Method for producing polyamides by means of a spray nozzle arrangement for the collision of spray jets
US-2016325265-A1 · Nov 10, 2016 · US
Process for producing moldings
US8957180B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8957180-B2 |
| Application number | US-201213588484-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 17, 2012 |
| Priority date | Aug 23, 2011 |
| Publication date | Feb 17, 2015 |
| Grant date | Feb 17, 2015 |
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Abstract
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The present invention relates to a process for producing moldings comprising (A) at least one lactam, (B) at least one activator, and (C) at least one catalyst, where (A) to (C) proceed through treatments comprising a) mixing of (A), (B), and (C), b) metering of (A), (B), and (C) into an apparatus for producing mixture droplets, and producing mixture droplets, and c) depositing the mixture droplets comprising (A), (B), and (C) on a belt, and d) producing moldings.
First claim
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The invention claimed is: 1. A process for producing moldings from a mixture comprising (A) at least one lactam, (B) at least one catalyst, (C) at least one activator, and (D) optionally at least one additional substance, wherein the process proceeds through treatments comprising a) mixing of (A), (B), and (C), b) metering of the mixture into an apparatus for producing mixture droplets comprising (A), (B), and (C) and producing mixture droplets, c) depositing the mixture droplets on a belt, and d) producing moldings, wherein the mixture droplets on the belt in step d) are heated to a temperature from 130 to 250° C. to produce moldings. 2. The process according to claim 1 , wherein the steps a), b), and c) are conducted independently of one another at a temperature which is in the range from the melting point of the highest-melting-point lactam comprised in the mixture to 100° C. above the melting point of the highest-melting-point lactam comprised in the mixture. 3. The process according to claim 1 , where the mixture in droplets which become moldings on the belt in step d) have a residence time of from 20 sec to 20 min on the belt in step d). 4. The process according to claim 1 , wherein the longest axis of the moldings is in the range from 0.05 to 15 mm and the shortest axis of the moldings is in the range from 0.05 to 15 mm. 5. The process according to claim 1 , wherein the molding consists essentially of a polyamide having a weight-average molar mass (Mw) of from 50,000 to 1,000,000 g/mol. 6. A molding produced by the process of claim 1 .
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- What does patent US8957180B2 cover?
- The present invention relates to a process for producing moldings comprising (A) at least one lactam, (B) at least one activator, and (C) at least one catalyst, where (A) to (C) proceed through treatments comprising a) mixing of (A), (B), and (C), b) metering of (A), (B), and (C) into an apparatus for producing mixture droplets, and producing mixture droplets, and c) depositing the mixture drop…
- Who is the assignee on this patent?
- Scherzer Dietrich, Desbois Philippe, Gruber Freddy, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C08G69/14. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 17 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).