Polyoxalkylenated disazo colored thermoplastic resins

Details Polyoxalkylenated disazo colored thermoplastic resins Polyoxalkylenated disazo colored thermoplastic resins

1997-11-07

1999-09-21

Einsmann, Margaret

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524190, 524583, 524585, 534729, 8403, 8508, 8509, 8512, 8513, 8514, 8518, 8576, 8647, C08J 320, D06P 326, D06P 352, D06P 360, D06P 379

Patent

active

059555238

ABSTRACT:
Disazo chromphores having at least two different poly(oxyalkylene) substituents are linked together by a covalent bond or by an intervening connecting group to form dimers. The preferred poly(oxyalkylene) substituents are straight chain polymers consisting of ethylene oxide and propylene oxide. The disazo colorants are useful for coloring thermoplastic resins such as polypropylene and polyethylene and show improved extraction, migration, clarity and thermal stability characteristics as compared to standard monoazo colorants.

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patent: 5591833 (1997-01-01), Hines et al.
patent: 5766268 (1998-06-01), Bruhnke

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