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US3843571A Expired / Lapsed US ⏱️ 0.0 years remaining

Glamour powder coating composition containing at least two different colored powders and reflective flakes

Assignee: EIDP Inc
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Filing: 1971-12-20
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Granted: 1974-10-22
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Expires: 1991-12-20
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Abstract

Abstract The novel powder coating composition comprises finely divided polymer particles having a particle size of 1-75 microns and the composition contains 95.0-99.9 percent by weight of at least two differently colored powder particles that are capable of adhering to one another to form a continuous film; the powder particles consist essentially of 70-99.9 percent by weight of the filmforming binder and 0.1-30 percent by weight of colorant particles; and a coalesced film formed from the colored powder particle of 50 microns in thickness should transmit at least 10 percent of the light of the visible wavelength of 4000-7000 Angstroms; and correspondingly 0.1-5.0 percent by weight of reflective flakes such as aluminum flake or mica flake coated with titanium dioxide to provide the composition with a glamour appearance; THE NOVEL POLYMER COATING COMPOSITION IS PARTICULARLY USEFUL AS AN EXTERIOR FINISH FOR AUTOMOBILES AND TRUCKS.

Inventors

  • 👤 E Fitzgerald

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 03:32
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/10; C08; C08L; C08L1/00; C08L1/08; C08L1/10; C08L1/14; C08L61/00; C08L61/20

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 367 words
A POWDER COATING COMPOSITION CONSISTING ESSENTIALY OF FINELY DIVIDED PARTICLES HAVING APARTICLE SIZE OF 1-75 MICRONS OF 1. 95.0-99-9 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE POWDER COATING COMPOSITION, OF A BLEND OF AT LEAST TWO DIFFERENTLY COLORED POWDER PARTICLES CAPABLE OF ADHERING TO ONE ANOTHER TO FORM A CONTINUOUS FILM WHEREIN THE POWDER PARTICLES CONSIST ESSENTIALLY OF 70-99.9 PERCENT BY WEIGHT OF A FILM-FORMING BINDER AND 0.1-30 PERCENT BY WEIGHT OF COLORANT PARTICLES AND WHEN THE POWDER PARTICLES ARE FORMED INTO A FILM ABOUT 50 MICRONS THICK TRANSMIT AT LEAST 10 PERCENT OF THE LIGHT OF THE VISIBLE WAVE LENGTH OF 4000-7000. ANGSTROMS; AND 2. 0.1-5.0 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE POWDER COATING COMPOSITION OF INDIVIDUAL ALUMINUM FLAKE PIGMENT PARTICLES HAVING A PARTICLE SIZE BELOW 200 MESH WHEREIN THE FILM-FORMING BINDER OF THE COLORED PARTICLES IS A THERMOPLASTIC POLYMER CONSISTING ESSENTIALLY OF A. 40-90 PERCENT BY WEIGHT OF AN ACRYLIC POLYMER SELECTED FROM THE GROUP CONSISTING OF A. HONOPOLYMER OF AN ALKYL METHCARYLATE HAVING 1-3 CARBON ATOMS IN THE ALKYL GROUP; A POLYMER OF AN ALKYL METHACRYLATE HAVING 1-4 CARBON ATOMS IN THE ALKYL GROUP AND CONTAINING AT LEAST 50 PERCENT BY WEIGHT OF METHYLACRYLATE A POLYMER OF AN ALKYL METHACRYLATE AND AN ALKYL ACRYLATE HAVING 1-12 CARBON ATOMS IN THE ALKYL GROUPS AND CONTAINING AT LEAST 70 PERCENT BY WEIGHT METHYL METHACRYLATE, A GRAFT COPOLYMER OF AN ALKYL METHACRYLATE AND AN ALKYL ACRYLATE HAVING 1-12 CARBON ATOMS IN THE ALKYL GROUPS; THE ACRYLIC POLYMER HAS A NUMBER AVERGE MOLECULAR WEIGHT OF ABOUT 20,000-70,000; B 5-40 PERCENT BY WEIGHT OF CELLULOSE ESTER HAVING A VISCOISTY OF 0.1-12 SECONDS MEASURED AT 25*C ACCORDING TO ASTM-D-1343, AND A BUTYRYL CONTENT OF 30-60 PERCENT BY WEIGHT; C 5-35 PERCENT BY WEIGHT OF AN ORGANIC PLASTICIZER; WHEREIN THE FILM-FORMING CONSTITUTENTS HAVE A MELT VISCOSITY BELOW 75,000 POISES MEASURED AT 160*C AND THE POWDER PARTICLES HAVE A GLASS TRANSITION TEMPERATURES OF ABOUT 30*-60*., AND; WHEREIN THE COLORANT PARTICLES ARE SELECTED FROM THE GROUP CONSISTING OF TRANS IRON OXIDE RED PIGMENT, TRANS IRON OXIDE YELLOW PIGMEN, PHTHALOCYANINE PIGMENTS, INDANTHRONE PIGMENTS THIOINDGOID PIGMENTS PERKYLENE PIGMENTS, CARBAZOLE DIOXANE PIGMENTS ISOINDOLINONE PIGMENTS, FLAVANTHRONE PIGMENTS, ANTHANTHRONE PIGMENTS AND MIXTURES THEREOF.
Claim 2
Dependent Claim 367 words
A POWDER COATING COMPOSITION CONSISTING ESSENTIALY OF FINELY DIVIDED PARTICLES HAVING APARTICLE SIZE OF 1-75 MICRONS OF 1. 95.0-99-9 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE POWDER COATING COMPOSITION, OF A BLEND OF AT LEAST TWO DIFFERENTLY COLORED POWDER PARTICLES CAPABLE OF ADHERING TO ONE ANOTHER TO FORM A CONTINUOUS FILM WHEREIN THE POWDER PARTICLES CONSIST ESSENTIALLY OF 70-99.9 PERCENT BY WEIGHT OF A FILM-FORMING BINDER AND 0.1-30 PERCENT BY WEIGHT OF COLORANT PARTICLES AND WHEN THE POWDER PARTICLES ARE FORMED INTO A FILM ABOUT 50 MICRONS THICK TRANSMIT AT LEAST 10 PERCENT OF THE LIGHT OF THE VISIBLE WAVE LENGTH OF 4000-7000. ANGSTROMS; AND 2. 0.1-5.0 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE POWDER COATING COMPOSITION OF INDIVIDUAL ALUMINUM FLAKE PIGMENT PARTICLES HAVING A PARTICLE SIZE BELOW 200 MESH WHEREIN THE FILM-FORMING BINDER OF THE COLORED PARTICLES IS A THERMOPLASTIC POLYMER CONSISTING ESSENTIALLY OF A. 40-90 PERCENT BY WEIGHT OF AN ACRYLIC POLYMER SELECTED FROM THE GROUP CONSISTING OF A. HONOPOLYMER OF AN ALKYL METHCARYLATE HAVING 1-3 CARBON ATOMS IN THE ALKYL GROUP; A POLYMER OF AN ALKYL METHACRYLATE HAVING 1-4 CARBON ATOMS IN THE ALKYL GROUP AND CONTAINING AT LEAST 50 PERCENT BY WEIGHT OF METHYLACRYLATE A POLYMER OF AN ALKYL METHACRYLATE AND AN ALKYL ACRYLATE HAVING 1-12 CARBON ATOMS IN THE ALKYL GROUPS AND CONTAINING AT LEAST 70 PERCENT BY WEIGHT METHYL METHACRYLATE, A GRAFT COPOLYMER OF AN ALKYL METHACRYLATE AND AN ALKYL ACRYLATE HAVING 1-12 CARBON ATOMS IN THE ALKYL GROUPS; THE ACRYLIC POLYMER HAS A NUMBER AVERGE MOLECULAR WEIGHT OF ABOUT 20,000-70,000; B 5-40 PERCENT BY WEIGHT OF CELLULOSE ESTER HAVING A VISCOISTY OF 0.1-12 SECONDS MEASURED AT 25*C ACCORDING TO ASTM-D-1343, AND A BUTYRYL CONTENT OF 30-60 PERCENT BY WEIGHT; C 5-35 PERCENT BY WEIGHT OF AN ORGANIC PLASTICIZER; WHEREIN THE FILM-FORMING CONSTITUTENTS HAVE A MELT VISCOSITY BELOW 75,000 POISES MEASURED AT 160*C AND THE POWDER PARTICLES HAVE A GLASS TRANSITION TEMPERATURES OF ABOUT 30*-60*., AND; WHEREIN THE COLORANT PARTICLES ARE SELECTED FROM THE GROUP CONSISTING OF TRANS IRON OXIDE RED PIGMENT, TRANS IRON OXIDE YELLOW PIGMEN, PHTHALOCYANINE PIGMENTS, INDANTHRONE PIGMENTS THIOINDGOID PIGMENTS PERKYLENE PIGMENTS, CARBAZOLE DIOXANE PIGMENTS ISOINDOLINONE PIGMENTS, FLAVANTHRONE PIGMENTS, ANTHANTHRONE PIGMENTS AND MIXTURES THEREOF.
Claim 3
Dependent Claim 49 words
The powder coating composition of claim 1 in which the particle size is 30-50 microns, the acrylic polymer has a number average molecular weight of about 40,000-60,000, the film-forming constituents have a melt viscosity of 5,000-40, 000 poises and the powder particles have a glass transition temperature of 30*-45*C.
Claim 4
Dependent Claim 260 words
0.1-5.0 percent by weight, based on the weight of the powder coating composition of individual aluminum flake pigment particles having a particle size below 200 mesh; wherein the film-forming binder of the colored particles is a thermoplastic polymer consisting essentially of A. 40-90 percent by weight of an acrylic polymer selected from the group consisting of a homopolymer of an alkyl methcarylate having 1-3 carbon atoms in the alkyl group; a polymer of an alkyl methacrylate having 1-4 carbon atoms in the alkyl group and containing at least 50 percent by weight of methyl methacrylate, a polymer of an alkyl methacrylate and an alkyl acrylate having 1-12 carbon atoms in the alkyl groups and containing at least 70 percent by weight methyl methacrylate, a graft copolymer of an alkyl methacrylate and an alkyl acrylate having 1-12 carbon atoms in the alkyl groups; the acrylic polymer has a number average molecular weight of about 20,000-70,000; B. 5-40 percent by weight of cellulose ester having a viscosity of 0.1-12 seconds measured at 25*C. according to ASTM-D-1343, and a butyryl content of 30-60 percent by weight; C. 5-35 percent by weight of an organic plasticizer; wherein the film-forming constituents have a melt viscosity below 75,000 poises measured at 160*C. and the powder particles have a glass transition temperature of about 30*-60*C., and wherein the colorant particles are selected from the group consisting of trans iron oxide red pigment, trans iron oxide yellow pigment, phthalocyanine pigments, indanthrone pigments, thioindigoid pigments, perylene pigments, carbazole dioxane pigments, isoindolinone pigments, flavanthrone pigments, anthanthrone pigments and mixtures thereof.
Claim 5
Dependent Claim 260 words
0.1-5.0 percent by weight, based on the weight of the powder coating composition of individual aluminum flake pigment particles having a particle size below 200 mesh; wherein the film-forming binder of the colored particles is a thermoplastic polymer consisting essentially of A. 40-90 percent by weight of an acrylic polymer selected from the group consisting of a homopolymer of an alkyl methcarylate having 1-3 carbon atoms in the alkyl group; a polymer of an alkyl methacrylate having 1-4 carbon atoms in the alkyl group and containing at least 50 percent by weight of methyl methacrylate, a polymer of an alkyl methacrylate and an alkyl acrylate having 1-12 carbon atoms in the alkyl groups and containing at least 70 percent by weight methyl methacrylate, a graft copolymer of an alkyl methacrylate and an alkyl acrylate having 1-12 carbon atoms in the alkyl groups; the acrylic polymer has a number average molecular weight of about 20,000-70,000; B. 5-40 percent by weight of cellulose ester having a viscosity of 0.1-12 seconds measured at 25*C. according to ASTM-D-1343, and a butyryl content of 30-60 percent by weight; C. 5-35 percent by weight of an organic plasticizer; wherein the film-forming constituents have a melt viscosity below 75,000 poises measured at 160*C. and the powder particles have a glass transition temperature of about 30*-60*C., and wherein the colorant particles are selected from the group consisting of trans iron oxide red pigment, trans iron oxide yellow pigment, phthalocyanine pigments, indanthrone pigments, thioindigoid pigments, perylene pigments, carbazole dioxane pigments, isoindolinone pigments, flavanthrone pigments, anthanthrone pigments and mixtures thereof.
Claim 6
Dependent Claim 97 words
The powder coating composition of claim 2 in which the film-forming constituents consist essentially of 55-75 percent by weight of a copolymer of 70-90 percent by weight methyl methacrylate and 10-30 percent by weight of butyl methacrylate; 20-30 percent by weight of cellulose acetate butyrate having a butyryl content of 45-55 percent by weight and a viscosity of 1-2 seconds; 5-25 percent by weight of a plasticizer selected from the group consisting of an alkyl phthalate ester having 2-10 carbon atoms in the alkyl group, a polyester and a mixture of the phthalate ester and the polyester.
Claim 7
Dependent Claim 56 words
The powder coating composition of claim 2 in which the copolymer consists of 75 percent by weight methyl methacrylate and 25 percent by weight butyl methacrylate; the cellulose acetate butyrate has a 53 percent butyryl content and a viscosity of 1 second; the plasticizer is a blend of phthalate ester of didecyl phthalate and diethyl phthalate.
Claim 8
Dependent Claim 22 words
The powder coating composition of claim 3 in which the plasticizer is a 2:1 blend of didecyl phthalate and di-2-ethyl hexyl phthalate.
Claim 9
Dependent Claim 27 words
The powder coating composition of claim 3 in which the plasticizer is a 4:1 blend of ethylene glycol adipate benzoate polyester and neopentyl glycol adipate benzoate polyester.
Claim 10
Dependent Claim 43 words
The powder coating composition of claim 2 in which the film-forming constituents consist essentially of polymethyl methacrylate, cellulose acetate butyrate having a butyryl content of 38 percent and a viscosity of 2 seconds, and a plasticizer blend of didecyl phthalate and diethyl phthalate.
Claim 11
Dependent Claim 51 words
The powder coating composition of claim 2 in which the film-forming constituents consist essentially of a copolymer of methyl methacrylate and butyl methacrylate; cellulose acetate butyrate having a butyryl content of 45-55 percent by weight and a viscosity of 1 second, and a plasticizer blend of didecyl phthalate and diethyl phthalate.
Claim 12
Dependent Claim 75 words
The powder coating composition of claim 2 in which the film-forming constituents consist essentially of 55-75 percent by weight of an acrylic polymer of methyl methacrylate, butyl methacrylate and methacrylic acid; 20-30 percent by weight of cellulose acetate butyrate having a butyryl content of 53 percent by weight and a viscosity of 1 second, and 5-25 percent by weight of a blend of polymeric plasticizers of ethylene glycol adipate benzoate and neopentyl glycol adipate benzoate.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-10-21 1978-04-22 1978-10-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-10-21 1982-04-22 1982-10-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-10-21 1986-04-22 1986-10-22 $7700.00 Window Closed / Lapsed

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