Polymer blends for producing films with a reduced number of defects

一种聚合物、共混物的技术，应用在制备膜片领域，能够解决膜片高缺陷数等问题

Active Publication Date: 2007-09-19
TOPAS ADVANCED POLYMERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But membranes made from this blend have high defect counts

Method used

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  • Polymer blends for producing films with a reduced number of defects
  • Polymer blends for producing films with a reduced number of defects
  • Polymer blends for producing films with a reduced number of defects

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 10

[0105] Example 10 8.33kg 3.2% Exceed 1018CA solution

Embodiment 11

[0106] Example 11 8.33kg 2.7% Dowlex NG5066E solution

Embodiment 12

[0107] Example 12 16.66kg 3.0% Dowlex NG5066E solution

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Abstract

The invention relates to selected polymer blends, which can be used to produce films with a reduced number of defects, in addition to a method for producing said polymer blends. The invention also relates to the use of the inventive polymer blends for producing films.

Description

technical field [0001] The present invention relates to selected polymer blends that can be used to make membranes with reduced defect counts; and also to processes for making the polymer blends. Furthermore, the use of the polymer blends according to the invention for producing membranes is claimed. Background of the invention [0002] Films and moldings made of cyclic olefin copolymers (COC) feature low density, high transparency, low birefringence, extremely low water absorption, and high rigidity, strength, and hardness. [0003] The production of sheets or films from COCs on conventional industrial extrusion equipment such as slotted extruders or smooth-bore extruders often leads to an increased number of defect sites in the sheet, such as so-called gel / fish eyes. These increased defects limit the material's application in certain industrial fields. Other polymers that can be processed into membranes that may have a lower number of defects do not have the good propert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L45/00
CPCY10T428/31913C08L23/0823Y10T428/24661Y10T428/31909Y10T428/1345C08L23/0815Y10T428/2495C08L45/00C08L2666/06C08L23/06
Inventor W·格利茨A-M·绍温霍尔德
Owner TOPAS ADVANCED POLYMERS
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