US4014956A
Expired / Lapsed
US
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Thermoplastic powder coating compositions
Assignee: Union Carbide Corp
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Filing: 1974-09-13
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Granted: 1977-03-29
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Expires: 1994-09-13
Abstract
Abstract Powder coating compositions of vinyl chloride polymers or blends thereof, which compositions have an average inherent viscosity of from about 0.2 to about 0.55 dl/gm, have been found that are useful for electrostatic spray coating to produce thin films.
Inventors
- 👤 Oliver Wendell Smith
- 👤 Joseph Victor Koleske
- 👤 Julius John Brezinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:15
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/06; Y; Y10; Y10S; Y10S524/00; Y10S524/901; Y10S524/902; Y10S524/904; Y10S525/00; Y10S525/934
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
129 words
A dry vinyl chloride copolymer powder coating composition suitable for the production of thin films, said powder composition having essentially all of the powder particles ranging in size from 1 micron to 75 mircons and consisting of a mixture of two or more vinyl chloride copolymers that have at least 50 weight percent vinyl chloride polymerized in each copolymer in said mixture, wherein the mixture comprises (a) a positive amount up to 85 weight percent, based on the total weight of copolymers present, of at least one vinyl chloride copolymer having an inherent viscosity up to 0.3 dl/gm with (b) the balance being one or more vinyl chloride copolymers having an inherent viscosity above 0.3 dl/gm, said mixture having an average inherent viscosity of from 0.2 to 0.55 dl/gm.
Claim 2
Dependent Claim
129 words
A dry vinyl chloride copolymer powder coating composition suitable for the production of thin films, said powder composition having essentially all of the powder particles ranging in size from 1 micron to 75 mircons and consisting of a mixture of two or more vinyl chloride copolymers that have at least 50 weight percent vinyl chloride polymerized in each copolymer in said mixture, wherein the mixture comprises (a) a positive amount up to 85 weight percent, based on the total weight of copolymers present, of at least one vinyl chloride copolymer having an inherent viscosity up to 0.3 dl/gm with (b) the balance being one or more vinyl chloride copolymers having an inherent viscosity above 0.3 dl/gm, said mixture having an average inherent viscosity of from 0.2 to 0.55 dl/gm.
Claim 3
Dependent Claim
20 words
A powder coating composition as claimed in claim 1 wherein at least one vinyl chloride copolymer is poly(vinyl chloride/vinyl acetate).
Claim 4
Dependent Claim
20 words
A powder coating composition as claimed in claim 1 wherein the particles range in size from 5 to 40 microns.
Claim 5
Dependent Claim
27 words
A powder coating composition as claimed in claim 1 wherein the mixture of vinyl chloride copolymers has an average inherent viscosity of from 0.3 to 0.45 dl/gm.
Claim 6
Dependent Claim
157 words
A dry vinyl chloride copolymer powder coating composition suitable for the production of thin films, said powder composition having essentially all of the powder particles ranging in size from 1 micron to 75 microns and consisting of from 0 to 5 weight percent epoxy heat stabilizer, from 0 to 10 weight percent polyamine or amine resin, from 0 to 0.5 weight percent flow modifier and a mixture of two or more vinyl chloride copolymers that have at least 50 weight percent vinyl chloride polymerized in each copolymer in said mixture, wherein the mixture comprises (a) a positive amount up to 85 weight percent, based on the total weight of copolymers present, of at least one vinyl chloride copolymer having an inherent viscosity up to 0.3 dl/gm. with (b) the balance being one or more vinyl chloride copolymers having an inherent viscosity above 0.3 dl/gm., said mixture having an average inherent viscosity of from 0.2 to 0.55 dl/gm.
Claim 7
Dependent Claim
157 words
A dry vinyl chloride copolymer powder coating composition suitable for the production of thin films, said powder composition having essentially all of the powder particles ranging in size from 1 micron to 75 microns and consisting of from 0 to 5 weight percent epoxy heat stabilizer, from 0 to 10 weight percent polyamine or amine resin, from 0 to 0.5 weight percent flow modifier and a mixture of two or more vinyl chloride copolymers that have at least 50 weight percent vinyl chloride polymerized in each copolymer in said mixture, wherein the mixture comprises (a) a positive amount up to 85 weight percent, based on the total weight of copolymers present, of at least one vinyl chloride copolymer having an inherent viscosity up to 0.3 dl/gm. with (b) the balance being one or more vinyl chloride copolymers having an inherent viscosity above 0.3 dl/gm., said mixture having an average inherent viscosity of from 0.2 to 0.55 dl/gm.
Claim 8
Dependent Claim
168 words
A dry vinyl chloride copolymer powder coating composition suitable for the production of thin films, said powder composition having essentially all of the powder particles ranging in size from 1 micron to 75 microns and consisting of from 0 to 5 weight percent epoxy heat stabilizer, from 0 to 10 weight percent polyamine or amine resin, from 0 to 0.5 weight percent flow modifier and a mixture of two or more vinyl chloride copolymers that have at least 50 weight percent vinly chloride polymerized in each copolymer in said mixture, wherein the mixture comprises (a) a positive amount up to 85 weight percent, based on the total weight of copolymers present, of at least one vinyl chloride copolymer having an inherent viscosity up to 0.3 dl/gm. with (b) the balance being one or more vinyl chloride copolymers having an inherent viscosity above 0.3 dl/gm., said mixture having an average inherent viscosity of from 0.2 to 0.55 dl/gm. and wherein at least one vinyl chloride copolymer is poly(vinyl chloride/vinylacetate).
Claim 9
Dependent Claim
168 words
A dry vinyl chloride copolymer powder coating composition suitable for the production of thin films, said powder composition having essentially all of the powder particles ranging in size from 1 micron to 75 microns and consisting of from 0 to 5 weight percent epoxy heat stabilizer, from 0 to 10 weight percent polyamine or amine resin, from 0 to 0.5 weight percent flow modifier and a mixture of two or more vinyl chloride copolymers that have at least 50 weight percent vinly chloride polymerized in each copolymer in said mixture, wherein the mixture comprises (a) a positive amount up to 85 weight percent, based on the total weight of copolymers present, of at least one vinyl chloride copolymer having an inherent viscosity up to 0.3 dl/gm. with (b) the balance being one or more vinyl chloride copolymers having an inherent viscosity above 0.3 dl/gm., said mixture having an average inherent viscosity of from 0.2 to 0.55 dl/gm. and wherein at least one vinyl chloride copolymer is poly(vinyl chloride/vinylacetate).
Claim 10
Dependent Claim
157 words
A dry vinyl chloride copolymer powder coating composition suitable for the production of thin films, said powder composition having essentially all of the powder particles ranging in size from 5 microns to 40 microns and consisting of from 0 to 5 weight percent epoxy heat stabilizer, from 0 to 10 weight percent polyamine or amine resin, from 0 to 0.5 weight percent flow modifier and a mixture of two or more vinyl chloride copolymers that have at least 50 weight percent vinyl chloride polymerized in each copolymer in said mixture wherein the mixture comprises (a) a positive amount up to 85 weight percent, based on the total weight of copolymers present, of at least one vinyl chloride copolymer having an inherent viscosity up to 0.3 dl/gm. with (b) the balance being one or more vinyl chloride copolymers having an inherent viscosity above 0.3 dl/gm., said mixture having an average inherent viscosity of from 0.2 to 0.55 dl/gm.
Claim 11
Dependent Claim
157 words
A dry vinyl chloride copolymer powder coating composition suitable for the production of thin films, said powder composition having essentially all of the powder particles ranging in size from 5 microns to 40 microns and consisting of from 0 to 5 weight percent epoxy heat stabilizer, from 0 to 10 weight percent polyamine or amine resin, from 0 to 0.5 weight percent flow modifier and a mixture of two or more vinyl chloride copolymers that have at least 50 weight percent vinyl chloride polymerized in each copolymer in said mixture wherein the mixture comprises (a) a positive amount up to 85 weight percent, based on the total weight of copolymers present, of at least one vinyl chloride copolymer having an inherent viscosity up to 0.3 dl/gm. with (b) the balance being one or more vinyl chloride copolymers having an inherent viscosity above 0.3 dl/gm., said mixture having an average inherent viscosity of from 0.2 to 0.55 dl/gm.
Claim 12
Dependent Claim
156 words
A dry vinyl chloride copolymer powder coating composition suitable for the production of thin films, said powder composition having essentially all of the powder particles ranging in size from 1 micron to 75 microns and consisting of from 0 to 5 weight percent epoxy heat stabilizer, from 0 to 10 weight percent polyamine or amine resin, from 0 to 0.5 weight percent flow modifier and a mixture of two or more vinyl chloride copolymers that have at least 50 weight percent vinyl chloride polymerized in each copolymer in said mixture, wherein the mixture comprises (a) a positive amount up to 85 weight percent, based on the total weight of copolymers present, of at least one vinyl chloride copolymer having an inherent viscosity up to 0.3 dl/gm. with (b) the balance being one or more vinyl chloride copolymers having an inherent viscosity above 0.3 dl/gm., said mixture having an average inherent viscosity of from 0.3 to 0.45
Claim 13
Dependent Claim
156 words
A dry vinyl chloride copolymer powder coating composition suitable for the production of thin films, said powder composition having essentially all of the powder particles ranging in size from 1 micron to 75 microns and consisting of from 0 to 5 weight percent epoxy heat stabilizer, from 0 to 10 weight percent polyamine or amine resin, from 0 to 0.5 weight percent flow modifier and a mixture of two or more vinyl chloride copolymers that have at least 50 weight percent vinyl chloride polymerized in each copolymer in said mixture, wherein the mixture comprises (a) a positive amount up to 85 weight percent, based on the total weight of copolymers present, of at least one vinyl chloride copolymer having an inherent viscosity up to 0.3 dl/gm. with (b) the balance being one or more vinyl chloride copolymers having an inherent viscosity above 0.3 dl/gm., said mixture having an average inherent viscosity of from 0.3 to 0.45
Claim 14
Dependent Claim
13 words
dl/gm. 9. A powder coating composition as claimed in claim 5, wherein said
Claim 15
Dependent Claim
23 words
amine resin is a triazine formaldehye resin. 10. A powder coating composition as claimed in claim 5, wherein said amine resin is a
Claim 16
Dependent Claim
10 words
urea-formaldehyde resin. 11. A powder coating composition as claimed in
Claim 17
Dependent Claim
23 words
claim 5, wherein said polyamine is hexamethoxymethylmelamine. 12. A powder coating composition as claimed in claim 8, wherein said amine resin is a
Claim 18
Dependent Claim
10 words
triazine formaldehyde resin. 13. A powder coating composition as claimed
Claim 19
Dependent Claim
26 words
in claim 8, wherein said amine resin is a urea-formaldehyde resin. 14. A powder coating composition as claimed in claim 8, wherein said polyamine is hexamethoxymethylmelamine.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |