US5149237A
Expired / Lapsed
US
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Coated metal fastener and coating composition therefor
Assignee: Illinois Tool Works Inc
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Filing: 1991-02-22
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Granted: 1992-09-22
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Expires: 2011-02-22
Abstract
Abstract A coated metal fastener and a coating composition that has particular affinity for plaster materials and the like is disclosed. The composition that is applied to the fastener contains a copolymer of styrene and maleic anhydride and a thermoplastic resin, preferably polyvinyl acetate, in an inert organic solvent. The organic solvent can be an aromatic solvent, a ketone, a chlorohydrocarbon, or a mixture thereof. The composition is applied to the fastener by conventional methods and cured thereon at about ambient temperature.
Inventors
- 👤 William L. Gabriel
- 👤 Geronimo E. Lat
- 👤 Lawrence S. Shelton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:43
CPC Classifications
F; F16; F16B; F16B15/00; F16B15/0092; B; B05; B05D; B05D7/00; B05D7/14; C; C09; C09D; C09D135/00; C09D135/06; B05D2258/00; B05D2401/00; B05D2401/10; C08; C08L; C08L31/00; C08L31/02; C08L31/04; Y; Y10; Y10S; Y10S411/00; Y10S411/90; Y10S411/901; Y10S411/902; Y10S411/903; Y10S411/922
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
62 words
A coating composition for metal fasteners comprising: a copolymer of an aromatic monomer and a monomer with α,β unsaturation with carboxyl groups, said α,β unsaturated monomer selected from the group consisting of maleic acid, fumaric acid and maleic anhydride; a thermoplastic synthetic resin adhesive; and an inert organic solvent selected from the group consisting of aromatic solvents, ketones, chlorohydrocarbons, and mixtures thereof.
Claim 2
Dependent Claim
62 words
A coating composition for metal fasteners comprising: a copolymer of an aromatic monomer and a monomer with α,β unsaturation with carboxyl groups, said α,β unsaturated monomer selected from the group consisting of maleic acid, fumaric acid and maleic anhydride; a thermoplastic synthetic resin adhesive; and an inert organic solvent selected from the group consisting of aromatic solvents, ketones, chlorohydrocarbons, and mixtures thereof.
Claim 3
Dependent Claim
25 words
The coating composition of claim 1 wherein the aromatic monomer is selected from the group consisting of styrene, vinyl toluene, ρ-methylstyrene, α-methylstyrene, and divinyl benzene.
Claim 4
Dependent Claim
15 words
The coating composition of claim 2 wherein the monomer with α,β unsaturation is maleic anhydride.
Claim 5
Dependent Claim
12 words
The composition of claim 1 wherein the thermoplastic resin is polyvinyl acetate.
Claim 6
Dependent Claim
33 words
The coating composition of claim 3 wherein the aromatic monomer is styrene in a mole ratio of styrene monomer to maleic anhydride monomer of about 1 to 1 to about 3 to 1.
Claim 7
Dependent Claim
29 words
The coating composition of claim 1 wherein the ratio of the copolymer to the thermoplastic resin is about 20 to 80 to about 80 to 20 parts by weight.
Claim 8
Dependent Claim
24 words
The coating composition of claim 1 wherein the copolymer is present at about 4% to about 15% parts by weight of the coating composition.
Claim 9
Dependent Claim
25 words
The coating composition of claim 1 wherein the thermoplastic resin is present at about 3% to about 16% parts by weight of the coating composition.
Claim 10
Dependent Claim
21 words
The coating composition of claim 1 wherein the composition is about 70 percent to about 95 percent by weight organic solvent.
Claim 11
Dependent Claim
11 words
The composition of claim 1 wherein the aromatic solvent is toluene.
Claim 12
Dependent Claim
10 words
The composition of claim 1 wherein the ketone is methylethylketone.
Claim 13
Dependent Claim
18 words
The composition of claim 1 wherein the organic solvent is a mixture of toluene, methylethylketone and 1,1,1 trichloroethane.
Claim 14
Dependent Claim
19 words
The coating composition of claim 1 wherein the carboxyl groups of the monomer with α,β unsaturation are partially esterified.
Claim 15
Dependent Claim
58 words
A metal fastener that adheres to plaster with a polymeric coating, comprising: a copolymer of an aromatic monomer and a monomer with α,β unsaturation with carboxyl groups, said α,β unsaturated monomer being selected from the group consisting of maleic acid, maleic anhydride, and fumaric acid and a thermoplastic resin over substantially its entire metal surface and contiguous therewith.
Claim 16
Dependent Claim
58 words
A metal fastener that adheres to plaster with a polymeric coating, comprising: a copolymer of an aromatic monomer and a monomer with α,β unsaturation with carboxyl groups, said α,β unsaturated monomer being selected from the group consisting of maleic acid, maleic anhydride, and fumaric acid and a thermoplastic resin over substantially its entire metal surface and contiguous therewith.
Claim 17
Dependent Claim
12 words
The metal fastener of claim 14 wherein the aromatic monomer is styrene.
Claim 18
Dependent Claim
15 words
The metal fastener of claim 5 wherein the monomer with α,β unsaturation is maleic anhydride.
Claim 19
Dependent Claim
32 words
The metal fastener of claim 16 wherein the mole ratio of styrene monomer to maleic anhydride monomer in the copolymer is about 1 to about 1 to about 3 to about 1.
Claim 20
Dependent Claim
30 words
The metal fastener of claim 17 wherein the ratio of the first resin to the second resin is about 20 to 80 to about 80 to 20 parts by weight.
Claim 21
Dependent Claim
23 words
The metal fastener of claim 14 wherein the polymeric coating has a thickness in the range of about 0.2 to about 2 millimeters.
Claim 22
Dependent Claim
13 words
The metal fastener of claim 14 wherein the metal fastener is a nail.
Claim 23
Dependent Claim
13 words
The metal fastener of claim 14 wherein the metal fastener is a staple.
Claim 24
Dependent Claim
14 words
The metal fastener of claim 14 wherein the metal fastener is a truss plate.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1995-09-22 | 1996-03-23 | 1996-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-22 | 2000-03-23 | 2000-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-22 | 2004-03-23 | 2004-09-22 | $7700.00 | Window Closed / Lapsed |