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US 10,472,471 B2Granted
Masterbatch comprising colorant particles and a polyol poly(hydroxy fatty acid) ester as dispersing agent
AssigneeEinar A/S
InventorViggo Creemers Norn
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Abstract
The present invention relates to a masterbatch comprising colorant particles, a polyol poly(hydroxy fatty acid) ester dispersing agent and a carrier resin. The masterbatch is used for coloring thermoplastic polymer compositions. The present invention also relates to a method for producing said masterbatch, a colored thermoplastic polymer composition comprising said masterbatch and colored thermoplastic products formed of said colored thermoplastic composition.
Claims13
A masterbatch for coloring of thermoplastic polymer compositions, the masterbatch comprising:
- a colorant in a total amount of 10-50% (w/w) relative to the total weight of the masterbatch,
- a dispersing agent in a total amount of 0.5-20% (w/w) relative to the total weight of the masterbatch,
- a carrier resin in a total amount of 30-80% (w/w) relative to the total weight of the masterbatch, and
- optionally, one or more additives,
- wherein the dispersing agent is a polyol poly(hydroxyl fatty acid) ester (pphe dispersing agent) wherein the pphe dispersing agent is poly(glycerol) poly(ricinoleate) ester (PGPR) in which the esterified poly(ricinoleate) of the PGPR has an average degree of polymerization of at least 5 and in which the esterified polyglycerol of the PG PR has an average degree of polymerization of 2-5.
2 more elements
Dependencies are inferred from the claim text.