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US 4,230,501 AGranted
Pigments dispersible in plastics
AssigneeCities Service Company
InventorsJames Howard, Oscar J. Gombar
Life of this patent
Estimating the term…
Abstract
The compositions comprise organic or inorganic pigments mixed with a combination of (a) waxy materials such as natural, synthetic, or petroleum waxes and (b) wax-like materials such as polyethylene glycols or hydrocarbon resins. These compositions are easily dispersible in thermoset and thermoplastic resins, require no special equipment, and can be let down directly.
Claims3
A pigment composition, dispersible in plastics, comprising
- (a) a majority, by weight, of an organic or inorganic pigment,
- (b) a lesser amount, compared with (a), of a waxy material formed from a mixture of
- (I) at least one of the substances selected from the group consisting of waxes selected from the group consisting of natural waxes, synthetic waxes, and petroleum waxes, and
- (II) at least one of the wax-like polymers selected from the group consisting of polyethylene glycols and hydrocarbon resins.
1 more element
Dependencies are inferred from the claim text.