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Use of acid scavengers for increasing the resistance of polyolefin compositions to water containing disinfectants

A technology of acid scavenger and composition, applied in rigid pipes, oxidized water/sewage treatment, mechanical equipment, etc., can solve problems such as adverse effects of migration behavior

Active Publication Date: 2017-09-19
BOREALIS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, other less stable additive compounds may decompose into compounds that easily diffuse through the polymer matrix, thus having an adverse effect on migration behavior
Furthermore, it must also be taken into account that the improvement of the migration behavior cannot be obtained at the expense of the stability of the polymer matrix

Method used

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  • Use of acid scavengers for increasing the resistance of polyolefin compositions to water containing disinfectants
  • Use of acid scavengers for increasing the resistance of polyolefin compositions to water containing disinfectants
  • Use of acid scavengers for increasing the resistance of polyolefin compositions to water containing disinfectants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0213] Measurement methods

[0214] Chlorine Dioxide Resistance

[0215] The compositions to be tested were formed into pipes having an outer diameter of 25 mm, a wall thickness of 2.3 mm and a length of 1 m by means of a Battenfeld extruder for PE material.

[0216] The extrusion conditions are as follows. Melting temperature: 213°C, torque 42-45%, screw speed 27rpm, output 19kg / h.

[0217] Use the following temperature profile for pipe extrusion:

[0218]

[0219] The pipes were subjected to water containing chlorine dioxide at a concentration of 1 mg / l + / −0.05 at a pressure of 0.6 MPa and a temperature of 40°C. The water flow rate was 200 liters / hour. The concentration of chlorine dioxide is monitored and controlled during the measurement period.

[0220] Reverse bend back test (RBBT)

[0221] In this test, pipe samples subjected to the chlorine dioxide test above for 270 days were subjected to the following procedure:

[0222] The reverse bendback test is a...

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Abstract

The present invention relates to the use of acid scavengers for increasing the resistance of polyolefin compositions to water containing disinfectants. The present application further relates to a method for transporting disinfectant-containing water, the method comprising the step of transporting the water through a pipeline comprising a polyolefin composition comprising an acid scavenger.

Description

technical field [0001] The present invention relates to the use of acid scavengers for increasing the resistance of polyolefin compositions to water containing disinfectants. The present application further relates to a method for transporting disinfectant-containing water, the method comprising the step of transporting the water through a pipeline comprising a polyolefin composition comprising an acid scavenger. Background technique [0002] New advances in the manufacture and processing of polymers have enabled plastics to be used in nearly every aspect of modern life. Among many other applications, polyolefins are used to prepare pipes, fittings or storage containers for drinking water distribution systems. In the following disclosure, all features and effects used for the pipes are also used for the fittings and storage containers, even if not specifically stated. In order to ensure the good quality of drinking water intended for human consumption, disinfection means a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K3/22C08K3/26C08K5/00C08K5/098C08K5/13C08K5/1545C08K5/51
CPCC08K3/22C08K5/098C08K5/13C08K5/1545C08K5/5393C08K5/1345C08L23/02C08K3/26C08K5/00C08K5/51C08L23/00F16L9/12C02F1/76F16L57/02
Inventor 托马斯·耶特贝里杰伦·欧德科克弗朗西斯·科斯塔安·图安·特兰
Owner BOREALIS AG