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Polymer composition for improved grade plastics from recycled material

A composition and polymer technology, applied in the field of polymer compositions, can solve the problems of low impact strength, poor consistency, unstable mechanical properties, etc., and achieve the effects of increasing MFR, reducing demand, and increasing impact strength and stiffness

Active Publication Date: 2021-12-14
QCP HOLDING BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Another problem with using recycled polyolefin 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
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Effect test

Embodiment approach

[0108] In a preferred embodiment, the polymer composition comprises 75-90 wt% recycled polypropylene, 0.1-1.9 wt% styrene ethylene butylene styrene block copolymer, 1-20 wt% polyolefin elastomer and 2-20 wt% talc.

[0109] In another embodiment, the polymer composition comprises 80-86 wt% recycled polypropylene, 0.5-1.5 wt% styrene ethylene butylene styrene block copolymer, 2-15 wt% polyolefin elastomer and 3 - 10 wt% talc.

[0110] In another embodiment, the polymer composition is preferably used for injection molding of articles.

[0111] The polymer composition according to the present invention may further comprise optional components other than the aforementioned components of the polymer composition, such as additives, wherein the sum of the aforementioned components and optional components is 100% by weight of the total polymer composition .

[0112] Accordingly, the present invention relates to polymer compositions consisting of the aforementioned components and opt...

Embodiment

[0118] Quality Testing and Standards

[0119] 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. For POE, MFR and MVR are evaluated using ISO 1133-1:2011 at 190°C and 2.16kg.

[0120] Cold xylene solubles (CXS) are measured using ISO 16152:2005, T = 25°C.

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Abstract

A polymer composition comprising: a. 75-90 wt% of a recycled polypropylene; b. 1-20 wt% of a polyolefin elastomer (POE); c. 0-10 wt% of a styrene ethylene butylene styrene block copolymer (SEBS); d. 2-20 wt% of talcum; wherein the amount of POE and SEBS is at least 3.5 wt%, preferably between 5 and 20 wt%, 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 comprising a substantial amount of recycled polypropylene (PP), the use of the polymer composition in the manufacture of articles, articles made from the polymer composition and the preparation of the polymer composition Methods. Background technique [0002] The ubiquity of plastic packaging and the importance of environmental policy has led to the growing importance of recyclable plastic materials. [0003] Recycling of paper, textiles, glass or metal is already done on a large scale, either through separate collection or sorting of the recyclate. Recycling of plastic waste and reuse of plastics are also increasing. [0004] Substitution of 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. [0005] To date, recycled polymer compositions obtained in the form of flakes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12
CPCC08L23/12C08L2207/20C08L23/0815C08L53/02C08K3/34B29C45/0001B29K2023/12B29K2105/26C08L2203/30C08L2205/025C08L2205/03
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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