US4968538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasion resistant coating and method of application
Assignee: Freecom Inc
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Filing: 1988-11-23
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Granted: 1990-11-06
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Expires: 2008-11-23
Abstract
Abstract A protective coating of finely divided abrasion resistant resin is diluted with a solvent and applied to a surface. The applied coating is cured to achieve either a single layer of inert dispersed in the resin, or two layers including a dense layer of inert in resin covered by a thin layer of resin, and to provide a glossy or matte appearance as desired.
Inventors
- 👤 John E. Freeman
- 👤 Ronald L. Clanton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:16
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D3/00; B05D3/02; B05D3/0209; B05D3/0254; B05D5/00; B05D5/02; C; C09; C09D; C09D5/00; C09D5/08; C23; C23C; C23C24/00; C23C24/08; C23C24/082; B05D2350/00; B05D2350/30; B05D2350/33; B05D2350/38; B05D2601/00; B05D2601/20; B05D2601/26; B05D3/12; B05D7/50; B05D7/52
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
171 words
A method for protecting metal surfaces, said method comprising the steps of: (a) sand blasting said surfaces to provide a prepared surface having a desired anchor pattern; (b) removing substantially all dust particulant material from said prepared surface; (c) mixing a corrosion resistant resin containing finely divided abrasion resistant particles with the appropriate hardening catalyst for said resin to form a base composition coating mixture; (d) diluting said coating mixture with a selected solvent to allow even application of said coating mixture; (e) applying said coating mixture to said prepared surface to obtain a desired thickness; and (f) curing said coating as applied at room temperature of 72° F. for 8 to 12 hours to obtain a coating on said surface having a first layer of concentrated abrasion resistant particles proximate said surface and a second layer of corrosion resistant resin over said first layer, wherein said corrosion resistant resin comprises 90% by weight finely divided ceramic particles and a 10% by weight bisophynol A epoxy resin including a polyamide elastomer.
Claim 2
Independent Claim
171 words
A method for protecting metal surfaces, said method comprising the steps of: (a) sand blasting said surfaces to provide a prepared surface having a desired anchor pattern; (b) removing substantially all dust particulant material from said prepared surface; (c) mixing a corrosion resistant resin containing finely divided abrasion resistant particles with the appropriate hardening catalyst for said resin to form a base composition coating mixture; (d) diluting said coating mixture with a selected solvent to allow even application of said coating mixture; (e) applying said coating mixture to said prepared surface to obtain a desired thickness; and (f) curing said coating as applied at room temperature of 72° F. for 8 to 12 hours to obtain a coating on said surface having a first layer of concentrated abrasion resistant particles proximate said surface and a second layer of corrosion resistant resin over said first layer, wherein said corrosion resistant resin comprises 90% by weight finely divided ceramic particles and a 10% by weight bisophynol A epoxy resin including a polyamide elastomer.
Claim 3
Dependent Claim
98 words
The invention of claim 1 including the steps of: (a) adding to the corrosion resistant resin and solvent mixture a solution comprising Novolac resin dissolved in 50% methyl-ethyl-ketone by weight of the Novolac, wherein the Novolac methyl-ethyl-ketone solution is added in the range of from 3.5% to 10% by weight of the base composition. (b) blending a polyglycol di-epoxide resin in the range of from 0.7% to 2.7% by weight of the base composition; and, (c) the addition of silicon dioxide in the ratio of from 4 to 20% based on the weight of the base resin-solvent mixture.
Claim 4
Dependent Claim
30 words
The method of claim 2 wherein the Novolac-methyl-ethyl-ketone solution added is 5.2% by weight of the base composition and the polyglycol added is 1.7% by weight of the base composition.
Claim 5
Independent Claim
188 words
A method for protecting metal surfaces, said method comprising the steps of: (a) sand blasting said surface to provide a prepared surface having the desired anchor pattern; (b) removing substantially all dust and particulant material from said prepared surface; (c) mixing a corrosion resistant resin with finely divided abrasion resistant particles with the appropriate hardening catalysts for said resin to form a base composition coating mixture wherein said corrosion resistant resin coating comprises 90% by weight finely divided ceramic particles and a 10% by weight bisophynal A epoxy resin including a polyamide elastomer; (d) diluting said coating mixture with a selected solvent to allow even application of said coating mixture; (e) applying said coating mixture to said prepared surface to obtain a desired a thickness; and, (f) sequentially curing said coating as applied first at room temperature (72° F.) for 1/2 to 1 hour and then at 250° F. to 300° F. for 1 to 11/2 hours to obtain a coating on said surface having a first layer of concentrated abrasion resistant particles proximate said surface and a second layer of corrosion resistant resin over said first layer.
Claim 6
Independent Claim
188 words
A method for protecting metal surfaces, said method comprising the steps of: (a) sand blasting said surface to provide a prepared surface having the desired anchor pattern; (b) removing substantially all dust and particulant material from said prepared surface; (c) mixing a corrosion resistant resin with finely divided abrasion resistant particles with the appropriate hardening catalysts for said resin to form a base composition coating mixture wherein said corrosion resistant resin coating comprises 90% by weight finely divided ceramic particles and a 10% by weight bisophynal A epoxy resin including a polyamide elastomer; (d) diluting said coating mixture with a selected solvent to allow even application of said coating mixture; (e) applying said coating mixture to said prepared surface to obtain a desired a thickness; and, (f) sequentially curing said coating as applied first at room temperature (72° F.) for 1/2 to 1 hour and then at 250° F. to 300° F. for 1 to 11/2 hours to obtain a coating on said surface having a first layer of concentrated abrasion resistant particles proximate said surface and a second layer of corrosion resistant resin over said first layer.
Claim 7
Dependent Claim
124 words
The invention of claim 4 further comprising the steps of: (a) adding to the base composition mixture a solution comprising Novolac resin dissolved in 50% methyl-ethyl-ketone by weight of the Novolac, wherein the Novolac methyl-ethyl-ketone solution is added in the range of from 3.5% to 10% by weight of the base resin-solvent; (b) blending in a polygylcol di-epoxide resin in the range of from 0.7% to 2.7% by weight of the base composition; and, (c) the addition of silicon dioxide (chemical name and family -- synthetic amorphous silica, synonyms-amorphous silicon dioxide -- silica gel silicic acid, chemical notation or structure -- SiO 2 . ×H 2 O) in the ratio of from 4 to 20% based on the weight of the base resin-solvent mixture.
Claim 8
Dependent Claim
30 words
The invention of claim 5 wherein the Novolac-methyl-ethyl-ketone solution added is 5.2% by weight of the base composition and the polyglycol added is 1.7% by weight of the base composition.
Claim 9
Independent Claim
157 words
A method for protecting metal surfaces, said method comprising the steps of: (a) sand blasting said surface to provide a prepared surface having the desired anchor pattern; (b) removing substantially all dust and particulant material from said prepared surface; (c) mixing a corrosion resistant resin finely divided abrasion resistant particles with the appropriate hardening catalysts for said resin to form a base composition coating mixture wherein said coating corrosion resistant resin comprises 90% by weight finely divided ceramic particles and a 10% by weight bisophynal A epoxy resin including a polyamide elastomer; (d) diluting said coating mixture with a selected solvent to allow even application of said coating mixture; (e) applying said coating mixture to said prepared surface to obtain a desired a thickness; and, (f) sequentially curing said coating at 250° F. to 300° F. for 1 to 11/2 hours to obtain a corrosion resistant coating having said abrasion resistant particles evenly dispersed through said resin.
Claim 10
Independent Claim
157 words
A method for protecting metal surfaces, said method comprising the steps of: (a) sand blasting said surface to provide a prepared surface having the desired anchor pattern; (b) removing substantially all dust and particulant material from said prepared surface; (c) mixing a corrosion resistant resin finely divided abrasion resistant particles with the appropriate hardening catalysts for said resin to form a base composition coating mixture wherein said coating corrosion resistant resin comprises 90% by weight finely divided ceramic particles and a 10% by weight bisophynal A epoxy resin including a polyamide elastomer; (d) diluting said coating mixture with a selected solvent to allow even application of said coating mixture; (e) applying said coating mixture to said prepared surface to obtain a desired a thickness; and, (f) sequentially curing said coating at 250° F. to 300° F. for 1 to 11/2 hours to obtain a corrosion resistant coating having said abrasion resistant particles evenly dispersed through said resin.
Claim 11
Dependent Claim
122 words
The invention of claim 7 further comprising the steps of: (a) Adding to the base composition a solution comprising Novolac resin dissolved in 50% methyl-ethyl-ketone by weight of the Novolac, wherein the Novolac methyl-ethyl-ketone solution is added in the range of form 3.5% to 10% by weight of the base resin-solvent. (b) blending in a polyglycol di-epoxide resin in the range of from 0.7% to 2.7% by weight of the base resin-solvent mixture. (c) the addition of silicon dioxide (chemical name and family -- synthetic amorphous silica, synonymsamorphous silicon dioxide -- silica gel silicic acid, chemical notation or structure -- SiO 2 . ×Hhd 2O) in the ratio of from 4 to 20% based on the weight of the base resin-solvent mixture.
Claim 12
Dependent Claim
30 words
The invention of claim 8 wherein the Novolac-methyl-ethyl-ketone solution added is 5.2% by weight of the base composition and the polyglycol added is 1.7% by weight of the base composition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-11-05 | 1994-05-07 | 1994-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-05 | 1998-05-07 | 1998-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-05 | 2002-05-07 | 2002-11-06 | $7700.00 | Window Closed / Lapsed |