CPC C08G 69/48 (2013.01) [C08G 69/265 (2013.01); C08G 69/28 (2013.01); C08L 77/06 (2013.01)] | 20 Claims |
1. A semi-aromatic polyamide comprised of structural units derived from a diamine, a dibasic carboxylic acid and a mono carboxylic acid and end-capped structures derived from the following formula (I) and formula (II),
wherein the formula (I) is selected from compounds represented by the following formula (I-1) and/or formula (I-2):
![]() wherein R1 is a carboxyl group, or a carboxyl-substituted C1-C10 alkyl group; R2 is a C1-C4 alkyl group or H; R3 is selected from a C6-C9 aryl group or H; n is 1 or 2 and corresponds to a cation of Mn+; and Mn+ is selected from +1- and +2-valent metal cations; the formula (II) is:
![]() wherein R4 is selected from a C1-C10 alkyl group, and
wherein total phosphorus content in per unit mass of the semi-aromatic polyamide is not greater than 200 ppm.
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