Preparation of dyed plastics or polymeric dye particles

Details Preparation of dyed plastics or polymeric dye particles Preparation of dyed plastics or polymeric dye particles

2005-08-02

2005-08-02

Einsmann, Margaret (Department: 1751)

Bleaching and dyeing; fluid treatment and chemical modification

Nontextile, dyeing process or product, including inorganic...

C005S510000, C005S512000, C005S513000, C005S512000, C005S512000, C005S512000, C005S677000, 92, 92, 92

Reexamination Certificate

active

06923836

ABSTRACT:
The present application relates to a process for preparing dyed plastics or polymeric dye particles characterized in that it comprises mixing a high molecular weight organic material with a coloristically effective amount of at least one dye of the formula where R1is hydrogen, hydroxyl or a radical —NHCO—R6, where R6is C1-C6alkyl or unsubstituted or C1-C4alkyl- or halogen-substituted phenyl, R2is hydrogen, hydroxyl or a radical W—R7, where W is —NHCO— or —S— and R7is C1-C6alkyl or unsubstituted or C1-C4alkyl- or halogen-substituted phenyl, R3is hydrogen, R4is hydrogen or hydroxyl, R5is hydrogen, or R3and R4combine to form the radical of the formula, where the rings A and B may independently bear further substituents.

REFERENCES:
patent: 1002066 (1911-08-01), Luttringhaus
patent: 1690913 (1928-11-01), Unger et al.
patent: 2031406 (1936-02-01), Bruck
patent: 2192142 (1974-02-01), None
patent: 1022652 (1966-03-01), None
patent: 1385003 (1975-02-01), None

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