Polyamide resin composition
US-9657159-B2 · May 23, 2017 · US
Molded article comprising polyamide resin composition
US10113054B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10113054-B2 |
| Application number | US-201614994683-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 13, 2016 |
| Priority date | Jan 22, 2015 |
| Publication date | Oct 30, 2018 |
| Grant date | Oct 30, 2018 |
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- Title
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Abstract
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The present invention provides a molded article comprising a polyamide resin composition, wherein (the average concentration of alkali metal and/or alkaline earth metal elements in a region within a depth of 3 μm from the surface of the molded article)/(the average concentration of alkali metal and/or alkaline earth metal elements in a region except for the region within a depth of 3 μm from the surface of the molded article)>2.
First claim
Opening claim text (preview).
What is claimed is: 1. A molded article comprising a polyamide resin composition comprising a polyamide resin and at least one alkali metal and/or alkaline earth metal element mixed therein, wherein (the average concentration of alkali metal and/or alkaline earth metal elements in a region within a depth of 3 μm from the surface of the polyamide resin composition of the molded article)/(the average concentration of alkali metal and/or alkaline earth metal elements in a region of the polyamide resin composition of the molded article except for the region within a depth of 3 μm from the surface of the polyamide resin composition of the molded article)>2. 2. The molded article according to claim 1 , wherein the molded article comprises a lower carboxylate of an alkali metal and/or an alkaline earth metal in a region within a depth of 1 μm from the surface of the polyamide resin composition of the molded article. 3. The molded article according to claim 1 , wherein the molded article comprises a carbonate of an alkali metal and/or an alkaline earth metal in a region within a depth of 10 nm from the surface of the polyamide resin composition of the molded article. 4. The molded article according to claim 1 , wherein the molded article comprises a metal aluminate, and has one or more peaks each in ranges of 0 to 30 ppm, 30 to 60 ppm, and 70 to 100 ppm in solid-state 27Al-NMR measurement. 5. The molded article according to claim 1 , wherein the molded article has Mw of 50000 or higher and Mw/Mn of 3 or higher. 6. The molded article according to claim 1 , wherein the soluble content in hexafluoroisopropanol (HFIP) of a polyamide resin portion contained in the polyamide resin composition is 50% by mass or less of the polyamide resin portion contained in the polyamide resin composition. 7. A molded article comprising a polyamide resin composition comprising a polyamide resin and at least one alkali metal and/or alkaline earth metal element mixed therein, wherein the molded article satisfies the following expression: α/β>2, wherein α represents the average concentration of alkali metal and/or alkaline earth metal elements in a region within a depth of 3 μm from the surface of the polyamide resin composition of the molded article after heat aging treatment at 230° C. for 300 hours or longer, and β represents the average concentration of alkali metal and/or alkaline earth metal elements in a region of the polyamide resin composition of the molded article except for the region within a depth of 3 μm from the surface of the polyamide resin composition of the molded article after heat aging treatment at 230° C. for 300 hours or longer. 8. The molded article according to claim 7 , wherein the molded article comprises a lower carboxylate of an alkali metal and/or an alkaline earth metal in a region within a depth of 1 μm from the surface of the polyamide resin composition of the molded article after heat aging treatment at 230° C. for 300 hours or longer. 9. The molded article according to claim 7 , wherein the molded article contains a carbonate of an alkali metal and/or an alkaline earth metal in a region within a depth of 10 nm from the surface of the polyamide resin composition of the molded article after heat aging treatment at 230° C. for 300 hours or longer. 10. The molded article according to claim 7 , wherein the molded article comprises a metal aluminate, and has one or more peaks each in ranges of 0 to 30 ppm, 30 to 60 ppm, and 70 to 100 ppm in solid-state 27Al-NMR measurement after heat aging treatment at 230° C. for 300 hours or longer. 11. The molded article according to claim 7 , wherein the molded article has Mw of 50000 or higher and Mw/Mn of 3 or higher after heat aging treatment at 230° C. for 300 hours or longer. 12. The molded article according to claim 7 , wherein the soluble content in hexafluoroisopropanol (HFIP) of a polyamide resin portion contained in the polyamide resin composition is 50% by mass or less of the polyamide resin portion contained in the polyamide resin composition after heat aging treatment at 230° C. for 300 hours or longer. 13. The molded article according to claim 1 , wherein the molded article is an automobile part. 14. The molded article according to claim 1 , wherein the molded article is an automobile underhood part. 15. The molded article according to claim 1 , wherein the molded article is a hollow part. 16. The molded article according to claim 7 , wherein the molded article is an automobile part. 17. The molded article according to claim 7 , wherein the molded article is an automobile underhood part. 18. The molded article according to claim 7 , wherein the molded article is a hollow part.
Assignees
Inventors
Classifications
of metals · CPC title
Acids; Salts thereof {(C08K3/16 takes precedence)} · CPC title
Alkali metal carbonates · CPC title
of aluminium · CPC title
- C08K5/175Primary
containing COOH-groups; Esters or salts thereof · CPC title
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Frequently asked questions
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- What does patent US10113054B2 cover?
- The present invention provides a molded article comprising a polyamide resin composition, wherein (the average concentration of alkali metal and/or alkaline earth metal elements in a region within a depth of 3 μm from the surface of the molded article)/(the average concentration of alkali metal and/or alkaline earth metal elements in a region except for the region within a depth of 3 μm from th…
- Who is the assignee on this patent?
- Asahi Kasei Chemicals Corp, Asahi Chemical Ind
- What technology area does this patent fall under?
- Primary CPC classification C08K5/175. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 30 2018 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 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).