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Polyolefin-based compositions, adhesives, and related multi-layered structures prepared therefrom

A polyolefin-based, olefin polymer technology, applied in the direction of graft polymer adhesives, adhesive types, adhesives, etc.

Active Publication Date: 2016-11-16
EQUSR CHEM LP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adhering layers of dissimilar resins into multilayer films and sheets is always challenging

Method used

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  • Polyolefin-based compositions, adhesives, and related multi-layered structures prepared therefrom
  • Polyolefin-based compositions, adhesives, and related multi-layered structures prepared therefrom

Examples

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Embodiment

[0162] The following examples serve to demonstrate preferred embodiments of the invention. It should be appreciated by those of skill in the art that the techniques disclosed in the examples which follow represent techniques discovered by the inventors to successfully practice the invention, and thus can be considered preferred modes for its practice. However, those of skill in the art should, given the teachings of the present invention, appreciate that changes can be made in the particular embodiments which are disclosed and still obtain a like or similar result without departing from the spirit and scope of the invention.

[0163] For comparative examples and examples of embodiments of the present invention, the grafted polyolefin was obtained by combining polypropylene impact copolymer (specific gravity: 0.90; melt flow rate: 1.8 g / 10 min; polydispersity index: 9.7) and Maleic anhydride (2% of total weight of feed reactants) sent to COPERION TM ZSK-92 twin-screw extruder...

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Abstract

The invention provides polyolefin-based compositions, adhesives, and related multi-layered structures prepared therefrom. According to the invention, the present disclosure provides a polyolefin-based composition suitable for use as adhesives and / or tie-layer adhesive compositions as well as a multi-layered structure made from and / or containing the polyolefin-based composition. The polyolefin-based composition is made from and / or contains (a) a grafted polyolefin composition, (b) a first polymer composition, (c) a polypropylene-containing blend composition, and (d) optionally, an additives composition having one or more additives.

Description

technical field [0001] The present invention relates to polyolefin based compositions for use as adhesives and / or tie layer adhesive compositions for multilayer structures. In particular, the compositions can be used as adhesives to bond barrier layers to dissimilar substrates. Background technique [0002] Multilayer films and sheets are widely used in food packaging. The number and arrangement of resin layers and the type of resin used may vary depending on the intended application. Polyethylene resin is often included as one of the multiple layers for food contact and sealing properties. Ethylene-vinyl alcohol (EVOH) copolymers and polyamides (nylons) are widely used as oxygen and moisture barriers. Styrenic polymers are often included as structural layers, especially for thermoforming. However, adhering layers of dissimilar resins into multilayer films and sheets has always been challenging. [0003] There is a need for improved tie layer adhesive compositions suita...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/06C08L23/12C09J151/06C09J123/12B32B27/32
CPCC08L2203/16C09J123/14C08L23/14C08L23/16C08L51/06C08L23/10C08L23/02
Inventor M·G·布特罗斯E·柯斯坦提尼C·S·赫兰蒂C·D·李E·马萨拉蒂
Owner EQUSR CHEM LP