Method for clear-coloring of linear aromatic polyester

Details Method for clear-coloring of linear aromatic polyester Method for clear-coloring of linear aromatic polyester

1977-07-18

1980-01-15

Person, Sandra M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

549 52, 549 56, 546 32, C08K 548, C08K 534

Patent

active

041838424

ABSTRACT:
A method for clear-coloring of linear aromatic polyesters, which comprises mixing at least one pigment selected from the group consisting of a pigment of the formula ##STR1## and pigments of the formula ##STR2## wherein X.sub.1 and X.sub.2 represent a hydrogen atom, a chlorine atom or a methyl group, and X.sub.3 represents a chlorine atom or a methyl group, with a linear aromatic polyester, and heating the mixture to the melting temperature of the polyester to dissolve or substantially dissolve the pigment in the polyester.

REFERENCES:
patent: 1990256 (1935-02-01), Stoecklin et al.
patent: 2044796 (1936-06-01), Krauss et al.
patent: 2045475 (1936-06-01), Krauss et al.
patent: 2493072 (1950-01-01), Killian
patent: 2766244 (1956-10-01), Brouillard
patent: 2998402 (1961-08-01), Geiger et al.
patent: 3072661 (1963-01-01), Pizzarello et al.
patent: 3127412 (1964-03-01), Gaertner et al.

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