Unlock instant, AI-driven research and patent intelligence for your innovation.

A production method of low-cost high-barrier polypropylene film

A high-barrier, polypropylene film technology, applied in the field of packaging materials, can solve the problems of easy scratching and scratch resistance, and achieve the effects of low cost, improved barrier performance and good compatibility

Active Publication Date: 2021-06-29
NINGBO RUICHENG PACKING MATERIAL
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the polypropylene film of the prior art is not scratch-resistant, and is easily scratched after being rubbed with foreign objects

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for producing a low-cost high-barrier polypropylene film, comprising the following steps:

[0027] (1) Under anhydrous and oxygen-free conditions, toluene, aluminum alkyl as cocatalyst, C-donor external electron donor and chain transfer agent ZnEt 2 Add to the Schlenk bottle, and finally add the main catalyst TiCl 4 / MgCl 2 , feed propylene with a pressure of 0.1-1.1Mpa, control the polymerization temperature to 50°C, and the polymerization time to 1h to obtain isotactic polypropylene.

[0028] (2) Oxidize isotactic polypropylene with dry oxygen, react at an oxidation temperature of 100 ° C for 0.5 h, quench with 1 mol / L hydrochloric acid aqueous solution to deactivate the catalyst, stir for 10 min and let stand with a separatory funnel Separate the liquid, remove the supernatant and the middle layer; remove the solvent in the solid product, wash it repeatedly with distilled water and toluene, and then dry it in vacuum to obtain isotactic polypropylene with t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a production method of a low-cost high-barrier polypropylene film, which uses isophorone diisocyanate as a coupling agent to couple hydroxyl-terminated isotactic polypropylene with polyethylene glycol monomethyl ether, preparation, etc. Isotactic polypropylene-b-polyethylene glycol diblock, the synthesis technology method is easy to implement, with low cost and high efficiency, the raw materials used are simple and easy to get, and the price is low. Ethylene glycol diblock is used as a compatibilizer for isotactic polypropylene and polyvinyl alcohol, polyvinyl alcohol has excellent oxygen barrier properties, and isotactic polypropylene‑b‑polyethylene glycol diblock is used as a compatibilizer Finally, there is a good compatibility between tactic polypropylene and polyvinyl alcohol, so that the polyvinyl alcohol phase can be uniformly dispersed in the polypropylene resin to form a sub-continuous phase or a lamellar structure, thereby significantly improving the blend film. Barrier properties.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a production method of a low-cost high-barrier polypropylene film. Background technique [0002] The barrier performance of the polypropylene packaging film in the prior art is not good, and substances such as oxygen, carbon dioxide, water vapor, aroma and small organic molecules are easy to pass through the polypropylene film and affect the performance and life of the packaged object. At present, there are mainly four methods for preparing high-barrier polypropylene films: multilayer composite, surface coating, nanocomposite modification and blend modification. These four methods all have their own defects and deficiencies. Problems such as residues, waste separation and post-processing difficulties; surface coating equipment is expensive, high cost, and film layer is uneven; nanocomposites are prone to particle agglomeration, resulting in decreased transparency and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L87/00C08L29/04C08L23/14C08L91/06C08L63/00C08K3/22C08K5/20C08J5/18B32B27/08B32B27/30B32B27/32B32B27/18B32B27/28
CPCB32B27/08B32B27/18B32B27/28B32B27/306B32B27/32C08J5/18C08J2323/12C08J2323/14C08J2487/00C08K3/2279C08K5/20
Inventor 邵峥
Owner NINGBO RUICHENG PACKING MATERIAL
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com