Process for the mass colouration or whitening of linear...

Details Process for the mass colouration or whitening of linear... Process for the mass colouration or whitening of linear...

C - Chemistry, Metallurgy

08

J

31/154, 400/5222

C08J 3/20 (2006.01) C08K 5/00 (2006.01) C08L 67/00 (2006.01) D01F 1/10 (2006.01)

Patent

CA 1070042

Process for the mass colouration or whitening of linear polyesters Abstract of the Disclosure A process for the mass colouration or whitening of linear polyesters, wherein the polyester to be coloured is mixed, in the solid or fused state, with a preparation consisting substantially of a colourant or fluorescent brightener which is soluble or insoluble in the polyester, and of a polystyrene with a softening point above 100°C, and the resultant mixture, provided it is not already in the form of a melt, is converted into the molten state and formed into shaped articles. Evenly and deeply coloured polyesters are obtained.

241852

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