Lignin and lignin derivatives as copolymerizable colorants for p

Details Lignin and lignin derivatives as copolymerizable colorants for p Lignin and lignin derivatives as copolymerizable colorants for p

1987-06-22

1989-02-07

Kight, John

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

Synthetic resins

From lignin, tannin, or derivative reactant

C08H 502, C08G 6302

Patent

active

048032557

ABSTRACT:
Colored shapable polyesters having copolymerized therein lignin or lignin derivatives are prepared by condensing the lignin or lignin derivatives into the polyester backbone during the polymerization reaction. The lignin moieties are thermally stable at the polymer processing temperatures and are nonextractable from the polyester backbone. These colored, shapable polyesters are particularly suitable for use in food, beverage, pharmaceutical, or cosmetic container applications.

REFERENCES:
patent: 4017474 (1977-04-01), Glasser et al.
patent: 4042546 (1977-08-01), Simon

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