Method for producing polyamide, and polyamide
US-2022389163-A1 · Dec 8, 2022 · US
2-pyrrolidone polymer or copolymer having modified physical properties, and manufacturing method for same
US9238713B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9238713-B2 |
| Application number | US-201214118355-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 22, 2012 |
| Priority date | May 25, 2011 |
| Publication date | Jan 19, 2016 |
| Grant date | Jan 19, 2016 |
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Abstract
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Disclosed is a 2-pyrrolidone polymer or copolymer having optionally substituted methylol groups, and a process for producing the 2-pyrrolidone polymer or copolymer having methylol groups, the process comprising reacting a 2-pyrrolidone polymer or copolymer with an aldehyde.
First claim
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The invention claimed is: 1. A 2-pyrrolidone polymer or copolymer having methylol groups and having a branched structure, wherein the degree of methylolation of the polymer is 4 to 50%. 2. The copolymer according to claim 1 , which is a copolymer of 2-pyrrolidone and a lactam or a lactone. 3. A process for producing a 2-pyrrolidone polymer or copolymer having methylol groups, the process comprising reacting a 2-pyrrolidone polymer with paraformaldehyde or formaldehyde, wherein the polymer has a branched structure, and wherein the degree of methylolation of the polymer is 4 to 50%. 4. The process according to claim 3 , wherein the copolymer is a copolymer of 2-pyrrolidone and a lactam or a lactone. 5. The polymer according to claim 1 , wherein the elongation at break of the polymer is 201 to 492%. 6. The process according to claim 3 , wherein the elongation at break of the polymer is 201 to 492%.
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- What does patent US9238713B2 cover?
- Disclosed is a 2-pyrrolidone polymer or copolymer having optionally substituted methylol groups, and a process for producing the 2-pyrrolidone polymer or copolymer having methylol groups, the process comprising reacting a 2-pyrrolidone polymer or copolymer with an aldehyde.
- Who is the assignee on this patent?
- Kawasaki Norioki, Nakayama Atsuyoshi, Yamano Naoko, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C08G69/24. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 19 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).