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US-2024384050-A1 · Nov 21, 2024 · US
Polyurethane resin composition and hollow fiber membrane module produced using same
US9249298B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9249298-B2 |
| Application number | US-201214128677-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 25, 2012 |
| Priority date | Jun 23, 2011 |
| Publication date | Feb 2, 2016 |
| Grant date | Feb 2, 2016 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The polyurethane resin composition comprises a main agent (I) which comprises an urethane prepolymer (A) with an isocyanate group terminal and a hardener (II) which comprises an urethane prepolymer (B) with a hydroxyl group terminal, wherein the urethane prepolymer (B) with the hydroxyl group is a product of reaction between a polyol ingredient (a) comprising a castor oil-based polyol (a1) and a polyisocyanate (b) can inhibit the hollow fiber membranes from clogging, regardless of the kind thereof, when the composition is used as a binder for hollow fiber membranes.
First claim
Opening claim text (preview).
The invention claimed is: 1. A polyurethane resin composition which comprises a main agent (I) which comprises a urethane prepolymer (A) with an isocyanate group terminal and a hardener (II) which comprises a urethane prepolymer (B) with a hydroxyl group terminal, wherein the urethane prepolymer (B) with the hydroxyl group terminal is a product of reaction between a polyol ingredient (a) and a polyisocyanate (b), and wherein the polyol ingredient (a) comprises a castor oil-based polyol (a1), present in an amount of between 50% and 74.6% by mass of the polyol ingredient (a), and a polyether polyol having 4 to 8 hydroxyl groups (a2), present in an amount of between 25.4% and 40% by mass of the polyol ingredient (a). 2. A bound group of hollow fibers, which is bound by the polyurethane resin composition according to claim 1 . 3. A hollow fiber membrane module wherein the polyurethane resin composition according to claim 1 is used.
Assignees
Inventors
Classifications
Polyureas; Polyurethanes · CPC title
with compounds of group C08G18/36 or hydroxylated esters of higher fatty acids of C08G18/38 · CPC title
- C08G18/4829Primary
Polyethers containing at least three hydroxy groups (C08G18/4833 - C08G18/5096 take precedence) · CPC title
with compounds of C08G18/36 · CPC title
- C08L75/04Primary
Polyurethanes · CPC title
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Frequently asked questions
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- What does patent US9249298B2 cover?
- The polyurethane resin composition comprises a main agent (I) which comprises an urethane prepolymer (A) with an isocyanate group terminal and a hardener (II) which comprises an urethane prepolymer (B) with a hydroxyl group terminal, wherein the urethane prepolymer (B) with the hydroxyl group is a product of reaction between a polyol ingredient (a) comprising a castor oil-based polyol (a1) and …
- Who is the assignee on this patent?
- Hirose Masaharu, Dai Ichi Kogyo Seiyaku Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08G18/4829. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 02 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).