Method for producing polyamide resin
US-2016376407-A1 · Dec 29, 2016 · US
Polyamide resin composition, molded article, and method for manufacturing polyamide resin pellet
US11078330B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11078330-B2 |
| Application number | US-201716471799-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 6, 2017 |
| Priority date | Dec 22, 2016 |
| Publication date | Aug 3, 2021 |
| Grant date | Aug 3, 2021 |
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Abstract
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Provided is a polyamide resin composition capable of providing a molded article having an excellent wear resistance while maintaining a high mechanical strength; a molded article; and a method for manufacturing a polyamide resin pellet. The polyamide resin composition includes a polyamide resin and an inorganic filler, wherein the polyamide resin includes diamine-derived constituent units and dicarboxylic acid derived constituent units; 70 mol % or more of the diamine-derived constituent units are derived from 1,4-bis(aminomethyl)cyclohexane; a molar ratio of cis:trans of the 1,4-bis(aminomethyl)cyclohexane is from 35:65 to 0:100; 70 mol % or more of the dicarboxylic acid-derived constituent units are derived from an α,ω-linear aliphatic dicarboxylic acid having from 8 to 12 carbons; and the polyamide resin includes phosphorus atoms in a ratio of from 20 to 100 mass ppm and comprises calcium atoms so as to be phosphorus atoms:calcium atoms of 1:0.3 to 0.7 in a molar ratio.
First claim
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The invention claimed is: 1. A polyamide resin composition comprising a polyamide resin and an inorganic filler, wherein the polyamide resin comprises diamine-derived constituent units and dicarboxylic acid-derived constituent units; 70 mol % or more of the diamine-derived constituent units are derived from 1,4-bis(aminomethyl)cyclohexane; a molar ratio of cis:trans of the 1,4-bis(aminomethyl)cyclohexane is from 35:65 to 0:100; 70 mol % or more of the dicarboxylic acid-derived constituent units are derived from an am-linear aliphatic dicarboxylic acid having from 8 to 12 carbons; and the polyamide resin comprises phosphorus atoms in a concentration of from 20 to 100 mass ppm and comprises calcium atoms so as to be phosphorus atoms:calcium atoms of 1:0.3 to 0.7 in a molar ratio. 2. The polyamide resin composition according to claim 1 , wherein the inorganic filler is an inorganic filler comprising glass as a main component. 3. The polyamide resin composition according to claim 1 , wherein the inorganic filler is glass fiber. 4. The polyamide resin composition according to claim 1 , comprising the inorganic filler in a ratio of from 35 to 65 mass % of the polyamide resin composition. 5. The polyamide resin composition according to claim 1 , which is a pellet. 6. A molded article obtainable by molding the polyamide resin composition described in claim 1 . 7. The molded article according to claim 6 , wherein the molded article is a sliding part. 8. A method for manufacturing a polyamide resin pellet, the method comprising: adding an inorganic filler to a polyamide resin to form a mixture; and melt-kneading the mixture, wherein the polyamide resin comprises diamine-derived constituent units and dicarboxylic acid-derived constituent units; 70 mol % or more of the diamine-derived constituent units are derived from 1,4-bis(aminomethyl)cyclohexane; a molar ratio of cis:trans of the 1,4-bis(aminomethyl)cyclohexane is from 35:65 to 0:100; 70 mol % or more of the dicarboxylic acid-derived constituent units are derived from an α,ω-linear aliphatic dicarboxylic acid having from 8 to 12 carbons; and the polyamide resin comprises phosphorus atoms in a concentration of from 20 to 100 mass ppm and comprises calcium atoms in a molar ratio of phosphorus atoms:calcium atoms of 1:0.3 to 0.7.
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- What does patent US11078330B2 cover?
- Provided is a polyamide resin composition capable of providing a molded article having an excellent wear resistance while maintaining a high mechanical strength; a molded article; and a method for manufacturing a polyamide resin pellet. The polyamide resin composition includes a polyamide resin and an inorganic filler, wherein the polyamide resin includes diamine-derived constituent units and d…
- Who is the assignee on this patent?
- Mitsubishi Gas Chemical Co
- What technology area does this patent fall under?
- Primary CPC classification C08G69/26. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 03 2021 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).