solid content of 57% was obtained.
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.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap