| 摘要 |
<p>1,244,367. Pigmenting and brightening polymers. CIBA-GEIGY Ltd. 5 Dec., 1968 [5 Dec., 1967; 4 Oct., 1968], No. 57838/68. Headings C3P and C3R. [Also in Divisions C4-C5] Dry preparations for pigmenting or brightening thermoplastic compositions comprise 25- 75% by wt. pigment and/or water-insoluble optical brightener, and 75-25% of a salt of an acyclic aliphatic C 6 + carboxylic acid and a Group II metal or aluminium. Optionally up to 10% by wt. of the metal salt of an amide or ester of a C 1 -C 10 alkanolamine and a fatty acid having a lipophilic C 10+ residue may be present. Examples disclose (1) a polyamide of #-caprolactam coated with #-Cu-phthalocyanine/Mg (or Ca or Al) stearate and the coated chips extrusion spun to a blue filament; (2) polypropylene chips coated with #-Cu-phthalocyanine (or flavanthrone)/Mg stearate and extruded; (4) polyethylene coloured with a red pigment/magnesium behenate mixture and rolled to a foil; polyethylene terephthalate chips coated with the same mixture and melt spun to fibre.</p> |
