US4242842A
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US
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Precision polishing suspension and method for making same
Assignee: La Pierre Synthetique Baikowski SA
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Filing: 1979-08-08
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Granted: 1981-01-06
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Expires: 1999-08-08
Abstract
Abstract A permanent precision liquid polishing suspension, and a method for making same, comprising fine abrasive polishing powders held in a suspension medium comprising an aqueous glycerine based composition thickened by a carboxy polymethylene polymer.
Inventors
- 👤 Paul J. Yancey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:38
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1454; C09K3/1463
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
77 words
A substantially non-toxic precision liquid polishing composition having nondrying characteristics consisting essentially of a fine abrasive polishing powder having a nominal particle size of less than about 5 microns essentially permanently suspended in a viscuous liquid medium comprising water, glycerine and a carboxy polymethylene polymer thickening agent wherein the polishing powder makes up less than about 20 weight-percent of the entire composition and wherein the glycerine makes up at least about 25 weight-percent of the entire composition.
Claim 2
Dependent Claim
77 words
A substantially non-toxic precision liquid polishing composition having nondrying characteristics consisting essentially of a fine abrasive polishing powder having a nominal particle size of less than about 5 microns essentially permanently suspended in a viscuous liquid medium comprising water, glycerine and a carboxy polymethylene polymer thickening agent wherein the polishing powder makes up less than about 20 weight-percent of the entire composition and wherein the glycerine makes up at least about 25 weight-percent of the entire composition.
Claim 3
Dependent Claim
28 words
A polishing composition according to claim 1 wherein the polishing powder is a de-agglomerated alumina polishing powder having a nominal particle size of less than about 3 microns.
Claim 4
Dependent Claim
25 words
A polishing composition according to claim 1 wherein the water is provided at a higher weight-percentage of the entire composition than that of the glycerine.
Claim 5
Dependent Claim
23 words
A polishing composition according to claim 3 additionally comprising a neutralizing agent taken from the class consisting of inorganic hydroxides and organic amines.
Claim 6
Dependent Claim
29 words
A polishing composition according to claim 4 wherein said neutralizing agent is present in an amount to provide a final pH of the composition from about 7 to 8.
Claim 7
Dependent Claim
74 words
A substantially non-toxic essentially permanent precision liquid polishing composition suspension comprising from about 9.8 weight-percent to about 15.1 weight-percent de-agglomerated calcined alumina powder having a nominal particle size of less than about 5 microns, from about 38.2 weight-percent to about 56.5 weight-percent water, from about 30 weight-percent to about 48.1 weight-percent glycerine, from about 0.10 weight-percent to about 0.39 weight-percent carboxy polymethylene polymer and from about 0 to about 0.47 weight-percent organic amine base.
Claim 8
Dependent Claim
74 words
A substantially non-toxic essentially permanent precision liquid polishing composition suspension comprising from about 9.8 weight-percent to about 15.1 weight-percent de-agglomerated calcined alumina powder having a nominal particle size of less than about 5 microns, from about 38.2 weight-percent to about 56.5 weight-percent water, from about 30 weight-percent to about 48.1 weight-percent glycerine, from about 0.10 weight-percent to about 0.39 weight-percent carboxy polymethylene polymer and from about 0 to about 0.47 weight-percent organic amine base.
Claim 9
Dependent Claim
57 words
A substantially non-toxic essentially permanent precision polishing composition suspension having nondrying characteristics consisting essentially of about 15 weight-percent de-agglomerated calcined alumina polishing powder having a nominal particle size of less than about 3 microns, about 53 weight-percent water, about 32 weight-percent glycerine, about 0.20 weight-percent carboxy polymethylene polymer and about 0.2 weight-percent of an organic amine base.
Claim 10
Dependent Claim
57 words
A substantially non-toxic essentially permanent precision polishing composition suspension having nondrying characteristics consisting essentially of about 15 weight-percent de-agglomerated calcined alumina polishing powder having a nominal particle size of less than about 3 microns, about 53 weight-percent water, about 32 weight-percent glycerine, about 0.20 weight-percent carboxy polymethylene polymer and about 0.2 weight-percent of an organic amine base.
Claim 11
Dependent Claim
14 words
A polishing composition suspension according to claim 7 wherein said amine base is triethanolamine.
Claim 12
Dependent Claim
58 words
A substantially non-toxic essentially permanent precision polishing composition suspension consisting essentially of about 13 weight-percent de-agglomerated calcined alumina polishing powder having a nominal particle size of less than about 3 microns, from about 38 weight-percent to about 56 weight-percent water, from about 30 weight-percent to about 48 weight-percent glycerine and less than about 1 weight-percent carboxy polymethylene polymer.
Claim 13
Dependent Claim
58 words
A substantially non-toxic essentially permanent precision polishing composition suspension consisting essentially of about 13 weight-percent de-agglomerated calcined alumina polishing powder having a nominal particle size of less than about 3 microns, from about 38 weight-percent to about 56 weight-percent water, from about 30 weight-percent to about 48 weight-percent glycerine and less than about 1 weight-percent carboxy polymethylene polymer.
Claim 14
Independent Claim
116 words
A method of making a substantially non-toxic, essentially permanent precision polishing suspension comprising mixing a relatively small amount of a carboxy polymethylene polymer into water using a low shear propeller mixer, allowing such polymer mixture to stand to allow wetting of the polymer, adding a basic agent taken from the class consisting of inorganic hydroxides and organic amines to the polymer mixture and further mixing with a low shear propeller mixer to form a thickened mixture, separately blending a fine abrasive polishing powder having a nominal particle size of less than about 5 microns into a mixture of glycerine and water, and mixing said powder blend into said thickened mixture using a low shear propeller mixer.
Claim 15
Independent Claim
116 words
A method of making a substantially non-toxic, essentially permanent precision polishing suspension comprising mixing a relatively small amount of a carboxy polymethylene polymer into water using a low shear propeller mixer, allowing such polymer mixture to stand to allow wetting of the polymer, adding a basic agent taken from the class consisting of inorganic hydroxides and organic amines to the polymer mixture and further mixing with a low shear propeller mixer to form a thickened mixture, separately blending a fine abrasive polishing powder having a nominal particle size of less than about 5 microns into a mixture of glycerine and water, and mixing said powder blend into said thickened mixture using a low shear propeller mixer.
Claim 16
Independent Claim
124 words
A method of making a substantially non-toxic, essentially permanent precision polishing suspension comprising mixing a relatively small amount of a carboxy polymethylene polymer into a mixture of glycerine and water using a low shear propeller mixer, allowing such polymer mixture to stand to allow wetting of the polymer, adding a basic agent taken from the class consisting of inorganic hydroxides and organic amines to the polymer mixture and further mixing with a low shear propeller mixer to form a thickened mixture, separately blending a fine abrasive polishing powder having a nominal particle size of less than about 5 microns into a mixture of glycerine and water, and mixing said powder blend into said thickened mixture and thereafter briefly blending same to homogenize said suspension.
Claim 17
Independent Claim
124 words
A method of making a substantially non-toxic, essentially permanent precision polishing suspension comprising mixing a relatively small amount of a carboxy polymethylene polymer into a mixture of glycerine and water using a low shear propeller mixer, allowing such polymer mixture to stand to allow wetting of the polymer, adding a basic agent taken from the class consisting of inorganic hydroxides and organic amines to the polymer mixture and further mixing with a low shear propeller mixer to form a thickened mixture, separately blending a fine abrasive polishing powder having a nominal particle size of less than about 5 microns into a mixture of glycerine and water, and mixing said powder blend into said thickened mixture and thereafter briefly blending same to homogenize said suspension.
Claim 18
Independent Claim
21 words
A method of making a polishing suspension according to claims 10 or 11 wherein the basic agent is an organic amine.
Claim 19
Independent Claim
68 words
A method of making a substantially non-toxic, essentially permanent precision polishing suspension comprising mixing a relatively small amount of a carboxy polymethylene polymer into a mixture of glycerine and water and adding thereto a fine abrasive polishing powder having a nominal particle size of less than about 5 microns, and thereafter blending into such polymer mixture an organic amine neutralizing agent to thereby thicken and neutralize such mixture.
Claim 20
Independent Claim
68 words
A method of making a substantially non-toxic, essentially permanent precision polishing suspension comprising mixing a relatively small amount of a carboxy polymethylene polymer into a mixture of glycerine and water and adding thereto a fine abrasive polishing powder having a nominal particle size of less than about 5 microns, and thereafter blending into such polymer mixture an organic amine neutralizing agent to thereby thicken and neutralize such mixture.
Claim 21
Independent Claim
30 words
A method of making a polishing suspension according to claims 10, 11 or 13 wherein the total weight of glycerine introduced is less than the total weight of water introduced.
Claim 22
Independent Claim
82 words
A method of making a substantially non-toxic essentially permanent precision polishing suspension comprising blending a relatively small amount of a carboxy polymethylene polymer into an aqueous glycerine solution, stirring in the absence of a neutralizing substance said polymer/aqueous glycerine mixture at a relatively slow speed of about 300 rmp using a low shear propeller mixer to form a thickened mixture, and blending a fine abrasive polishing powder having a nominal particle size of less than about 5 microns into said thickened mixture.
Claim 23
Independent Claim
82 words
A method of making a substantially non-toxic essentially permanent precision polishing suspension comprising blending a relatively small amount of a carboxy polymethylene polymer into an aqueous glycerine solution, stirring in the absence of a neutralizing substance said polymer/aqueous glycerine mixture at a relatively slow speed of about 300 rmp using a low shear propeller mixer to form a thickened mixture, and blending a fine abrasive polishing powder having a nominal particle size of less than about 5 microns into said thickened mixture.
Claim 24
Independent Claim
21 words
A method of making a polishing suspension according to claims 11, 12, 13 or 14 wherein the polishing powder is alumina.
Claim 25
Independent Claim
22 words
A method of making a polishing suspension according to claims 11, 12, 13 or 14 wherein the polishing powder is de-agglomerated alumina.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |