Coloured polymer composition

Details Coloured polymer composition Coloured polymer composition

C - Chemistry, Metallurgy

08

J

C08J 3/20 (2006.01) C08K 5/00 (2006.01) C08L 77/00 (2006.01) C08L 101/00 (2006.01)

Patent

CA 2140571

The invention relates to a coloured polymer composition with strongly improved colour 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 coloured nylon-6 is improved by a factor of 9. The brightness of the colour also increases to a surprising extent.

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