Unlock instant, AI-driven research and patent intelligence for your innovation.

Stabilized polyethylene material

A technology of polyethylene and polyethylene resin, used in pipelines, preparation of molded products, multimodal polyethylene resins and compositions containing such resins, can solve the problem of no antioxidant system and the like

Inactive Publication Date: 2014-12-10
DOW GLOBAL TECH LLC
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, there is no known antioxidant system that satisfactorily addresses the combination of all these factors for standard polyethylene resins

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Stabilized polyethylene material
  • Stabilized polyethylene material
  • Stabilized polyethylene material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0040] To achieve the addition levels (in ppm) listed in Table 1, the various resin formulations were first prepared by mixing the masterbatches containing the additions with the base resin. For Examples 1-8, the base resin has a density of 0.941 g / cc and a melt index (I 2 ) is 0.85 g / 10 min (measured according to ASTM D-1238, condition E, 190° C. / 2.16 kg) of ethylene / octene resin. For Example 9, the base resin was a density of 0.933 g / cc and a melt index (I 2 ) is a polyethylene resin of 0.7. For Example 10, the base resin was a density of 0.9345 g / cc and a melt index (I 2 ) is a polyethylene resin of 0.6. In Table 1, AO 1 is Irganox TM 1330, hindered phenol antioxidant; MD is a metal deactivator, (Naugard for Examples 1,3,4,6,8 and 9 TM XL1 and Irganox for Examples 2 and 5 TM MD1024); AO2 is Chimassorb TM994, hindered amine antioxidant; AO3 is Irgafos TM 168, phosphite antioxidant; AO4 is Irganox TM 1010, hindered phenol antioxidant; AO5 is Irganox TM 1076, Hi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

Stabilized polyethylene materials which offer an advantageously balanced combination of thermal, mechanical and processing properties, and which maintain their physical properties in chlorinated water environments are disclosed. The materials include an antioxidant system with components to provide extraction resistance in hot water environments and additionally provides oxidation resistance to both chlorine in the water interior of the pipe and oxygen in contact with the pipe's exterior.

Description

[0001] This application is a divisional application of the Chinese patent application with the application number 200480035814.3, the application date is December 3, 2004, and the invention title is "stabilized polyethylene material". technical field [0002] This invention relates to stabilized polyethylene resins, especially stabilized multimodal polyethylene resins and compositions containing such resins. The invention also relates to the use of such resins or compositions, for example for the preparation of shaped articles. The resins and compositions of the present invention are particularly suitable for use in pipes. Background technique [0003] Polyethylene is known for use in shaped articles including pipes. Polyethylene compositions having a multimodal molecular weight distribution (MWD), such as bimodal MWD, can confer clear advantages over unimodal polyethylene or other polyolefins. For example, bimodal polyethylene can combine the good mechanical properties of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/13C08K5/49C08L23/04F16L11/04C08K5/00C08L23/00C08L23/08
CPCC08K5/13C08K5/49C08K2201/014F16L11/06C08L23/04C08K5/1345C08L2203/18C08L23/0815Y10T428/139
Inventor T·H·霍P-M·卡姆D·施拉姆K·塞哈诺比斯
Owner DOW GLOBAL TECH LLC