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US 8,802,809 B2Granted
Method of production of cast polyamides
AssigneeRhein Chemie Rheinau GmbH
InventorsWilhelm Laufer, Armin Eckert
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Abstract
The present invention relates to a new method of production of cast polyamides.
Claims5
A method of production of cast polyamides comprising:
- adding an activator, in an amount of up to 5 wt %, to a first lactam melt at temperatures between 70 and 120° C., whereby an activator mixture is formed and homogenized, isolated after production, and optionally pelletized on a pelletizing belt or flaked on a flaking roll;
- adding a catalyst in an amount of up to 5 wt % to a second lactam melt at temperatures between 70 and 120° C., whereby a catalyst mixture is formed and homogenized and pelletized on a pelletizing belt or flaked on a flaking roll, and
- subsequently melting and mixing together said activator mixure and said catalyst mixture, thereby forming a melt mixture, and
- polymerized the melt mixture in a mould at temperatures between 80 and 160° C.
1 more element
Dependencies are inferred from the claim text.