Check patentability & draft patents in minutes with Patsnap Eureka AI!

Polypropylene composition for extrusion as laminated film for automotive interior articles

A technology of polypropylene composition and propylene, which is applied in the field of polypropylene composition and injection-molded polypropylene products, and can solve the problems of gate white halo, tiger stripes, mechanical properties adjustment and rheological properties, etc.

Pending Publication Date: 2022-05-27
BOROUGE COMPOUNDING SHANGHAI
View PDF16 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the rheological properties of polypropylene, unstable flow during injection molding can lead to surface appearance defects such as tiger stripes, gloss differences, and gate whitening
[0003] While overcoming these disadvantages has long been a goal of the polypropylene development field, it has been difficult to properly tune the rheological properties without adversely affecting the mechanical properties of the article

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polypropylene composition for extrusion as laminated film for automotive interior articles
  • Polypropylene composition for extrusion as laminated film for automotive interior articles
  • Polypropylene composition for extrusion as laminated film for automotive interior articles

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0092] Preparation process for propylene random copolymer (R-PP)

[0093] The polymerization system used to prepare the propylene random copolymer (R-PP) may comprise one or more conventionally stirred slurry reactors and / or one or more gas phase reactors. Preferably, the reactor used is selected from the group of loop and gas phase reactors, and in particular the process uses at least one loop reactor. Multiple reactors of each type can also be used, such as one loop reactor and two or three gas phase reactors in series, or two loop reactors and one or two gas phase reactors in series.

[0094] Preferably, the process also includes pre-polymerization with a selected catalyst system comprising a Ziegler-Natta procatalyst, an external donor and a cocatalyst, as described in detail below.

[0095] In a preferred embodiment, the prepolymerization is carried out as a bulk slurry polymerization in liquid propylene, ie the liquid phase mainly comprises propylene with small amounts ...

Embodiment

[0193] 1. Definition / measurement method

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

PropertyMeasurementUnit
The average particle sizeaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a polypropylene composition comprising a propylene random copolymer and an elastomeric ethylene random copolymer, a film comprising said polypropylene composition and an injection molded polypropylene article laminated from said film.

Description

technical field [0001] The present invention relates to a polypropylene composition comprising a propylene random copolymer and an elastomeric ethylene random copolymer, a film comprising the polypropylene composition, and an injection-molded polypropylene article laminated from the film. Background technique [0002] Polypropylene, due to its good balance of mechanical properties, including stiffness and impact strength, is one of the main polymer materials used in the manufacture of automotive components. Due to the high complexity available on a large scale, these automotive parts are usually obtained by injection moulding. While polypropylene is the polymer of choice for automotive exterior and interior components, the performance of most polypropylene grades needs to be improved for injection-molded interior parts, where surface properties and appearance are critical. Due to the rheological properties of polypropylene, unstable flow during injection molding can lead to...

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
IPC IPC(8): C08L23/14C08L23/08
CPCC08L23/14C08L2203/16C08L23/0815
Inventor 周信张怡赵品麟
Owner BOROUGE COMPOUNDING SHANGHAI
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