Method for preparing polyvinyl chloride resin
A technology of polyvinyl chloride resin and polyvinyl alcohol, which is applied in the field of preparation of polyvinyl chloride resin, can solve problems such as difficult control of granulation process, method of reducing sticky matter, technology cannot be applied, etc., and achieves the prospect of large-scale industrialization, The particle size is easy to control and the effect of industrial operation is strong
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0030] The polymerization reaction is carried out in a kettle with a volume of 5 L, where the stirring is a two-layer flat paddle, the bottom tube and the galvanic sleeve are used as baffles. The technical conditions and process are briefly described as follows: first, 2.1Kg desalted water, PVA (I) 0.19g, PVA (II) 0.68g, HPMC 0.68g, 0.7g sorbitan monostearate (HLB 4.7), 0.10g 2-mercaptoethanol, 0.5g azobisisoheptanonitrile, 0.5g NH 4 HCO 3Put it into the kettle, start stirring after the pressure test, add 1.4Kg of VCM after vacuuming to -0.90MPa, raise the temperature to 62°C to start polymerization, keep the polymerization temperature until the polymerization pressure drops by 0.15MPa, add 0.3g diethylhydroxylamine to terminate the reaction, and automatically After the monomer is recovered by pressure, the material is discharged, and the PVC resin is obtained after centrifugal drying.
[0031] The above dispersant PVA (Ⅰ) is polyvinyl alcohol with a degree of alcoholysis of...
Embodiment 2
[0034] Change the add-on of dispersant PVA (I) into 0.26g, change the add-on of dispersant PVA (II) into 1.60g, change the add-on of dispersant HPMC into 0.40g, and other processing conditions are the same as embodiment 1, and its test results are as follows : K value 58, apparent density 0.42 (g / ml), 100 g resin plasticizer absorbs 33 g, average particle size 110.0 (μm), distribution width 1.20.
Embodiment 3
[0036] Change the add-on of dispersant PVA (I) into 0.22g, change the add-on of dispersant PVA (II) into 1.10g, change the add-on of dispersant HPMC into 0.40g, and other process conditions are the same as embodiment 1, and its test results are as follows : K value 57, apparent density 0.46 (g / ml), 100 g resin plasticizer absorbs 30 g, average particle size 113.0 (μm), distribution width 1.20.
PUM
Property | Measurement | Unit |
---|---|---|
viscosity | aaaaa | aaaaa |
viscosity | aaaaa | aaaaa |
particle size | 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