Patent US4968538A successfully refreshed from Google Patents.
US4968538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasion resistant coating and method of application
Assignee: Freecom Inc
•
Filing: 1988-11-23
•
Granted: 1990-11-06
•
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 03:56
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.
References Cited (Backward Citations)
US3042545A
Cited
US3156580A
Cited
US3507357A
Cited
US3762939A
Cited
US4179542A
Cited
US4180166A
Cited
US4312902A
Cited
US4560579A
Cited
US4423094A
Cited
US4620994A
Cited
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 |