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Polymer composition for improved grade plastics from recycled material

A composition and polymer technology, applied in recycling technology, plastic recycling, educts, etc., can solve the problems of low impact strength, poor consistency, unstable mechanical properties, etc., to increase impact strength and stiffness, increase MFR , the effect of reducing demand

Pending Publication Date: 2021-12-07
QCP HOLDING BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Another problem with using recycled PP and talc polymer compositions, especially from recycled packaging, is the variability and poor consistency of the polymer in the feed
Therefore, this variability and poor consistency is also found in recycled pellets or flakes and manufactured articles
This variability and poor consistency of the polymer leads to unsightly surfaces and unstable mechanical properties of the final product
At the same time, the use of said pellets in injection molding processes is limited or prevented by at least one of the following drawbacks: extreme brittleness, low impact strength and low stiffness of pellets or flakes and products obtained from recycling

Method used

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  • Polymer composition for improved grade plastics from recycled material

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0073] In a preferred embodiment, the polymer composition comprises 50-90 wt% recycled polypropylene, 10-50 wt% talc and 0-10 wt% additives; wherein the talc has a D50 of less than 4 microns (ISO 13317-3) , and wherein the additive is selected from polyethylene (PEs), maleic anhydride grafted PEs (PE-MAs), maleic anhydride grafted PPs (PP-MAs), stabilizers, peroxides, calcium oxide (CaO) or colorants agent.

[0074] In another embodiment, the polymer composition comprises 55-85 wt% recycled polypropylene, 10-50 wt% talc and 0-10 wt% additives; wherein the talc has a D50 of less than 4 microns (ISO 13317-3), and wherein the additive is selected from polyethylene (PEs), maleic anhydride grafted PEs (PE-MAs), maleic anhydride grafted PPs (PP-MAs), stabilizers, peroxides, calcium oxide (CaO) or colorants .

[0075] In another embodiment, the polymer composition comprises 60-80 wt% recycled polypropylene, 10-50 wt% talc and 0-10 wt% additives; wherein the talc has a D50 of less t...

Embodiment

[0100] Quality Testing and Standards

[0101] For quality testing, samples are taken during processing and from the final product. Melt mass flow rate (MFR) was measured on days 3 and 10 of aging. MFR and melt volume flow rate (MVR) were evaluated using ISO 1133-1:2011, 2.16 kg, T=230°C.

[0102] Cold xylene solubles (CXS) are measured using ISO 16152:2005, T = 25°C.

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Abstract

A polymer composition consisting of: a) 50-96 wt% of a recycled polypropylene; b) 4-50 wt% of talcum; c) 0-10 wt% of additives; wherein the additives are selected from the group of PEs, PE-MAs, PP-MAs, stabilizers, peroxides, CaOs or colorants; wherein the talcum has a D50 of less than 4 micron (IS013317-3) and wherein the wt% is relative to the total weight of the polymer composition.

Description

technical field [0001] The present invention relates to an improved polymer composition containing a large amount of recycled polypropylene (PP) and a large amount of preferably unmodified talc, and the use of the polymer composition in the manufacture of articles, produced from the polymer composition Articles and methods of making the polymer compositions. Background technique [0002] The ubiquity of plastic packaging and the importance of environmental policy have led to the growing importance of recyclable plastic materials. Recycling of paper, textiles, glass or metal is already taking place on a large scale, either through separate collection or sorting of recyclables. The recycling of plastic waste and the reuse of plastics are also increasing. [0003] Replacing virgin polymer components is considered the only way to solve the global plastic waste problem, stop the depletion of natural resources and promote a circular economy. [0004] To date, recycled polymer c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/04C08J11/06
CPCC08J11/06C08J11/04C08J2323/12Y02P20/143
Inventor F·E·J·埃塞斯M·H·M·恩克沃特范M·P·A·霍特曼J·维尼里乌斯
Owner QCP HOLDING BV
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