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(Meth)acrylate copolymer and method for producing same
US9388263B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9388263-B2 |
| Application number | US-201314426293-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 2, 2013 |
| Priority date | Oct 3, 2012 |
| Publication date | Jul 12, 2016 |
| Grant date | Jul 12, 2016 |
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Abstract
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Provided is a copolymer having excellent calcium ion trapping ability, calcium carbonate dispersing capacity, and gel resistance. A (meth)acrylic acid-based copolymer contains, as essential structural units, a structural unit (a) derived from a monomer represented by the following formula (1) in an amount of 2% by mole or more and 9% by mole or less, and a structural unit (b) derived from a (meth)acrylic acid (salt) in an amount of 91% by mole or more and 98% by mole or less, relative to 100% by mole of structural units derived from all monomers, wherein the copolymer contains a sulfonic acid (salt) group at least one end of the main chain and has a weight average molecular weight of 7000 to 100000, wherein R 2 represents a hydrogen atom or a methyl group; and X and Y each independently represent a hydroxyl group or a sulfonic acid (salt) group (at least one of X and Y represents a sulfonic acid (salt) group).
First claim
Opening claim text (preview).
The invention claimed is: 1. A (meth)acrylic acid-based copolymer comprising, as essential structural units: a structural unit (a) derived from a monomer represented by the following formula (1) in an amount of 2% by mole or more and 9% by mole or less relative to 100% by mole of structural units derived from all monomers; and a structural unit (b) derived from a (meth)acrylic acid or a salt thereof in an amount of 91% by mole or more and 98% by mole or less relative to 100% by…
Assignees
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Classifications
Chemistry & Metallurgy · mapped topic
- C08F220/06Primary
Chemistry & Metallurgy · mapped topic
- C02F5/10Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9388263B2 cover?
- Provided is a copolymer having excellent calcium ion trapping ability, calcium carbonate dispersing capacity, and gel resistance. A (meth)acrylic acid-based copolymer contains, as essential structural units, a structural unit (a) derived from a monomer represented by the following formula (1) in an amount of 2% by mole or more and 9% by mole or less, and a structural unit (b) derived from a (me…
- Who is the assignee on this patent?
- Nippon Catalytic Chem Ind
- What technology area does this patent fall under?
- Primary CPC classification C08F220/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 12 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).