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US 5,330,872 AGranted
Liquid colored toner compositions
AssigneeOlin Corporation
InventorsPeter E. Materazzi, Barry F. Nelsen
Life of this patent
Estimating the term…
Abstract
A liquid toner composition comprising: A. a colored predispersion comprising a homogeneous mixture of at least one selected nonpolymeric resin material, at least one selected polymeric plasticizer, at least one selected colorant material, and at least one selected maleic anhydride adduct of polyolefin; B. an aliphatic hydrocarbon carrier liquid having a conductivity of 10.sup.-9 MHOS/cm or less, a dielectric constant of 3 or less, and a flash point of 100.degree. F. or greater; and C. external charge system comprising an interacting mixture of a maleic anhydride adduct of polyolefin and an amiphipathic copolymer.
Claims14
A liquid toner composition comprising:
- A. a colored predispersion comprising a homogeneous mixture of at least one nonpolymeric resin material, at least one polymeric plasticizer, at least one colorant material and at least one maleic anhydride adduct of polyolefin;
- (1) said nonpolymeric resin material characterized by:
- (aa) being insoluble and nonswellable in the liquid carrier;
- (bb) having a melting point between 60.degree. to 180.degree. C.;
- and
- (cc) having an acid number higher than about 100;
- (2) said polymeric plasticizer characterized by:
- (aa) being soluble in said nonpolymeric resin;
- (bb) being insoluble in the liquid carrier;
- (cc) having a melting point from about 35.degree. C. to about 70.degree. C.;
- and
- (3) said colorant material having an average primary particle size of less than about 0.5 microns;
- (4) said maleic anhydride adduct of polyolefin characterized by
- (aa) being partially soluble in the liquid carrier;
- and
- (bb) having an acid number higher than about 45;
- and wherein said colored predispersion contains about 50% to about 98.5% by weight nonpolymeric resin;
- about 1.0% to 20% by weight polymeric plasticizer;
- about 0.5% to 30% by weight colorant material and about 0.5 to about 10% by weight anhydride adduct of polyolefin;
- and
- B. an aliphatic hydrocarbon carrier liquid having a conductivity of 10.sup.-9 MHOS/.sub.cm or less, a dielectric constant of 3 or less, and a flash point of 100.degree. F. or greater;
- and
- C. external charge system comprising an interacting mixture of a maleic anhydride adduct of polyolefin and an amphipathic copolymer, said maleic anhydride adduct of polyolefin characterized by:
- (aa) being partially soluble in the liquid carrier;
- and
- (bb) having an acid number higher than about 45;
- the weight ratio of said anhydride adduct of polyolefin and amphipathic copolymer being from about 1:10 to about 10:1;
- wherein said toner containing about 0.1% to about 10% by weight colored predispersion and about 99.9% to about by weight of said liquid carrier and about 0.005% to about 0.25% of said external charge system and said colored predispersion particles having about 0.5-10 micron average particle size and being insoluble and nonswellable in said liquid carrier.
25 more elements
A liquid toner concentrate composition comprising:
- A. a colored predispersion comprising a homogeneous mixture of at least one nonpolymeric resin material, at least one polymeric plasticizer, at least one colorant material and at least one maleic anhydride adduct of polyolefin;
- (1) said nonpolymeric resin material characterized by:
- (aa) being insoluble and nonswellable in the liquid carrier;
- (bb) having a melting point between 60.degree. to 180.degree. C.;
- and
- (cc) having an acid number higher than about 100;
- (2) said polymeric plasticizer characterized by:
- (aa) being soluble in said nonpolymeric resin;
- (bb) being insoluble in the liquid carrier;
- (cc) having a melting point from about 35.degree. C. to about 70.degree. C.;
- and
- (3) said colorant material having an average primary particle size of less than about 0.5 microns;
- (4) said maleic anhydride adduct of polyolefin characterized by
- (aa) being partially soluble in the liquid carrier;
- and
- (bb) having an acid number higher than about 45;
- and wherein said colored predispersion contains about 50% to about 98.5% by weight nonpolymeric resin;
- about 1.0% to 20% by weight polymeric plasticizer;
- about 0.5% to 30% by weight colorant material and about 0.5 to about 10% by weight anhydride adduct of polyolefin;
- and
- B. an aliphatic hydrocarbon carrier liquid having a conductivity of 10.sup.-9 MHOS/.sub.cm or less, a dielectric constant of 3 or less, and a flash point of 100.degree. F. or greater;
- and
- C. external charge system comprising an interacting mixture of a maleic anhydride adduct of polyolefin and an amphipathic copolymer, said maleic anhydride adduct of polyolefin characterized by:
- (aa) being partially soluble in the liquid carrier;
- and
- (bb) having an acid number higher than about 45;
- the weight ratio of said maleic-modified wax and amphipathic copolymer being from about 1:10 to about 10:1;
- wherein said toner concentrate containing about 20% to about 50% by weight solids and about 80% to about 50% by weight of said liquid carrier and about 0.005% to about 0.25% of said external charge system and said colored predispersion particles having about 0.5-10 micron average particle size and being insoluble and nonswellable in said liquid carrier.
25 more elements
Dependencies are inferred from the claim text.