Additive-containing polymer compositions and methods of...

C - Chemistry – Metallurgy – 08 – K

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C08K 9/04 (2006.01) C08J 3/20 (2006.01) C08J 3/22 (2006.01) D01D 5/28 (2006.01) D01F 1/04 (2006.01) D02G 3/02 (2006.01)

Patent

CA 2208231

Disclosed is a polymer composition including nonaqueous additive system having dispersant-coated pigments physically dispersed in a liquid nonaqueous polymeric carrier which may be added directly to a melt flow of a polymeric host material. The additive system employed in the polymeric systems is is most preferably in the form of a particulate paste which can be added in metered amounts (dosed) to a melt flow of the polymeric host material prior to being spun into filaments. By providing a number of additive systems having a number of different additive attributes, and controllably dosing one or more into the melt flow of host polymeric material, shaped objects of the polymeric material (e. g., melt-spun filaments) having different additive attributes may be produced on a continuous basis without shutting down the shaping operation.

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