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Polyethylene additive compositions and articles made from same

A technology of polymers and compositions, applied in transportation and packaging, mechanical equipment, pipes, etc., can solve problems such as reduced service life

Inactive Publication Date: 2014-06-25
CHEVRON PHILLIPS CHEMICAL CO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This useful life can be significantly reduced when these same articles are used in applications that expose them to chlorinated water (e.g., drinking water)

Method used

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  • Polyethylene additive compositions and articles made from same
  • Polyethylene additive compositions and articles made from same
  • Polyethylene additive compositions and articles made from same

Examples

Experimental program
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Embodiment approach

[0013] It should be understood at the outset that, although an exemplary implementation of one or more embodiments is provided below, the disclosed systems and / or methods can be implemented using any number of techniques, now known or in existence. The disclosure should not be limited in any way to the exemplary implementations, drawings, and techniques illustrated below, including the exemplary designs and implementations illustrated and described herein, but rather within the scope of the appended claims and their equivalents Changes are made across the entire range.

[0014] To the extent that any definition or usage provided by any document incorporated herein by reference conflicts with the definition or usage provided herein, the definition or usage provided herein controls.

[0015] The terms "polymer", "polymer resin", "polyolefin", "polyolefin resin" and the like are used herein to cover any homopolymer of an olefin monomer or an olefin monomer with one or more comono...

Embodiment 1

[0081] The effect of AID on the stability of tubes prepared from CWS-PC of the type described herein was investigated. Two sample compositions were prepared and tested for their ability to resist degradation when exposed to a chlorine source. All samples contain HP132 is used as the matrix resin. HP132 high density polyethylene is commercially available from Chevron Phillips Chemical Company LP. Sample 1 except Besides HP132, it also contains 0.2wt.% IRGANOX1010, 0.2wt.% IRGAFOS168, 0.03wt.% fatty acid salt and 0.04wt.% VITON FREEFLOW Z200 processing aid. Sample 2 except In addition to HP132, it also contains 0.2wt.% IRGANOX1010, 0.2wt.% IRGAFOS168, 0.03wt.% fatty acid salt, 0.04wt.% VITON FREEFLOW Z200 and 0.75wt.% ZnO. IRGANOX 1010 phenolic primary antioxidant for processing and long-term heat stabilization is a sterically hindered phenolic antioxidant, and IRGAFOS 168 is a hydrolytically stable phosphate processing stabilizer, both commercially available. Table 1 ...

Embodiment 2

[0102] The effect of ZnO concentration on the oxidation induction time of CWS-PCs of the type described herein was investigated. Determination of the OIT of the plaque (plaque) prepared by CWS-PC and in Figure 4 given in.

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Abstract

A method comprising forming a polymeric composition by adding zinc oxide to a polymer wherein a pipe formed from the polymeric composition displays a time to failure as determined in accordance with ASTM F2263-07(E1) that is increased by greater than about 25% when compared to an otherwise similar pipe formed from a polymeric composition lacking zinc oxide. A pipe comprising polyethylene and greater than about 0.5 wt.% zinc oxide having a time to failure as determined in accordance with ASTM F2263-07(E1) that is at least about 25% greater than an otherwise similar pipe prepared in the absence of zinc oxide. A method comprising forming a composition comprising a polymer and zinc oxide into an article, and testing the structural integrity of the article when exposed to chlorinated water wherein the zinc oxide is present in an amount of from about 500 ppm to about 10000 ppm.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Application No. 61 / 532,879, entitled "Polyethylene Additive Compositions and Articles Made from Same," filed September 9, 2011, This application is hereby incorporated by reference in its entirety. technical field [0003] The present disclosure generally relates to improved polymer compositions. More particularly, the present disclosure relates to polymer compositions exhibiting improved resistance to degradation. Background technique [0004] Articles made from polymer compositions can have a life expectancy of 50 to 100 years in some applications. This useful life can be significantly reduced when these same articles are used in applications that expose them to chlorinated water (eg, drinking water). Accordingly, there is a need for polymer compositions that exhibit improved service life when exposed to chlorinated water. Contents of the invention [0005] D...

Claims

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Application Information

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IPC IPC(8): C08K3/22C08L23/04F16L9/00F16L9/12
CPCF16L9/127C08K3/22F16L9/12C08K2003/2296C08L23/0815C08L23/04Y10T428/139
Inventor E·M·拉尼尔B·豪格尔
Owner CHEVRON PHILLIPS CHEMICAL CO LP
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