Method for preparation of ethylene vinylacetate copolymer
A vinyl acetate copolymer, vinyl acetate technology, applied in the direction of pressure vessels used in chemical processes, etc., can solve problems such as low mechanical strength and low crystallinity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0023] According to one embodiment of the present invention, a kind of preparation method of ethylene-vinyl acetate copolymer is provided, the method comprises the following steps: in the presence of initiator, make ethylene monomer and vinyl acetate Monomer polymerization, wherein the temperature of the upper section of the autoclave reactor in the polymerization step is 130°C to 160°C, the temperature of the lower section of the autoclave reactor in the polymerization step is 170°C to 230°C, and the pressure of the autoclave reactor is 1800 bar to 2100 bar.
[0024] Ethylene-vinyl acetate (EVA) copolymers can be prepared in autoclave reactors or tubular reactors, generally, ethylene-vinyl acetate prepared in autoclave reactors has a broad molecular weight distribution, while in tubular reactors Ethylene-vinyl acetate produced in a reactor has a narrow molecular weight distribution, and thus, can be produced by selecting a reactor according to usage.
[0025] Meanwhile, in t...
PUM
Property | Measurement | Unit |
---|---|---|
polydispersity index | aaaaa | aaaaa |
polydispersity index | 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