Polyamide fluorescent pigments

Details Polyamide fluorescent pigments Polyamide fluorescent pigments

1991-03-25

1992-03-10

Willis, Jr., Prince

Compositions

Organic luminescent material containing compositions

Synthetic resin containing

524606, 524845, C09K 1102

Patent

active

050947770

ABSTRACT:
A fluorescent pigment includes a fluorescent dye and a resin carrier which is the polyamide reaction product of a diamine and a diacid. The fluorescent pigments are especially useful to color plastics and have improved resistance to plateout during molding. The pigments may be melt-blended with plastic to provide a color concentrate. The polyamide resins have a molecular weight in the range of 3,000 to 50,000 and may be readily ground to micron sized particles.

REFERENCES:
patent: 2938873 (1960-05-01), Kazenas
patent: 3181949 (1965-05-01), Koerber et al.
patent: 3412036 (1968-11-01), McIntosh
patent: 3812054 (1974-05-01), Noetzel et al.
patent: 3915884 (1975-10-01), Kazenas
patent: 3922232 (1975-11-01), Schein

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