Polyamide resin
US-12162985-B2 · Dec 10, 2024 · US
Polyamide and polyamide composition
US9023975B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9023975-B2 |
| Application number | US-201013393604-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 7, 2010 |
| Priority date | Sep 11, 2009 |
| Publication date | May 5, 2015 |
| Grant date | May 5, 2015 |
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Abstract
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[Problem to be Solved] To provide a polyamide having a high melting point, which has excellent strength, toughness, and stability under heating. [Solution] This polyamide is obtained by polymerizing an (a) dicarboxylic acid comprising at least 50 mol % of an alicyclic dicarboxylic acid and a (b) diamine comprising at least 50 mol % of a diamine having a pentamethylenediamine skeleton, wherein the polyamide has a cyclic amino end amount of 30 to 60μ equivalents/g.
First claim
Opening claim text (preview).
The invention claimed is: 1. A polyamide obtained by polymerizing an (a) dicarboxylic acid comprising at least 50 mol % of an alicyclic dicarboxylic acid and a (b) diamine comprising at least 50 mol % of a diamine having a pentamethylenediamine skeleton, wherein the polyamide has a cyclic amino end amount of 30 to 60μ equivalents/g. 2. The polyamide according to claim 1 , wherein the polyamide has a sulfuric acid relative viscosity ηr at 25° C. of 2.3 or…
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Classifications
- C08G69/265Primary
Chemistry & Metallurgy · mapped topic
Cross-Sectional Technologies · mapped topic
- C08G69/26Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9023975B2 cover?
- [Problem to be Solved] To provide a polyamide having a high melting point, which has excellent strength, toughness, and stability under heating. [Solution] This polyamide is obtained by polymerizing an (a) dicarboxylic acid comprising at least 50 mol % of an alicyclic dicarboxylic acid and a (b) diamine comprising at least 50 mol % of a diamine having a pentamethylenediamine s…
- Who is the assignee on this patent?
- Nitto Yu, Shikano Yasukazu, Ieda Shinji, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification C08G69/265. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 05 2015 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).