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Polyurethane resin formable composition, sealing material and hollow fiber membrane module

A polyurethane resin and fiber film technology, which is applied in the field of polyurethane resin formable compositions, can solve the problems of high viscosity of isocyanate components, poor filling performance, polyurethane resin foam, etc., and achieve the effect of improving productivity

Active Publication Date: 2011-12-28
NIPPON POLYURETHANE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when aliphatic isocyanate is used, the viscosity of the isocyanate component becomes high, causing problems such as poor filling properties during molding.
In addition, when a hydroxycarboxylic acid is used, problems such as foaming of the obtained polyurethane resin occur

Method used

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  • Polyurethane resin formable composition, sealing material and hollow fiber membrane module
  • Polyurethane resin formable composition, sealing material and hollow fiber membrane module
  • Polyurethane resin formable composition, sealing material and hollow fiber membrane module

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0084] [Manufacturing example 1: Manufacture of main ingredient (A)]

[0085] A 2 L size four-necked reaction flask was equipped with a thermometer, a stirrer, a nitrogen sealed tube, and a cooling tube, and the inside of the reaction flask was replaced with nitrogen. 141g of MDI-1 and 561g of MDI-2 were put there, and the temperature of the liquid was raised and stirred. When the liquid temperature reaches 50°C, add 298g of the following polyol 1, stir and mix for 3 hours at a temperature of 70°C in a nitrogen atmosphere, and allow it to react to obtain an isocyanate-terminated prepolymer constituting the main ingredient (A) . Hereinafter, this is referred to as "main ingredient (A-1)". The isocyanate group content of the main ingredient (A-1) was 17.5% by mass, and the viscosity at 25° C. was 3000 mPa·s.

manufacture example 2

[0086] [Manufacturing example 2: Manufacture of main ingredient (A)]

[0087] A 2 L size four-necked reaction flask was equipped with a thermometer, a stirrer, a nitrogen sealed tube, and a cooling tube, and the inside of the reaction flask was replaced with nitrogen. 199g of MDI-1 and 505g of MDI-3 were charged therein, and the temperature of the liquid was raised and stirred. When the liquid temperature reaches 50°C, add 296g of the following polyol 5, stir and mix for 3 hours at a temperature of 70°C in a nitrogen atmosphere, and allow it to react to obtain an isocyanate-terminated prepolymer constituting the main ingredient (A) . Hereinafter, this is referred to as "main ingredient (A-2)". The isocyanate group content of the main ingredient (A-2) was 20.0% by mass, and the viscosity at 25°C was 350 mPa·s.

[0088] [Preparation of Hardener (B)]

[0089] Mix carboxylic acid (b1), castor oil and / or castor oil-based modified polyol (b2), and hydroxyl-containing amine compo...

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Abstract

The present invention relates to a polyurethane resin moldable composition, a sealing material using the composition, and a hollow fiber membrane module. Using a carboxylic acid (b1) containing a molecular weight of 200 or more without a hydroxyl group, and castor oil and / or castor oil-based modified polyol (b2) as a hardening agent for the polyol component, diphenylmethylene di Isocyanate and / or diphenylmethylene diisocyanate containing carbodiimide modified form the main agent as the isocyanate component. It is possible to provide a polyurethane-based beam forming material composition that maintains formability and improves productivity.

Description

technical field [0001] The present invention relates to a polyurethane resin moldable composition, a sealing material using the composition, and a hollow fiber membrane module (module). Background technique [0002] In recent years, hollow fiber membrane modules using hollow fibers as separation membranes have been widely used in industrial fields such as water treatment membranes, and medical fields such as blood treatment. Especially in household water purifiers, industrial water purifiers, artificial kidneys, artificial lungs and other applications, the demand has increased significantly. Here, the ends of the hollow fiber membranes are bonded and fixed so that the bundles are made, and as the membrane sealing material used for the bonding and fixing, polyurethane resin ( polyurethane resin), widely known. [0003] As a method of producing a membrane sealing material, the following polyurethane-based sealing bundle material composition is proposed: using, for example, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/78C08G18/36C09K3/10B01D63/02
CPCB01D71/54C08G18/34C08G18/4887C08G18/7657C08G18/7806C08G18/82C08L75/04
Inventor 中岛智大和功二金谷将司
Owner NIPPON POLYURETHANE IND CO LTD