Patent US1853451A successfully refreshed from Google Patents.
US4046728A
Expired / Lapsed
US
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Polyvinyl chloride terpolymer powder coating composition
Assignee: EIDP Inc
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Filing: 1975-12-30
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Granted: 1977-09-06
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Expires: 1995-12-30
Abstract
Abstract A powder coating composition of powder particles having a size range of about 1-100 microns in which the powder particles are a blend of A. a polyvinyl chloride terpolymer of vinyl chloride/vinyl acetate/maleic acid and B. a polymer of ethylene/vinyl acetate/carbon monoxide; The powder can contain in addition to the above polymers a heat stabilizer such as a organometallic mercaptide, an epoxy resin, pigments, plasticizers, ultraviolet light-absorbing agents, polyethylene wax and a hard polymer such as an acrylic polymer; the powder coating composition is useful as a finish for metals such as tubing, wires, fence posts, lawn furniture, play equipment and the like.
Inventors
- 👤 Charles M. Harmuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:05
CPC Classifications
C; C09; C09D; C09D173/00; C09D127/00; C09D127/02; C09D127/04; C09D127/06; C08; C08L; C08L73/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
202 words
A powder coating composition of powder particles having a particle size range of about 1-100 microns; wherein the powder particles consist essentially of a binder of a blend of: A. 75-90% by weight of a polyvinyl chloride terpolymer consisting essentially of 1. 72-87% by weight, based on the weight of the terpolymer, of vinyl chloride, 2. 10-25% by weight, based on the weight of the terpolymer of vinyl acetate and 3. 0.1-3% by weight, based on the weight of the terpolymer, of maleic acid; wherein the terpolymer has a weight average molecular weight of about 20,000-125,000; and B. 10-25% by weight of a polymer consisting essentially of 1. 50-80% by weight, based on the weight of the polymer, of ethylene, 2. 15-35% by weight, based on the weight of the polymer of vinyl acetate, and 3. 5-15% by weight, based on the weight of the polymer, of carbon monoxide; wherein the polymer has a weight average molecular weight of about 100,000-400,000; wherein the powder particles contain in addition to the binder about 1-5% by weight of a heat stabilizer, 1-10%, by weight of a low molecular weight epoxy hydroxy polyether resin and 0.1-1% by weight of a low molecular weight polyethylene wax.
Claim 2
Dependent Claim
202 words
A powder coating composition of powder particles having a particle size range of about 1-100 microns; wherein the powder particles consist essentially of a binder of a blend of: A. 75-90% by weight of a polyvinyl chloride terpolymer consisting essentially of 1. 72-87% by weight, based on the weight of the terpolymer, of vinyl chloride, 2. 10-25% by weight, based on the weight of the terpolymer of vinyl acetate and 3. 0.1-3% by weight, based on the weight of the terpolymer, of maleic acid; wherein the terpolymer has a weight average molecular weight of about 20,000-125,000; and B. 10-25% by weight of a polymer consisting essentially of 1. 50-80% by weight, based on the weight of the polymer, of ethylene, 2. 15-35% by weight, based on the weight of the polymer of vinyl acetate, and 3. 5-15% by weight, based on the weight of the polymer, of carbon monoxide; wherein the polymer has a weight average molecular weight of about 100,000-400,000; wherein the powder particles contain in addition to the binder about 1-5% by weight of a heat stabilizer, 1-10%, by weight of a low molecular weight epoxy hydroxy polyether resin and 0.1-1% by weight of a low molecular weight polyethylene wax.
Claim 3
Dependent Claim
20 words
The powder coating composition of claim 1 containing pigments in a pigment to binder ratio of 0.1:100 to about 75:100.
Claim 4
Dependent Claim
15 words
The powder coating of claim 2 in which the heat stabilizer is an organometallic mercaptide.
Claim 5
Dependent Claim
18 words
The powder coating composition of claim 2 in which the epoxy resin is of bisphenol A and epichlorohydrin.
Claim 6
Dependent Claim
17 words
The powder coating composition of claim 2 containing about 0.1-2% by weight of an ultraviolet light-absorbing agent.
Claim 7
Dependent Claim
26 words
The coating composition of claim 5 in which the ultraviolet light-absorbing agent is a substituted benzophenone, a substituted benzotriazole, a substituted benzoate or a substituted acrylonitrile.
Claim 8
Dependent Claim
16 words
The coating composition of claim 2 containing about 0.5-20% by weight of a methyl methacrylate polymer.
Claim 9
Dependent Claim
14 words
The coating composition of claim 2 containing about 1-12% by weight of a plasticizer.
Claim 10
Dependent Claim
13 words
The coating composition of claim 8 in which the plasticizer is triisodecyl trimellitate.
Claim 11
Dependent Claim
175 words
A powder coating composition of powder particles having a particle size range of about 1-100 microns wherein the powder particles consists essentially of a blend of: A. 40-86.3% by weight of polyvinyl chloride terpolymer consisting essentially of 1. 77-82% by weight of vinyl chloride, 2. 17-22% by weight of vinyl acetate, 3. 1-2% by weight of maleic acid; B. 10-25% by weight of a polymer consisting essentially of 1. 56-76% by weight of ethylene, 2. 10-34% by weight of vinyl acetate, 3. 5-14% by weight of carbon monoxide, and C. 1-5% by weight of an organometallic mercaptide of a mixture of monobutyl tin mercaptide and dibutyl tin mercaptide, D. 1-10% by weight of a low molecular weight epoxyhydroxy polyether resin, E. 0.1-2% by weight of an ultraviolet light-absorbing agent of a substituted benzophenone, a substituted benzotriazole, a substituted benzoate or a substituted acrylonitrile, F. 0.1-1% by weight of a low molecular weight polyethylene wax, G. 0.5-20% by weight of a polymer of methyl methacrylate/butyl methacrylate/methacrylic acid, and H. 1-12% by weight of an ester plasticizer.
Claim 12
Dependent Claim
175 words
A powder coating composition of powder particles having a particle size range of about 1-100 microns wherein the powder particles consists essentially of a blend of: A. 40-86.3% by weight of polyvinyl chloride terpolymer consisting essentially of 1. 77-82% by weight of vinyl chloride, 2. 17-22% by weight of vinyl acetate, 3. 1-2% by weight of maleic acid; B. 10-25% by weight of a polymer consisting essentially of 1. 56-76% by weight of ethylene, 2. 10-34% by weight of vinyl acetate, 3. 5-14% by weight of carbon monoxide, and C. 1-5% by weight of an organometallic mercaptide of a mixture of monobutyl tin mercaptide and dibutyl tin mercaptide, D. 1-10% by weight of a low molecular weight epoxyhydroxy polyether resin, E. 0.1-2% by weight of an ultraviolet light-absorbing agent of a substituted benzophenone, a substituted benzotriazole, a substituted benzoate or a substituted acrylonitrile, F. 0.1-1% by weight of a low molecular weight polyethylene wax, G. 0.5-20% by weight of a polymer of methyl methacrylate/butyl methacrylate/methacrylic acid, and H. 1-12% by weight of an ester plasticizer.
Claim 13
Dependent Claim
14 words
The coating composition of claim 10 in which the polyester plasticizer is triisodecyl trimellitate.
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) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |