US5256703A
Expired / Lapsed
US
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Abrasive propellant for cleaning of surfaces and machinery
Assignee: TWIN RIVERS EN6
•
Filing: 1991-09-12
•
Granted: 1993-10-26
•
Expires: 2011-09-12
Abstract
Abstract Particles of abrasives such as Garnet, Staurolite or Wollastonite bound to polymer are used as propellant particles to remove undesired materials from surfaces such as floors, walls, ceilings, machinery etc. For example, soil, paint, oil, grease etc. can be thereby removed.
Inventors
- 👤 Paul F. Hermann
- 👤 William R. Lynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:49
CPC Classifications
B; B24; B24C; B24C7/00; B24C7/0092; B24C11/00; B24C9/00; B24C9/006; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D3/34; B24D3/346; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0895; C08G18/28; C08G18/40; C08G18/48; C08G18/4833; C08G2110/00; C08G2110/0083; Y; Y02; Y02P; Y02P70/00; Y02P70/10
Claims Analysis
Total Claims: 51
Claim 1
Independent Claim
20 words
Composition comprising the reaction product of a water foamable prepolymer abrasive, inorganic mineral and water to increase abrasiveness or density.
Claim 2
Dependent Claim
20 words
Composition comprising the reaction product of a water foamable prepolymer abrasive, inorganic mineral and water to increase abrasiveness or density.
Claim 3
Dependent Claim
22 words
The composition of claim 1 wherein the mineral is selected from the group consisting of alkaline earth, aluminum and silicon containing minerals.
Claim 4
Dependent Claim
13 words
The composition of claim 1 wherein the mineral is an alkaline earth sulphate.
Claim 5
Dependent Claim
16 words
The composition of claim 1 wherein the alkaline earth sulphate is calcium sulphate or barium sulfate.
Claim 6
Dependent Claim
32 words
The composition of claim 1 wherein the mineral is at least one selected from the group consisting of garnet, calcium metasilicate, barium metasilicate, quartz, diatomaceous earth, sands, carborundum and iron aluminum silicate.
Claim 7
Dependent Claim
12 words
The composition of claim 1 wherein the prepolymer is a urethane prepolymer.
Claim 8
Dependent Claim
10 words
The composition of claim 1 comprising an isocyanate-capped water-foamable prepolymer.
Claim 9
Dependent Claim
10 words
The composition of claim 1 further comprising an acrylic latex.
Claim 10
Dependent Claim
9 words
The composition of claim 1 further comprising a surfactant.
Claim 11
Dependent Claim
8 words
The composition of claim 1 further comprising silane.
Claim 12
Dependent Claim
9 words
The composition of claim 1 further comprising a germicide.
Claim 13
Dependent Claim
9 words
The composition of claim 1 further comprising an acid.
Claim 14
Dependent Claim
24 words
The composition of claim 1 for use as a particulate propellant to remove foreign substances adhering to a surface comprising a lipophilic/hydrophilic urethane-mineral interpolymer.
Claim 15
Dependent Claim
34 words
Composition for a lipophilic/hydrophilic abrasive propellant for removing foreign substances adhering to a surface comprising a reaction product of a) a water-foamable prepolymer; b) water; c) a surfactant; and d) an abrasive, inorganic mineral.
Claim 16
Dependent Claim
34 words
Composition for a lipophilic/hydrophilic abrasive propellant for removing foreign substances adhering to a surface comprising a reaction product of a) a water-foamable prepolymer; b) water; c) a surfactant; and d) an abrasive, inorganic mineral.
Claim 17
Dependent Claim
11 words
The composition of claim 14 comprising a water-foamable isocyanate capped prepolymer.
Claim 18
Dependent Claim
19 words
The composition of claim 14 comprising a linear isocyanate capped prepolymer having a reactive functionality of less than 2.
Claim 19
Dependent Claim
11 words
The composition of claim 14 further comprising an acrylic latex polymer.
Claim 20
Dependent Claim
9 words
The composition of claim 14 further comprising a silane.
Claim 21
Dependent Claim
15 words
The composition of claim 14 comprising a cell formation regulating amount of surfactant and water.
Claim 22
Dependent Claim
14 words
The composition of claim 14 wherein the surfactant is a non-ionic surface active agent.
Claim 23
Dependent Claim
14 words
The composition of claim 14 wherein the surfactant comprises 0.5-5% by weight of prepolymer.
Claim 24
Dependent Claim
16 words
The composition of claim 1 or 14 wherein the prepolymer is prepared from a toluene diisocyanate.
Claim 25
Dependent Claim
17 words
The composition of claim 14 wherein the prepolymer is a polyether glycol reacted with 2-4-26 toluene diisocynanate.
Claim 26
Dependent Claim
21 words
The composition of claim 14 wherein the prepolymer is derived from a difunctional, active hydrogen-containing initiator and one or more 1,2-epoxides.
Claim 27
Dependent Claim
16 words
The composition of claim 14 wherein the prepolymer is derived from polyethylene glycol and toluene diisocyanate.
Claim 28
Dependent Claim
58 words
The composition of claim 1 or 14 wherein the prepolymer is prepared from a substantially linear polyether polyol of the formula H (OCH.sub.2 CH).sub.m O CH.sub.2 CH.sub.2 CH.sub.2 O (CH.sub.2 CH.sub.2 O).sub.n H wherein m or n is an integer from 2 to about 250 and m and n together is an integer from 3 to about 500.
Claim 29
Dependent Claim
28 words
The composition of claim 26 wherein m or n is approximately 5 to 80 and m and n together is an integer of approximately 20 to about 200.
Claim 30
Dependent Claim
19 words
The composition of claim 26 wherein the polyol is of an average molecular weight of approximately 200 to 20,000.
Claim 31
Dependent Claim
19 words
The composition of claim 26 wherein the polyol is of an average molecular weight of approximately 800 to 10,000.
Claim 32
Independent Claim
53 words
A method for preparing a lipophilic/hydrophilic propellant for removing foreign substances adhering to a surface comprising a) reacting and foaming a water-foamable polyether prepolymer with water wherein the water provided is an aqueous medium containing an abrasive, inorganic mineral; and b) curing the foamed product of step a) at room temperature until tack-free.
Claim 33
Independent Claim
53 words
A method for preparing a lipophilic/hydrophilic propellant for removing foreign substances adhering to a surface comprising a) reacting and foaming a water-foamable polyether prepolymer with water wherein the water provided is an aqueous medium containing an abrasive, inorganic mineral; and b) curing the foamed product of step a) at room temperature until tack-free.
Claim 34
Dependent Claim
13 words
The method of claim 30 wherein the prepolymer is an isocyanate capped urethane.
Claim 35
Dependent Claim
18 words
The method of claim 30 wherein the water is approximately 6.5 to 400 molar excess to the prepolymer.
Claim 36
Dependent Claim
13 words
The method of claim 30 wherein the curing time is approximately 20 minutes.
Claim 37
Dependent Claim
22 words
The method of claim 30 further comprising comminuting the polymer product wherein the comminuted product is cured for an additional 6-8 hours.
Claim 38
Dependent Claim
10 words
The method of claim 30 further comprising using a catalyst.
Claim 39
Dependent Claim
14 words
The method of claim 30 wherein the reaction is conducted at about 100°-120° F.
Claim 40
Dependent Claim
37 words
The method of claim 30 wherein the aqueous solution comprises a mineral selected from the group consisting of at least one of quartz, sand, carborundum, diatomaceous earth, calcium metasilicate, barium metasilicate, iron aluminum silicate garnet and gypsum.
Claim 41
Dependent Claim
14 words
The method of claim 30 wherein the aqueous solution comprises a mineral and surfactant.
Claim 42
Dependent Claim
12 words
The method of claim 30 wherein the aqueous solution comprises calcium metasilicate.
Claim 43
Dependent Claim
24 words
The polymeric material of claim 14 consisting by weight of 1-90% mineral; 2-30% water; 0.5-1.10% surfactant; and 4-20% polyether polyol prepolymer prior to curing.
Claim 44
Dependent Claim
20 words
The polymeric material of claim 14 further consisting by weight of 0.5-2% thickener; 0.1-2.8% coupling agent; and 5%-30% active ingredient.
Claim 45
Dependent Claim
27 words
The polymeric material of claim 41 wherein the active ingredient is selected from the group consisting of germicide, acids, paint stripper, oils, cleansers, detergents and aromatic materials.
Claim 46
Dependent Claim
21 words
A method for removing foreign substances from a surface comprising impacting the material of claim 14 under pressure onto said surface.
Claim 47
Dependent Claim
45 words
A method for removing foreign substances from the polymer material of claim 14 comprising adding the material to water; allowing the material to sink in the water while releasing the foreign substance into the water; and permitting separation of the polymer and the foreign substance.
Claim 48
Dependent Claim
67 words
Method for removing foreign solid substances from the polymer material of claim 14 comprising 1) screening oily foam granules containing solid foreign substance through specific screen size permitting passage of the polymer material, 2) wetting the screened material to swell the polymer material to a size greater the screen size in 1), and 3) rescreening as in 1) to separate polymer material from the solid foreign substance.
Claim 49
Dependent Claim
28 words
The polymeric material of claim 14 consisting by weight of 14.6% water; 0.91% F88 (10% solution); 0.3% VEE GUM; 61% Starblast 22.88% Wollastonite 20% Trepolymer prior to curing.
Claim 50
Dependent Claim
33 words
The polymeric material of claim 14 consisting by weight of 8.79% water; 19.32% VEE GUM (5% solution) 52.25% Garnet #50; 0.261 Silane A1120 19.08% Wollastonite 13% Yellow Base 17.45% Trepol prior to curing.
Claim 51
Dependent Claim
32 words
The polymeric material of claim 14 consisting by weight of 30H 2 O; 0.5% Tamol SN; 2.44% surfactant (10% aqueous solution); 66.56% Wollastonite; 0.5% Green Base; and 21.05 Trepol prior to curing.
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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) | 1996-10-25 | 1997-04-26 | 1997-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-25 | 2001-04-26 | 2001-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-25 | 2005-04-26 | 2005-10-26 | $7700.00 | Window Closed / Lapsed |