IP Library › Patent Application 19305383
Patent Application
App. No. 19/305,383

BRANCHED, TERMINATED POLYAMIDE COMPOSITIONS

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Quick Facts
Patent No.
US None
App. No.
19/305,383
Abstract

The present disclosure provides a method of producing partially terminated polyamide compositions with branched chains from polyamide precursors. The partially terminated, branched polyamide compositions have increased melt strength properties and melt stability.

Claims (18)

1 . A polyamide composition having the following formula:

wherein:

a=6 to 10;

b=6 to 10;

c=6 to 10;

d=6 to 10;

x=80 to 400;

m=1 to 400;

said polyamide includes dimer acids wherein carbon chains of the dimer acids both have more than 8 carbons;

the polyamide composition has a dimer diamine or dimer acid composition between 1 wt. % and 40 wt. % based on the total weight of the polyamide composition;

the polyamide composition is terminated with an amine endgroup and a carboxyl endgroup; and

the polyamide composition has a relative viscosity between 3.0 and 7.0 RV as determined by GB/T 12006.1-2009/ISO 307:2007.

2 . The polyamide composition of claim 1 , wherein the amine endgroup concentration is between 15 mmol/kg to 40 mmol/kg, and the carboxyl endgroup concentration is between 15 mmol/kg to 40 mmol/kg.

3 . The polyamide composition of claim 1 , wherein the polyamide composition has a relative viscosity of 4.0 RV to 7.0 RV as determined by GB/T 12006.1-2009/ISO 307:2007.

4 . The polyamide composition of claim 1 , wherein the polyamide composition has a formic acid viscosity of 230 FAV to 950 FAV, as determined by ASTM D789.

5 . The polyamide composition of claim 1 , wherein the polyamide composition has a formic acid viscosity of 230 FAV to 260 FAV, as determined by ASTM D789.

6 . A polyamide composition that is dual-terminated with an amine end group and a carboxyl end group, the polyamide composition has a relative viscosity of 4.0 RV to 7.0 RV and a formic acid viscosity of 230 FAV to 970 FAV, as determined by ASTM D789.

7 . The polyamide composition of claim 6 , wherein the amine endgroup concentration is between 15 mmol/kg to 40 mmol/kg, and the carboxyl endgroup concentration is between 15 mmol/kg to 40 mmol/kg.