Method for producing polymer
US-9738742-B2 · Aug 22, 2017 · US
Method for producing polymer for electronic material and polymer for electronic material obtained by the production method
US10766973B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10766973-B2 |
| Application number | US-201615735748-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 15, 2016 |
| Priority date | Jun 22, 2015 |
| Publication date | Sep 8, 2020 |
| Grant date | Sep 8, 2020 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The method for producing a polymer for an electronic material according to the present invention comprises a polymerization step of obtaining a polymer by polymerizing a monomer(s) and a purification step of adding a strong acid having 0 or less pKa to the polymer solution and subsequently performing an ion exchange treatment to reduce the concentration of the metal ion impurities.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing a polymer for an electronic material comprising: a polymerization step of obtaining a polymer by radical polymerizing an oxystyrene-based monomer with a (meth)acrylate-based monomer; and a purification step of adding a strong acid having 0 or less pKa to the polymer solution and subsequently performing an ion exchange treatment to reduce the concentration of metal ion impurities. 2. The method for producing a polymer for an electronic material according to claim 1 , wherein the strong acid is at least one selected from the group consisting of organic sulfonic acid, sulfuric acid, and trifluoroacetic acid. 3. The method for producing a polymer for an electronic material according to claim 1 , wherein the strong acid is at least one organic sulfonic acid selected from the group consisting of trifluoro methanesulfonic acid, methanesulfonic acid, and p-toluenesulfonic acid.
Assignees
Inventors
Classifications
- C08F6/06Primary
Treatment of polymer solutions {(C08F6/001, C08F6/006, C08F6/008, C08F6/02, C08F6/04 take precedence)} · CPC title
- C08F212/24Primary
Phenols or alcohols · CPC title
with heterocyclic compounds · CPC title
- C08F6/02Primary
Neutralisation of the polymerisation mass, e.g. killing the catalyst (short-stopping C08F2/42 ){also removal of catalyst residues} · CPC title
Phenols or alcohols · CPC title
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- What does patent US10766973B2 cover?
- The method for producing a polymer for an electronic material according to the present invention comprises a polymerization step of obtaining a polymer by polymerizing a monomer(s) and a purification step of adding a strong acid having 0 or less pKa to the polymer solution and subsequently performing an ion exchange treatment to reduce the concentration of the metal ion impurities.
- Who is the assignee on this patent?
- Maruzen Petrochem Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08F6/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 08 2020 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).