WO1998001236A1 - Method for abating bio-hazardous materials found in coatings - Google Patents
Method for abating bio-hazardous materials found in coatings Download PDFInfo
- Publication number
- WO1998001236A1 WO1998001236A1 PCT/US1996/011277 US9611277W WO9801236A1 WO 1998001236 A1 WO1998001236 A1 WO 1998001236A1 US 9611277 W US9611277 W US 9611277W WO 9801236 A1 WO9801236 A1 WO 9801236A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- formulation
- encapsulating
- substrate
- coated substrate
- coating
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000000576 coating method Methods 0.000 title claims abstract description 29
- 239000000383 hazardous chemical Substances 0.000 title description 18
- 239000000203 mixture Substances 0.000 claims abstract description 51
- 238000009472 formulation Methods 0.000 claims abstract description 46
- 239000000758 substrate Substances 0.000 claims abstract description 38
- 239000011248 coating agent Substances 0.000 claims abstract description 22
- 239000010425 asbestos Substances 0.000 claims abstract description 17
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 17
- 239000013618 particulate matter Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 9
- 238000005299 abrasion Methods 0.000 claims abstract description 8
- 239000011148 porous material Substances 0.000 claims abstract description 7
- 230000001680 brushing effect Effects 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 150000003673 urethanes Chemical class 0.000 claims description 5
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims 2
- 230000000149 penetrating effect Effects 0.000 claims 2
- 239000002904 solvent Substances 0.000 claims 2
- 230000000979 retarding effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 7
- 239000011236 particulate material Substances 0.000 abstract description 4
- 238000005538 encapsulation Methods 0.000 abstract 1
- 239000003973 paint Substances 0.000 description 11
- 239000013056 hazardous product Substances 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000037406 food intake Effects 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 231100000206 health hazard Toxicity 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 208000019838 Blood disease Diseases 0.000 description 1
- 241000282461 Canis lupus Species 0.000 description 1
- 206010027439 Metal poisoning Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 206010043376 Tetanus Diseases 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 208000014951 hematologic disease Diseases 0.000 description 1
- 208000018706 hematopoietic system disease Diseases 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 229910000464 lead oxide Inorganic materials 0.000 description 1
- 208000008127 lead poisoning Diseases 0.000 description 1
- 230000018984 mastication Effects 0.000 description 1
- 238000010077 mastication Methods 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/0066—Disposal of asbestos
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/20—Agglomeration, binding or encapsulation of solid waste
- B09B3/21—Agglomeration, binding or encapsulation of solid waste using organic binders or matrix
Definitions
- the present invention relates to a method for encapsulating, with a impact and abrasion resistant formulation, bio-hazardous particulate matter, such as asbestos, lead, and metallic oxides.
- Still another object of the invention is to provide a method for abating bio-hazardous materials sealing the pre-existing bio-hazardous materials before they loose to the environment by encapsulating the hazardous material using composition of urethanes and metallics.
- the present invention is primarily focussed on the abatement of asbestos. However, the general application of this method is not solely limited to the abatement of asbestos, rather to any material that potentially presents a bio-hazard to the environment . Other bio- hazards abated by this method include, but are not limited to, lead particles found in lead based paints, and metallic oxides such as rust.
- the present method uses a trade secret composition containing urethanes and metallics, with additional trade secret additives that improve the encapsulating properties.
- the composition is commercially available from Superior Products International II, Inc., 6459 Universal Avenue, Kansas City, Missouri 64120, under the product name RUST GRIP, incorporated herein by reference: see appendix "A” .
- the resulting formulation provides an impact and abrasive resistant finish over existing coatings that contain hazardous materials.
- the method of the present invention uses this formulation of a combination of high performance urethanes and additives in a single component unit to give the formulation the ability to encapsulate, and seal any surface.
- the prior art methods that require the coated surfaces be prepped before applying any sealing or overlay material.
- the prior art methods require a cleaning, scraping, removing, or the like, of any excess, peeling, or flaking of the previous coating. This procedure allows the hazardous materials, in particulate form, to contaminate the environment. Additionally, this procedure requires further extensive and expensive clean-up to insure environmental security and safety.
- the present method does not require the expensive, extensive, and time consuming steps of preparing the coated surfaces.
- the present method applies the formulation directly to the coated substrate surface.
- the method applies the formulation in a manner consistent with many other general purpose coatings, however, the method is novel because it produces the new and unexpected result of encircling, encapsulating and bonding otherwise bio-hazardous particulate matter to the substrate surface.
- the method of the present invention involves providing the formulation set forth above.
- the application of the formulation involves the simple procedure of coating the surface of the coated substrate. This is accomplished in various conventional manners, such as, brushing, rolling, or spraying. As stated above, it is not necessary to prepare the surface in any extensive manner, however, the method requires that the surface be completely dry. Additionally, a light dust removal or vacuuming may enhance the effectiveness, although not required.
- the formulation once initially applied, is allowed time to percolate through the coating and bond to the substrate surface.
- the formulation percolates through the pores of the coating on the substrate surface.
- the formulation also expands internally of the pores by absorbing atmospheric moisture.
- the expansion also provides the vehicle with which the formulation also attaches to the particulate matter that forms the bio-hazard.
- the attachment virtually causes the formulation to encircle the particulate matter and bond the particulate matter to the substrate surface.
- the method also allows the formulation to cure for a first period of time not to exceed four hours.
- the formulation is re- applied, re-percolated, and re-cured at least for one additional application after the initial application.
- the formulation has a property that once it is allowed to completely dry out, the ability to apply a second coat is lost.
- the formulation is most effective when at least two complete applications of the formulation are administered.
- the second or subsequent application is allowed to cure for a time period also not to exceed four hours unless the seconds or subsequent application is the final application.
- the final application is allowed to completely cure or dry, generally six to eight hours. Once the final application is completely cured, the formulation forms a encapsulating seal around all particles of the hazardous material, bonds to the substrate surface, and produces a virtually impact resistant shell that maintains integrity exceeding impacts of 200 psi. Further, this shell is also abrasion resistant on the order of 18 mg/kHz loss.
- the standard protocol generally requires abrasion resistance to be within the range limits of 100-150 mg/kHz, or less to be acceptable.
- the bio-hazardous materials of the coating on a substrate is abated and the surface is impact and abrasion resistant.
- the particulate materials such as asbestos
- the particulate materials is no longer a substantial threat to children, or anyone, during the normal course of use of the substrate. That is, the asbestos particles will not be released as air borne contaminants using applicant's method when the asbestos coated substrate is used in a normal fashion.
- any other potentially bio- hazardous coating e.g., lead based paint
- any other potentially bio- hazardous coating e.g., lead based paint
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The abatement of bio-hazardous particulate materials, such as asbestos, has a high priority for providing children with a future. The method of the present invention involves abating such materials by encapsulating them in a simple and effective manner. The method uses a special formulation that when applied to a potentially bio-hazardous surface, such a coating on a substrate, seeps into the pores of the surface, encircles and encapsulates the particles. The formulation also bonds the encapsulated particles to the surface of the substrate carrying the coating. The results of the method are complete encapsulation of potentially bio-hazardous particulate matter found in a coating on a substrate, bonding of the encapsulated particles to the surface of the substrate, and finally, the sealed coating is resistant to impact and abrasion.
Description
METHOD FOR ABATING BIO-HAZARDOUS MATERIALS FOUND IN
COATINGS BACKGROUND OF THE INVENTION
1. FIELD OF THE INVENTION The present invention relates to a method for encapsulating, with a impact and abrasion resistant formulation, bio-hazardous particulate matter, such as asbestos, lead, and metallic oxides.
2. DESCRIPTION OF THE PRIOR ART Many attempts have been embarked upon for reducing the health hazards of particulate materials found in and around building structures. Specifically, the presence of asbestos, lead, and rust, to name a few, have been found to be extremely dangerous to small children. The small children generally do not realize the health and bio-hazards associated with the ingestion or inhalation of the particles of these materials. Most often, these small children in an inquisitive mindset will eat flaking asbestos, peeling paint and other items. The end results are not favorable to the children, their parents, and society as a whole. In recent years, a number of patents have issued offering remedies to this problem affecting children. For instance, U.S. Patent No. 3,870,550, issued March 11, 1975 to Mann, discloses a method of preventing the ingestion of lead based paints by applying a bitter tasting solution to the paint, so that the mere taste will discourage children from eating at the eventual paint chips. U.S. Patent No. 3,900,611, issued August 19, 1975 to Corbett et al . , discloses a applied solution of a surfactant and a polymer for reducing dust particulate matter from becoming airborne. U.S. Patent No. 4,067,840, issued January 10, 1978 to Wolf, discloses a chromogen in the form of icrocapsules that upon mastication or ingestion, will change colors signaling that the chromogen has been masticated or ingested. U.S.
Patent No. 4,112,191, issued September 5, 1978 to Anderson discloses a digestible coating for lead based paint coatings form of certain metallic salts the when simultaneously ingested with the lead based paint, will precipitate the lead in an insoluble and indigestible form. U.S. Patent No. 4,748,051, issued May 31, 1988 to Songer et al . , discloses removing the bulk of hazardous material for an area and subsequently coating with a latex type material that produces a tacky films on drying. U.S. Patent No. 5,466,489, issued November 14, 1985 to Stahl, discloses a method of coating in-situ lead based paints and asbestos with an environmental encasement. U.S. Patent No. 5,478,604, issued December 26,1995 to Leeper, discloses a coating for lead based paint for reducing the digestion and absorption of lead from the intestinal tract. Japan Patent Document No. 61- 162,567, published July 23, 1986 to Iwato, discloses a multiple coating compositions for producing smooth laminated finishes. Japan Patent Document No. 62- 260,071, published November 12, 1987 to Suzuki et al . , discloses a process for treating the surfaces of tin or tin alloy plated materials.
None of the above inventions and patents, taken either singly or in combination, is seen to describe the instant invention as claimed. More specifically, it is noted that the aforementioned prior art references do not provide any resistance to impact or abrasion, which would prevent the particulate materials from becoming health hazards . SUMMARY OF THE INVENTION
For many years, children have been victimized by the use of cost effective materials for various purposes. Specifically, school buildings and structures have been fireproofed with asbestos; finishes have routinely used lead based paints; and playground equipment has been
constructed with less than adequate rust protecting coatings. The results are devastating; children are subjected to contracting tetanus, lead poisoning, blood disorders, and even cancer from their environment because of the numerous bio-hazardous materials they come into contact .
Accordingly, it is a principal object of the invention to provide a method for abating bio-hazardous materials.
It is another object of the invention to provide a method for abating bio-hazardous materials sealing the pre-existing bio-hazardous materials before they loose to the environment .
It is a further object of the invention to provide a method for abating bio-hazardous materials sealing the pre-existing bio-hazardous materials before they loose to the environment by encapsulating the hazardous material.
Still another object of the invention is to provide a method for abating bio-hazardous materials sealing the pre-existing bio-hazardous materials before they loose to the environment by encapsulating the hazardous material using composition of urethanes and metallics.
It is an object of the invention to provide improved elements and arrangements thereof in an apparatus for the purposes described which is inexpensive, dependable and fully effective in accomplishing its intended purposes. These and other objects of the present invention will become readily apparent upon further review of the following specification.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The present invention is primarily focussed on the abatement of asbestos. However, the general application of this method is not solely limited to the abatement of asbestos, rather to any material that potentially presents a bio-hazard to the environment . Other bio- hazards abated by this method include, but are not
limited to, lead particles found in lead based paints, and metallic oxides such as rust.
The present method uses a trade secret composition containing urethanes and metallics, with additional trade secret additives that improve the encapsulating properties. The composition is commercially available from Superior Products International II, Inc., 6459 Universal Avenue, Kansas City, Missouri 64120, under the product name RUST GRIP, incorporated herein by reference: see appendix "A" . The resulting formulation provides an impact and abrasive resistant finish over existing coatings that contain hazardous materials.
The method of the present invention uses this formulation of a combination of high performance urethanes and additives in a single component unit to give the formulation the ability to encapsulate, and seal any surface. Unlike the prior art methods that require the coated surfaces be prepped before applying any sealing or overlay material. The prior art methods require a cleaning, scraping, removing, or the like, of any excess, peeling, or flaking of the previous coating. This procedure allows the hazardous materials, in particulate form, to contaminate the environment. Additionally, this procedure requires further extensive and expensive clean-up to insure environmental security and safety.
The present method does not require the expensive, extensive, and time consuming steps of preparing the coated surfaces. The present method applies the formulation directly to the coated substrate surface. The method applies the formulation in a manner consistent with many other general purpose coatings, however, the method is novel because it produces the new and unexpected result of encircling, encapsulating and
bonding otherwise bio-hazardous particulate matter to the substrate surface. The method of the present invention involves providing the formulation set forth above. The application of the formulation involves the simple procedure of coating the surface of the coated substrate. This is accomplished in various conventional manners, such as, brushing, rolling, or spraying. As stated above, it is not necessary to prepare the surface in any extensive manner, however, the method requires that the surface be completely dry. Additionally, a light dust removal or vacuuming may enhance the effectiveness, although not required.
The formulation once initially applied, is allowed time to percolate through the coating and bond to the substrate surface. The formulation percolates through the pores of the coating on the substrate surface. During the percolation, the formulation also expands internally of the pores by absorbing atmospheric moisture. The expansion also provides the vehicle with which the formulation also attaches to the particulate matter that forms the bio-hazard. The attachment virtually causes the formulation to encircle the particulate matter and bond the particulate matter to the substrate surface. During the percolating of the formulation, the method also allows the formulation to cure for a first period of time not to exceed four hours. The formulation is re- applied, re-percolated, and re-cured at least for one additional application after the initial application. The formulation has a property that once it is allowed to completely dry out, the ability to apply a second coat is lost. The formulation is most effective when at least two complete applications of the formulation are administered. The second or subsequent application is allowed to cure for a time period also not to exceed four
hours unless the seconds or subsequent application is the final application.
The final application is allowed to completely cure or dry, generally six to eight hours. Once the final application is completely cured, the formulation forms a encapsulating seal around all particles of the hazardous material, bonds to the substrate surface, and produces a virtually impact resistant shell that maintains integrity exceeding impacts of 200 psi. Further, this shell is also abrasion resistant on the order of 18 mg/kHz loss. The standard protocol generally requires abrasion resistance to be within the range limits of 100-150 mg/kHz, or less to be acceptable.
The bio-hazardous materials of the coating on a substrate is abated and the surface is impact and abrasion resistant. The particulate materials, such as asbestos, is no longer a substantial threat to children, or anyone, during the normal course of use of the substrate. That is, the asbestos particles will not be released as air borne contaminants using applicant's method when the asbestos coated substrate is used in a normal fashion. Likewise, any other potentially bio- hazardous coating (e.g., lead based paint) when encapsulated by the present method is rendered virtually harmless to anyone, particularly children.
It is to be understood that the present invention is not limited to the sole embodiment described above, but encompasses any and all embodiments within the scope of the following claims.
Claims
1. A method of encapsulating bio-hazardous particulate matter contained in the coating of a coated substrate comprising the steps of : A: providing an encapsulating formulation having solvent -based urethanes and metallics composition; B: applying the encapsulating formulation to the coated substrate; C: percolating the encapsulating formulation through the coating of the coated substrate, the encapsulating formulation bonding to the particles of the bio-hazardous particulate matter and the substrate; D: curing the formulation for a first predetermined period of time; E: repeating steps B and C; and
F: re-curing the formulation for a second predetermined length of time; whereby, upon re-curing, the encapsulating formulation, bonded to the particulate matter and the substrate, encapsulates and seals the particulate matter to the substrate; whereby, the encapsulating formulation forming an impact and abrasion resistant barrier on the coated substrate; and whereby the particulate matter is one of the group consisting of asbestos of flame retarding coatings, lead of lead based coatings, and metallic oxides.
2. The method according to claim 1, said step of applying is selected from the group consisting of brushing, rolling, and spraying.
3. The method according to claim 2, said step of applying includes brushing the formulation onto the coated substrate.
4. The method according to claim 2, said step of applying includes rolling the formulation onto the coated substrate .
5. The method according to claim 2, said step of applying includes spraying the formulation onto the coated substrate .
6. The method according to claim 1, said step of percolating further comprising the steps of : penetrating the pores of the coating and the substrate; expanding the encapsulating formulation in the penetrated pores; and encircling the particulate matter present in the coating on the coated substrate .
7. The method according to claim 6, said step of applying is selected from the group consisting of brushing, rolling, and spraying.
8. The method according to claim 1, the first predetermined time period is equal to or less than four hours.
9. A method of encapsulating bio-hazardous particulate asbestos matter contained in the coating of a coated substrate comprising the steps of:
A: providing an encapsulating formulation having solvent -based urethanes and metallics composition;
B: applying the encapsulating formulation to the coated substrate;
C: percolating the encapsulating formulation through the coating of the coated substrate, the encapsulating formulation bonding to the asbestos particles of the bio-hazardous particulate asbestos matter and the substrate; D: curing the formulation for a first predetermined period of time; E: repeating steps B and C; and
F .- re-curing the formulation for a second predetermined length of time; whereby, upon re-curing, the encapsulating formulation, bonded to the particulate asbestos matter and the substrate, encapsulates and seals the particulate asbestos matter to the substrate,- whereby, the encapsulating formulation forming an impact and abrasion resistant barrier on the coated substrate .
10. The method according to claim 1, said step of applying is selected from the group consisting of brushing, rolling, and spraying.
11. The method according to claim 10, said step of applying includes brushing the formulation onto the coated substrate .
12. The method according to claim 10, said step of applying includes rolling the formulation onto the coated substrate .
13. The method according to claim 10, said step of applying includes spraying the formulation onto the coated substrate .
14. The method according to claim 9, said step of percolating further comprising the steps of: penetrating the pores of the coating and the substrate; expanding the encapsulating formulation in the penetrated pores; and encircling the particulate matter present in the coating on the coated substrate.
15. The method according to claim 14, said step of applying is selected from the group consisting of brushing, rolling, and spraying.
16. The method according to claim 9, the first predetermined time period is equal to or less than four hours .
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU66749/96A AU6674996A (en) | 1996-07-08 | 1996-07-11 | Method for abating bio-hazardous materials found in coatings |
| PCT/US1996/011277 WO1998001236A1 (en) | 1996-07-08 | 1996-07-11 | Method for abating bio-hazardous materials found in coatings |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| USNOTFURNISHED | 1987-05-22 | ||
| US08/677,558 US5695812A (en) | 1996-07-08 | 1996-07-08 | Method for abating bio-hazardous materials found in coatings |
| PCT/US1996/011277 WO1998001236A1 (en) | 1996-07-08 | 1996-07-11 | Method for abating bio-hazardous materials found in coatings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1998001236A1 true WO1998001236A1 (en) | 1998-01-15 |
Family
ID=26791125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1996/011277 WO1998001236A1 (en) | 1996-07-08 | 1996-07-11 | Method for abating bio-hazardous materials found in coatings |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO1998001236A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5143757A (en) * | 1989-03-17 | 1992-09-01 | SKINNER George | Encapsulating a substrate |
| US5376705A (en) * | 1991-09-18 | 1994-12-27 | Transcontinental Marketing Group, Inc. | One coat protective system for a surface |
-
1996
- 1996-07-11 WO PCT/US1996/011277 patent/WO1998001236A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5143757A (en) * | 1989-03-17 | 1992-09-01 | SKINNER George | Encapsulating a substrate |
| US5376705A (en) * | 1991-09-18 | 1994-12-27 | Transcontinental Marketing Group, Inc. | One coat protective system for a surface |
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