Hollow fiber membrane

A fiber membrane, hollow technology, applied in the direction of fiber treatment, fiber chemical characteristics, membrane, etc., can solve the problem of efficiency reduction

Pending Publication Date: 2022-03-18
LUBRIZOL ADVANCED MATERIALS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Current commercial membranes are made of materials that experience reduced or lost efficienc

Method used

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  • Hollow fiber membrane
  • Hollow fiber membrane
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Examples

Experimental program
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Embodiment

[0095] Hollow fiber membranes were prepared from the coating solutions shown in Table 1 below.

[0096]

[0097] A coating solution was prepared by dissolving chlorinated polyvinyl chloride (CPVC) in N-methyl-2-pyrrolidone (NMP). The CPVC was weighed and added to the NMP at 55°C for 16 hours with continuous stirring. After dissolving the CPVC using this method, additional formulation additives were added at 60° C. for 4 hours using the same continuous stirring conditions.

[0098] In order to manufacture hollow fiber membranes from the above coating solution, typical hollow manufacturing equipment is used for the manufacturing process. The equipment consists of two reservoirs, a spinneret, a water bath and a winding unit. Fully formulated coating solution and drilling fluid are placed in separate reservoirs. The two fluids are pumped through a spinneret die that has channels cut into it for the flow of the coating fluid and the drilling fluid. This spinneret can create ...

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Abstract

The disclosed technology relates to hollow fiber membranes prepared from a coating solution comprising a vinyl chloride polymer (e.g., chlorinated polyvinyl chloride) and a thermoplastic polyurethane.

Description

Background technique [0001] The disclosed technology relates to hollow fiber membranes prepared from a composition comprising a vinyl chloride polymer, such as chlorinated polyvinyl chloride, and thermoplastic polyurethane. [0002] Membrane separation technology is an energy-saving and efficient physical separation technology. Membranes are used in a wide variety of applications, from drinking water purification to industrial wastewater purification. Current commercial membranes are made of materials that reduce or lose efficiency when exposed to harsh chemicals, such as the bleach solutions used to clean purification systems. Therefore, the market demands stable, chemically and temperature resistant membranes. Contents of the invention [0003] Accordingly, the disclosed technology addresses the problem of chemical degradation of hollow fiber membranes by providing hollow fiber membranes comprising a composition comprising polyvinyl chloride polymer and thermoplastic pol...

Claims

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Application Information

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IPC IPC(8): B01D71/54B01D71/82C08L39/06C08L75/08B01D69/08B01D67/00C08L27/24B01D69/02B01D71/30C08L71/02C08L75/06
CPCB01D71/54B01D71/82C08L39/06C08L75/08B01D69/08B01D67/0011C08L27/24B01D69/02B01D71/30C08L71/02C08L75/06C08L2205/025C08L2205/03B01D2323/18C08L2205/035D01F1/10D01F6/94D01F6/48B01D2325/30B01D2323/12D01D5/24B01D2325/22D01D5/247B01D67/00111B01D69/087
Inventor K·罗伊M·D·朱利叶斯D·纳米克C·D·祖克
Owner LUBRIZOL ADVANCED MATERIALS INC
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