Polyester polymer containing the residue of a benzopyran coloran

Details Polyester polymer containing the residue of a benzopyran coloran Polyester polymer containing the residue of a benzopyran coloran

1988-12-21

1990-01-09

Hoke, Veronica P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

525411, 528288, 528289, 528290, 528291, 528298, C08G 6320, C08G 6318, C08G 6316

Patent

active

048929220

ABSTRACT:
Colored polyester compositions useful for molding into articles such as food containers, beverage bottles, cured structural plastics and the like comprising molding grade polyester such as a linear, thermoplastic polyester having reacted therewith or copolymerized therein the residue of a 7-amino-2H-1-benzopyran-2-one compound or a 7-amino-2H-1-benzopyran-2-imine compound, said residue absorbing radiation in the range of about 400 to 450 nm and being non-extractable from said polymer and stable under polymer formation and processing conditions.

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