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US 2025/0340700 A1Published application
High flow, dual-terminated polyamide polymers
AssigneeAdvanSix Resins & Chemicals LLC
InventorsYuan-Ping R. Ting, Veera Nelliappan, David J. Loy, John V. Facinelli, Gary Martin
Life of this patent
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Abstract
Polyamides terminated at the amine end group, the carboxyl end group, or both the amine and carboxyl end groups. Specifically, the present disclosure relates to terminated polyamide polymers having a weight average molecular weight (Mw) from 22,000 Da to 56,000 Da and a formic acid viscosity (FAV) of less than 45.
Claims18
A terminated polyamide, comprising:
- a weight average molecular weight (Mw) from 22,000 Da to 56,000 Da;
- and
- a formic acid viscosity (FAV) of less than 45.
A process of synthesizing a terminated polyamide, comprising:
- hydrolyzing a lactam to provide monomers having an amine end group and a carboxyl end group;
- polycondensing the monomers at a temperature of 230° C. to 270° C. to provide polyamide polymers having an amine end group and a carboxyl group;
- and
- terminating the polyamide by reaction with at least one chain terminator to provide a terminated polyamide with a weight average molecular weight (Mw) of 22,000 Da to 56,000 Da and a formic acid viscosity (FAV) of less than 45.
1 more element
Dependencies are inferred from the claim text.