Colored polymer composition

Details Colored polymer composition Colored polymer composition

1995-01-23

1997-10-07

Michl, Paul R.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5263072, 5263074, 528486, 528491, 528492, 524 80, C08F 2056, C08F12056, C08F22056

Patent

active

056749481

ABSTRACT:
The invention relates to a colored polymer composition with strongly improved color properties. This improvement is achieved by masking groups in the polymer that are reactive with respect to the colorant with the aid of an effective quantity of a compound suitable for this purpose.
The invention is particularly suitable for polyamides, the amino end group content being reduced to less than 20, preferably less than 5 meq/kg, with the aid of acetyl lactam. The thermostability of e.g. CI Pigment Red 209 colored nylon-6 is improved by a factor of 9. The brightness of the color also increases to a surprising extent.

REFERENCES:
patent: 3281260 (1966-10-01), Ucci
patent: 3380798 (1968-04-01), Ucci
patent: 3402014 (1968-09-01), Ucci
patent: 3819555 (1974-06-01), Kaufman
patent: 4623602 (1986-11-01), Bakker et al.
patent: 5030697 (1991-07-01), Hugl
patent: 5227421 (1993-07-01), Kageyama et al.
patent: 5470918 (1995-11-01), Tsutumi

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