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Method for producing cationic surface sizing agent, and sizing agent obtained by method
US9303361B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9303361-B2 |
| Application number | US-201114007917-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 18, 2011 |
| Priority date | Mar 29, 2011 |
| Publication date | Apr 5, 2016 |
| Grant date | Apr 5, 2016 |
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Abstract
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The present invention relates to a method for producing a cationic surface sizing agent, and contains a first step of obtaining a copolymer (A) by solution-polymerizing a monomer mixture which contains a monomer having a tertiary amino group (a) in the amount of 15 to 45% by weight, a (meth)acrylic acid ester (b) in the amount of 15 to 85% by weight, and styrenes (c) in the amount of 0 to 70% by weight in the presence of a chain transfer agent; a second step of obtaining a copolymer (B) by polymerizing the copolymer (A) and a nonionic hydrophilic monomer (d); a third step of obtaining a copolymer (C) by polymerizing the copolymer (B) and a hydrophobic monomer (e) in the absence of a surfactant; and a fourth step of obtaining a quaternary ammonium salt of the copolymer (C) by quaternizing a tertiary amino group present in the copolymer (C).
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing a cationic surface sizing agent comprising a first step of obtaining a copolymer (A) by solution-polymerizing a monomer mixture which comprises a monomer having a tertiary amino group (a) in the amount of 15 to 45% by weight, a (meth)acrylic acid ester (b) in the amount of 15 to 85% by weight, and styrenes (c) in the amount of 0 to 70% by weight in the presence of a chain transfer agent; a second step of obtaining a copolymer (B)…
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Classifications
Textiles & Paper · mapped topic
Textiles & Paper · mapped topic
Textiles & Paper · mapped topic
- D21H21/16Primary
Textiles & Paper · mapped topic
Textiles & Paper · mapped topic
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- What does patent US9303361B2 cover?
- The present invention relates to a method for producing a cationic surface sizing agent, and contains a first step of obtaining a copolymer (A) by solution-polymerizing a monomer mixture which contains a monomer having a tertiary amino group (a) in the amount of 15 to 45% by weight, a (meth)acrylic acid ester (b) in the amount of 15 to 85% by weight, and styrenes (c) in the amount of 0 to 70% b…
- Who is the assignee on this patent?
- Sodeyama Takuji, Hayashi Yoko, Inaoka Kazushige, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification D21H21/16. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Apr 05 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).