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US 5,496,918 AGranted
Process for improving the properties of polymers
AssigneeAlliedSignal Inc.
InventorsYash P. Khanna, Kevin R. Slusarz, Mina K. Gabriel, Annemarie C. Reimschuessel, John P. Sibilia
Life of this patent
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Abstract
This invention relates to a process of forming a polyamide composition having increased crystallization rate which comprises the steps of reducing the oligomeric polyamide content of said composition to less than 8% by weight of the composition, preferably with prior melt shearing, use of 1-2% nucleating filler e.g. talc and a mold release agent.
Claims18
A process for increasing the crystallization rate of a polyamide composition comprising:
- (a) shearing a melt of said polyamide composition at an effective shear rate;
- and
- (b) reducing the total amount of oligomeric polyamides in said polyamide composition to less than about 3% by weight of said composition, wherein said oligomeric polyamides includes the total amount of polyamide polymers having from one to seven monomer units.
Dependencies are inferred from the claim text.