Patent ID: 11920009
Assignee: ADVANSIX RESINS & CHEMICALS LLC
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  D | IPC C  D

Claim 5:
6. A polyamide polymer blend comprising:
a terminated polyamide polymer; and
a masterbatch polyamide polymer comprising:
a residue of caprolactam;
a residue of a diamine; and
a residue of at least one of 5-sulfoisophthalic acid and a 5-sulfoisophthalic acid salt,
wherein a concentration of the residue of the at least one of 5-sulfoisophthalic acid and the 5-sulfoisophthalic acid salt is from 0.8 wt. % to 1.2 wt. % based on a total weight of the polyamide polymer blend, and
whereby the masterbatch polyamide polymer is capable of conferring stain resistance to the terminated polyamide polymer while maintaining the processability of the terminated polyamide polymer, wherein processability is defined by a melt stability within a range between 255° C. and 275° C.