Patent US3860431A successfully refreshed from Google Patents.
US3860431A
Expired / Lapsed
US
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Slip resistant composition for paper coating
Assignee: ChampionX LLC
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Filing: 1972-04-28
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Granted: 1975-01-14
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Expires: 1992-04-28
Abstract
Abstract A silica sol concentrate having improved antiskid properties of an aqueous colloidal anionic silica sol, a polymeric flocculating agent, a polyhydric alcohol, and a biocide is useful for paper coating.
Inventors
- 👤 Charles C Payne
- 👤 Peter H Vossos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:30
CPC Classifications
D; D21; D21H; D21H27/00; C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/14; C01B33/146; C01B33/148; C01B33/1485; D21H19/00; D21H19/36; D21H19/38; D21H19/40; D21H5/00; D21H5/0072
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
191 words
A SILICA SOL CONCENTRATE HAVING FINELY DIVIDED, DISCRETE SILICA PARTICLES, SAID SILICA PARTICLES WHICH UPON DILUTION AGGRE GATE TO FORM A FLOC; SAID SILICA SOL CONCENTRATE COMPRISING: A. FROM 2 TO 20 PERCENT BY WEIGHT OF AN AQUEOUS COLODIAL ANIONIC SILICA SOL CONTAINING APPROXIMATELY 50 PERCENT BY WEIGHT SILICA, THE SILICA PARTICLES IN SAID COLLOIDAL SILICA SOL HAVING AN AVERAGE DIAMETER WITHIN THE RANGE OF 4 TO 40 MILLIMICRONS; B. FROM 70 TO 88 PERCENT BY WEIGHT OF AN AQUEOUS COLLODIAL ANIONIC SILICA SOL CONTAINING APPROXIMATELY 50 PERCENT BY WEIGHT SILICA, THE SILICA PARTICLES IN SAID COLLOIDAL SILICA SOL HAVING AN AVERAGE DIAMETER WITHIN THE RANGE OF 60 TO 120 MILLIMICRONS; C. FROM 0.25 TO 3.0 PERCENT BY WEIGHT OF A WATER-DISPERSIBLE, POLYMERIC FLOCCULATING AGENT WHICH IS A COMPOUND FROM THE GROUP CONSISTING OF POLYETHYLENE GLYCOL WITH A MOLECULAR WEIGHT OF BETWEEN 200 TO 600 DIESTERIFIED WITH FATTY ACIDS CONTAINING 14 TO 18 CARBON ATOMS, AND MIXTURES THEREOF; D. FROM 6 TO 10 PERCENT BY WEIGHT OF A POLYHYDRIC ALCOHOL HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF 50 TO 1,000; AND E. FROM 0 TO 0.5 PERCENT OF A BIOCIDE.
Claim 2
Dependent Claim
191 words
A SILICA SOL CONCENTRATE HAVING FINELY DIVIDED, DISCRETE SILICA PARTICLES, SAID SILICA PARTICLES WHICH UPON DILUTION AGGRE GATE TO FORM A FLOC; SAID SILICA SOL CONCENTRATE COMPRISING: A. FROM 2 TO 20 PERCENT BY WEIGHT OF AN AQUEOUS COLODIAL ANIONIC SILICA SOL CONTAINING APPROXIMATELY 50 PERCENT BY WEIGHT SILICA, THE SILICA PARTICLES IN SAID COLLOIDAL SILICA SOL HAVING AN AVERAGE DIAMETER WITHIN THE RANGE OF 4 TO 40 MILLIMICRONS; B. FROM 70 TO 88 PERCENT BY WEIGHT OF AN AQUEOUS COLLODIAL ANIONIC SILICA SOL CONTAINING APPROXIMATELY 50 PERCENT BY WEIGHT SILICA, THE SILICA PARTICLES IN SAID COLLOIDAL SILICA SOL HAVING AN AVERAGE DIAMETER WITHIN THE RANGE OF 60 TO 120 MILLIMICRONS; C. FROM 0.25 TO 3.0 PERCENT BY WEIGHT OF A WATER-DISPERSIBLE, POLYMERIC FLOCCULATING AGENT WHICH IS A COMPOUND FROM THE GROUP CONSISTING OF POLYETHYLENE GLYCOL WITH A MOLECULAR WEIGHT OF BETWEEN 200 TO 600 DIESTERIFIED WITH FATTY ACIDS CONTAINING 14 TO 18 CARBON ATOMS, AND MIXTURES THEREOF; D. FROM 6 TO 10 PERCENT BY WEIGHT OF A POLYHYDRIC ALCOHOL HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF 50 TO 1,000; AND E. FROM 0 TO 0.5 PERCENT OF A BIOCIDE.
Claim 3
Dependent Claim
24 words
A silica sol concentrate of claim 1 wherein the polyhydric alcohol is selected from the group consisting of ethylene glycol, diethylene glycol and glycerin.
Claim 4
Dependent Claim
21 words
A silica sol concentrate of claim 1 wherein the concentration of flocculating agent is from 0.5 to 1.5 percent by weight.
Claim 5
Dependent Claim
49 words
A silica sol concentrate as claimed in claim 1 in which the flocculating agent is a di-fatty ester of a polyethylene glycol or mixture of polyethylene glycols, said glycols having a molecular weight from 200 to 600 and said fatty ester groups each containing 14 to 18 carbon atoms.
Claim 6
Dependent Claim
29 words
A silica sol concentrate of claim 1 wherein the polymeric flocculating agent is polyethylene glycol with a molecular weight of about 400, which has been diesterified with oleic acid.
Claim 7
Dependent Claim
78 words
A silica sol concentrate of claim 1 wherein the polymeric flocculating agent comprises: A. 25 percent by weight of polyethylene glycol with a molecular weight of about 200 which has been diesterified with oleic acid; B. 25 percent by weight polyethylene glycol with a molecular weight of about 600 which has been diesterified with oleic acid; and C. 50 percent by weight polyethylene glycol with a molecular weight of about 400 which has been diesterified with oleic acid.
Claim 8
Dependent Claim
29 words
A silica sol concentrate of claim 1 wherein the polymeric flocculating agent is polyethylene glycol with a molecular wieght of about 400 which has been diesterified with oleic acid.
Claim 9
Dependent Claim
13 words
A silica sol concentrate of claim 1 wherein the polyhydric alcohol is glycerin.
Claim 10
Dependent Claim
121 words
A silica sol concentrate which comprises: A. 12 percent by weight of an aqueous colloidal anionic silica sol containing approximately 50 percent silica by weight, the silica particles in said colloidal silica sol having an average diameter within the range of 4 to 40 millimicrons; B. 78 percent by weight of an aqueous colloidal anionic silica sol containing approximately 50 percent silica by weight, the silica particles in said colloidal silica sol having an average diameter within the range of 60 to 120 millimicrons; C. 1.0 percent by weight of polyethylene glycol with a molecular weight of about 400 which has been diesterified with oleic acid; D. 8.5 percent by weight of glycerin; and E. 0.5 percent by weight of glutaraldehyde.
Claim 11
Dependent Claim
121 words
A silica sol concentrate which comprises: A. 12 percent by weight of an aqueous colloidal anionic silica sol containing approximately 50 percent silica by weight, the silica particles in said colloidal silica sol having an average diameter within the range of 4 to 40 millimicrons; B. 78 percent by weight of an aqueous colloidal anionic silica sol containing approximately 50 percent silica by weight, the silica particles in said colloidal silica sol having an average diameter within the range of 60 to 120 millimicrons; C. 1.0 percent by weight of polyethylene glycol with a molecular weight of about 400 which has been diesterified with oleic acid; D. 8.5 percent by weight of glycerin; and E. 0.5 percent by weight of glutaraldehyde.
Claim 12
Dependent Claim
111 words
A silica sol concentrate which comprises: A. 12 percent by weight of an aqueous colloidal anionic silica sol containing approximately 50 percent silica by weight, the silica particles in said colloidal silica sol having an average diameter of 20 millimicrons; B. 78 percent by weight of an aqueous colloidal anionic silica sol, containing approximately 50 percent silica by weight, the silica particles in said colloidal silica sol having an average diameter of 70 millimicrons; C. 1.0 percent by weight of polyethylene glycol with a molecular weight of about 400 which has been diesterified with oleic acid; D. 8.5 percent by weight of glycerin; and E. 0.5 percent by weight of glutaraldehyde.
Claim 13
Dependent Claim
111 words
A silica sol concentrate which comprises: A. 12 percent by weight of an aqueous colloidal anionic silica sol containing approximately 50 percent silica by weight, the silica particles in said colloidal silica sol having an average diameter of 20 millimicrons; B. 78 percent by weight of an aqueous colloidal anionic silica sol, containing approximately 50 percent silica by weight, the silica particles in said colloidal silica sol having an average diameter of 70 millimicrons; C. 1.0 percent by weight of polyethylene glycol with a molecular weight of about 400 which has been diesterified with oleic acid; D. 8.5 percent by weight of glycerin; and E. 0.5 percent by weight of glutaraldehyde.
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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |