PVC plastisols comprising effect pigments, their preparation and use in coil coating
AssigneeBASF SE
InventorsStefanie Geilen, Paul Davies
Life of this patent
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Abstract
Disclosed herein are effect pigment PVC plastisol, uses thereof, and proceses for producing effect pigment PVC plastisol. In one embodiment, an effect pigment PVC plastisol comprises: (A) at least one finely divided PVC homopolymer having particle sizes of from 0.04 to 40 μm, and which as a dispersion in a plasticizer exhibits dilatancy, (B) at least one finely divided PVC homopolymer having particle sizes of from 1 to 400 μm, and which as a dispersion in a plasticizer exhibits pseudoplasticity, (C) at least one plasticizer, and (D) at least one effect pigment.
Claims18
An effect pigment PVC plastisol comprising
- (A) at least one finely divided PVC homopolymer, prepared by emulsion polymerization or microemulsion polymerization, having particle sizes of from 0.04 to 40 μm, and which as a dispersion in a plasticizer exhibits dilatancy,
- (B) at least one finely divided PVC homopolymer, prepared by emulsion polymerization, having particle sizes of from 1 to 400 μm, and which as a dispersion in a plasticizer exhibits pseudoplasticity,
- (C) at least one plasticizer,
- (D) at least one effect pigment, and
- (F) at least one additive,
- wherein the at least one additive (F) comprises an organic solvent, and the weight ratio (A):(B) is chosen so that the PVC plastisol exhibits pseudoplasticity.
An effect pigment PVC plastisol comprising
- (A) at least one finely divided PVC homopolymer prepared by emulsion polymerization or microemulsion polymerization having particle sizes of from 0. 04 to 40 μm, and which as a dispersion in a plasticizer exhibits dilatancy,
- (B) at least one finely divided PVC homopolymer prepared by emulsion polymerization, having particle sizes of from 1 to 400 μm, and which as a dispersion in a plasticizer exhibits pseudoplasticity,
- (C) at least one plasticizer, and
- (D) at least one effect pigment,
- wherein a coating formed from the PVC plastisol has a difference in L*, when measured at 15° and at 75°, of an absolute value of at least 41.3;
- a difference in a*, when measured at 15° and at 75°, of an absolute value of at least 15;
- and a difference in b*, when measured at 15° and at 75°, of an absolute value of at least 5.8.
Dependencies are inferred from the claim text.