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

Polypropylene composition and thermoformed sheet thereof

A technology of polypropylene composition and polypropylene homopolymer, which is applied in the field of preparing thermoformed products including polypropylene composition, and can solve the problems of widening polypropylene processing window and the like

Active Publication Date: 2018-03-27
TOTAL RES & TECH FELUY
View PDF24 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, all efforts to broaden the processing window of polypropylene in thermoforming have so far been unsuccessful

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 and thermoformed sheet thereof
  • Polypropylene composition and thermoformed sheet thereof
  • Polypropylene composition and thermoformed sheet thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0217] Test Methods:

[0218] Density is measured according to the method of standard ISO 1183 at a temperature of 23°C.

[0219] The melt flow index (MFI) of polypropylene or a composition is measured according to the method of standard ISO 1133, condition M at 230°C and under a load of 2.16 kg.

[0220] The total ethylene content (wt% C2) relative to the total weight of the propylene polymer and the mole fraction of ethylene comonomer in a sequence of length one relative to the comonomer content are calculated by 13 C NMR analysis based on propylene-based polyolefin 13 State of the art determination of C NMR analysis.

[0221] 13 C NMR analysis is performed under conditions such that the signal intensity in the spectrum is proportional to the total number of contributing carbon atoms in the sample. Such conditions are well known to the skilled person and include, for example, sufficient relaxation times and the like. In practice, the strength of a signal is obtained f...

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
melt flow indexaaaaaaaaaa
melt flow indexaaaaaaaaaa
melt flow indexaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a polypropylene composition for thermoforming comprising: from 50 % by weight to at most 90 % by weight of a polypropylene A, wherein polypropylene A is a polypropylene random copolymer, based on the total weight of the polypropylene composition; and from 10 % by weight to at most 50 % by weight of a polypropylene B, wherein polypropylene B is a polypropylene homopolymer, based on the total weight of the polypropylene composition; wherein the melt flow index of polypropylene B is at most 1.0 g / 10min, as measured according to the method of standard ISO 1133, condition M, at 230 DEGC and under a load of 2.16 kg; and wherein the ratio of the melt flow index of polypropylene A to the melt flow index of polypropylene B is at least 80.

Description

technical field [0001] The present invention relates to polypropylene compositions. The present invention relates to a process for the preparation of polypropylene compositions. The present invention relates to thermoformed articles comprising polypropylene compositions. The present invention relates to a process for the preparation of thermoformed articles comprising polypropylene compositions. Background technique [0002] Polystyrene is often used to make containers for dairy products such as for yogurt and puddings. Polystyrene containers are typically formed using a thermoforming process known as "form, fill, and seal" (FFS), in which the container is formed, The filling of the product, and the sealing of the container with the cap are carried out on the same production line. Polystyrene has the advantage that it is flexible enough that it can be easily thermoformed into cups or containers. At the same time, it maintains a certain rigidity, which allows multiple cu...

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 Applications(China)
IPC IPC(8): C08L23/14
CPCC08L23/142C08L2203/30C08L2205/02C08L23/12C08F10/02C08J5/18C08F2500/12B29C51/02B29K2023/12B29K2105/256C08J3/005C08J2323/14C08J2423/12C08L23/14C08L2205/025
Inventor P.洛德菲尔M.杜弗雷诺伊J.迪比松A.布法德C.布卡利迪斯
Owner TOTAL RES & TECH FELUY