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Compatible heterogeneous polymer blends

A technology of blends and copolymers, applied in the field of compatible heterophasic polymer blends, can solve problems such as poor mechanical properties

Inactive Publication Date: 2020-10-27
BOREALIS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] As mentioned above, most of the thermoplastics used (such as PE and PA) are immiscible with each other due to the large size of the macromolecules and the difference in polarity, so mechanical recycling of this material may result in a minimum Adhesive blends, and thus poor mechanical properties of the final product

Method used

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  • Compatible heterogeneous polymer blends
  • Compatible heterogeneous polymer blends
  • Compatible heterogeneous polymer blends

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0184] The catalyst has been prepared according to Example 1 of WO 2004 / 000933

[0185] polymerization

[0186] Component (A) was prepared in a pilot scale multi-stage reactor system comprising a loop reactor and a gas phase reactor. A prepolymerization step is performed before the actual polymerization step. Using a polymerization catalyst prepared according to Example 1 of WO2004 / 000933 and triethylaluminum as a cocatalyst, at 50 dm 3 The prepolymerization stage is carried out in a slurry at a pressure of about 65 bar at about 80° C. in a loop reactor.

[0187] The molar ratio of aluminum of the promoter to titanium of the catalyst was about 20. Ethylene (200g of C 2 ) / (1g / catalyst) ratio feed. Using propane as the diluent, and taking the MFR of the prepolymer 2 Hydrogen was fed in an amount adjusted to about 10 g / 10 min. The resulting slurry was transferred together with the pre-polymerized catalyst and triethylaluminum co-catalyst to the actual polymerization step, ...

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Abstract

Compatible heterophasic polymer blends of polyethylene and polyamide, wherein the matrix of the blend comprises polyethylene, which is a specific linear low density polyethylene in natural and / or recycled form, optionally with compatibilizer A combination of agents wherein preferably the polyamide of the compatible heterophasic blend is a post-consumer (ie recycled) polyamide which may optionally contain at least one additional polymer such as polyethylene.

Description

[0001] illustrate [0002] The present invention relates to compatible heterophasic polymer blends of polyethylene and polyamide, wherein the matrix of the blend comprises polyethylene, which is a specific linear low density polyethylene in natural or recycled form, optionally in combination with Composite combination. [0003] In a preferred embodiment, the polyamide of the compatible heterophasic blend is a post-consumer (ie recycled) polyamide, which may optionally contain at least one additional polymer, such as polyethylene. Such recycled polyamide may originate from a multilayer film consisting of polyolefin (eg polyethylene) as the main component and a polyamide barrier layer. Background technique [0004] Compatible polyamide (PA) / polyethylene (PE) blends are of particular interest. Polyamides generally exhibit good strength and resistance to hydrocarbon solvents, while polyethylene contributes low-temperature toughness and low moisture absorption, so new combinatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/04
CPCC08L23/06C08L23/0815C08L51/06C08L77/00C08L2205/025C08L2205/035C08F210/16C08F4/6555C08F2/001C08F210/08C08F2500/07C08F2500/12C08F4/025C08F4/6492
Inventor L·曼泰雷A·努米拉-帕卡里宁A·奥利凯宁M·佩尔托沃里J·哈尔蒂凯宁
Owner BOREALIS AG