POLYAMIDES WITH PENDENT OPTICAL ABSORBERS AND RELATED METHODS

    公开(公告)号:US20230374218A1

    公开(公告)日:2023-11-23

    申请号:US18359278

    申请日:2023-07-26

    CPC classification number: C08G69/48

    Abstract: Methods for producing a polyamide having an optical absorber pendent from the polyamide's backbone (OAMB-polyamide) may comprise: esterifying a hydroxyl-pendent optical absorber with a halogen-terminal aliphatic acid to yield a halogen-terminal alkyl-optical absorber; and N-alkylating a polyamide with the halogen-terminal alkyl-optical absorber to yield the OAMB-polyamide. Other methods for producing an OAMB-polyamide may comprise: esterifying a carboxyl-pendent optical absorber with a halogen-terminal aliphatic alcohol to yield a halogen-terminal alkyl-optical absorber; and N-alkylating a polyamide with the modified optical absorber to yield a polyamide having the OAMB-polyamide.

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